code.delx.au - gnu-emacs/blob - configure.ac

   1 dnl  Autoconf script for GNU Emacs
   2 dnl To rebuild the `configure' script from this, execute the command
   3 dnl     autoconf
   4 dnl in the directory containing this script.
   5 dnl If you changed any AC_DEFINES, also run autoheader.
   6 dnl
   7 dnl Copyright (C) 1994-1996, 1999-2013 Free Software Foundation, Inc.
   8 dnl
   9 dnl  This file is part of GNU Emacs.
  10 dnl
  11 dnl  GNU Emacs is free software: you can redistribute it and/or modify
  12 dnl  it under the terms of the GNU General Public License as published by
  13 dnl  the Free Software Foundation, either version 3 of the License, or
  14 dnl  (at your option) any later version.
  15 dnl
  16 dnl  GNU Emacs is distributed in the hope that it will be useful,
  17 dnl  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 dnl  GNU General Public License for more details.
  20 dnl
  21 dnl  You should have received a copy of the GNU General Public License
  22 dnl  along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 AC_PREREQ(2.65)
  25 AC_INIT(emacs, 24.3.50)
  26
  27 dnl This is the documented way to record the args passed to configure,
  28 dnl rather than $ac_configure_args.
  29 emacs_config_options="$@"
  30 ## Add some environment variables, if they were passed via the environment
  31 ## rather than on the command-line.
  32 for var in CFLAGS CPPFLAGS LDFLAGS; do
  33     case "$emacs_config_options" in
  34       *$var=*) continue ;;
  35     esac
  36     eval val="\$${var}"
  37     test x"$val" = x && continue
  38     emacs_config_options="${emacs_config_options}${emacs_config_options:+ }$var=\"$val\""
  39 done
  40
  41 AC_CONFIG_HEADER(src/config.h:src/config.in)
  42 AC_CONFIG_SRCDIR(src/lisp.h)
  43 AC_CONFIG_AUX_DIR(build-aux)
  44 dnl Fairly arbitrary, older versions might work too.
  45 AM_INIT_AUTOMAKE(1.11)
  46
  47 dnl Support for --program-prefix, --program-suffix and
  48 dnl --program-transform-name options
  49 AC_ARG_PROGRAM
  50
  51 dnl It is important that variables on the RHS not be expanded here,
  52 dnl hence the single quotes.  This is per the GNU coding standards, see
  53 dnl (autoconf) Installation Directory Variables
  54 dnl See also epaths.h below.
  55 lispdir='${datadir}/emacs/${version}/lisp'
  56 leimdir='${datadir}/emacs/${version}/leim'
  57 standardlisppath='${lispdir}:${leimdir}'
  58 locallisppath='${datadir}/emacs/${version}/site-lisp:'\
  59 '${datadir}/emacs/site-lisp'
  60 lisppath='${locallisppath}:${standardlisppath}'
  61 etcdir='${datadir}/emacs/${version}/etc'
  62 archlibdir='${libexecdir}/emacs/${version}/${configuration}'
  63 docdir='${datadir}/emacs/${version}/etc'
  64 gamedir='${localstatedir}/games/emacs'
  65
  66 dnl Special option to disable the most of other options.
  67 AC_ARG_WITH(all,
  68 [AS_HELP_STRING([--without-all],
  69                 [omit almost all features and build
  70                 small executable with minimal dependencies])],
  71   with_features=$withval,
  72   with_features=yes)
  73
  74 dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
  75 dnl Create a new --with option that defaults to being disabled.
  76 dnl NAME is the base name of the option.  The shell variable with_NAME
  77 dnl   will be set to either the user's value (if the option is
  78 dnl   specified; 'yes' for a plain --with-NAME) or to 'no' (if the
  79 dnl   option is not specified).  Note that the shell variable name is
  80 dnl   constructed as autoconf does, by replacing non-alphanumeric
  81 dnl   characters with "_".
  82 dnl HELP-STRING is the help text for the option.
  83 AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
  84   AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
  85     m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
  86 ])dnl
  87
  88 dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
  89 dnl Create a new --with option that defaults to $enable_features.
  90 dnl NAME is the base name of the option.  The shell variable with_NAME
  91 dnl   will be set either to 'no' (for a plain --without-NAME) or to
  92 dnl   'yes' (if the option is not specified).  Note that the shell
  93 dnl   variable name is constructed as autoconf does, by replacing
  94 dnl   non-alphanumeric characters with "_".
  95 dnl HELP-STRING is the help text for the option.
  96 AC_DEFUN([OPTION_DEFAULT_ON], [dnl
  97   AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
  98    m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=$with_features])dnl
  99 ])dnl
 100
 101 OPTION_DEFAULT_ON([pop],[don't support POP mail retrieval with movemail])
 102 if test "$with_pop" = yes; then
 103    AC_DEFINE(MAIL_USE_POP)
 104 fi
 105 AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
 106
 107 OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
 108 if test "$with_kerberos" != no; then
 109    AC_DEFINE(KERBEROS)
 110 fi
 111 AH_TEMPLATE(KERBEROS,
 112             [Define to support Kerberos-authenticated POP mail retrieval.])dnl
 113
 114 OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
 115 if test "${with_kerberos5}" != no; then
 116   if test "${with_kerberos}" = no; then
 117     with_kerberos=yes
 118     AC_DEFINE(KERBEROS)
 119   fi
 120   AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
 121 fi
 122
 123 OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
 124 dnl FIXME hesiod support may not be present, so it seems like an error
 125 dnl to define, or at least use, this unconditionally.
 126 if test "$with_hesiod" != no; then
 127   AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
 128 fi
 129
 130 OPTION_DEFAULT_OFF([mmdf],[support MMDF mailboxes])
 131 if test "$with_mmdf" != no; then
 132    AC_DEFINE(MAIL_USE_MMDF, 1, [Define to support MMDF mailboxes in movemail.])
 133 fi
 134
 135 OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
 136 if test "$with_mail_unlink" != no; then
 137    AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
 138 fi
 139
 140 AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
 141     [string giving default POP mail host])],
 142     AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
 143
 144 OPTION_DEFAULT_ON([sound],[don't compile with sound support])
 145
 146 dnl FIXME currently it is not the last.
 147 dnl This should be the last --with option, because --with-x is
 148 dnl added later on when we find the file name of X, and it's best to
 149 dnl keep them together visually.
 150 AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
 151  [use an X toolkit (KIT one of: yes or gtk, gtk2, gtk3, lucid or athena, motif, no)])],
 152 [         case "${withval}" in
 153             y | ye | yes )      val=gtk ;;
 154             n | no )            val=no  ;;
 155             l | lu | luc | luci | lucid )       val=lucid ;;
 156             a | at | ath | athe | athen | athena )      val=athena ;;
 157             m | mo | mot | moti | motif )       val=motif ;;
 158             g | gt | gtk  )     val=gtk ;;
 159             gtk2  )     val=gtk2 ;;
 160             gtk3  )     val=gtk3 ;;
 161             * )
 162 AC_MSG_ERROR([`--with-x-toolkit=$withval' is invalid;
 163 this option's value should be `yes', `no', `lucid', `athena', `motif', `gtk',
 164 `gtk2' or `gtk3'.  `yes' and `gtk' are synonyms.
 165 `athena' and `lucid' are synonyms.])
 166             ;;
 167           esac
 168           with_x_toolkit=$val
 169 ])
 170
 171 OPTION_DEFAULT_OFF([wide-int], [prefer wide Emacs integers (typically 62-bit)])
 172 if test "$with_wide_int" = yes; then
 173   AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
 174 fi
 175
 176 dnl _ON results in a '--without' option in the --help output, so
 177 dnl the help text should refer to "don't compile", etc.
 178 OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
 179 OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
 180 OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
 181 OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
 182 OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
 183 OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
 184 OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
 185 OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])
 186
 187 OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
 188 OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
 189 OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
 190
 191 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
 192 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
 193 OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
 194 OPTION_DEFAULT_OFF([ns],[use NeXTstep (Cocoa or GNUstep) windowing system])
 195 OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI])
 196
 197 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
 198 OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
 199 OPTION_DEFAULT_ON([gconf],[don't compile with GConf support])
 200 OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
 201 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
 202 OPTION_DEFAULT_ON([acl],[don't compile with ACL support])
 203 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
 204 OPTION_DEFAULT_ON([inotify],[don't compile with inotify (file-watch) support])
 205
 206 ## For the times when you want to build Emacs but don't have
 207 ## a suitable makeinfo, and can live without the manuals.
 208 dnl http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01844.html
 209 OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
 210
 211 ## Makefile.in needs the cache file name.
 212 AC_SUBST(cache_file)
 213
 214 ## This is an option because I do not know if all info/man support
 215 ## compressed files, nor how to test if they do so.
 216 OPTION_DEFAULT_ON([compress-info],[don't compress the installed Info pages])
 217 if test $with_compress_info = yes; then
 218    GZIP_INFO=yes
 219 else
 220    GZIP_INFO=
 221 fi
 222 AC_SUBST(GZIP_INFO)
 223
 224 AC_ARG_WITH([pkg-config-prog],dnl
 225 [AS_HELP_STRING([--with-pkg-config-prog=FILENAME],
 226                   [file name of pkg-config for finding GTK and librsvg])])
 227 if test "X${with_pkg_config_prog}" != X; then
 228    if test "${with_pkg_config_prog}" != yes; then
 229       PKG_CONFIG="${with_pkg_config_prog}"
 230    fi
 231 fi
 232
 233 CRT_DIR=
 234 AC_ARG_WITH([crt-dir],dnl
 235 [AS_HELP_STRING([--with-crt-dir=DIR],[directory containing crtn.o etc.
 236 The default is /usr/lib, or /usr/lib64 on some platforms.])])
 237 CRT_DIR="${with_crt_dir}"
 238
 239 AC_ARG_WITH(gameuser,dnl
 240 [AS_HELP_STRING([--with-gameuser=USER],[user for shared game score files])])
 241 test "X${with_gameuser}" != X && test "${with_gameuser}" != yes \
 242   && gameuser="${with_gameuser}"
 243 test "X$gameuser" = X && gameuser=games
 244
 245 AC_ARG_WITH([gnustep-conf],dnl
 246 [AS_HELP_STRING([--with-gnustep-conf=FILENAME],
 247    [name of GNUstep.conf; default $GNUSTEP_CONFIG_FILE, or /etc/GNUstep/GNUstep.conf])])
 248 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
 249   GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
 250 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
 251      GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
 252
 253 AC_ARG_ENABLE(ns-self-contained,
 254 [AS_HELP_STRING([--disable-ns-self-contained],
 255                 [disable self contained build under NeXTstep])],
 256    EN_NS_SELF_CONTAINED=$enableval,
 257    EN_NS_SELF_CONTAINED=yes)
 258
 259 AC_ARG_ENABLE(locallisppath,
 260 [AS_HELP_STRING([--enable-locallisppath=PATH],
 261                 [directories Emacs should search for lisp files specific
 262                  to this site])],
 263 if test "${enableval}" = "no"; then
 264   locallisppath=
 265 elif test "${enableval}" != "yes"; then
 266   locallisppath=${enableval}
 267 fi)
 268
 269 AC_ARG_ENABLE(checking,
 270 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
 271                 [enable expensive run-time checks.  With LIST,
 272                  enable only specific categories of checks.
 273                  Categories are: all,yes,no.
 274                  Flags are: stringbytes, stringoverrun, stringfreelist,
 275                  xmallocoverrun, conslist, glyphs])],
 276 [ac_checking_flags="${enableval}"],[])
 277 IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 278 for check in $ac_checking_flags
 279 do
 280         case $check in
 281         # these set all the flags to specific states
 282         yes)            ac_enable_checking=1 ;;
 283         no)             ac_enable_checking= ;
 284                         ac_gc_check_stringbytes= ;
 285                         ac_gc_check_string_overrun= ;
 286                         ac_gc_check_string_free_list= ;
 287                         ac_xmalloc_overrun= ;
 288                         ac_gc_check_cons_list= ;
 289                         ac_glyphs_debug= ;;
 290         all)            ac_enable_checking=1 ;
 291                         ac_gc_check_stringbytes=1 ;
 292                         ac_gc_check_string_overrun=1 ;
 293                         ac_gc_check_string_free_list=1 ;
 294                         ac_xmalloc_overrun=1 ;
 295                         ac_gc_check_cons_list=1 ;
 296                         ac_glyphs_debug=1 ;;
 297         # these enable particular checks
 298         stringbytes)    ac_gc_check_stringbytes=1 ;;
 299         stringoverrun)  ac_gc_check_string_overrun=1 ;;
 300         stringfreelist) ac_gc_check_string_free_list=1 ;;
 301         xmallocoverrun) ac_xmalloc_overrun=1 ;;
 302         conslist)       ac_gc_check_cons_list=1 ;;
 303         glyphs)         ac_glyphs_debug=1 ;;
 304         *)      AC_MSG_ERROR(unknown check category $check) ;;
 305         esac
 306 done
 307 IFS="$ac_save_IFS"
 308
 309 if test x$ac_enable_checking != x ; then
 310   AC_DEFINE(ENABLE_CHECKING, 1,
 311 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
 312 fi
 313 if test x$ac_gc_check_stringbytes != x ; then
 314   AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
 315 [Define this temporarily to hunt a bug.  If defined, the size of
 316    strings is redundantly recorded in sdata structures so that it can
 317    be compared to the sizes recorded in Lisp strings.])
 318 fi
 319 if test x$ac_gc_check_string_overrun != x ; then
 320   AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
 321 [Define this to check for short string overrun.])
 322 fi
 323 if test x$ac_gc_check_string_free_list != x ; then
 324   AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
 325 [Define this to check the string free list.])
 326 fi
 327 if test x$ac_xmalloc_overrun != x ; then
 328   AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
 329 [Define this to check for malloc buffer overrun.])
 330 fi
 331 if test x$ac_gc_check_cons_list != x ; then
 332   AC_DEFINE(GC_CHECK_CONS_LIST, 1,
 333 [Define this to check for errors in cons list.])
 334 fi
 335 if test x$ac_glyphs_debug != x ; then
 336   AC_DEFINE(GLYPH_DEBUG, 1,
 337 [Define this to enable glyphs debugging code.])
 338 fi
 339
 340 AC_ARG_ENABLE(check-lisp-object-type,
 341 [AS_HELP_STRING([--enable-check-lisp-object-type],
 342                 [enable compile time checks for the Lisp_Object data type.
 343                 This is useful for development for catching certain types of bugs.])],
 344 if test "${enableval}" != "no"; then
 345    AC_DEFINE(CHECK_LISP_OBJECT_TYPE, 1,
 346    [Define this to enable compile time checks for the Lisp_Object data type.])
 347 fi)
 348
 349
 350 dnl The name of this option is unfortunate.  It predates, and has no
 351 dnl relation to, the "sampling-based elisp profiler" added in 24.3.
 352 dnl Actually, it stops it working.
 353 dnl http://lists.gnu.org/archive/html/emacs-devel/2012-11/msg00393.html
 354 AC_ARG_ENABLE(profiling,
 355 [AS_HELP_STRING([--enable-profiling],
 356                 [build emacs with low-level, gprof profiling support.
 357                 Mainly useful for debugging Emacs itself.  May not work on
 358                 all platforms.  Stops profiler.el working.])],
 359 [ac_enable_profiling="${enableval}"],[])
 360 if test x$ac_enable_profiling != x ; then
 361    PROFILING_CFLAGS="-DPROFILING=1 -pg"
 362 else
 363    PROFILING_CFLAGS=
 364 fi
 365 AC_SUBST(PROFILING_CFLAGS)
 366
 367 AC_ARG_ENABLE(autodepend,
 368 [AS_HELP_STRING([--enable-autodepend],
 369                 [automatically generate dependencies to .h-files.
 370                  Requires GNU Make and Gcc. Enabled if GNU Make and Gcc is
 371                  found])],
 372 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
 373
 374 AC_ARG_ENABLE(gtk-deprecation-warnings,
 375 [AS_HELP_STRING([--enable-gtk-deprecation-warnings],
 376                 [Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
 377 [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
 378
 379 #### Make srcdir absolute, if it isn't already.  It's important to
 380 #### avoid running the file name through pwd unnecessarily, since pwd can
 381 #### give you automounter prefixes, which can go away.  We do all this
 382 #### so Emacs can find its files when run uninstalled.
 383 ## Make sure CDPATH doesn't affect cd (in case PWD is relative).
 384 unset CDPATH
 385 case "${srcdir}" in
 386   /* ) ;;
 387   . )
 388     ## We may be able to use the $PWD environment variable to make this
 389     ## absolute.  But sometimes PWD is inaccurate.
 390     ## Note: we used to use $PWD at the end instead of `pwd`,
 391     ## but that tested only for a well-formed and valid PWD,
 392     ## it did not object when PWD was well-formed and valid but just wrong.
 393     if test ".$PWD" != "." && test ".`(cd "$PWD" ; sh -c pwd)`" = ".`pwd`"  ;
 394     then
 395       srcdir="$PWD"
 396     else
 397       srcdir=`(cd "$srcdir"; pwd)`
 398     fi
 399   ;;
 400   *  ) srcdir=`(cd "$srcdir"; pwd)` ;;
 401 esac
 402
 403 ### Canonicalize the configuration name.
 404
 405 AC_CANONICAL_HOST
 406 canonical=$host
 407 configuration=${host_alias-${build_alias-$host}}
 408
 409 dnl This used to use changequote, but, apart from `changequote is evil'
 410 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
 411 dnl the great gob of text.  Thus it's not processed for possible expansion.
 412 dnl Just make sure the brackets remain balanced.
 413 dnl
 414 dnl Since Emacs can't find matching pairs of quotes, boundaries are
 415 dnl indicated by comments.
 416 dnl quotation begins
 417 [
 418
 419 ### If you add support for a new configuration, add code to this
 420 ### switch statement to recognize your configuration name and select
 421 ### the appropriate operating system file.
 422
 423 ### You would hope that you could choose an s/*.h
 424 ### file based on the operating system portion.  However, it turns out
 425 ### that each s/*.h file is pretty manufacturer-specific.
 426 ### So we basically have to have a special case for each
 427 ### configuration name.
 428 ###
 429 ### As far as handling version numbers on operating systems is
 430 ### concerned, make sure things will fail in a fixable way.  If
 431 ### /etc/MACHINES doesn't say anything about version numbers, be
 432 ### prepared to handle anything reasonably.  If version numbers
 433 ### matter, be sure /etc/MACHINES says something about it.
 434
 435 opsys='' unported=no
 436 case "${canonical}" in
 437
 438   ## GNU/Linux and similar ports
 439   *-*-linux* )
 440     opsys=gnu-linux
 441   ;;
 442
 443   ## FreeBSD ports
 444   *-*-freebsd* )
 445     opsys=freebsd
 446   ;;
 447
 448   ## FreeBSD kernel + glibc based userland
 449   *-*-kfreebsd*gnu* )
 450     opsys=gnu-kfreebsd
 451   ;;
 452
 453   ## NetBSD ports
 454   *-*-netbsd* )
 455     opsys=netbsd
 456   ;;
 457
 458   ## OpenBSD ports
 459   *-*-openbsd* )
 460     opsys=openbsd
 461   ;;
 462
 463   ## Apple Darwin / Mac OS X
 464   *-apple-darwin* )
 465     case "${canonical}" in
 466       i[3456]86-* )  ;;
 467       powerpc-* )    ;;
 468       x86_64-* )     ;;
 469       * )            unported=yes ;;
 470     esac
 471     opsys=darwin
 472     ## Use fink packages if available.
 473     ## FIXME find a better way to do this: http://debbugs.gnu.org/11507
 474 ##    if test -d /sw/include && test -d /sw/lib; then
 475 ##      GCC_TEST_OPTIONS="-I/sw/include -L/sw/lib"
 476 ##      NON_GCC_TEST_OPTIONS=${GCC_TEST_OPTIONS}
 477 ##    fi
 478   ;;
 479
 480   ## HP 9000 series 700 and 800, running HP/UX
 481   hppa*-hp-hpux10.2* )
 482     opsys=hpux10-20
 483   ;;
 484   hppa*-hp-hpux1[1-9]* )
 485     opsys=hpux11
 486     CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
 487   ;;
 488
 489   ## IBM machines
 490   rs6000-ibm-aix4.[23]* )
 491     opsys=aix4-2
 492   ;;
 493   powerpc-ibm-aix4.[23]*  )
 494     opsys=aix4-2
 495   ;;
 496   rs6000-ibm-aix[56]* )
 497     opsys=aix4-2
 498   ;;
 499   powerpc-ibm-aix[56]*  )
 500     opsys=aix4-2
 501   ;;
 502
 503   ## Silicon Graphics machines
 504   ## Iris 4D
 505   mips-sgi-irix6.5 )
 506     opsys=irix6-5
 507     # Without defining _LANGUAGE_C, things get masked out in the headers
 508     # so that, for instance, grepping for `free' in stdlib.h fails and
 509     # AC_HEADER_STD_C fails.   (MIPSPro 7.2.1.2m compilers, Irix 6.5.3m).
 510     NON_GCC_TEST_OPTIONS="-D_LANGUAGE_C"
 511   ;;
 512
 513   ## Suns
 514   *-sun-solaris* \
 515     | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
 516     | x86_64-*-solaris2*    | x86_64-*-sunos5*)
 517     case "${canonical}" in
 518       i[3456]86-*-* )   ;;
 519       amd64-*-*|x86_64-*-*) ;;
 520       sparc* )          ;;
 521       * )               unported=yes ;;
 522     esac
 523     case "${canonical}" in
 524       *-sunos5.6* | *-solaris2.6* )
 525                 opsys=sol2-6
 526                 RANLIB="ar -ts"
 527                 ;;
 528       *-sunos5.[7-9]* | *-solaris2.[7-9]* )
 529                 opsys=sol2-6
 530                 emacs_check_sunpro_c=yes
 531                 ;;
 532       *-sunos5* | *-solaris* )
 533                 opsys=sol2-10
 534                 emacs_check_sunpro_c=yes
 535                 ;;
 536     esac
 537     ## Watch out for a compiler that we know will not work.
 538     case "${canonical}" in
 539      *-solaris* | *-sunos5* )
 540                 if [ "x$CC" = x/usr/ucb/cc ]; then
 541                   ## /usr/ucb/cc doesn't work;
 542                   ## we should find some other compiler that does work.
 543                   unset CC
 544                 fi
 545                 ;;
 546       *) ;;
 547     esac
 548   ;;
 549
 550   ## Intel 386 machines where we don't care about the manufacturer.
 551   i[3456]86-*-* )
 552     case "${canonical}" in
 553       *-cygwin )                opsys=cygwin ;;
 554       *-darwin* )               opsys=darwin ;;
 555       *-sysv4.2uw* )            opsys=unixware ;;
 556       *-sysv5uw* )              opsys=unixware ;;
 557       *-sysv5OpenUNIX* )        opsys=unixware ;;
 558       ## Otherwise, we'll fall through to the generic opsys code at the bottom.
 559     esac
 560   ;;
 561
 562   * )
 563     unported=yes
 564   ;;
 565 esac
 566
 567 ### If the code above didn't choose an operating system, just choose
 568 ### an operating system based on the configuration name.  You really
 569 ### only want to use this when you have no idea what the right
 570 ### operating system is; if you know what operating systems a machine
 571 ### runs, it's cleaner to make it explicit in the case statement
 572 ### above.
 573 if test x"${opsys}" = x; then
 574   case "${canonical}" in
 575     *-gnu* )                            opsys=gnu ;;
 576     * )
 577       unported=yes
 578     ;;
 579   esac
 580 fi
 581
 582 ]
 583 dnl quotation ends
 584
 585 if test $unported = yes; then
 586   AC_MSG_ERROR([Emacs hasn't been ported to `${canonical}' systems.
 587 Check `etc/MACHINES' for recognized configuration names.])
 588 fi
 589
 590
 591 #### Choose a compiler.
 592
 593 dnl Sets GCC=yes if using gcc.
 594 AC_PROG_CC
 595 AM_PROG_CC_C_O
 596
 597 if test x$GCC = xyes; then
 598   test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
 599 else
 600   test "x$NON_GCC_TEST_OPTIONS" != x && CC="$CC $NON_GCC_TEST_OPTIONS"
 601 fi
 602
 603 # Avoid gnulib's tests for O_NOATIME and O_NOFOLLOW, as we don't use them.
 604 AC_DEFUN([gl_FCNTL_O_FLAGS])
 605 # Avoid gnulib's threadlib module, as we do threads our own way.
 606 AC_DEFUN([gl_THREADLIB])
 607
 608 # Initialize gnulib right after choosing the compiler.
 609 dnl Amongst other things, this sets AR and ARFLAGS.
 610 gl_EARLY
 611
 612 # It's helpful to have C macros available to GDB, so prefer -g3 to -g
 613 # if -g3 works and the user does not specify CFLAGS.
 614 # This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
 615 if test "$ac_test_CFLAGS" != set; then
 616   case $CFLAGS in
 617     '-g')
 618       emacs_g3_CFLAGS='-g3';;
 619     '-g -O2')
 620       emacs_g3_CFLAGS='-g3 -O2';;
 621     *)
 622       emacs_g3_CFLAGS='';;
 623   esac
 624   if test -n "$emacs_g3_CFLAGS"; then
 625     emacs_save_CFLAGS=$CFLAGS
 626     CFLAGS=$emacs_g3_CFLAGS
 627     AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
 628       [emacs_cv_prog_cc_g3],
 629       [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
 630          [emacs_cv_prog_cc_g3=yes],
 631          [emacs_cv_prog_cc_g3=no])])
 632     if test $emacs_cv_prog_cc_g3 = yes; then
 633       CFLAGS=$emacs_g3_CFLAGS
 634     else
 635       CFLAGS=$emacs_save_CFLAGS
 636     fi
 637   fi
 638 fi
 639
 640 AC_ARG_ENABLE([gcc-warnings],
 641   [AS_HELP_STRING([--enable-gcc-warnings],
 642                   [turn on lots of GCC warnings/errors. This is intended for
 643                    developers, and may generate false alarms when used
 644                    with older or non-GNU development tools.])],
 645   [case $enableval in
 646      yes|no) ;;
 647      *)      AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
 648    esac
 649    gl_gcc_warnings=$enableval],
 650   [gl_gcc_warnings=no]
 651 )
 652
 653 AC_ARG_ENABLE(link-time-optimization,
 654 [AS_HELP_STRING([--enable-link-time-optimization],
 655                 [build emacs with link-time optimization.
 656                  This is supported only for GCC since 4.5.0.])],
 657 if test "${enableval}" != "no"; then
 658    AC_MSG_CHECKING([whether link-time optimization is supported])
 659    ac_lto_supported=no
 660    if test x$GCC = xyes; then
 661       CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
 662       if test x$CPUS != x; then
 663          LTO="-flto=$CPUS"
 664       else
 665          LTO="-flto"
 666       fi
 667       old_CFLAGS=$CFLAGS
 668       CFLAGS="$CFLAGS $LTO"
 669       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
 670         [ac_lto_supported=yes], [ac_lto_supported=no])
 671       CFLAGS="$old_CFLAGS"
 672    fi
 673    AC_MSG_RESULT([$ac_lto_supported])
 674    if test "$ac_lto_supported" = "yes"; then
 675       CFLAGS="$CFLAGS $LTO"
 676    fi
 677 fi)
 678
 679 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
 680 # ------------------------------------------------
 681 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
 682 # Otherwise, run RUN-IF-NOT-FOUND.
 683 AC_DEFUN([gl_GCC_VERSION_IFELSE],
 684   [AC_PREPROC_IFELSE(
 685     [AC_LANG_PROGRAM(
 686       [[
 687 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
 688 /* ok */
 689 #else
 690 # error "your version of gcc is older than $1.$2"
 691 #endif
 692       ]]),
 693     ], [$3], [$4])
 694   ]
 695 )
 696
 697 # When compiling with GCC, prefer -isystem to -I when including system
 698 # include files, to avoid generating useless diagnostics for the files.
 699 if test "$gl_gcc_warnings" != yes; then
 700   isystem='-I'
 701 else
 702   isystem='-isystem '
 703
 704   # This, $nw, is the list of warnings we disable.
 705   nw=
 706
 707   case $with_x_toolkit in
 708     lucid | athena | motif)
 709        # Old toolkits mishandle 'const'.
 710        nw="$nw -Wwrite-strings"
 711        ;;
 712     *)
 713        gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
 714        ;;
 715   esac
 716   AC_SUBST([WERROR_CFLAGS])
 717
 718   nw="$nw -Waggregate-return"       # anachronistic
 719   nw="$nw -Wlong-long"              # C90 is anachronistic
 720   nw="$nw -Wc++-compat"             # We don't care about C++ compilers
 721   nw="$nw -Wundef"                  # Warns on '#if GNULIB_FOO' etc in gnulib
 722   nw="$nw -Wtraditional"            # Warns on #elif which we use often
 723   nw="$nw -Wcast-qual"              # Too many warnings for now
 724   nw="$nw -Wconversion"             # Too many warnings for now
 725   nw="$nw -Wsystem-headers"         # Don't let system headers trigger warnings
 726   nw="$nw -Wsign-conversion"        # Too many warnings for now
 727   nw="$nw -Woverlength-strings"     # Not a problem these days
 728   nw="$nw -Wtraditional-conversion" # Too many warnings for now
 729   nw="$nw -Wunreachable-code"       # so buggy that it's now silently ignored
 730   nw="$nw -Wpadded"                 # Our structs are not padded
 731   nw="$nw -Wredundant-decls"        # we regularly (re)declare functions
 732   nw="$nw -Wlogical-op"             # any use of fwrite provokes this
 733   nw="$nw -Wformat-nonliteral"      # we do this a lot
 734   nw="$nw -Wvla"                    # warnings in gettext.h
 735   nw="$nw -Wnested-externs"         # use of XARGMATCH/verify_function__
 736   nw="$nw -Wswitch-enum"            # Too many warnings for now
 737   nw="$nw -Wswitch-default"         # Too many warnings for now
 738   nw="$nw -Wfloat-equal"            # warns about high-quality code
 739   nw="$nw -Winline"                 # OK to ignore 'inline'
 740   nw="$nw -Wjump-misses-init"       # We sometimes safely jump over init.
 741   nw="$nw -Wstrict-overflow"        # OK to optimize assuming that
 742                                     # signed overflow has undefined behavior
 743   nw="$nw -Wsync-nand"              # irrelevant here, and provokes ObjC warning
 744   nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
 745
 746   # Emacs doesn't care about shadowing; see
 747   # <http://lists.gnu.org/archive/html/emacs-diffs/2011-11/msg00265.html>.
 748   nw="$nw -Wshadow"
 749
 750   # Emacs's use of alloca inhibits protecting the stack.
 751   nw="$nw -Wstack-protector"
 752
 753   # The following line should be removable at some point.
 754   nw="$nw -Wsuggest-attribute=pure"
 755
 756   gl_MANYWARN_ALL_GCC([ws])
 757   gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
 758   for w in $ws; do
 759     gl_WARN_ADD([$w])
 760   done
 761   gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
 762   gl_WARN_ADD([-Wno-sign-compare])     # Too many warnings for now
 763   gl_WARN_ADD([-Wno-type-limits])      # Too many warnings for now
 764   gl_WARN_ADD([-Wno-switch])           # Too many warnings for now
 765   gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
 766   gl_WARN_ADD([-Wno-format-nonliteral])
 767
 768   # In spite of excluding -Wlogical-op above, it is enabled, as of
 769   # gcc 4.5.0 20090517.
 770   gl_WARN_ADD([-Wno-logical-op])
 771
 772   gl_WARN_ADD([-fdiagnostics-show-option])
 773   gl_WARN_ADD([-funit-at-a-time])
 774
 775   AC_DEFINE([lint], [1], [Define to 1 if the compiler is checking for lint.])
 776   AH_VERBATIM([FORTIFY_SOURCE],
 777   [/* Enable compile-time and run-time bounds-checking, and some warnings,
 778       without upsetting glibc 2.15+. */
 779    #if !defined _FORTIFY_SOURCE && defined __OPTIMIZE__ && __OPTIMIZE__
 780    # define _FORTIFY_SOURCE 2
 781    #endif
 782   ])
 783   AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
 784
 785   # We use a slightly smaller set of warning options for lib/.
 786   # Remove the following and save the result in GNULIB_WARN_CFLAGS.
 787   nw=
 788   nw="$nw -Wunused-macros"
 789
 790   gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
 791   AC_SUBST([GNULIB_WARN_CFLAGS])
 792 fi
 793
 794
 795
 796 dnl Some other nice autoconf tests.
 797 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
 798 dnl AC_PROG_INSTALL
 799 dnl AC_PROG_MKDIR_P
 800 dnl if test "x$RANLIB" = x; then
 801 dnl   AC_PROG_RANLIB
 802 dnl fi
 803 AC_PROG_LN_S
 804
 805 AC_PATH_PROG(INSTALL_INFO, install-info, :,
 806   $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
 807 dnl Don't use GZIP, which is used by gzip for additional parameters.
 808 AC_PATH_PROG(GZIP_PROG, gzip)
 809
 810 if test $opsys = gnu-linux; then
 811   AC_PATH_PROG(PAXCTL, paxctl,,
 812     [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
 813   if test "X$PAXCTL" != X; then
 814     AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
 815     AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
 816       [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then AC_MSG_RESULT(yes)
 817       else AC_MSG_RESULT(no); PAXCTL=""; fi])
 818   fi
 819 fi
 820
 821 ## Need makeinfo >= 4.7 (?) to build the manuals.
 822 AC_PATH_PROG(MAKEINFO, makeinfo, no)
 823 dnl By this stage, configure has already checked for egrep and set EGREP,
 824 dnl or exited with an error if no egrep was found.
 825 if test "$MAKEINFO" != "no"; then
 826   case `
 827     $MAKEINFO --version 2> /dev/null |
 828     $EGREP 'texinfo[[^0-9]]*([[1-4]][[0-9]]+|[[5-9]]|4\.[[7-9]]|4\.[[1-6]][[0-9]]+)'
 829   ` in
 830     '') MAKEINFO=no;;
 831   esac
 832 fi
 833
 834 ## Makeinfo is unusual.  For a released Emacs, the manuals are
 835 ## pre-built, and not deleted by the normal clean rules.  makeinfo is
 836 ## therefore in the category of "special tools" not normally required, which
 837 ## configure does not have to check for (eg autoconf itself).
 838 ## In a Bazaar checkout on the other hand, the manuals are not included.
 839 ## So makeinfo is a requirement to build from Bazaar, and configure
 840 ## should test for it as it does for any other build requirement.
 841 ## We use the presence of $srcdir/info/emacs to distinguish a release,
 842 ## with pre-built manuals, from a Bazaar checkout.
 843 HAVE_MAKEINFO=yes
 844
 845 if test "$MAKEINFO" = "no"; then
 846   MAKEINFO=makeinfo
 847   if test "x${with_makeinfo}" = "xno"; then
 848     HAVE_MAKEINFO=no
 849   elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
 850     AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.7, and your
 851 source tree does not seem to have pre-built manuals in the `info' directory.
 852 Either install a suitable version of makeinfo, or re-run configure
 853 with the `--without-makeinfo' option to build without the manuals.] )
 854   fi
 855 fi
 856 AC_SUBST(HAVE_MAKEINFO)
 857
 858 dnl Just so that there is only a single place we need to edit.
 859 INFO_EXT=.info
 860 INFO_OPTS=--no-split
 861 AC_SUBST(INFO_EXT)
 862 AC_SUBST(INFO_OPTS)
 863
 864 dnl Add our options to ac_link now, after it is set up.
 865
 866 if test x$GCC = xyes; then
 867   test "x$GCC_LINK_TEST_OPTIONS" != x && \
 868     ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
 869 else
 870   test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
 871     ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
 872 fi
 873
 874 dnl We need -znocombreloc if we're using a relatively recent GNU ld.
 875 dnl If we can link with the flag, it shouldn't do any harm anyhow.
 876 dnl (Don't use `-z nocombreloc' as -z takes no arg on Irix.)
 877 dnl Treat GCC specially since it just gives a non-fatal `unrecognized option'
 878 dnl if not built to support GNU ld.
 879
 880 late_LDFLAGS=$LDFLAGS
 881 if test x$GCC = xyes; then
 882   LDFLAGS="$LDFLAGS -Wl,-znocombreloc"
 883 else
 884   LDFLAGS="$LDFLAGS -znocombreloc"
 885 fi
 886
 887 AC_MSG_CHECKING([for -znocombreloc])
 888 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
 889   [AC_MSG_RESULT(yes)],
 890   LDFLAGS=$late_LDFLAGS
 891   [AC_MSG_RESULT(no)])
 892
 893
 894 dnl The function dump-emacs will not be defined and temacs will do
 895 dnl (load "loadup") automatically unless told otherwise.
 896 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
 897 case "$opsys" in
 898   your-opsys-here) CANNOT_DUMP=yes ;;
 899 esac
 900
 901 test "$CANNOT_DUMP" = "yes" && \
 902   AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
 903
 904 AC_SUBST(CANNOT_DUMP)
 905
 906
 907 UNEXEC_OBJ=unexelf.o
 908 case "$opsys" in
 909   # MSDOS uses unexcoff.o
 910   # MSWindows uses unexw32.o
 911   aix4-2)
 912    UNEXEC_OBJ=unexaix.o
 913    ;;
 914   cygwin)
 915    UNEXEC_OBJ=unexcw.o
 916    ;;
 917   darwin)
 918    UNEXEC_OBJ=unexmacosx.o
 919    ;;
 920   hpux10-20 | hpux11)
 921    UNEXEC_OBJ=unexhp9k800.o
 922    ;;
 923   sol2-10)
 924    # Use the Solaris dldump() function, called from unexsol.c, to dump
 925    # emacs, instead of the generic ELF dump code found in unexelf.c.
 926    # The resulting binary has a complete symbol table, and is better
 927    # for debugging and other observability tools (debuggers, pstack, etc).
 928    #
 929    # If you encounter a problem using dldump(), please consider sending
 930    # a message to the OpenSolaris tools-linking mailing list:
 931    #      http://mail.opensolaris.org/mailman/listinfo/tools-linking
 932    #
 933    # It is likely that dldump() works with older Solaris too, but this has
 934    # not been tested, so for now this change is for Solaris 10 or newer.
 935    UNEXEC_OBJ=unexsol.o
 936    ;;
 937 esac
 938
 939 LD_SWITCH_SYSTEM=
 940 case "$opsys" in
 941   freebsd)
 942    ## Let `ld' find image libs and similar things in /usr/local/lib.
 943    ## The system compiler, GCC, has apparently been modified to not
 944    ## look there, contrary to what a stock GCC would do.
 945 ### It's not our place to do this.  See bug#10313#17.
 946 ###   LD_SWITCH_SYSTEM=-L/usr/local/lib
 947       :
 948    ;;
 949
 950   gnu-linux)
 951    ## cpp test was "ifdef __mips__", but presumably this is equivalent...
 952    case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
 953    ;;
 954
 955   netbsd)
 956 ### It's not our place to do this.  See bug#10313#17.
 957 ###   LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
 958       :
 959    ;;
 960
 961   openbsd)
 962    ## Han Boetes <han@mijncomputer.nl> says this is necessary,
 963    ## otherwise Emacs dumps core on elf systems.
 964    LD_SWITCH_SYSTEM="-Z"
 965    ;;
 966 esac
 967 AC_SUBST(LD_SWITCH_SYSTEM)
 968
 969 ac_link="$ac_link $LD_SWITCH_SYSTEM"
 970
 971 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
 972 ## which has not been defined yet.  When this was handled with cpp,
 973 ## it was expanded to null when configure sourced the s/*.h file.
 974 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
 975 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
 976 ## (or somesuch), but because it is supposed to go at the _front_
 977 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
 978 ## Compare with the gnu-linux case below, which added to the end
 979 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
 980 ## LD_SWITCH_SYSTEM_TEMACS.
 981 case "$opsys" in
 982   netbsd|openbsd)
 983    LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
 984 esac
 985
 986
 987 C_SWITCH_MACHINE=
 988 case $canonical in
 989  alpha*)
 990   AC_CHECK_DECL([__ELF__])
 991   if test "$ac_cv_have_decl___ELF__" = "yes"; then
 992     ## With ELF, make sure that all common symbols get allocated to in the
 993     ## data section.  Otherwise, the dump of temacs may miss variables in
 994     ## the shared library that have been initialized.  For example, with
 995     ## GNU libc, __malloc_initialized would normally be resolved to the
 996     ## shared library's .bss section, which is fatal.
 997     if test "x$GCC" = "xyes"; then
 998       C_SWITCH_MACHINE="-fno-common"
 999     else
1000       AC_MSG_ERROR([What gives?  Fix me if DEC Unix supports ELF now.])
1001     fi
1002   else
1003     UNEXEC_OBJ=unexalpha.o
1004   fi
1005   ;;
1006 esac
1007 AC_SUBST(C_SWITCH_MACHINE)
1008
1009 AC_SUBST(UNEXEC_OBJ)
1010
1011 C_SWITCH_SYSTEM=
1012 ## Some programs in src produce warnings saying certain subprograms
1013 ## are too complex and need a MAXMEM value greater than 2000 for
1014 ## additional optimization.  --nils@exp-math.uni-essen.de
1015 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1016   C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1017 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1018 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1019 AC_SUBST(C_SWITCH_SYSTEM)
1020
1021
1022 LIBS_SYSTEM=
1023 case "$opsys" in
1024   ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1025   aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1026
1027   freebsd) LIBS_SYSTEM="-lutil" ;;
1028
1029   hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1030
1031   sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1032
1033   ## Motif needs -lgen.
1034   unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1035 esac
1036 AC_SUBST(LIBS_SYSTEM)
1037
1038
1039 ### Make sure subsequent tests use flags consistent with the build flags.
1040
1041 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1042   CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1043 else
1044   CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1045 fi
1046
1047 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C89 or better.
1048 AC_DEFUN([AC_TYPE_SIZE_T])
1049 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1050 AC_DEFUN([AC_TYPE_UID_T])
1051
1052
1053 LIB_MATH=-lm
1054 LIB_STANDARD=
1055 START_FILES=
1056 dnl Current possibilities handled by sed (aix4-2 -> aix,
1057 dnl gnu-linux -> gnu/linux, etc.):
1058 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux, irix.
1059 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1060 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1061
1062 dnl NB do not use CRT_DIR unquoted here, since it might not be set yet.
1063 case $opsys in
1064   cygwin )
1065     LIB_MATH=
1066     START_FILES='pre-crt0.o'
1067     ;;
1068   darwin )
1069     ## Adding -lm confuses the dynamic linker, so omit it.
1070     LIB_MATH=
1071     START_FILES='pre-crt0.o'
1072     ;;
1073   freebsd )
1074     LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtn.o'
1075     START_FILES='pre-crt0.o $(CRT_DIR)/crt1.o $(CRT_DIR)/crti.o'
1076     SYSTEM_TYPE=berkeley-unix
1077     ;;
1078   gnu-linux | gnu-kfreebsd )
1079     LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtn.o'
1080     START_FILES='pre-crt0.o $(CRT_DIR)/crt1.o $(CRT_DIR)/crti.o'
1081     ;;
1082   hpux10-20 | hpux11 )
1083     LIB_STANDARD=-lc
1084     START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o'
1085     ;;
1086   dnl NB this may be adjusted below.
1087   netbsd | openbsd )
1088     LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtend.o'
1089     START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o $(CRT_DIR)/crtbegin.o'
1090     SYSTEM_TYPE=berkeley-unix
1091     ;;
1092
1093   sol2* | unixware )
1094     SYSTEM_TYPE=usg-unix-v
1095     ;;
1096
1097 esac
1098
1099 AC_SUBST(LIB_MATH)
1100 AC_SUBST(START_FILES)
1101 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1102   [The type of system you are compiling for; sets `system-type'.])
1103
1104 dnl Not all platforms use crtn.o files.  Check if the current one does.
1105 crt_files=
1106
1107 for file in x $LIB_STANDARD $START_FILES; do
1108   case "$file" in
1109     *CRT_DIR*) crt_files="$crt_files `echo $file | sed -e 's|.*/||'`" ;;
1110   esac
1111 done
1112
1113 if test "x$crt_files" != x; then
1114
1115   ## If user specified a crt-dir, use that unconditionally.
1116   crt_gcc=no
1117
1118   if test "X$CRT_DIR" = "X"; then
1119
1120     CRT_DIR=/usr/lib            # default
1121
1122     case "$canonical" in
1123       x86_64-*-linux-gnu* | s390x-*-linux-gnu*)
1124       ## On x86-64 and s390x GNU/Linux distributions, the standard library
1125       ## can be in a variety of places.  We only try /usr/lib64 and /usr/lib.
1126       ## For anything else (eg /usr/lib32), it is up the user to specify
1127       ## the location (bug#5655).
1128       ## Test for crtn.o, not just the directory, because sometimes the
1129       ## directory exists but does not have the relevant files (bug#1287).
1130       ## FIXME better to test for binary compatibility somehow.
1131       test -e /usr/lib64/crtn.o && CRT_DIR=/usr/lib64
1132       ;;
1133
1134       powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*) CRT_DIR=/usr/lib64 ;;
1135     esac
1136
1137     case "$opsys" in
1138       hpux10-20) CRT_DIR=/lib ;;
1139     esac
1140
1141     test "x${GCC}" = xyes && crt_gcc=yes
1142
1143   fi                            # CRT_DIR = ""
1144
1145   crt_missing=
1146
1147   for file in $crt_files; do
1148
1149     ## If we're using gcc, try to determine it automatically by asking
1150     ## gcc.  [If this doesn't work, CRT_DIR will remain at the
1151     ## system-dependent default from above.]
1152     if test $crt_gcc = yes && test ! -e $CRT_DIR/$file; then
1153
1154        crt_file=`$CC --print-file-name=$file 2>/dev/null`
1155        case "$crt_file" in
1156          */*)
1157            CRT_DIR=`AS_DIRNAME(["$crt_file"])`
1158            ;;
1159        esac
1160     fi
1161
1162     dnl We expect all the files to be in a single directory, so after the
1163     dnl first there is no point asking gcc.
1164     crt_gcc=no
1165
1166     test -e $CRT_DIR/$file || crt_missing="$crt_missing $file"
1167   done                          # $crt_files
1168
1169   test "x$crt_missing" = x || \
1170     AC_MSG_ERROR([Required file(s) not found:$crt_missing
1171 Try using the --with-crt-dir option.])
1172
1173 fi                              # crt_files != ""
1174
1175 AC_SUBST(CRT_DIR)
1176
1177 case $opsys in
1178   netbsd | openbsd )
1179     if test -f $CRT_DIR/crti.o; then
1180
1181         test -f $CRT_DIR/crtn.o || \
1182           AC_MSG_ERROR([Required file not found: crtn.o])
1183
1184         LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtend.o $(CRT_DIR)/crtn.o'
1185         START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o $(CRT_DIR)/crti.o $(CRT_DIR)/crtbegin.o'
1186     fi
1187     ;;
1188 esac
1189
1190
1191 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1192 pre_PKG_CONFIG_LIBS=$LIBS
1193
1194 AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
1195
1196 dnl This function definition taken from Gnome 2.0
1197 dnl PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4, action-if, action-not)
1198 dnl defines GSTUFF_LIBS, GSTUFF_CFLAGS, see pkg-config man page
1199 dnl also defines GSTUFF_PKG_ERRORS on error
1200 AC_DEFUN([PKG_CHECK_MODULES], [
1201   succeeded=no
1202
1203   if test "$PKG_CONFIG" = "no" ; then
1204      ifelse([$4], , [AC_MSG_ERROR([
1205       *** The pkg-config script could not be found. Make sure it is in your path, or give the full name of pkg-config with the PKG_CONFIG environment variable or --with-pkg-config-prog.  Or see http://www.freedesktop.org/software/pkgconfig to get pkg-config.])], [$4])
1206   else
1207      PKG_CONFIG_MIN_VERSION=0.9.0
1208      if "$PKG_CONFIG" --atleast-pkgconfig-version $PKG_CONFIG_MIN_VERSION; then
1209         AC_MSG_CHECKING(for $2)
1210
1211         if "$PKG_CONFIG" --exists "$2" 2>&AS_MESSAGE_LOG_FD &&
1212            $1_CFLAGS=`"$PKG_CONFIG" --cflags "$2" 2>&AS_MESSAGE_LOG_FD` &&
1213            $1_LIBS=`"$PKG_CONFIG" --libs "$2" 2>&AS_MESSAGE_LOG_FD`; then
1214             edit_cflags="
1215               s,///*,/,g
1216               s/^/ /
1217               s/ -I/ $isystem/g
1218               s/^ //
1219             "
1220             $1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1221             $1_LIBS=`AS_ECHO(["$$1_LIBS"]) | sed -e 's,///*,/,g'`
1222             AC_MSG_RESULT([yes CFLAGS='$$1_CFLAGS' LIBS='$$1_LIBS'])
1223             succeeded=yes
1224         else
1225             AC_MSG_RESULT(no)
1226             $1_CFLAGS=""
1227             $1_LIBS=""
1228             ## If we have a custom action on failure, don't print errors, but
1229             ## do set a variable so people can do so.  Do it in a subshell
1230             ## to capture any diagnostics in invoking pkg-config.
1231             $1_PKG_ERRORS=`("$PKG_CONFIG" --print-errors "$2") 2>&1`
1232             ifelse([$4], ,echo "$$1_PKG_ERRORS",)
1233         fi
1234
1235         AC_SUBST($1_CFLAGS)
1236         AC_SUBST($1_LIBS)
1237      else
1238         echo "*** Your version of pkg-config is too old. You need version $PKG_CONFIG_MIN_VERSION or newer."
1239         echo "*** See http://www.freedesktop.org/software/pkgconfig"
1240      fi
1241   fi
1242
1243   if test $succeeded = yes; then
1244      ifelse([$3], , :, [$3])
1245   else
1246      ifelse([$4], , [AC_MSG_ERROR([Library requirements ($2) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them.])], [$4])
1247   fi
1248 ])
1249
1250
1251 if test "${with_sound}" != "no"; then
1252   # Sound support for GNU/Linux and the free BSDs.
1253   AC_CHECK_HEADERS(machine/soundcard.h sys/soundcard.h soundcard.h,
1254     have_sound_header=yes)
1255   # Emulation library used on NetBSD.
1256   AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1257   AC_SUBST(LIBSOUND)
1258
1259   ALSA_REQUIRED=1.0.0
1260   ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1261   PKG_CHECK_MODULES(ALSA, $ALSA_MODULES, HAVE_ALSA=yes, HAVE_ALSA=no)
1262   if test $HAVE_ALSA = yes; then
1263     SAVE_CFLAGS="$CFLAGS"
1264     SAVE_LIBS="$LIBS"
1265     CFLAGS="$ALSA_CFLAGS $CFLAGS"
1266     LIBS="$ALSA_LIBS $LIBS"
1267     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1268                     emacs_alsa_normal=yes,
1269                     emacs_alsa_normal=no)
1270     if test "$emacs_alsa_normal" != yes; then
1271       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1272                      [[snd_lib_error_set_handler (0);]])],
1273                      emacs_alsa_subdir=yes,
1274                      emacs_alsa_subdir=no)
1275       if test "$emacs_alsa_subdir" != yes; then
1276         AC_MSG_ERROR([pkg-config found alsa, but it does not compile.  See config.log for error messages.])
1277       fi
1278       ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1279     fi
1280
1281     CFLAGS="$SAVE_CFLAGS"
1282     LIBS="$SAVE_LIBS"
1283     LIBSOUND="$LIBSOUND $ALSA_LIBS"
1284     CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1285     AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1286   fi
1287
1288   dnl Define HAVE_SOUND if we have sound support.  We know it works and
1289   dnl compiles only on the specified platforms.  For others, it
1290   dnl probably doesn't make sense to try.
1291   if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1292      case "$opsys" in
1293        dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1294        gnu-linux|freebsd|netbsd)
1295          AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1296          ;;
1297      esac
1298   fi
1299
1300   AC_SUBST(CFLAGS_SOUND)
1301 fi
1302
1303 dnl checks for header files
1304 AC_CHECK_HEADERS_ONCE(
1305   linux/version.h sys/systeminfo.h
1306   coff.h pty.h
1307   sys/vlimit.h sys/resource.h
1308   sys/utsname.h pwd.h utmp.h util.h)
1309
1310 AC_MSG_CHECKING(if personality LINUX32 can be set)
1311 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/personality.h>]], [[personality (PER_LINUX32)]])],
1312                emacs_cv_personality_linux32=yes,
1313                emacs_cv_personality_linux32=no)
1314 AC_MSG_RESULT($emacs_cv_personality_linux32)
1315
1316 if test $emacs_cv_personality_linux32 = yes; then
1317   AC_DEFINE(HAVE_PERSONALITY_LINUX32, 1,
1318             [Define to 1 if personality LINUX32 can be set.])
1319 fi
1320
1321 dnl On Solaris 8 there's a compilation warning for term.h because
1322 dnl it doesn't define `bool'.
1323 AC_CHECK_HEADERS(term.h, , , -)
1324 AC_HEADER_TIME
1325 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1326                                       ]])
1327 if test $ac_cv_have_decl_sys_siglist != yes; then
1328   # For Tru64, at least:
1329   AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1330                                           ]])
1331   if test $ac_cv_have_decl___sys_siglist = yes; then
1332     AC_DEFINE(sys_siglist, __sys_siglist,
1333               [Define to any substitute for sys_siglist.])
1334   fi
1335 fi
1336 AC_HEADER_SYS_WAIT
1337
1338 dnl Check for speed_t typedef.
1339 AC_CACHE_CHECK(for speed_t, emacs_cv_speed_t,
1340   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <termios.h>]], [[speed_t x = 1;]])],
1341     emacs_cv_speed_t=yes, emacs_cv_speed_t=no)])
1342 if test $emacs_cv_speed_t = yes; then
1343   AC_DEFINE(HAVE_SPEED_T, 1,
1344            [Define to 1 if `speed_t' is declared by <termios.h>.])
1345 fi
1346
1347 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1348 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1349 #if HAVE_SYS_SOCKET_H
1350 #include <sys/socket.h>
1351 #endif])
1352 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1353 #if HAVE_SYS_SOCKET_H
1354 #include <sys/socket.h>
1355 #endif])
1356 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1357 #if HAVE_SYS_SOCKET_H
1358 #include <sys/socket.h>
1359 #endif])
1360
1361 dnl checks for structure members
1362 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1363                   struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1364                   struct ifreq.ifr_addr,
1365                   struct ifreq.ifr_addr.sa_len], , ,
1366                  [AC_INCLUDES_DEFAULT
1367 #if HAVE_SYS_SOCKET_H
1368 #include <sys/socket.h>
1369 #endif
1370 #if HAVE_NET_IF_H
1371 #include <net/if.h>
1372 #endif])
1373
1374 dnl Check for endianness.
1375 dnl AC_C_BIGENDIAN is done by gnulib.
1376
1377 dnl check for Make feature
1378 dnl AC_PROG_MAKE_SET is done by Automake.
1379
1380 DEPFLAGS=
1381 MKDEPDIR=":"
1382 deps_frag=deps.mk
1383 dnl check for GNU Make if we have GCC and autodepend is on.
1384 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1385    AC_MSG_CHECKING([whether we are using GNU Make])
1386    HAVE_GNU_MAKE=no
1387    testval=`${MAKE-make} --version 2>/dev/null | grep 'GNU Make'`
1388    if test "x$testval" != x; then
1389       HAVE_GNU_MAKE=yes
1390    else
1391       ac_enable_autodepend=no
1392    fi
1393    AC_MSG_RESULT([$HAVE_GNU_MAKE])
1394    if test $HAVE_GNU_MAKE = yes; then
1395       AC_MSG_CHECKING([whether gcc understands -MMD -MF])
1396       SAVE_CFLAGS="$CFLAGS"
1397       CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1398       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], , ac_enable_autodepend=no)
1399       CFLAGS="$SAVE_CFLAGS"
1400       test -f deps.d || ac_enable_autodepend=no
1401       rm -rf deps.d
1402       AC_MSG_RESULT([$ac_enable_autodepend])
1403    fi
1404    if test $ac_enable_autodepend = yes; then
1405       DEPFLAGS='-MMD -MF ${DEPDIR}/$*.d -MP'
1406       ## MKDIR_P is documented (see AC_PROG_MKDIR_P) to be parallel-safe.
1407       MKDEPDIR='${MKDIR_P} ${DEPDIR}'
1408       deps_frag=autodeps.mk
1409    fi
1410 fi
1411 deps_frag=$srcdir/src/$deps_frag
1412 AC_SUBST(MKDEPDIR)
1413 AC_SUBST(DEPFLAGS)
1414 AC_SUBST_FILE(deps_frag)
1415
1416
1417 lisp_frag=$srcdir/src/lisp.mk
1418 AC_SUBST_FILE(lisp_frag)
1419
1420
1421 dnl checks for operating system services
1422 AC_SYS_LONG_FILE_NAMES
1423
1424 #### Choose a window system.
1425
1426 ## We leave window_system equal to none if
1427 ## we end up building without one.  Any new window system should
1428 ## set window_system to an appropriate value and add objects to
1429 ## window-system-specific substs.
1430
1431 window_system=none
1432 AC_PATH_X
1433 if test "$no_x" != yes; then
1434   window_system=x11
1435 fi
1436
1437 LD_SWITCH_X_SITE_RPATH=
1438 if test "${x_libraries}" != NONE; then
1439   if test -n "${x_libraries}"; then
1440     LD_SWITCH_X_SITE=-L`echo ${x_libraries} | sed -e "s/:/ -L/g"`
1441     LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`echo ${x_libraries} | sed -e "s/:/ -Wl,-rpath,/g"`
1442   fi
1443   x_default_search_path=""
1444   x_search_path=${x_libraries}
1445   if test -z "${x_search_path}"; then
1446     x_search_path=/usr/lib
1447   fi
1448   for x_library in `echo ${x_search_path}: | \
1449                     sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1450     x_search_path="\
1451 ${x_library}/X11/%L/%T/%N%C%S:\
1452 ${x_library}/X11/%l/%T/%N%C%S:\
1453 ${x_library}/X11/%T/%N%C%S:\
1454 ${x_library}/X11/%L/%T/%N%S:\
1455 ${x_library}/X11/%l/%T/%N%S:\
1456 ${x_library}/X11/%T/%N%S"
1457     if test x"${x_default_search_path}" = x; then
1458       x_default_search_path=${x_search_path}
1459     else
1460       x_default_search_path="${x_search_path}:${x_default_search_path}"
1461     fi
1462   done
1463 fi
1464 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1465
1466 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1467   C_SWITCH_X_SITE="$isystem"`echo ${x_includes} | sed -e "s/:/ $isystem/g"`
1468 fi
1469
1470 if test x"${x_includes}" = x; then
1471   bitmapdir=/usr/include/X11/bitmaps
1472 else
1473   # accumulate include directories that have X11 bitmap subdirectories
1474   bmd_acc="dummyval"
1475   for bmd in `echo ${x_includes} | sed -e "s/:/ /g"`; do
1476     if test -d "${bmd}/X11/bitmaps"; then
1477       bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1478     fi
1479     if test -d "${bmd}/bitmaps"; then
1480       bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1481     fi
1482   done
1483   if test ${bmd_acc} != "dummyval"; then
1484     bitmapdir=`echo ${bmd_acc} | sed -e "s/^dummyval://"`
1485   fi
1486 fi
1487
1488 HAVE_NS=no
1489 NS_IMPL_COCOA=no
1490 NS_IMPL_GNUSTEP=no
1491 tmp_CPPFLAGS="$CPPFLAGS"
1492 tmp_CFLAGS="$CFLAGS"
1493 CPPFLAGS="$CPPFLAGS -x objective-c"
1494 CFLAGS="$CFLAGS -x objective-c"
1495 GNU_OBJC_CFLAGS=
1496 LIBS_GNUSTEP=
1497 if test "${with_ns}" != no; then
1498   if test "${opsys}" = darwin; then
1499      NS_IMPL_COCOA=yes
1500      ns_appdir=`pwd`/nextstep/Emacs.app
1501      ns_appbindir=${ns_appdir}/Contents/MacOS
1502      ns_appresdir=${ns_appdir}/Contents/Resources
1503      ns_appsrc=Cocoa/Emacs.base
1504   elif test -f $GNUSTEP_CONFIG_FILE; then
1505      NS_IMPL_GNUSTEP=yes
1506      ns_appdir=`pwd`/nextstep/Emacs.app
1507      ns_appbindir=${ns_appdir}
1508      ns_appresdir=${ns_appdir}/Resources
1509      ns_appsrc=GNUstep/Emacs.base
1510      dnl FIXME sourcing this several times in subshells seems inefficient.
1511      GNUSTEP_SYSTEM_HEADERS="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_SYSTEM_HEADERS)"
1512      GNUSTEP_SYSTEM_LIBRARIES="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_SYSTEM_LIBRARIES)"
1513      dnl I seemed to need these as well with GNUstep-startup 0.25.
1514      GNUSTEP_LOCAL_HEADERS="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_LOCAL_HEADERS)"
1515      GNUSTEP_LOCAL_LIBRARIES="$(. $GNUSTEP_CONFIG_FILE; echo $GNUSTEP_LOCAL_LIBRARIES)"
1516      test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1517        GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1518      test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1519        GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1520      CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1521      CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1522      LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1523      LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1524      LIB_STANDARD=
1525      START_FILES=
1526      dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1527      dnl If they had chosen to either define it or not, we could have
1528      dnl just used AC_CHECK_DECL here.
1529      AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1530        emacs_cv_objc_exceptions,
1531 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1532 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1533 1;
1534 #else
1535 fail;
1536 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1537      if test $emacs_cv_objc_exceptions = yes; then
1538        dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1539        AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1540          [Define if GNUstep uses ObjC exceptions.])
1541        GNU_OBJC_CFLAGS="-fobjc-exceptions"
1542      fi
1543   fi
1544
1545   dnl This is only used while we test the NS headers, it gets reset below.
1546   CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1547
1548   AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1549                   [AC_MSG_ERROR([`--with-ns' was specified, but the include
1550   files are missing or cannot be compiled.])])
1551
1552   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1553                                      [
1554 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1555 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1040
1556  ; /* OK */
1557 #else
1558 #error "OSX 10.4 or newer required"
1559 #endif
1560 #endif
1561                     ])],
1562                     ns_osx_have_104=yes,
1563                     ns_osx_have_104=no)
1564   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <Foundation/NSObjCRuntime.h>],
1565                                      [NSInteger i;])],
1566                     ns_have_nsinteger=yes,
1567                     ns_have_nsinteger=no)
1568   if test $ns_osx_have_104 = no; then
1569      AC_MSG_ERROR([`OSX 10.4 or newer is required']);
1570   fi
1571   if test $ns_have_nsinteger = yes; then
1572     AC_DEFINE(NS_HAVE_NSINTEGER, 1, [Define to 1 if `NSInteger' is defined.])
1573   fi
1574 fi
1575
1576 AC_SUBST(LIBS_GNUSTEP)
1577
1578 INSTALL_ARCH_INDEP_EXTRA=install-etc
1579 ns_self_contained=no
1580 NS_OBJ=
1581 NS_OBJC_OBJ=
1582 if test "${HAVE_NS}" = yes; then
1583   if test "$with_toolkit_scroll_bars" = "no"; then
1584     AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1585   fi
1586
1587   window_system=nextstep
1588   # set up packaging dirs
1589   if test "${EN_NS_SELF_CONTAINED}" = yes; then
1590      ns_self_contained=yes
1591      prefix=${ns_appresdir}
1592      exec_prefix=${ns_appbindir}
1593      dnl This one isn't really used, only archlibdir is.
1594      libexecdir="\${ns_appbindir}/libexec"
1595      archlibdir="\${ns_appbindir}/libexec"
1596      docdir="\${ns_appresdir}/etc"
1597      etcdir="\${ns_appresdir}/etc"
1598      dnl FIXME maybe set datarootdir instead.
1599      dnl That would also get applications, icons, man.
1600      infodir="\${ns_appresdir}/info"
1601      mandir="\${ns_appresdir}/man"
1602      lispdir="\${ns_appresdir}/lisp"
1603      leimdir="\${ns_appresdir}/leim"
1604      INSTALL_ARCH_INDEP_EXTRA=
1605   fi
1606   NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o nsfont.o"
1607 fi
1608 CFLAGS="$tmp_CFLAGS"
1609 CPPFLAGS="$tmp_CPPFLAGS"
1610 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
1611 AC_SUBST(ns_self_contained)
1612 AC_SUBST(NS_OBJ)
1613 AC_SUBST(NS_OBJC_OBJ)
1614 AC_SUBST(LIB_STANDARD)
1615
1616 HAVE_W32=no
1617 W32_OBJ=
1618 W32_LIBS=
1619 W32_RES=
1620 W32_RES_LINK=
1621 if test "${with_w32}" != no; then
1622   if test "${opsys}" != "cygwin"; then
1623     AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin.])
1624   fi
1625   AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
1626                   [AC_MSG_ERROR([`--with-w32' was specified, but windows.h
1627                   cannot be found.])])
1628   AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
1629   AC_CHECK_TOOL(WINDRES, [windres],
1630                 [AC_MSG_ERROR([No resource compiler found.])])
1631   W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
1632   W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o"
1633   W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lgdi32 -lole32 -lcomdlg32"
1634   W32_LIBS="$W32_LIBS -lusp10 -lcomctl32 -lwinspool"
1635   W32_RES="emacs.res"
1636   # Tell the linker that emacs.res is an object (which we compile from
1637   # the rc file), not a linker script.
1638   W32_RES_LINK="-Wl,-bpe-i386 -Wl,emacs.res"
1639 fi
1640 AC_SUBST(W32_OBJ)
1641 AC_SUBST(W32_LIBS)
1642 AC_SUBST(W32_RES)
1643 AC_SUBST(W32_RES_LINK)
1644
1645 if test "${HAVE_W32}" = "yes"; then
1646   window_system=w32
1647   with_xft=no
1648 fi
1649
1650 ## $window_system is now set to the window system we will
1651 ## ultimately use.
1652
1653 term_header=
1654 HAVE_X_WINDOWS=no
1655 HAVE_X11=no
1656 USE_X_TOOLKIT=none
1657
1658 case "${window_system}" in
1659   x11 )
1660     HAVE_X_WINDOWS=yes
1661     HAVE_X11=yes
1662     term_header=xterm.h
1663     case "${with_x_toolkit}" in
1664       athena | lucid ) USE_X_TOOLKIT=LUCID ;;
1665       motif ) USE_X_TOOLKIT=MOTIF ;;
1666       gtk ) with_gtk=yes
1667             term_header=gtkutil.h
1668 dnl Don't set this for GTK.  A lot of tests below assumes Xt when
1669 dnl USE_X_TOOLKIT is set.
1670             USE_X_TOOLKIT=none ;;
1671       gtk2 ) with_gtk2=yes
1672              term_header=gtkutil.h
1673              USE_X_TOOLKIT=none ;;
1674       gtk3 ) with_gtk3=yes
1675              term_header=gtkutil.h
1676              USE_X_TOOLKIT=none ;;
1677       no ) USE_X_TOOLKIT=none ;;
1678 dnl If user did not say whether to use a toolkit, make this decision later:
1679 dnl use the toolkit if we have gtk, or X11R5 or newer.
1680       * ) USE_X_TOOLKIT=maybe ;;
1681     esac
1682   ;;
1683   nextstep )
1684     term_header=nsterm.h
1685   ;;
1686   w32 )
1687     term_header=w32term.h
1688   ;;
1689 esac
1690
1691 if test -n "${term_header}"; then
1692     AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
1693         [Define to the header for the built-in window system.])
1694 fi
1695
1696 if test "$window_system" = none && test "X$with_x" != "Xno"; then
1697    AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
1698    if test "$HAVE_XSERVER" = true ||
1699       test -n "$DISPLAY" ||
1700       test "`echo /usr/lib/libX11.*`" != "/usr/lib/libX11.*"; then
1701         AC_MSG_ERROR([You seem to be running X, but no X development libraries
1702 were found.  You should install the relevant development files for X
1703 and for the toolkit you want, such as Gtk+, Lesstif or Motif.  Also make
1704 sure you have development files for image handling, i.e.
1705 tiff, gif, jpeg, png and xpm.
1706 If you are sure you want Emacs compiled without X window support, pass
1707   --without-x
1708 to configure.])
1709    fi
1710 fi
1711
1712 ### If we're using X11, we should use the X menu package.
1713 HAVE_MENUS=no
1714 case ${HAVE_X11} in
1715   yes ) HAVE_MENUS=yes ;;
1716 esac
1717
1718 # Does the opsystem file prohibit the use of the GNU malloc?
1719 # Assume not, until told otherwise.
1720 GNU_MALLOC=yes
1721
1722 AC_CACHE_CHECK(
1723   [whether malloc is Doug Lea style],
1724   [emacs_cv_var_doug_lea_malloc],
1725   [AC_LINK_IFELSE(
1726      [AC_LANG_PROGRAM(
1727         [[#include <malloc.h>
1728           static void hook (void) {}]],
1729         [[malloc_set_state (malloc_get_state ());
1730           __after_morecore_hook = hook;
1731           __malloc_initialize_hook = hook;]])],
1732      [emacs_cv_var_doug_lea_malloc=yes],
1733      [emacs_cv_var_doug_lea_malloc=no])])
1734 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
1735
1736
1737 dnl See comments in aix4-2.h about maybe using system malloc there.
1738 system_malloc=no
1739 case "$opsys" in
1740   ## darwin ld insists on the use of malloc routines in the System framework.
1741   darwin|sol2-10) system_malloc=yes ;;
1742 esac
1743
1744 if test "${system_malloc}" = "yes"; then
1745   AC_DEFINE(SYSTEM_MALLOC, 1, [Define to use system malloc.])
1746   GNU_MALLOC=no
1747   GNU_MALLOC_reason="
1748     (The GNU allocators don't work with this system configuration.)"
1749   GMALLOC_OBJ=
1750   VMLIMIT_OBJ=
1751 else
1752   test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
1753   VMLIMIT_OBJ=vm-limit.o
1754 fi
1755 AC_SUBST(GMALLOC_OBJ)
1756 AC_SUBST(VMLIMIT_OBJ)
1757
1758 if test "$doug_lea_malloc" = "yes" ; then
1759   if test "$GNU_MALLOC" = yes ; then
1760     GNU_MALLOC_reason="
1761       (Using Doug Lea's new malloc from the GNU C Library.)"
1762   fi
1763   AC_DEFINE(DOUG_LEA_MALLOC, 1,
1764             [Define to 1 if you are using the GNU C Library.])
1765
1766   ## Use mmap directly for allocating larger buffers.
1767   ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
1768   ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
1769   ## Does the AC_FUNC_MMAP test below make this check unnecessary?
1770   case "$opsys" in
1771     gnu*) REL_ALLOC=no ;;
1772   esac
1773 fi
1774
1775 if test x"${REL_ALLOC}" = x; then
1776   REL_ALLOC=${GNU_MALLOC}
1777 fi
1778
1779 use_mmap_for_buffers=no
1780 case "$opsys" in
1781   cygwin|freebsd|irix6-5) use_mmap_for_buffers=yes ;;
1782 esac
1783
1784 AC_FUNC_MMAP
1785 if test $use_mmap_for_buffers = yes; then
1786   AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
1787   REL_ALLOC=no
1788 fi
1789
1790 LIBS="$LIBS_SYSTEM $LIBS"
1791
1792 dnl If found, this defines HAVE_LIBDNET, which m/pmax.h checks,
1793 dnl and also adds -ldnet to LIBS, which Autoconf uses for checks.
1794 AC_CHECK_LIB(dnet, dnet_ntoa)
1795 dnl This causes -lresolv to get used in subsequent tests,
1796 dnl which causes failures on some systems such as HPUX 9.
1797 dnl AC_CHECK_LIB(resolv, gethostbyname)
1798
1799 dnl FIXME replace main with a function we actually want from this library.
1800 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
1801
1802 dnl Check if pthreads is available.
1803 LIB_PTHREAD=
1804 AC_CHECK_HEADERS_ONCE(pthread.h)
1805 if test "$ac_cv_header_pthread_h"; then
1806   dnl gmalloc.c uses pthread_atfork, which is not available on older-style
1807   dnl hosts such as MirBSD 10, so test for pthread_atfork instead of merely
1808   dnl testing for pthread_self if Emacs uses gmalloc.c.
1809   if test "$GMALLOC_OBJ" = gmalloc.o; then
1810     emacs_pthread_function=pthread_atfork
1811   else
1812     emacs_pthread_function=pthread_self
1813   fi
1814   AC_CHECK_LIB(pthread, $emacs_pthread_function, HAVE_PTHREAD=yes)
1815 fi
1816 if test "$HAVE_PTHREAD" = yes; then
1817   case "${canonical}" in
1818     *-hpux*) ;;
1819     *) LIB_PTHREAD="-lpthread"
1820        LIBS="$LIB_PTHREAD $LIBS" ;;
1821   esac
1822   AC_DEFINE(HAVE_PTHREAD, 1, [Define to 1 if you have pthread (-lpthread).])
1823 fi
1824 AC_SUBST([LIB_PTHREAD])
1825
1826 AC_CHECK_LIB(pthreads, cma_open)
1827
1828 ## Note: when using cpp in s/aix4.2.h, this definition depended on
1829 ## HAVE_LIBPTHREADS.  That was not defined earlier in configure when
1830 ## the system file was sourced.  Hence the value of LIBS_SYSTEM
1831 ## added to LIBS in configure would never contain the pthreads part,
1832 ## but the value used in Makefiles might.  FIXME?
1833 ##
1834 ## -lpthreads seems to be necessary for Xlib in X11R6, and should
1835 ## be harmless on older versions of X where it happens to exist.
1836 test "$opsys" = "aix4-2" && \
1837   test $ac_cv_lib_pthreads_cma_open = yes && \
1838   LIBS_SYSTEM="$LIBS_SYSTEM -lpthreads"
1839
1840 dnl Check for need for bigtoc support on IBM AIX
1841
1842 case ${host_os} in
1843 aix*)
1844   AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
1845     case $GCC in
1846     yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
1847     *) gdb_cv_bigtoc=-bbigtoc ;;
1848     esac
1849
1850     LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
1851     AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
1852   ])
1853   ;;
1854 esac
1855
1856 # Change CFLAGS and CPPFLAGS temporarily so that C_SWITCH_X_SITE gets
1857 # used for the tests that follow.  We set them back to REAL_CFLAGS and
1858 # REAL_CPPFLAGS later on.
1859
1860 REAL_CFLAGS="$CFLAGS"
1861 REAL_CPPFLAGS="$CPPFLAGS"
1862
1863 if test "${HAVE_X11}" = "yes"; then
1864   DEFS="$C_SWITCH_X_SITE $DEFS"
1865   LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
1866   LIBS="-lX11 $LIBS"
1867   CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
1868   CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
1869
1870   # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
1871   # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
1872   # but it's more convenient here to set LD_RUN_PATH since this
1873   # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
1874   if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
1875     LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
1876     export LD_RUN_PATH
1877   fi
1878
1879   if test "${opsys}" = "gnu-linux"; then
1880     AC_MSG_CHECKING(whether X on GNU/Linux needs -b to link)
1881     AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
1882      [[XOpenDisplay ("foo");]])],
1883      [xgnu_linux_first_failure=no],
1884      [xgnu_linux_first_failure=yes])
1885     if test "${xgnu_linux_first_failure}" = "yes"; then
1886       OLD_LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE"
1887       OLD_C_SWITCH_X_SITE="$C_SWITCH_X_SITE"
1888       OLD_CPPFLAGS="$CPPFLAGS"
1889       OLD_LIBS="$LIBS"
1890       LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
1891       C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
1892       CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
1893       LIBS="$LIBS -b i486-linuxaout"
1894       AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
1895        [[XOpenDisplay ("foo");]])],
1896        [xgnu_linux_second_failure=no],
1897        [xgnu_linux_second_failure=yes])
1898       if test "${xgnu_linux_second_failure}" = "yes"; then
1899         # If we get the same failure with -b, there is no use adding -b.
1900         # So take it out.  This plays safe.
1901         LD_SWITCH_X_SITE="$OLD_LD_SWITCH_X_SITE"
1902         C_SWITCH_X_SITE="$OLD_C_SWITCH_X_SITE"
1903         CPPFLAGS="$OLD_CPPFLAGS"
1904         LIBS="$OLD_LIBS"
1905         AC_MSG_RESULT(no)
1906       else
1907         AC_MSG_RESULT(yes)
1908       fi
1909     else
1910       AC_MSG_RESULT(no)
1911     fi
1912   fi
1913
1914   # Reportedly, some broken Solaris systems have XKBlib.h but are missing
1915   # header files included from there.
1916   AC_MSG_CHECKING(for Xkb)
1917   AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
1918 #include <X11/XKBlib.h>]],
1919         [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
1920         emacs_xkb=yes, emacs_xkb=no)
1921   AC_MSG_RESULT($emacs_xkb)
1922   if test $emacs_xkb = yes; then
1923     AC_DEFINE(HAVE_XKBGETKEYBOARD, 1, [Define to 1 if you have the XkbGetKeyboard function.])
1924   fi
1925
1926   AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
1927 XScreenNumberOfScreen)
1928 fi
1929
1930 if test "${window_system}" = "x11"; then
1931   AC_MSG_CHECKING(X11 version 6)
1932   AC_CACHE_VAL(emacs_cv_x11_version_6,
1933   [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
1934 [[#if XlibSpecificationRelease < 6
1935 fail;
1936 #endif
1937 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
1938   if test $emacs_cv_x11_version_6 = yes; then
1939     AC_MSG_RESULT(6 or newer)
1940     AC_DEFINE(HAVE_X11R6, 1,
1941               [Define to 1 if you have the X11R6 or newer version of Xlib.])
1942     AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
1943     ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
1944     ## XIM support.
1945     case "$opsys" in
1946       sol2-*) : ;;
1947       *) AC_DEFINE(HAVE_X11R6_XIM, 1,
1948            [Define if you have usable X11R6-style XIM support.])
1949          ;;
1950     esac
1951   else
1952     AC_MSG_RESULT(before 6)
1953   fi
1954 fi
1955
1956
1957 ### Use -lrsvg-2 if available, unless `--with-rsvg=no' is specified.
1958 HAVE_RSVG=no
1959 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes"; then
1960   if test "${with_rsvg}" != "no"; then
1961     RSVG_REQUIRED=2.11.0
1962     RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
1963
1964     PKG_CHECK_MODULES(RSVG, $RSVG_MODULE, HAVE_RSVG=yes, :)
1965     AC_SUBST(RSVG_CFLAGS)
1966     AC_SUBST(RSVG_LIBS)
1967
1968     if test $HAVE_RSVG = yes; then
1969       AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
1970       CFLAGS="$CFLAGS $RSVG_CFLAGS"
1971       LIBS="$RSVG_LIBS $LIBS"
1972     fi
1973   fi
1974 fi
1975
1976 HAVE_IMAGEMAGICK=no
1977 if test "${HAVE_X11}" = "yes"; then
1978   if test "${with_imagemagick}" != "no"; then
1979     ## 6.2.8 is the earliest version known to work, but earlier versions
1980     ## might work - let us know if you find one.
1981     ## 6.0.7 does not work.  See bug#7955.
1982     IMAGEMAGICK_MODULE="Wand >= 6.2.8"
1983     PKG_CHECK_MODULES(IMAGEMAGICK, $IMAGEMAGICK_MODULE, HAVE_IMAGEMAGICK=yes, :)
1984     AC_SUBST(IMAGEMAGICK_CFLAGS)
1985     AC_SUBST(IMAGEMAGICK_LIBS)
1986
1987     if test $HAVE_IMAGEMAGICK = yes; then
1988       AC_DEFINE(HAVE_IMAGEMAGICK, 1, [Define to 1 if using imagemagick.])
1989       CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
1990       LIBS="$IMAGEMAGICK_LIBS $LIBS"
1991       AC_CHECK_FUNCS(MagickExportImagePixels MagickMergeImageLayers)
1992     fi
1993   fi
1994 fi
1995
1996
1997 HAVE_GTK=no
1998 GTK_OBJ=
1999 check_gtk2=no
2000 gtk3_pkg_errors=
2001 if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2002   GLIB_REQUIRED=2.28
2003   GTK_REQUIRED=3.0
2004   GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2005
2006   dnl Checks for libraries.
2007   PKG_CHECK_MODULES(GTK, $GTK_MODULES, pkg_check_gtk=yes, pkg_check_gtk=no)
2008   if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2009      AC_MSG_ERROR($GTK_PKG_ERRORS)
2010   fi
2011   if test "$pkg_check_gtk" = "yes"; then
2012      AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2013      GTK_OBJ=emacsgtkfixed.o
2014      term_header=gtkutil.h
2015      USE_GTK_TOOLKIT="GTK3"
2016      if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2017          GTK_CFLAGS="$GTK_CFLAGS -DGDK_DISABLE_DEPRECATION_WARNINGS"
2018      fi
2019   else
2020      check_gtk2=yes
2021      gtk3_pkg_errors="$GTK_PKG_ERRORS "
2022   fi
2023 fi
2024
2025 if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2026   GLIB_REQUIRED=2.10
2027   GTK_REQUIRED=2.10
2028   GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2029
2030   dnl Checks for libraries.
2031   PKG_CHECK_MODULES(GTK, $GTK_MODULES, pkg_check_gtk=yes, pkg_check_gtk=no)
2032   if test "$pkg_check_gtk" = "no" &&
2033      { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2034   then
2035     AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2036   fi
2037   test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2038 fi
2039
2040 if test x"$pkg_check_gtk" = xyes; then
2041
2042   AC_SUBST(GTK_CFLAGS)
2043   AC_SUBST(GTK_LIBS)
2044   C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2045   CFLAGS="$CFLAGS $GTK_CFLAGS"
2046   LIBS="$GTK_LIBS $LIBS"
2047   dnl Try to compile a simple GTK program.
2048   GTK_COMPILES=no
2049   AC_CHECK_FUNCS(gtk_main, GTK_COMPILES=yes)
2050   if test "${GTK_COMPILES}" != "yes"; then
2051     if test "$USE_X_TOOLKIT" != "maybe"; then
2052       AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log.  Maybe some x11-devel files missing?]);
2053     fi
2054   else
2055     HAVE_GTK=yes
2056     AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2057     GTK_OBJ="gtkutil.o $GTK_OBJ"
2058     USE_X_TOOLKIT=none
2059     if "$PKG_CONFIG" --atleast-version=2.10 gtk+-2.0; then
2060       :
2061     else
2062       AC_MSG_WARN([[Your version of Gtk+ will have problems with
2063        closing open displays.  This is no problem if you just use
2064        one display, but if you use more than one and close one of them
2065        Emacs may crash.]])
2066       sleep 3
2067     fi
2068   fi
2069
2070 fi
2071 AC_SUBST(GTK_OBJ)
2072
2073
2074 if test "${HAVE_GTK}" = "yes"; then
2075
2076   dnl  GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2077   dnl  a lot if #ifdef:s, say we have toolkit scrollbars.
2078   if test "$with_toolkit_scroll_bars" != no; then
2079     with_toolkit_scroll_bars=yes
2080   fi
2081
2082   dnl  Check if we have the old file selection dialog declared and
2083   dnl  in the link library.  In 2.x it may be in the library,
2084   dnl  but not declared if deprecated featured has been selected out.
2085   dnl  AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2086   HAVE_GTK_FILE_SELECTION=no
2087   AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2088                    HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2089 #include <gtk/gtk.h>])
2090   if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2091     AC_CHECK_FUNCS(gtk_file_selection_new)
2092   fi
2093
2094   dnl Same as above for gtk_handle_box.
2095   HAVE_GTK_HANDLE_BOX=no
2096   AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2097                    HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2098 #include <gtk/gtk.h>])
2099   if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2100     AC_CHECK_FUNCS(gtk_handle_box_new)
2101   fi
2102
2103   dnl Same as above for gtk_tearoff_menu_item.
2104   HAVE_GTK_TEAROFF_MENU_ITEM=no
2105   AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2106                    HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2107 #include <gtk/gtk.h>])
2108   if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2109     AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2110   fi
2111
2112   dnl Check for functions introduced in 2.14 and later.
2113   AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2114                  gtk_dialog_get_action_area gtk_widget_get_sensitive \
2115                  gtk_widget_get_mapped gtk_adjustment_get_page_size \
2116                  gtk_orientable_set_orientation \
2117                  gtk_window_set_has_resize_grip)
2118
2119  term_header=gtkutil.h
2120 fi
2121
2122 dnl D-Bus has been tested under GNU/Linux only.  Must be adapted for
2123 dnl other platforms.
2124 HAVE_DBUS=no
2125 DBUS_OBJ=
2126 if test "${with_dbus}" = "yes"; then
2127    PKG_CHECK_MODULES(DBUS, dbus-1 >= 1.0, HAVE_DBUS=yes, HAVE_DBUS=no)
2128    if test "$HAVE_DBUS" = yes; then
2129      LIBS="$LIBS $DBUS_LIBS"
2130      AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2131      dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2132      dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2133      dnl D-Bus 1.5.12.
2134      AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2135                     dbus_type_is_valid \
2136                     dbus_validate_bus_name \
2137                     dbus_validate_path \
2138                     dbus_validate_interface \
2139                     dbus_validate_member)
2140      DBUS_OBJ=dbusbind.o
2141    fi
2142 fi
2143 AC_SUBST(DBUS_OBJ)
2144
2145 dnl GSettings has been tested under GNU/Linux only.
2146 HAVE_GSETTINGS=no
2147 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2148    PKG_CHECK_MODULES(GSETTINGS, gio-2.0 >= 2.26, HAVE_GSETTINGS=yes, HAVE_GSETTINGS=no)
2149    if test "$HAVE_GSETTINGS" = "yes"; then
2150       AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2151       SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2152       SETTINGS_LIBS="$GSETTINGS_LIBS"
2153    fi
2154 fi
2155
2156 dnl GConf has been tested under GNU/Linux only.
2157 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2158 HAVE_GCONF=no
2159 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" = "yes"; then
2160    PKG_CHECK_MODULES(GCONF, gconf-2.0 >= 2.13, HAVE_GCONF=yes, HAVE_GCONF=no)
2161    if test "$HAVE_GCONF" = yes; then
2162       AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2163       dnl Newer GConf doesn't link with g_objects, so this is not defined.
2164       SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2165       SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2166    fi
2167 fi
2168
2169 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2170     PKG_CHECK_MODULES(GOBJECT, gobject-2.0 >= 2.0, HAVE_GOBJECT=yes, HAVE_GOBJECT=no)
2171     if test "$HAVE_GOBJECT" = "yes"; then
2172        SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2173        SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2174     fi
2175     SAVE_CFLAGS="$CFLAGS"
2176     SAVE_LIBS="$LIBS"
2177     CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2178     LIBS="$SETTINGS_LIBS $LIBS"
2179     AC_CHECK_FUNCS([g_type_init])
2180     CFLAGS="$SAVE_CFLAGS"
2181     LIBS="$SAVE_LIBS"
2182 fi
2183 AC_SUBST(SETTINGS_CFLAGS)
2184 AC_SUBST(SETTINGS_LIBS)
2185
2186
2187 dnl SELinux is available for GNU/Linux only.
2188 HAVE_LIBSELINUX=no
2189 LIBSELINUX_LIBS=
2190 if test "${with_selinux}" = "yes"; then
2191    AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2192    if test "$HAVE_LIBSELINUX" = yes; then
2193       AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2194       LIBSELINUX_LIBS=-lselinux
2195    fi
2196 fi
2197 AC_SUBST(LIBSELINUX_LIBS)
2198
2199 HAVE_GNUTLS=no
2200 HAVE_GNUTLS_CALLBACK_CERTIFICATE_VERIFY=no
2201 if test "${with_gnutls}" = "yes" ; then
2202   PKG_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.6.6], HAVE_GNUTLS=yes, HAVE_GNUTLS=no)
2203   if test "${HAVE_GNUTLS}" = "yes"; then
2204     AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2205   fi
2206
2207   CFLAGS="$CFLAGS $LIBGNUTLS_CFLAGS"
2208   LIBS="$LIBGNUTLS_LIBS $LIBS"
2209   AC_CHECK_FUNCS(gnutls_certificate_set_verify_function, HAVE_GNUTLS_CALLBACK_CERTIFICATE_VERIFY=yes)
2210
2211   if test "${HAVE_GNUTLS_CALLBACK_CERTIFICATE_VERIFY}" = "yes"; then
2212     AC_DEFINE(HAVE_GNUTLS_CALLBACK_CERTIFICATE_VERIFY, 1, [Define if using GnuTLS certificate verification callbacks.])
2213   fi
2214 fi
2215
2216 AC_SUBST(LIBGNUTLS_LIBS)
2217 AC_SUBST(LIBGNUTLS_CFLAGS)
2218
2219 dnl inotify is only available on GNU/Linux.
2220 if test "${with_inotify}" = "yes"; then
2221    AC_CHECK_HEADERS(sys/inotify.h)
2222    if test "$ac_cv_header_sys_inotify_h" = yes ; then
2223      AC_CHECK_FUNC(inotify_init1)
2224    fi
2225 fi
2226 if test "$ac_cv_func_inotify_init1" = yes; then
2227   AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2228 fi
2229
2230 dnl POSIX ACL support: provided by libacl on GNU/Linux, by libc on FreeBSD.
2231 HAVE_POSIX_ACL=no
2232 LIBACL_LIBS=
2233 if test "${with_acl}" = "yes"; then
2234   AC_CHECK_LIB([acl], [acl_set_file], HAVE_POSIX_ACL=yes, HAVE_POSIX_ACL=no)
2235   if test "$HAVE_POSIX_ACL" = yes; then
2236     AC_DEFINE(HAVE_POSIX_ACL, 1, [Define to 1 if using POSIX ACL support.])
2237     LIBACL_LIBS=-lacl
2238   else
2239     AC_CHECK_FUNC(acl_set_file, HAVE_POSIX_ACL=yes, HAVE_POSIX_ACL=no)
2240     if test "$HAVE_POSIX_ACL" = yes; then
2241       AC_DEFINE(HAVE_POSIX_ACL, 1, [Define to 1 if using POSIX ACL support.])
2242     fi
2243  fi
2244 fi
2245 AC_SUBST(LIBACL_LIBS)
2246
2247 dnl Do not put whitespace before the #include statements below.
2248 dnl Older compilers (eg sunos4 cc) choke on it.
2249 HAVE_XAW3D=no
2250 LUCID_LIBW=
2251 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
2252   if test "$with_xaw3d" != no; then
2253     AC_CACHE_VAL(emacs_cv_xaw3d,
2254     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2255 #include <X11/Intrinsic.h>
2256 #include <X11/Xaw3d/Simple.h>]],
2257       [[]])],
2258       [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
2259                     emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
2260       emacs_cv_xaw3d=no)])
2261   else
2262     emacs_cv_xaw3d=no
2263   fi
2264   if test $emacs_cv_xaw3d = yes; then
2265     AC_MSG_CHECKING(for xaw3d)
2266     AC_MSG_RESULT([yes; using Lucid toolkit])
2267     USE_X_TOOLKIT=LUCID
2268     HAVE_XAW3D=yes
2269     LUCID_LIBW=-lXaw3d
2270     AC_DEFINE(HAVE_XAW3D, 1,
2271               [Define to 1 if you have the Xaw3d library (-lXaw3d).])
2272   else
2273     AC_MSG_CHECKING(for xaw3d)
2274     AC_MSG_RESULT(no)
2275     AC_MSG_CHECKING(for libXaw)
2276     AC_CACHE_VAL(emacs_cv_xaw,
2277     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2278 #include <X11/Intrinsic.h>
2279 #include <X11/Xaw/Simple.h>]],
2280       [[]])],
2281       emacs_cv_xaw=yes,
2282       emacs_cv_xaw=no)])
2283     if test $emacs_cv_xaw = yes; then
2284       AC_MSG_RESULT([yes; using Lucid toolkit])
2285       USE_X_TOOLKIT=LUCID
2286       LUCID_LIBW=-lXaw
2287     elif test x"${USE_X_TOOLKIT}" = xLUCID; then
2288       AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
2289     else
2290       AC_MSG_ERROR([No X toolkit could be found.
2291 If you are sure you want Emacs compiled without an X toolkit, pass
2292   --with-x-toolkit=no
2293 to configure.  Otherwise, install the development libraries for the toolkit
2294 that you want to use (e.g. Gtk+) and re-run configure.])
2295     fi
2296   fi
2297 fi
2298
2299 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
2300
2301 LIBXTR6=
2302 if test "${USE_X_TOOLKIT}" != "none"; then
2303   AC_MSG_CHECKING(X11 toolkit version)
2304   AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
2305   [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
2306 [[#if XtSpecificationRelease < 6
2307 fail;
2308 #endif
2309 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
2310   HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
2311   if test $emacs_cv_x11_toolkit_version_6 = yes; then
2312     AC_MSG_RESULT(6 or newer)
2313     AC_DEFINE(HAVE_X11XTR6, 1,
2314               [Define to 1 if you have the X11R6 or newer version of Xt.])
2315     LIBXTR6="-lSM -lICE"
2316     case "$opsys" in
2317       ## Use libw.a along with X11R6 Xt.
2318       unixware) LIBXTR6="$LIBXTR6 -lw" ;;
2319     esac
2320   else
2321     AC_MSG_RESULT(before 6)
2322   fi
2323
2324 dnl If using toolkit, check whether libXmu.a exists.
2325 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
2326   OLDLIBS="$LIBS"
2327   if test x$HAVE_X11XTR6 = xyes; then
2328     LIBS="-lXt -lSM -lICE $LIBS"
2329   else
2330     LIBS="-lXt $LIBS"
2331   fi
2332   AC_CHECK_LIB(Xmu, XmuConvertStandardSelection)
2333   test $ac_cv_lib_Xmu_XmuConvertStandardSelection = no && LIBS="$OLDLIBS"
2334   dnl ac_cv_lib_Xmu_XmuConvertStandardSelection is also referenced below.
2335 fi
2336 AC_SUBST(LIBXTR6)
2337
2338 dnl FIXME the logic here seems weird, but this is what cpp was doing.
2339 dnl Why not just test for libxmu in the normal way?
2340 LIBXMU=-lXmu
2341 case $opsys in
2342   ## These systems don't supply Xmu.
2343   hpux* | aix4-2 )
2344     test "X$ac_cv_lib_Xmu_XmuConvertStandardSelection" != "Xyes" && LIBXMU=
2345     ;;
2346 esac
2347 AC_SUBST(LIBXMU)
2348
2349 # On Irix 6.5, at least, we need XShapeQueryExtension from -lXext for Xaw3D.
2350 if test "${HAVE_X11}" = "yes"; then
2351   if test "${USE_X_TOOLKIT}" != "none"; then
2352     AC_CHECK_LIB(Xext, XShapeQueryExtension)
2353   fi
2354 fi
2355
2356 LIBXP=
2357 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
2358   # OpenMotif may be installed in such a way on some GNU/Linux systems.
2359   if test -d /usr/include/openmotif; then
2360     CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
2361     emacs_cv_openmotif=yes
2362     case "$canonical" in
2363       x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
2364       test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
2365       ;;
2366       *)
2367       test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
2368     esac
2369   else
2370     emacs_cv_openmotif=no
2371   fi
2372   AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
2373   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
2374     [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
2375 int x = 5;
2376 #else
2377 Motif version prior to 2.1.
2378 #endif]])],
2379     emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
2380   if test $emacs_cv_motif_version_2_1 = yes; then
2381     AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
2382     if test x$emacs_cv_openmotif = xyes; then
2383       REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
2384     fi
2385   else
2386     AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
2387     # We put this in CFLAGS temporarily to precede other -I options
2388     # that might be in CFLAGS temporarily.
2389     # We put this in CPPFLAGS where it precedes the other -I options.
2390     OLD_CPPFLAGS=$CPPFLAGS
2391     OLD_CFLAGS=$CFLAGS
2392     CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
2393     CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
2394     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
2395       [[int x = 5;]])],
2396       emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
2397     if test $emacs_cv_lesstif = yes; then
2398       # Make sure this -I option remains in CPPFLAGS after it is set
2399       # back to REAL_CPPFLAGS.
2400       # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
2401       # have those other -I options anyway.  Ultimately, having this
2402       # directory ultimately in CPPFLAGS will be enough.
2403       REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
2404       LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
2405     else
2406       CFLAGS=$OLD_CFLAGS
2407       CPPFLAGS=$OLD_CPPFLAGS
2408     fi
2409   fi
2410   AC_CHECK_HEADER([Xm/BulletinB.h], [],
2411     [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
2412 fi
2413
2414 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
2415 dnl using Motif or Xaw3d is available, and unless
2416 dnl --with-toolkit-scroll-bars=no was specified.
2417
2418 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
2419             [Define to 1 if we should use toolkit scroll bars.])dnl
2420 USE_TOOLKIT_SCROLL_BARS=no
2421 if test "${with_toolkit_scroll_bars}" != "no"; then
2422   if test "${USE_X_TOOLKIT}" != "none"; then
2423     if test "${USE_X_TOOLKIT}" = "MOTIF"; then
2424       AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2425       HAVE_XAW3D=no
2426       USE_TOOLKIT_SCROLL_BARS=yes
2427     elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
2428       AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2429       USE_TOOLKIT_SCROLL_BARS=yes
2430     fi
2431   elif test "${HAVE_GTK}" = "yes"; then
2432     AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2433     USE_TOOLKIT_SCROLL_BARS=yes
2434   elif test "${HAVE_NS}" = "yes"; then
2435     AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2436     USE_TOOLKIT_SCROLL_BARS=yes
2437   elif test "${HAVE_W32}" = "yes"; then
2438     AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
2439     USE_TOOLKIT_SCROLL_BARS=yes
2440   fi
2441 fi
2442
2443 dnl See if XIM is available.
2444 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2445           #include <X11/Xlib.h>
2446           #include <X11/Xresource.h>]],
2447          [[XIMProc  callback;]])],
2448          [HAVE_XIM=yes
2449          AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
2450          HAVE_XIM=no)
2451
2452 dnl `--with-xim' now controls only the initial value of use_xim at run time.
2453
2454 if test "${with_xim}" != "no"; then
2455   AC_DEFINE(USE_XIM, 1,
2456             [Define to 1 if we should use XIM, if it is available.])
2457 fi
2458
2459
2460 if test "${HAVE_XIM}" != "no"; then
2461   late_CFLAGS=$CFLAGS
2462   if test "$GCC" = yes; then
2463     CFLAGS="$CFLAGS --pedantic-errors"
2464   fi
2465   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2466 #include <X11/Xlib.h>
2467 #include <X11/Xresource.h>]],
2468 [[Display *display;
2469 XrmDatabase db;
2470 char *res_name;
2471 char *res_class;
2472 XIMProc  callback;
2473 XPointer *client_data;
2474 #ifndef __GNUC__
2475 /* If we're not using GCC, it's probably not XFree86, and this is
2476    probably right, but we can't use something like --pedantic-errors.  */
2477 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
2478                                            char*, XIMProc, XPointer*);
2479 #endif
2480 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
2481    client_data);]])],
2482     [emacs_cv_arg6_star=yes])
2483   AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
2484          [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
2485 either XPointer or XPointer*.])dnl
2486   if test "$emacs_cv_arg6_star" = yes; then
2487     AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
2488   else
2489     AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
2490   fi
2491   CFLAGS=$late_CFLAGS
2492 fi
2493
2494 ### Start of font-backend (under any platform) section.
2495 # (nothing here yet -- this is a placeholder)
2496 ### End of font-backend (under any platform) section.
2497
2498 ### Start of font-backend (under X11) section.
2499 if test "${HAVE_X11}" = "yes"; then
2500    PKG_CHECK_MODULES(FONTCONFIG, fontconfig >= 2.2.0, HAVE_FC=yes, HAVE_FC=no)
2501
2502    ## Use -lXft if available, unless `--with-xft=no'.
2503    HAVE_XFT=maybe
2504     if test "${HAVE_FC}" = "no" || test "x${with_x}" = "xno"; then
2505       with_xft="no";
2506     fi
2507     if test "x${with_xft}" != "xno"; then
2508
2509       PKG_CHECK_MODULES(XFT, xft >= 0.13.0, , HAVE_XFT=no)
2510       ## Because xftfont.c uses XRenderQueryExtension, we also
2511       ## need to link to -lXrender.
2512       HAVE_XRENDER=no
2513       AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
2514       if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
2515         OLD_CPPFLAGS="$CPPFLAGS"
2516         OLD_CFLAGS="$CFLAGS"
2517         OLD_LIBS="$LIBS"
2518         CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
2519         CFLAGS="$CFLAGS $XFT_CFLAGS"
2520         XFT_LIBS="-lXrender $XFT_LIBS"
2521         LIBS="$XFT_LIBS $LIBS"
2522         AC_CHECK_HEADER(X11/Xft/Xft.h,
2523           AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS))
2524
2525         if test "${HAVE_XFT}" = "yes"; then
2526           AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
2527             AC_SUBST(XFT_LIBS)
2528           C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
2529         else
2530           CPPFLAGS="$OLD_CPPFLAGS"
2531           CFLAGS="$OLD_CFLAGS"
2532           LIBS="$OLD_LIBS"
2533         fi                        # "${HAVE_XFT}" = "yes"
2534       fi                          # "$HAVE_XFT" != no
2535     fi                            # "x${with_xft}" != "xno"
2536
2537     ## We used to allow building with FreeType and without Xft.
2538     ## However, the ftx font backend driver is not in good shape.
2539     if test "$HAVE_XFT" != "yes"; then
2540        dnl For the "Does Emacs use" message at the end.
2541        HAVE_XFT=no
2542        HAVE_FREETYPE=no
2543     else
2544        dnl Strict linkers fail with
2545        dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
2546        dnl if -lfreetype is not specified.
2547        dnl The following is needed to set FREETYPE_LIBS.
2548        PKG_CHECK_MODULES(FREETYPE, freetype2, HAVE_FREETYPE=yes,
2549                          HAVE_FREETYPE=no)
2550
2551        test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
2552     fi
2553
2554     HAVE_LIBOTF=no
2555     if test "${HAVE_FREETYPE}" = "yes"; then
2556       AC_DEFINE(HAVE_FREETYPE, 1,
2557                 [Define to 1 if using the freetype and fontconfig libraries.])
2558       if test "${with_libotf}" != "no"; then
2559         PKG_CHECK_MODULES(LIBOTF, libotf, HAVE_LIBOTF=yes,
2560                           HAVE_LIBOTF=no)
2561         if test "$HAVE_LIBOTF" = "yes"; then
2562           AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
2563           AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
2564                        HAVE_OTF_GET_VARIATION_GLYPHS=yes,
2565                        HAVE_OTF_GET_VARIATION_GLYPHS=no)
2566           if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
2567             AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
2568                       [Define to 1 if libotf has OTF_get_variation_glyphs.])
2569           fi
2570         fi
2571       fi
2572     dnl FIXME should there be an error if HAVE_FREETYPE != yes?
2573     dnl Does the new font backend require it, or can it work without it?
2574     fi
2575
2576     HAVE_M17N_FLT=no
2577     if test "${HAVE_LIBOTF}" = yes; then
2578       if test "${with_m17n_flt}" != "no"; then
2579         PKG_CHECK_MODULES(M17N_FLT, m17n-flt, HAVE_M17N_FLT=yes, HAVE_M17N_FLT=no)
2580         if test "$HAVE_M17N_FLT" = "yes"; then
2581           AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
2582         fi
2583       fi
2584     fi
2585 else
2586     HAVE_XFT=no
2587     HAVE_FREETYPE=no
2588     HAVE_LIBOTF=no
2589     HAVE_M17N_FLT=no
2590 fi
2591
2592 ### End of font-backend (under X11) section.
2593
2594 AC_SUBST(FREETYPE_CFLAGS)
2595 AC_SUBST(FREETYPE_LIBS)
2596 AC_SUBST(FONTCONFIG_CFLAGS)
2597 AC_SUBST(FONTCONFIG_LIBS)
2598 AC_SUBST(LIBOTF_CFLAGS)
2599 AC_SUBST(LIBOTF_LIBS)
2600 AC_SUBST(M17N_FLT_CFLAGS)
2601 AC_SUBST(M17N_FLT_LIBS)
2602
2603 ### Use -lXpm if available, unless `--with-xpm=no'.
2604 HAVE_XPM=no
2605 LIBXPM=
2606
2607 if test "${HAVE_W32}" = "yes"; then
2608   if test "${with_xpm}" != "no"; then
2609     SAVE_CPPFLAGS="$CPPFLAGS"
2610     SAVE_LDFLAGS="$LDFLAGS"
2611     CPPFLAGS="$CPPFLAGS -I/usr/include/noX"
2612     LDFLAGS="$LDFLAGS -L/usr/lib/noX"
2613     AC_CHECK_HEADER(X11/xpm.h,
2614       [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
2615     if test "${HAVE_XPM}" = "yes"; then
2616       AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
2617       AC_EGREP_CPP(no_return_alloc_pixels,
2618       [#include "X11/xpm.h"
2619 #ifndef XpmReturnAllocPixels
2620 no_return_alloc_pixels
2621 #endif
2622       ], HAVE_XPM=no, HAVE_XPM=yes)
2623
2624       if test "${HAVE_XPM}" = "yes"; then
2625         REAL_CPPFLAGS="$REAL_CPPFLAGS -I/usr/include/noX"
2626         AC_MSG_RESULT(yes)
2627       else
2628         AC_MSG_RESULT(no)
2629         CPPFLAGS="$SAVE_CPPFLAGS"
2630         LDFLAGS="$SAVE_LDFLAGS"
2631       fi
2632     fi
2633   fi
2634
2635   if test "${HAVE_XPM}" = "yes"; then
2636     AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
2637     LIBXPM=-lXpm
2638   fi
2639 fi
2640
2641 if test "${HAVE_X11}" = "yes"; then
2642   if test "${with_xpm}" != "no"; then
2643     AC_CHECK_HEADER(X11/xpm.h,
2644       [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
2645     if test "${HAVE_XPM}" = "yes"; then
2646       AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
2647       AC_EGREP_CPP(no_return_alloc_pixels,
2648       [#include "X11/xpm.h"
2649 #ifndef XpmReturnAllocPixels
2650 no_return_alloc_pixels
2651 #endif
2652       ], HAVE_XPM=no, HAVE_XPM=yes)
2653
2654       if test "${HAVE_XPM}" = "yes"; then
2655         AC_MSG_RESULT(yes)
2656       else
2657         AC_MSG_RESULT(no)
2658       fi
2659     fi
2660   fi
2661
2662   if test "${HAVE_XPM}" = "yes"; then
2663     AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
2664     LIBXPM=-lXpm
2665   fi
2666 fi
2667
2668 AC_SUBST(LIBXPM)
2669
2670 ### Use -ljpeg if available, unless `--with-jpeg=no'.
2671 HAVE_JPEG=no
2672 LIBJPEG=
2673 if test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
2674   if test "${with_jpeg}" != "no"; then
2675     dnl Checking for jpeglib.h can lose because of a redefinition of
2676     dnl  HAVE_STDLIB_H.
2677     AC_CHECK_HEADER(jerror.h,
2678       [AC_CHECK_LIB(jpeg, jpeg_destroy_compress, HAVE_JPEG=yes)])
2679   fi
2680
2681   AH_TEMPLATE(HAVE_JPEG, [Define to 1 if you have the jpeg library (-ljpeg).])dnl
2682   if test "${HAVE_JPEG}" = "yes"; then
2683     AC_DEFINE(HAVE_JPEG)
2684     AC_EGREP_CPP([version= *(6[2-9]|[7-9][0-9])],
2685         [#include <jpeglib.h>
2686          version=JPEG_LIB_VERSION
2687 ],
2688         [AC_DEFINE(HAVE_JPEG)],
2689         [AC_MSG_WARN([libjpeg found, but not version 6b or later])
2690         HAVE_JPEG=no])
2691   fi
2692   if test "${HAVE_JPEG}" = "yes"; then
2693     LIBJPEG=-ljpeg
2694   fi
2695 fi
2696 AC_SUBST(LIBJPEG)
2697
2698 ### Use -lpng if available, unless `--with-png=no'.
2699 HAVE_PNG=no
2700 LIBPNG=
2701 if test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
2702   if test "${with_png}" != "no"; then
2703     # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
2704     # in /usr/include/libpng.
2705     AC_CHECK_HEADERS(png.h libpng/png.h, break)
2706     if test "$ac_cv_header_png_h" = yes || test "$ac_cv_header_libpng_png_h" = yes ; then
2707       AC_CHECK_LIB(png, png_get_channels, HAVE_PNG=yes, , -lz -lm)
2708     fi
2709   fi
2710
2711   if test "${HAVE_PNG}" = "yes"; then
2712     AC_DEFINE(HAVE_PNG, 1, [Define to 1 if you have the png library (-lpng).])
2713     LIBPNG="-lpng -lz -lm"
2714
2715     AC_CHECK_DECL(png_longjmp,
2716       [],
2717       [AC_DEFINE(PNG_DEPSTRUCT, [],
2718          [Define to empty to suppress deprecation warnings when building
2719           with --enable-gcc-warnings and with libpng versions before 1.5,
2720           which lack png_longjmp.])],
2721       [[#ifdef HAVE_LIBPNG_PNG_H
2722         # include <libpng/png.h>
2723         #else
2724         # include <png.h>
2725         #endif
2726       ]])
2727   fi
2728 fi
2729 AC_SUBST(LIBPNG)
2730
2731 ### Use -ltiff if available, unless `--with-tiff=no'.
2732 HAVE_TIFF=no
2733 LIBTIFF=
2734 if test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
2735   if test "${with_tiff}" != "no"; then
2736     AC_CHECK_HEADER(tiffio.h,
2737       [tifflibs="-lz -lm"
2738       # At least one tiff package requires the jpeg library.
2739       if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
2740       AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
2741   fi
2742
2743   if test "${HAVE_TIFF}" = "yes"; then
2744     AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
2745     dnl FIXME -lz -lm, as per libpng?
2746     LIBTIFF=-ltiff
2747   fi
2748 fi
2749 AC_SUBST(LIBTIFF)
2750
2751 ### Use -lgif or -lungif if available, unless `--with-gif=no'.
2752 HAVE_GIF=no
2753 LIBGIF=
2754 if test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
2755         || test "${HAVE_W32}" = "yes"; then
2756   AC_CHECK_HEADER(gif_lib.h,
2757 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
2758 # Earlier versions can crash Emacs.
2759     [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])
2760
2761   if test "$HAVE_GIF" = yes; then
2762     LIBGIF=-lgif
2763   elif test "$HAVE_GIF" = maybe; then
2764 # If gif_lib.h but no libgif, try libungif.
2765     AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
2766     test "$HAVE_GIF" = yes && LIBGIF=-lungif
2767   fi
2768
2769   if test "${HAVE_GIF}" = "yes"; then
2770     AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
2771   fi
2772 fi
2773 AC_SUBST(LIBGIF)
2774
2775 dnl Check for required libraries.
2776 if test "${HAVE_X11}" = "yes"; then
2777   MISSING=""
2778   WITH_NO=""
2779   test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
2780     MISSING="libXpm" && WITH_NO="--with-xpm=no"
2781   test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
2782     MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
2783   test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
2784     MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
2785   test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
2786     MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
2787   test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
2788     MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
2789
2790   if test "X${MISSING}" != X; then
2791     AC_MSG_ERROR([The following required libraries were not found:
2792     $MISSING
2793 Maybe some development libraries/packages are missing?
2794 If you don't want to link with them give
2795     $WITH_NO
2796 as options to configure])
2797   fi
2798 fi
2799
2800 ### Use -lgpm if available, unless `--with-gpm=no'.
2801 HAVE_GPM=no
2802 LIBGPM=
2803 if test "${with_gpm}" != "no"; then
2804   AC_CHECK_HEADER(gpm.h,
2805     [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
2806
2807   if test "${HAVE_GPM}" = "yes"; then
2808     AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
2809     LIBGPM=-lgpm
2810   fi
2811 fi
2812 AC_SUBST(LIBGPM)
2813
2814 dnl Check for malloc/malloc.h on darwin
2815 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
2816
2817 GNUSTEP_CFLAGS=
2818 ### Use NeXTstep API to implement GUI.
2819 if test "${HAVE_NS}" = "yes"; then
2820   AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on Mac OS X.])
2821   if test "${NS_IMPL_COCOA}" = "yes"; then
2822     AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under MacOS X.])
2823   fi
2824   if test "${NS_IMPL_GNUSTEP}" = "yes"; then
2825     AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
2826     # See also .m.o rule in Makefile.in */
2827     # FIXME: are all these flags really needed?  Document here why.  */
2828     GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
2829     ## Extra CFLAGS applied to src/*.m files.
2830     GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
2831   fi
2832   # We also have mouse menus.
2833   HAVE_MENUS=yes
2834   OTHER_FILES=ns-app
2835 fi
2836
2837 if test "${HAVE_W32}" = "yes"; then
2838   HAVE_MENUS=yes
2839 fi
2840
2841 ### Use session management (-lSM -lICE) if available
2842 HAVE_X_SM=no
2843 LIBXSM=
2844 if test "${HAVE_X11}" = "yes"; then
2845   AC_CHECK_HEADER(X11/SM/SMlib.h,
2846     [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
2847
2848   if test "${HAVE_X_SM}" = "yes"; then
2849     AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
2850     LIBXSM="-lSM -lICE"
2851     case "$LIBS" in
2852       *-lSM*) ;;
2853       *)      LIBS="$LIBXSM $LIBS" ;;
2854     esac
2855   fi
2856 fi
2857 AC_SUBST(LIBXSM)
2858
2859 ### Use libxml (-lxml2) if available
2860 HAVE_LIBXML2=no
2861 if test "${with_xml2}" != "no"; then
2862   ### I'm not sure what the version number should be, so I just guessed.
2863   PKG_CHECK_MODULES(LIBXML2, libxml-2.0 > 2.6.17, HAVE_LIBXML2=yes, HAVE_LIBXML2=no)
2864   if test "${HAVE_LIBXML2}" = "yes"; then
2865     LIBS="$LIBXML2_LIBS $LIBS"
2866     AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no)
2867     if test "${HAVE_LIBXML2}" = "yes"; then
2868       AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
2869     else
2870       LIBXML2_LIBS=""
2871       LIBXML2_CFLAGS=""
2872     fi
2873   fi
2874 fi
2875 AC_SUBST(LIBXML2_LIBS)
2876 AC_SUBST(LIBXML2_CFLAGS)
2877
2878 # If netdb.h doesn't declare h_errno, we must declare it by hand.
2879 AC_CACHE_CHECK(whether netdb declares h_errno,
2880                emacs_cv_netdb_declares_h_errno,
2881 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netdb.h>]],
2882   [[return h_errno;]])],
2883   emacs_cv_netdb_declares_h_errno=yes, emacs_cv_netdb_declares_h_errno=no)])
2884 if test $emacs_cv_netdb_declares_h_errno = yes; then
2885   AC_DEFINE(HAVE_H_ERRNO, 1, [Define to 1 if netdb.h declares h_errno.])
2886 fi
2887
2888 # sqrt and other floating-point functions such as fmod and frexp
2889 # are found in -lm on most systems.
2890 AC_CHECK_LIB(m, sqrt)
2891
2892 # Check for mail-locking functions in a "mail" library.  Probably this should
2893 # have the same check as for liblockfile below.
2894 AC_CHECK_LIB(mail, maillock, have_mail=yes, have_mail=no)
2895 if test $have_mail = yes; then
2896   LIBS_MAIL=-lmail
2897   LIBS="$LIBS_MAIL $LIBS"
2898   AC_DEFINE(HAVE_LIBMAIL, 1, [Define to 1 if you have the `mail' library (-lmail).])
2899 else
2900   LIBS_MAIL=
2901 fi
2902 dnl Debian, at least:
2903 AC_CHECK_LIB(lockfile, maillock, have_lockfile=yes, have_lockfile=no)
2904 if test $have_lockfile = yes; then
2905    LIBS_MAIL=-llockfile
2906    LIBS="$LIBS_MAIL $LIBS"
2907    AC_DEFINE(HAVE_LIBLOCKFILE, 1, [Define to 1 if you have the `lockfile' library (-llockfile).])
2908 else
2909 # If we have the shared liblockfile, assume we must use it for mail
2910 # locking (e.g. Debian).  If we couldn't link against liblockfile
2911 # (no liblockfile.a installed), ensure that we don't need to.
2912   dnl This works for files generally, not just executables.
2913   dnl Should we look elsewhere for it?  Maybe examine /etc/ld.so.conf?
2914   AC_CHECK_PROG(liblockfile, liblockfile.so, yes, no,
2915                 /usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH)
2916   if test $ac_cv_prog_liblockfile = yes; then
2917     AC_MSG_ERROR([Shared liblockfile found but can't link against it.
2918 This probably means that movemail could lose mail.
2919 There may be a `development' package to install containing liblockfile.])
2920   fi
2921 fi
2922 AC_CHECK_HEADERS_ONCE(maillock.h)
2923 AC_SUBST(LIBS_MAIL)
2924
2925 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
2926 ## interlock access to the mail spool.  The alternative is a lock file named
2927 ## /usr/spool/mail/$USER.lock.
2928 mail_lock=no
2929 case "$opsys" in
2930   aix4-2) mail_lock="lockf" ;;
2931
2932   gnu|freebsd|netbsd|openbsd|darwin|irix6-5) mail_lock="flock" ;;
2933
2934   ## On GNU/Linux systems, both methods are used by various mail programs.
2935   ## I assume most people are using newer mailers that have heard of flock.
2936   ## Change this if you need to.
2937   ## Debian contains a patch which says: ``On Debian/GNU/Linux systems,
2938   ## configure gets the right answers, and that means *NOT* using flock.
2939   ## Using flock is guaranteed to be the wrong thing. See Debian Policy
2940   ## for details.'' and then uses `#ifdef DEBIAN'.  Unfortunately the
2941   ## Debian maintainer hasn't provided a clean fix for Emacs.
2942   ## movemail.c will use `maillock' when MAILDIR, HAVE_LIBMAIL and
2943   ## HAVE_MAILLOCK_H are defined, so the following appears to be the
2944   ## correct logic.  -- fx
2945   ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
2946   ## liblockfile is a Free Software replacement for libmail, used on
2947   ## Debian systems and elsewhere. -rfr.
2948   gnu-*)
2949     mail_lock="flock"
2950     if test $have_mail = yes || test $have_lockfile = yes; then
2951       test $ac_cv_header_maillock_h = yes && mail_lock=no
2952     fi
2953     ;;
2954 esac
2955
2956 BLESSMAIL_TARGET=
2957 case "$mail_lock" in
2958   flock) AC_DEFINE(MAIL_USE_FLOCK, 1, [Define if the mailer uses flock to interlock the mail spool.]) ;;
2959
2960   lockf) AC_DEFINE(MAIL_USE_LOCKF, 1, [Define if the mailer uses lockf to interlock the mail spool.]) ;;
2961
2962   *) BLESSMAIL_TARGET="need-blessmail" ;;
2963 esac
2964 AC_SUBST(BLESSMAIL_TARGET)
2965
2966
2967 AC_CHECK_FUNCS(gethostname \
2968 getrusage get_current_dir_name \
2969 lrand48 \
2970 select getpagesize setlocale \
2971 utimes getrlimit setrlimit shutdown getaddrinfo \
2972 strsignal setitimer \
2973 sendto recvfrom getsockname getpeername getifaddrs freeifaddrs \
2974 gai_strerror mkstemp getline getdelim fsync sync \
2975 difftime posix_memalign \
2976 getpwent endpwent getgrent endgrent \
2977 touchlock \
2978 cfmakeraw cfsetspeed copysign __executable_start)
2979
2980 ## Eric Backus <ericb@lsid.hp.com> says, HP-UX 9.x on HP 700 machines
2981 ## has a broken `rint' in some library versions including math library
2982 ## version number A.09.05.
2983 ## You can fix the math library by installing patch number PHSS_4630.
2984 ## But we can fix it more reliably for Emacs by just not using rint.
2985 ## We also skip HAVE_RANDOM - see comments in src/conf_post.h.
2986 case $opsys in
2987    hpux*) : ;;
2988    *) AC_CHECK_FUNCS(random rint) ;;
2989 esac
2990
2991 dnl Cannot use AC_CHECK_FUNCS
2992 AC_CACHE_CHECK([for __builtin_unwind_init],
2993                emacs_cv_func___builtin_unwind_init,
2994 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
2995                 emacs_cv_func___builtin_unwind_init=yes,
2996                 emacs_cv_func___builtin_unwind_init=no)])
2997 if test $emacs_cv_func___builtin_unwind_init = yes; then
2998   AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
2999             [Define to 1 if you have the `__builtin_unwind_init' function.])
3000 fi
3001
3002 AC_CHECK_HEADERS_ONCE(sys/un.h)
3003
3004 AC_FUNC_FSEEKO
3005
3006 # UNIX98 PTYs.
3007 AC_CHECK_FUNCS(grantpt)
3008
3009 # PTY-related GNU extensions.
3010 AC_CHECK_FUNCS(getpt posix_openpt)
3011
3012 # Check this now, so that we will NOT find the above functions in ncurses.
3013 # That is because we have not set up to link ncurses in lib-src.
3014 # It's better to believe a function is not available
3015 # than to expect to find it in ncurses.
3016 # Also we need tputs and friends to be able to build at all.
3017 AC_MSG_CHECKING([for library containing tputs])
3018 # Run a test program that contains a call to tputs, a call that is
3019 # never executed.  This tests whether a pre-'main' dynamic linker
3020 # works with the library.  It's too much trouble to actually call
3021 # tputs in the test program, due to portability hassles.  When
3022 # cross-compiling, assume the test program will run if it links.
3023 AC_DEFUN([tputs_link_source], [
3024   AC_LANG_SOURCE(
3025      [[extern void tputs (const char *, int, int (*)(int));
3026        int main (int argc, char **argv)
3027        {
3028           if (argc == 10000)
3029             tputs (argv[0], 0, 0);
3030           return 0;
3031        }]])
3032 ])
3033 # Maybe curses should be tried earlier?
3034 # See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9736#35
3035 for tputs_library in '' tinfo ncurses terminfo termcap curses; do
3036   OLIBS=$LIBS
3037   if test -z "$tputs_library"; then
3038     LIBS_TERMCAP=
3039     msg='none required'
3040   else
3041     LIBS_TERMCAP=-l$tputs_library
3042     msg=$LIBS_TERMCAP
3043     LIBS="$LIBS_TERMCAP $LIBS"
3044   fi
3045   AC_RUN_IFELSE([tputs_link_source], [], [msg=no],
3046     [AC_LINK_IFELSE([tputs_link_source], [], [msg=no])])
3047   LIBS=$OLIBS
3048   if test "X$msg" != Xno; then
3049     break
3050   fi
3051 done
3052 AC_MSG_RESULT([$msg])
3053 if test "X$msg" = Xno; then
3054   AC_MSG_ERROR([The required function `tputs' was not found in any library.
3055 The following libraries were tried (in order):
3056   libtinfo, libncurses, libterminfo, libtermcap, libcurses
3057 Please try installing whichever of these libraries is most appropriate
3058 for your system, together with its header files.
3059 For example, a libncurses-dev(el) or similar package.])
3060 fi
3061
3062 ## Use termcap instead of terminfo?
3063 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
3064 TERMINFO=yes
3065 ## FIXME?  In the cases below where we unconditionally set
3066 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
3067 ## if that was found above to have tputs.
3068 ## Should we use the gnu* logic everywhere?
3069 case "$opsys" in
3070   ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
3071   ##  The ncurses library has been moved out of the System framework in
3072   ##  Mac OS X 10.2.  So if configure detects it, set the command-line
3073   ##  option to use it.
3074   darwin) LIBS_TERMCAP="-lncurses" ;;
3075
3076   gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
3077
3078   freebsd)
3079     AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
3080     AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
3081     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
3082 [[#if __FreeBSD_version < 400000
3083 fail;
3084 #endif
3085 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
3086
3087     AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
3088
3089     if test $emacs_cv_freebsd_terminfo = yes; then
3090       LIBS_TERMCAP="-lncurses"
3091     else
3092       TERMINFO=no
3093       LIBS_TERMCAP="-ltermcap"
3094     fi
3095     ;;
3096
3097   netbsd)
3098     if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
3099       TERMINFO=no
3100       LIBS_TERMCAP="-ltermcap"
3101     fi
3102     ;;
3103
3104   openbsd) LIBS_TERMCAP="-lncurses" ;;
3105
3106   ## hpux: Make sure we get select from libc rather than from libcurses
3107   ##  because libcurses on HPUX 10.10 has a broken version of select.
3108   ##  We used to use -lc -lcurses, but this may be cleaner.
3109   ## FIXME?  But TERMINFO = yes on hpux (it used to be explicitly
3110   # set that way, now it uses the default).  Isn't this a contradiction?
3111   hpux*) LIBS_TERMCAP="-ltermcap" ;;
3112
3113 esac
3114
3115 TERMCAP_OBJ=tparam.o
3116 if test $TERMINFO = yes; then
3117   AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
3118   TERMCAP_OBJ=terminfo.o
3119 fi
3120 AC_SUBST(LIBS_TERMCAP)
3121 AC_SUBST(TERMCAP_OBJ)
3122
3123
3124 # Do we have res_init, for detecting changes in /etc/resolv.conf?
3125 # On Darwin, res_init appears not to be useful: see bug#562 and
3126 # http://lists.gnu.org/archive/html/emacs-devel/2007-11/msg01467.html
3127 resolv=no
3128
3129 if test $opsys != darwin; then
3130
3131   AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>
3132 #include <arpa/nameser.h>
3133 #include <resolv.h>]],
3134     [[return res_init();]])],
3135     have_res_init=yes, have_res_init=no)
3136   if test "$have_res_init" = no; then
3137     OLIBS="$LIBS"
3138     LIBS="$LIBS -lresolv"
3139     AC_MSG_CHECKING(for res_init with -lresolv)
3140     AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <netinet/in.h>
3141 #include <arpa/nameser.h>
3142 #include <resolv.h>]],
3143       [[return res_init();]])],
3144       have_res_init=yes, have_res_init=no)
3145     AC_MSG_RESULT($have_res_init)
3146     if test "$have_res_init" = yes ; then
3147       resolv=yes
3148     fi
3149     LIBS="$OLIBS"
3150   fi
3151
3152   if test "$have_res_init" = yes; then
3153     AC_DEFINE(HAVE_RES_INIT, 1, [Define to 1 if res_init is available.])
3154   fi
3155 fi                              dnl !darwin
3156
3157 # Do we need the Hesiod library to provide the support routines?
3158 dnl FIXME?  Should we be skipping this on Darwin too?
3159 LIBHESIOD=
3160 if test "$with_hesiod" != no ; then
3161   # Don't set $LIBS here -- see comments above.  FIXME which comments?
3162   AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
3163      [AC_CHECK_LIB(resolv, res_send, resolv=yes,
3164                   [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
3165   if test "$resolv" = yes ; then
3166     RESOLVLIB=-lresolv
3167   else
3168     RESOLVLIB=
3169   fi
3170   AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
3171         hesiod=yes, :, $RESOLVLIB)])
3172
3173   if test x"$hesiod" = xyes; then
3174     AC_DEFINE(HAVE_LIBHESIOD, 1,
3175               [Define to 1 if you have the hesiod library (-lhesiod).])
3176     LIBHESIOD=-lhesiod
3177   fi
3178 fi
3179 AC_SUBST(LIBHESIOD)
3180
3181 # Do we need libresolv (due to res_init or Hesiod)?
3182 if test "$resolv" = yes && test $opsys != darwin; then
3183   AC_DEFINE(HAVE_LIBRESOLV, 1,
3184             [Define to 1 if you have the resolv library (-lresolv).])
3185   LIBRESOLV=-lresolv
3186 else
3187   LIBRESOLV=
3188 fi
3189 AC_SUBST(LIBRESOLV)
3190
3191 # These tell us which Kerberos-related libraries to use.
3192 COM_ERRLIB=
3193 CRYPTOLIB=
3194 KRB5LIB=
3195 DESLIB=
3196 KRB4LIB=
3197
3198 if test "${with_kerberos}" != no; then
3199   AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
3200   if test $have_com_err = yes; then
3201     COM_ERRLIB=-lcom_err
3202     LIBS="$COM_ERRLIB $LIBS"
3203     AC_DEFINE(HAVE_LIBCOM_ERR, 1, [Define to 1 if you have the `com_err' library (-lcom_err).])
3204   fi
3205   AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
3206   if test $have_crypto = yes; then
3207     CRYPTOLIB=-lcrypto
3208     LIBS="$CRYPTOLIB $LIBS"
3209     AC_DEFINE(HAVE_LIBCRYPTO, 1, [Define to 1 if you have the `crypto' library (-lcrypto).])
3210   fi
3211   AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
3212   if test $have_k5crypto = yes; then
3213     CRYPTOLIB=-lk5crypto
3214     LIBS="$CRYPTOLIB $LIBS"
3215     AC_DEFINE(HAVE_LIBK5CRYPTO, 1, [Define to 1 if you have the `k5crypto' library (-lk5crypto).])
3216   fi
3217   AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
3218   if test $have_krb5=yes; then
3219     KRB5LIB=-lkrb5
3220     LIBS="$KRB5LIB $LIBS"
3221     AC_DEFINE(HAVE_LIBKRB5, 1, [Define to 1 if you have the `krb5' library (-lkrb5).])
3222   fi
3223   dnl FIXME Simplify.  Does not match 22 logic, thanks to default_off?
3224   if test "${with_kerberos5}" = no; then
3225     AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
3226     if test $have_des425 = yes; then
3227       DESLIB=-ldes425
3228       LIBS="$DESLIB $LIBS"
3229       AC_DEFINE(HAVE_LIBDES425, 1, [Define to 1 if you have the `des425' library (-ldes425).])
3230     else
3231       AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
3232       if test $have_des = yes; then
3233         DESLIB=-ldes
3234         LIBS="$DESLIB $LIBS"
3235         AC_DEFINE(HAVE_LIBDES, 1, [Define to 1 if you have the `des' library (-ldes).])
3236       fi
3237     fi
3238     AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
3239     if test $have_krb4 = yes; then
3240       KRB4LIB=-lkrb4
3241       LIBS="$KRB4LIB $LIBS"
3242       AC_DEFINE(HAVE_LIBKRB4, 1, [Define to 1 if you have the `krb4' library (-lkrb4).])
3243     else
3244       AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
3245       if test $have_krb = yes; then
3246         KRB4LIB=-lkrb
3247         LIBS="$KRB4LIB $LIBS"
3248         AC_DEFINE(HAVE_LIBKRB, 1, [Define to 1 if you have the `krb' library (-lkrb).])
3249       fi
3250     fi
3251   fi
3252
3253   if test "${with_kerberos5}" != no; then
3254     AC_CHECK_HEADERS(krb5.h,
3255       [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
3256                         [#include <krb5.h>])])
3257   else
3258     AC_CHECK_HEADERS(des.h,,
3259                      [AC_CHECK_HEADERS(kerberosIV/des.h,,
3260                                        [AC_CHECK_HEADERS(kerberos/des.h)])])
3261     AC_CHECK_HEADERS(krb.h,,
3262                      [AC_CHECK_HEADERS(kerberosIV/krb.h,,
3263                                        [AC_CHECK_HEADERS(kerberos/krb.h)])])
3264   fi
3265   AC_CHECK_HEADERS(com_err.h)
3266 fi
3267
3268 AC_SUBST(COM_ERRLIB)
3269 AC_SUBST(CRYPTOLIB)
3270 AC_SUBST(KRB5LIB)
3271 AC_SUBST(DESLIB)
3272 AC_SUBST(KRB4LIB)
3273
3274 AC_CHECK_FUNCS_ONCE(tzset)
3275 AC_MSG_CHECKING(whether localtime caches TZ)
3276 AC_CACHE_VAL(emacs_cv_localtime_cache,
3277 [if test x$ac_cv_func_tzset = xyes; then
3278 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <time.h>
3279 char TZ_GMT0[] = "TZ=GMT0";
3280 char TZ_PST8[] = "TZ=PST8";
3281 main()
3282 {
3283   time_t now = time ((time_t *) 0);
3284   int hour_GMT0, hour_unset;
3285   if (putenv (TZ_GMT0) != 0)
3286     exit (1);
3287   hour_GMT0 = localtime (&now)->tm_hour;
3288   unsetenv("TZ");
3289   hour_unset = localtime (&now)->tm_hour;
3290   if (putenv (TZ_PST8) != 0)
3291     exit (1);
3292   if (localtime (&now)->tm_hour == hour_GMT0)
3293     exit (1);
3294   unsetenv("TZ");
3295   if (localtime (&now)->tm_hour != hour_unset)
3296     exit (1);
3297   exit (0);
3298 }]])], emacs_cv_localtime_cache=no, emacs_cv_localtime_cache=yes,
3299 [# If we have tzset, assume the worst when cross-compiling.
3300 emacs_cv_localtime_cache=yes])
3301 else
3302         # If we lack tzset, report that localtime does not cache TZ,
3303         # since we can't invalidate the cache if we don't have tzset.
3304         emacs_cv_localtime_cache=no
3305 fi])dnl
3306 AC_MSG_RESULT($emacs_cv_localtime_cache)
3307 if test $emacs_cv_localtime_cache = yes; then
3308   AC_DEFINE(LOCALTIME_CACHE, 1,
3309             [Define to 1 if localtime caches TZ.])
3310 fi
3311
3312 ok_so_far=yes
3313 AC_CHECK_FUNC(socket, , ok_so_far=no)
3314 if test $ok_so_far = yes; then
3315   AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
3316 fi
3317 if test $ok_so_far = yes; then
3318   AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
3319 fi
3320 if test $ok_so_far = yes; then
3321 dnl Fixme: Not used.  Should this be HAVE_SOCKETS?
3322   AC_DEFINE(HAVE_INET_SOCKETS, 1,
3323             [Define to 1 if you have inet sockets.])
3324 fi
3325
3326 if test -f /usr/lpp/X11/bin/smt.exp; then
3327   AC_DEFINE(HAVE_AIX_SMT_EXP, 1,
3328             [Define to 1 if the file /usr/lpp/X11/bin/smt.exp exists.])
3329 fi
3330
3331 AC_MSG_CHECKING(whether system supports dynamic ptys)
3332 if test -d /dev/pts && ls -d /dev/ptmx > /dev/null 2>&1 ; then
3333   AC_MSG_RESULT(yes)
3334   AC_DEFINE(HAVE_DEV_PTMX, 1, [Define to 1 if dynamic ptys are supported.])
3335 else
3336   AC_MSG_RESULT(no)
3337 fi
3338
3339 dnl Check for a Solaris 2.4 vfork bug that Autoconf misses (through 2.69).
3340 dnl This can be removed once we assume Autoconf 2.70.
3341 case $canonical in
3342   *-solaris2.4 | *-solaris2.4.*)
3343     dnl Disable the Autoconf-generated vfork test.
3344     : ${ac_cv_func_vfork_works=no};;
3345 esac
3346
3347 AC_FUNC_FORK
3348
3349 AC_CHECK_FUNCS(snprintf)
3350
3351 dnl Adapted from Haible's version.
3352 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
3353   [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
3354     [[char* cs = nl_langinfo(CODESET);]])],
3355     emacs_cv_langinfo_codeset=yes,
3356     emacs_cv_langinfo_codeset=no)
3357   ])
3358 if test $emacs_cv_langinfo_codeset = yes; then
3359   AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
3360     [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
3361 fi
3362
3363 AC_TYPE_MBSTATE_T
3364
3365 AC_CACHE_CHECK([for C restricted array declarations], emacs_cv_c_restrict_arr,
3366   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[void fred (int x[__restrict]);]], [[]])],
3367                   emacs_cv_c_restrict_arr=yes, emacs_cv_c_restrict_arr=no)])
3368 if test "$emacs_cv_c_restrict_arr" = yes; then
3369   AC_DEFINE(__restrict_arr, __restrict,
3370     [Define to compiler's equivalent of C99 restrict keyword in array
3371      declarations.  Define as empty for no equivalent.])
3372 fi
3373
3374 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
3375 dnl how the tty code is related to POSIX and/or other versions of termios.
3376 dnl The following looks like a useful start.
3377 dnl
3378 dnl AC_SYS_POSIX_TERMIOS
3379 dnl if test $ac_cv_sys_posix_termios = yes; then
3380 dnl    AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
3381 dnl                                and macros for terminal control.])
3382 dnl    AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
3383 dnl fi
3384
3385 dnl Turned on June 1996 supposing nobody will mind it.
3386 AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
3387   in the full name stands for the login id.])
3388
3389 dnl Every platform that uses configure (ie every non-MS platform)
3390 dnl supports this.  There is a create-lockfiles option you can
3391 dnl customize if you do not want the lock files to be written.
3392 dnl So it is not clear that this #define still needs to exist.
3393 AC_DEFINE(CLASH_DETECTION, 1, [Define if you want lock files to be written,
3394   so that Emacs can tell instantly when you try to modify a file that
3395   someone else has modified in his/her Emacs.])
3396
3397 dnl Everybody supports this, except MS.
3398 dnl Seems like the kind of thing we should be testing for, though.
3399 ## Note: PTYs are broken on darwin <6.  Use at your own risk.
3400 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
3401
3402 dnl Everybody supports this, except MS-DOS.
3403 dnl Seems like the kind of thing we should be testing for, though.
3404 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
3405 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
3406   4.2-compatible sockets.])
3407
3408 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
3409
3410 AC_DEFINE(NULL_DEVICE, ["/dev/null"], [Name of the file to open to get
3411   a null file, or a data sink.])
3412
3413 AC_DEFINE(SEPCHAR, [':'], [Character that separates PATH elements.])
3414
3415 dnl Everybody supports this, except MS-DOS.
3416 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
3417
3418 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
3419
3420
3421 AC_DEFINE(DIRECTORY_SEP, ['/'],
3422   [Character that separates directories in a file name.])
3423
3424 dnl Only used on MS platforms.
3425 AH_TEMPLATE(DEVICE_SEP, [Character that separates a device in a file name.])
3426
3427 AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
3428   [Returns true if character is a device separator.])
3429
3430 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
3431   [Returns true if character is a directory separator.])
3432
3433 dnl On MS, this also accepts IS_DEVICE_SEP.
3434 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
3435   [Returns true if character is any form of separator.])
3436
3437
3438 AH_TEMPLATE(NO_EDITRES, [Define if XEditRes should not be used.])
3439
3440 case $opsys in
3441   aix4-2)
3442     dnl Unfortunately without libXmu we cannot support EditRes.
3443     if test x$ac_cv_lib_Xmu_XmuConvertStandardSelection != xyes; then
3444       AC_DEFINE(NO_EDITRES, 1)
3445     fi
3446     ;;
3447
3448   hpux*)
3449     dnl Assar Westerlund <assar@sics.se> says this is necessary for
3450     dnl HP-UX 10.20, and that it works for HP-UX 0 as well.
3451     AC_DEFINE(NO_EDITRES, 1)
3452     ;;
3453 esac
3454
3455
3456 case $opsys in
3457   irix6-5 | sol2* | unixware )
3458     dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
3459     dnl instead, there's a system variable _sys_nsig.  Unfortunately, we
3460     dnl need the constant to dimension an array.  So wire in the appropriate
3461     dnl value here.
3462     AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
3463     ;;
3464 esac
3465
3466 emacs_broken_SIGIO=no
3467
3468 case $opsys in
3469   dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
3470   dnl See eg <http://article.gmane.org/gmane.os.openbsd.ports/46831>.
3471   hpux* | irix6-5 | openbsd | sol2* | unixware )
3472     emacs_broken_SIGIO=yes
3473     ;;
3474
3475   aix4-2)
3476     dnl On AIX Emacs uses the gmalloc.c malloc implementation.  But given
3477     dnl the way this system works, libc functions that return malloced
3478     dnl memory use the libc malloc implementation. Calling xfree or
3479     dnl xrealloc on the results of such functions results in a crash.
3480     dnl
3481     dnl One solution for this could be to define SYSTEM_MALLOC in configure,
3482     dnl but that does not currently work on this system.
3483     dnl
3484     dnl It is possible to completely override the malloc implementation on
3485     dnl AIX, but that involves putting the malloc functions in a shared
3486     dnl library and setting the MALLOCTYPE environment variable to point to
3487     dnl that shared library.
3488     dnl
3489     dnl Emacs currently calls xrealloc on the results of get_current_dir name,
3490     dnl to avoid a crash just use the Emacs implementation for that function.
3491     dnl
3492     dnl FIXME We could change the AC_CHECK_FUNCS call near the start
3493     dnl of this file, so that we do not check for get_current_dir_name
3494     dnl on AIX.  But that might be fragile if something else ends
3495     dnl up testing for get_current_dir_name as a dependency.
3496     AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
3497       get_current_dir_name should not be used.])
3498     ;;
3499
3500   freebsd)
3501     dnl Circumvent a bug in FreeBSD.  In the following sequence of
3502     dnl writes/reads on a PTY, read(2) returns bogus data:
3503     dnl
3504     dnl write(2)  1022 bytes
3505     dnl write(2)   954 bytes, get EAGAIN
3506     dnl read(2)   1024 bytes in process_read_output
3507     dnl read(2)     11 bytes in process_read_output
3508     dnl
3509     dnl That is, read(2) returns more bytes than have ever been written
3510     dnl successfully.  The 1033 bytes read are the 1022 bytes written
3511     dnl successfully after processing (for example with CRs added if the
3512     dnl terminal is set up that way which it is here).  The same bytes will
3513     dnl be seen again in a later read(2), without the CRs.
3514     AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
3515       work around an issue when reading from a PTY.])
3516     ;;
3517 esac
3518
3519 case $opsys in
3520   gnu-* | sol2-10 )
3521     dnl FIXME Can't we test if this exists (eg /proc/$$)?
3522     AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
3523   ;;
3524 esac
3525
3526 case $opsys in
3527   darwin | freebsd | netbsd | openbsd )
3528     AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
3529       close a pty to make it a controlling terminal (it is already a
3530       controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
3531   ;;
3532 esac
3533
3534 dnl FIXME Surely we can test for this rather than hard-code it.
3535 case $opsys in
3536   netbsd | openbsd) sound_device="/dev/audio" ;;
3537   *) sound_device="/dev/dsp" ;;
3538 esac
3539
3540 dnl Used in sound.c
3541 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
3542   [Name of the default sound device.])
3543
3544
3545 dnl Emacs can read input using SIGIO and buffering characters itself,
3546 dnl or using CBREAK mode and making C-g cause SIGINT.
3547 dnl The choice is controlled by the variable interrupt_input.
3548 dnl
3549 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
3550 dnl
3551 dnl Emacs uses the presence of the USABLE_SIGIO macro
3552 dnl to indicate whether or not signal-driven I/O is possible.  It uses
3553 dnl INTERRUPT_INPUT to decide whether to use it by default.
3554 dnl
3555 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
3556 dnl CBREAK mode has two disadvantages
3557 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
3558 dnl I hear that in system V this problem does not exist.
3559 dnl 2) Control-G causes output to be discarded.
3560 dnl I do not know whether this can be fixed in system V.
3561 dnl
3562 dnl Another method of doing input is planned but not implemented.
3563 dnl It would have Emacs fork off a separate process
3564 dnl to read the input and send it to the true Emacs process
3565 dnl through a pipe.
3566 case $opsys in
3567   darwin | gnu-linux | gnu-kfreebsd )
3568     AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
3569   ;;
3570 esac
3571
3572
3573 dnl If the system's imake configuration file defines `NeedWidePrototypes'
3574 dnl as `NO', we must define NARROWPROTO manually.  Such a define is
3575 dnl generated in the Makefile generated by `xmkmf'.  If we don't define
3576 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
3577 dnl taking float or double parameters.
3578 case $opsys in
3579   cygwin|gnu|gnu-linux|gnu-kfreebsd|irix6-5|freebsd|netbsd|openbsd)
3580     AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
3581       file defines `NeedWidePrototypes' as `NO'.])
3582   ;;
3583 esac
3584
3585
3586 dnl Used in process.c, this must be a loop, even if it only runs once.
3587 dnl (Except on SGI; see below.  Take that, clarity and consistency!)
3588 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
3589 dnl Only used if !PTY_ITERATION.  Iterate from FIRST_PTY_LETTER to z,
3590 dnl trying suffixes 0-16.
3591 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
3592   first PTY, if PTYs are supported.])
3593 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
3594 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
3595   end of a PTY, if non-standard.])
3596 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
3597   end of a PTY, if non-standard.])
3598
3599 case $opsys in
3600   aix4-2 )
3601     AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
3602     dnl You allocate a pty by opening /dev/ptc to get the master side.
3603     dnl To get the name of the slave side, you just ttyname() the master side.
3604     AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
3605     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
3606     ;;
3607
3608   cygwin )
3609     AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
3610     dnl multi-line AC_DEFINEs are hard. :(
3611     AC_DEFINE(PTY_OPEN, [ do { int dummy; sigset_t blocked, procmask; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, &procmask); if (-1 == openpty (&fd, &dummy, pty_name, 0, 0)) fd = -1; pthread_sigmask (SIG_SETMASK, &procmask, 0); if (fd >= 0) emacs_close (dummy); } while (0)])
3612     AC_DEFINE(PTY_NAME_SPRINTF, [])
3613     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
3614     ;;
3615
3616   dnl FIXME?  Maybe use same as freebsd - see bug#12040.
3617   darwin )
3618     AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
3619     dnl Not used, because PTY_ITERATION is defined.
3620     AC_DEFINE(FIRST_PTY_LETTER, ['p'])
3621     dnl Note that openpty may fork via grantpt on Mac OS X 10.4/Darwin 8.
3622     dnl But we don't have to block SIGCHLD because it is blocked in the
3623     dnl implementation of grantpt.
3624     AC_DEFINE(PTY_OPEN, [ do { int slave; if (openpty (&fd, &slave, pty_name, NULL, NULL) == -1) fd = -1; else emacs_close (slave); } while (0)])
3625     AC_DEFINE(PTY_NAME_SPRINTF, [])
3626     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
3627     ;;
3628
3629   gnu | openbsd )
3630     AC_DEFINE(FIRST_PTY_LETTER, ['p'])
3631     ;;
3632
3633   gnu-linux | gnu-kfreebsd | freebsd | netbsd )
3634     dnl if HAVE_GRANTPT
3635     if test "x$ac_cv_func_grantpt" = xyes; then
3636       AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
3637       AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
3638       dnl Note that grantpt and unlockpt may fork.  We must block SIGCHLD
3639       dnl to prevent sigchld_handler from intercepting the child's death.
3640       AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptyname = 0; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); if (grantpt (fd) != -1 && unlockpt (fd) != -1) ptyname = ptsname(fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (!ptyname) { close (fd); return -1; } snprintf (pty_name, sizeof pty_name, "%s", ptyname); }])
3641       dnl if HAVE_POSIX_OPENPT
3642       if test "x$ac_cv_func_posix_openpt" = xyes; then
3643         AC_DEFINE(PTY_OPEN, [fd = posix_openpt (O_RDWR | O_NOCTTY)])
3644         AC_DEFINE(PTY_NAME_SPRINTF, [])
3645       dnl if HAVE_GETPT
3646       elif test "x$ac_cv_func_getpt" = xyes; then
3647         AC_DEFINE(PTY_OPEN, [fd = getpt ()])
3648         AC_DEFINE(PTY_NAME_SPRINTF, [])
3649       else
3650         AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
3651       fi
3652     else
3653       AC_DEFINE(FIRST_PTY_LETTER, ['p'])
3654     fi
3655     ;;
3656
3657   hpux*)
3658     AC_DEFINE(FIRST_PTY_LETTER, ['p'])
3659     AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
3660     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
3661     ;;
3662
3663   irix6-5 )
3664     dnl It looks like this cannot be right, because it is not a loop.
3665     dnl However, process.c actually does this:
3666     dnl # ifndef __sgi
3667     dnl   continue;
3668     dnl # else
3669     dnl   return -1;
3670     dnl # endif
3671     dnl which presumably makes it OK, since irix == sgi (?).
3672     dnl FIXME it seems like this special treatment is unnecessary?
3673     dnl Why can't irix use a single-trip loop like eg cygwin?
3674     AC_DEFINE(PTY_ITERATION, [])
3675     dnl Not used, because PTY_ITERATION is defined.
3676     AC_DEFINE(FIRST_PTY_LETTER, ['q'])
3677     AC_DEFINE(PTY_OPEN, [ { struct sigaction ocstat, cstat; struct stat stb; char * name; sigemptyset(&cstat.sa_mask); cstat.sa_handler = SIG_DFL; cstat.sa_flags = 0; sigaction(SIGCHLD, &cstat, &ocstat); name = _getpty (&fd, O_RDWR | O_NDELAY, 0600, 0); sigaction(SIGCHLD, &ocstat, (struct sigaction *)0); if (name == 0) return -1; if (fd < 0) return -1; if (fstat (fd, &stb) < 0) return -1; strcpy (pty_name, name); }])
3678     dnl No need to get the pty name at all.
3679     AC_DEFINE(PTY_NAME_SPRINTF, [])
3680     dnl No need to use sprintf to get the tty name--we get that from _getpty.
3681     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
3682     ;;
3683
3684   sol2* )
3685     dnl On SysVr4, grantpt(3) forks a subprocess, so keep sigchld_handler()
3686     dnl from intercepting that death.  If any child but grantpt's should die
3687     dnl within, it should be caught after sigrelse(2).
3688     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1 || unlockpt (fd) == -1 || !(ptyname = ptsname (fd))) { emacs_close (fd); return -1; } snprintf (pty_name, sizeof pty_name, "%s", ptyname); }])
3689     ;;
3690
3691   unixware )
3692     dnl Comments are as per sol2*.
3693     AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1) fatal("could not grant slave pty"); if (unlockpt(fd) == -1) fatal("could not unlock slave pty"); if (!(ptyname = ptsname(fd))) fatal ("could not enable slave pty"); snprintf (pty_name, sizeof pty_name, "%s", ptyname); }])
3694     ;;
3695 esac
3696
3697
3698 case $opsys in
3699   sol2* | unixware )
3700     dnl This change means that we don't loop through allocate_pty too
3701     dnl many times in the (rare) event of a failure.
3702     AC_DEFINE(FIRST_PTY_LETTER, ['z'])
3703     AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
3704     dnl Push various streams modules onto a PTY channel.  Used in process.c.
3705     AC_DEFINE(SETUP_SLAVE_PTY, [if (ioctl (xforkin, I_PUSH, "ptem") == -1) fatal ("ioctl I_PUSH ptem"); if (ioctl (xforkin, I_PUSH, "ldterm") == -1) fatal ("ioctl I_PUSH ldterm"); if (ioctl (xforkin, I_PUSH, "ttcompat") == -1) fatal ("ioctl I_PUSH ttcompat");], [How to set up a slave PTY, if needed.])
3706     ;;
3707 esac
3708
3709
3710 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
3711 "typing" a signal character on the pty.])
3712
3713 case $opsys in
3714   dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
3715   dnl thomas@mathematik.uni-bremen.de says this is needed for IRIX.
3716   aix4-2 | cygwin | gnu | irix6-5 | freebsd | netbsd | openbsd | darwin )
3717     AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
3718     ;;
3719
3720   dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
3721   dnl FIXME Does gnu-kfreebsd have linux/version.h?  It seems unlikely...
3722   gnu-linux | gnu-kfreebsd )
3723
3724     AC_MSG_CHECKING([for signals via characters])
3725     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
3726 #include <linux/version.h>
3727 #if LINUX_VERSION_CODE < 0x20400
3728 # error "Linux version too old"
3729 #endif
3730       ]], [[]])], emacs_signals_via_chars=yes, emacs_signals_via_chars=no)
3731
3732     AC_MSG_RESULT([$emacs_signals_via_chars])
3733     test $emacs_signals_via_chars = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
3734     ;;
3735 esac
3736
3737
3738 dnl Used in vm-limit.c
3739 AH_TEMPLATE(DATA_START, [Address of the start of the data segment.])
3740 dnl Used in lisp.h, emacs.c, mem-limits.h
3741 dnl NEWS.18 describes this as "a number which contains
3742 dnl the high bits to be inclusive or'ed with pointers that are unpacked."
3743 AH_TEMPLATE(DATA_SEG_BITS, [Extra bits to be or'd in with any pointers
3744 stored in a Lisp_Object.])
3745 dnl if Emacs uses fewer than 32 bits for the value field of a LISP_OBJECT.
3746
3747 case $opsys in
3748   gnu)
3749     dnl libc defines data_start.
3750     AC_DEFINE(DATA_START, [({ extern int data_start; (char *) &data_start; })])
3751     ;;
3752
3753   aix*)
3754     dnl This works with 32-bit executables; Emacs doesn't support 64-bit.
3755     AC_DEFINE(DATA_START, [0x20000000])
3756     AC_DEFINE(DATA_SEG_BITS, [0x20000000])
3757     ;;
3758   hpux*)
3759     dnl The data segment on this machine always starts at address 0x40000000.
3760     AC_DEFINE(DATA_START, [0x40000000])
3761     AC_DEFINE(DATA_SEG_BITS, [0x40000000])
3762     ;;
3763   irix6-5)
3764     AC_DEFINE(DATA_START, [0x10000000])
3765     AC_DEFINE(DATA_SEG_BITS, [0x10000000])
3766     ;;
3767 esac
3768
3769
3770 AH_TEMPLATE(TAB3, [Undocumented.])
3771
3772 case $opsys in
3773   darwin) AC_DEFINE(TAB3, OXTABS) ;;
3774
3775   gnu | freebsd | netbsd | openbsd )
3776     AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
3777     AC_DEFINE(TAB3, OXTABS)
3778     ;;
3779
3780   gnu-linux | gnu-kfreebsd )
3781     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
3782 #ifndef __ia64__
3783 # error "not ia64"
3784 #endif
3785       ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
3786         [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (0)],
3787         [Mark a secondary stack, like the register stack on the ia64.]), [])
3788     ;;
3789
3790   hpux*)
3791     AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
3792       run_time_remap; for HPUX.])
3793     ;;
3794 esac
3795
3796
3797 dnl This won't be used automatically yet.  We also need to know, at least,
3798 dnl that the stack is continuous.
3799 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
3800   registers relevant for conservative garbage collection in the jmp_buf.])
3801
3802
3803 case $opsys in
3804   dnl Not all the architectures are tested, but there are Debian packages
3805   dnl for SCM and/or Guile on them, so the technique must work.  See also
3806   dnl comments in alloc.c concerning setjmp and gcc.
3807   dnl Fixme: it's probably safe to just use the GCC conditional below.
3808   gnu-linux | gnu-kfreebsd )
3809     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
3810 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
3811   || defined __alpha__ || defined __mips__ || defined __s390__ \
3812   || defined __arm__ || defined __powerpc__ || defined __amd64__ \
3813   || defined __ia64__ || defined __sh__
3814 /* ok */
3815 #else
3816 # error "setjmp not known to work on this arch"
3817 #endif
3818     ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
3819     ;;
3820 esac
3821
3822
3823 if test x$GCC = xyes; then
3824    dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
3825    AC_DEFINE(GC_SETJMP_WORKS, 1)
3826 else
3827   case $opsys in
3828     dnl irix: Tested on Irix 6.5.  SCM worked on earlier versions.
3829     freebsd | netbsd | openbsd | irix6-5 | sol2* )
3830       AC_DEFINE(GC_SETJMP_WORKS, 1)
3831       ;;
3832   esac
3833 fi                              dnl GCC?
3834
3835 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
3836   [AC_LINK_IFELSE(
3837      [AC_LANG_PROGRAM(
3838        [[#include <setjmp.h>
3839        ]],
3840        [[jmp_buf j;
3841          if (! _setjmp (j))
3842            _longjmp (j, 1);]])],
3843      [emacs_cv_func__setjmp=yes],
3844      [emacs_cv_func__setjmp=no])])
3845 if test $emacs_cv_func__setjmp = yes; then
3846   AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
3847 else
3848   AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
3849     [AC_LINK_IFELSE(
3850        [AC_LANG_PROGRAM(
3851          [[#include <setjmp.h>
3852          ]],
3853          [[sigjmp_buf j;
3854            if (! sigsetjmp (j, 1))
3855              siglongjmp (j, 1);]])],
3856        [emacs_cv_func_sigsetjmp=yes],
3857        [emacs_cv_func_sigsetjmp=no])])
3858   if test $emacs_cv_func_sigsetjmp = yes; then
3859     AC_DEFINE([HAVE_SIGSETJMP], 1,
3860       [Define to 1 if sigsetjmp and siglongjmp work.
3861        The value of this symbol is irrelevant if HAVE__SETJMP is defined.])
3862   fi
3863 fi
3864
3865 case $opsys in
3866   sol2* | unixware )
3867     dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
3868     dnl subprocesses the usual way.  But TIOCSIGNAL does work for PTYs,
3869     dnl and this is all we need.
3870     AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
3871     ;;
3872 esac
3873
3874
3875 case $opsys in
3876   hpux* | sol2* )
3877     dnl Used in xfaces.c.
3878     AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
3879       some systems, where it requires time.h.])
3880     ;;
3881 esac
3882
3883
3884 dnl Define symbols to identify the version of Unix this is.
3885 dnl Define all the symbols that apply correctly.
3886 AH_TEMPLATE(BSD_SYSTEM, [Define if the system is compatible with BSD 4.2.])
3887 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
3888 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
3889 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
3890 AH_TEMPLATE(USG5, [Define if the system is compatible with System V.])
3891 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
3892
3893 case $opsys in
3894   aix4-2)
3895     AC_DEFINE(USG, [])
3896     AC_DEFINE(USG5, [])
3897     dnl This symbol should be defined on AIX Version 3  ???????
3898     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
3899 #ifndef _AIX
3900 # error "_AIX not defined"
3901 #endif
3902     ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
3903     ;;
3904
3905   cygwin)
3906     AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
3907     ;;
3908
3909   darwin)
3910     dnl BSD4_3 and BSD4_4 are already defined in sys/param.h.
3911     AC_DEFINE(BSD_SYSTEM, [])
3912     dnl More specific than the above two.  We cannot use __APPLE__ as this
3913     dnl may not be defined on non-OSX Darwin, and we cannot define DARWIN
3914     dnl here because Panther and lower CoreFoundation.h uses DARWIN to
3915     dnl distinguish OS X from pure Darwin.
3916     AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
3917     ;;
3918
3919   freebsd)
3920     dnl Hack to avoid calling AC_PREPROC_IFELSE multiple times.
3921     dnl Would not be needed with autoconf >= 2.67, where the
3922     dnl preprocessed output is accessible in "conftest.i".
3923     AC_DEFINE(BSD_SYSTEM_AHB, 1, [Define if AH_BOTTOM should change BSD_SYSTEM.])
3924     ;;
3925
3926   gnu | netbsd | openbsd )
3927     AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
3928 #ifndef BSD_SYSTEM
3929 # error "BSD_SYSTEM not defined"
3930 #endif
3931     ]], [[]])], [], AC_DEFINE(BSD_SYSTEM, 43) )
3932     ;;
3933
3934   gnu-linux | gnu-kfreebsd )
3935     AC_DEFINE(USG, [])
3936     AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
3937     ;;
3938
3939   hpux*)
3940     AC_DEFINE(USG, [])
3941     AC_DEFINE(USG5, [])
3942     AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
3943     ;;
3944
3945   irix6-5)
3946     AC_DEFINE(USG, [])
3947     AC_DEFINE(USG5, [])
3948     AC_DEFINE(USG5_4, [])
3949     AC_DEFINE(IRIX6_5, [], [Define if the system is IRIX.])
3950     ;;
3951
3952   sol2*)
3953     AC_DEFINE(USG, [])
3954     AC_DEFINE(USG5, [])
3955     AC_DEFINE(USG5_4, [])
3956     AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
3957     ;;
3958
3959   unixware)
3960     AC_DEFINE(USG, [])
3961     AC_DEFINE(USG5, [])
3962     AC_DEFINE(USG5_4, [])
3963     ;;
3964 esac
3965
3966 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
3967   [case $opsys in
3968      aix4-2)
3969        dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
3970        emacs_cv_usable_FIONREAD=no
3971        ;;
3972
3973      *)
3974        AC_COMPILE_IFELSE(
3975          [AC_LANG_PROGRAM([[#include <sys/types.h>
3976                             #include <sys/ioctl.h>
3977                             #ifdef USG5_4
3978                             # include <sys/filio.h>
3979                             #endif
3980                           ]],
3981                           [[int foo = ioctl (0, FIONREAD, &foo);]])],
3982          [emacs_cv_usable_FIONREAD=yes],
3983          [emacs_cv_usable_FIONREAD=no])
3984        ;;
3985    esac])
3986 if test $emacs_cv_usable_FIONREAD = yes; then
3987   AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
3988
3989   if test $emacs_broken_SIGIO = no; then
3990     AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
3991       [AC_COMPILE_IFELSE(
3992          [AC_LANG_PROGRAM([[#include <fcntl.h>
3993                             #include <signal.h>
3994                           ]],
3995                           [[int foo = SIGIO | F_SETFL | FASYNC;]])],
3996          [emacs_cv_usable_SIGIO=yes],
3997          [emacs_cv_usable_SIGIO=no])],
3998       [emacs_cv_usable_SIGIO=yes],
3999       [emacs_cv_usable_SIGIO=no])
4000     if test $emacs_cv_usable_SIGIO = yes; then
4001       AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4002     fi
4003   fi
4004 fi
4005
4006
4007 case $opsys in
4008   dnl Emacs supplies its own malloc, but glib (part of Gtk+) calls
4009   dnl memalign and on Cygwin, that becomes the Cygwin-supplied memalign.
4010   dnl As malloc is not the Cygwin malloc, the Cygwin memalign always
4011   dnl returns ENOSYS.  A workaround is to set G_SLICE=always-malloc. */
4012   cygwin)
4013     AC_DEFINE(G_SLICE_ALWAYS_MALLOC, 1, [Define to set the
4014       G_SLICE environment variable to "always-malloc" at startup, if
4015       using GTK.])
4016     ;;
4017
4018   hpux11)
4019     dnl It works to open the pty's tty in the parent (Emacs), then
4020     dnl close and reopen it in the child.
4021     AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4022       works to open a pty's tty in the parent process, then close and
4023       reopen it in the child.])
4024     ;;
4025
4026   irix6-5)
4027     AC_DEFINE(PREFER_VSUSP, 1, [Define if process_send_signal should
4028       use VSUSP instead of VSWTCH.])
4029     ;;
4030
4031   sol2-10)
4032     AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
4033       on Solaris.])
4034     ;;
4035 esac
4036
4037 # Set up the CFLAGS for real compilation, so we can substitute it.
4038 CFLAGS="$REAL_CFLAGS"
4039 CPPFLAGS="$REAL_CPPFLAGS"
4040
4041 ## Hack to detect a buggy GCC version.
4042 if test "x$GCC" = xyes \
4043    && test x"`$CC --version 2> /dev/null | grep 'gcc.* 4.5.0'`" != x \
4044    && test x"`echo $CFLAGS | grep '\-O@<:@23@:>@'`" != x \
4045    && test x"`echo $CFLAGS | grep '\-fno-optimize-sibling-calls'`" = x; then
4046    AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS'.])
4047 fi
4048
4049 version=$PACKAGE_VERSION
4050
4051 copyright="Copyright (C) 2013 Free Software Foundation, Inc."
4052 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
4053   [Short copyright string for this version of Emacs.])
4054 AC_SUBST(copyright)
4055
4056 ### Specify what sort of things we'll be editing into Makefile and config.h.
4057 ### Use configuration here uncanonicalized to avoid exceeding size limits.
4058 AC_SUBST(version)
4059 AC_SUBST(configuration)
4060 ## Unused?
4061 AC_SUBST(canonical)
4062 AC_SUBST(srcdir)
4063 AC_SUBST(prefix)
4064 AC_SUBST(exec_prefix)
4065 AC_SUBST(bindir)
4066 AC_SUBST(datadir)
4067 AC_SUBST(sharedstatedir)
4068 AC_SUBST(libexecdir)
4069 AC_SUBST(mandir)
4070 AC_SUBST(infodir)
4071 AC_SUBST(lispdir)
4072 AC_SUBST(leimdir)
4073 AC_SUBST(standardlisppath)
4074 AC_SUBST(locallisppath)
4075 AC_SUBST(lisppath)
4076 AC_SUBST(x_default_search_path)
4077 AC_SUBST(etcdir)
4078 AC_SUBST(archlibdir)
4079 AC_SUBST(docdir)
4080 AC_SUBST(bitmapdir)
4081 AC_SUBST(gamedir)
4082 AC_SUBST(gameuser)
4083 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
4084 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
4085 ## end of LIBX_BASE, but nothing ever set it.
4086 AC_SUBST(LD_SWITCH_X_SITE)
4087 AC_SUBST(C_SWITCH_X_SITE)
4088 AC_SUBST(GNUSTEP_CFLAGS)
4089 AC_SUBST(CFLAGS)
4090 ## Used in lwlib/Makefile.in.
4091 AC_SUBST(X_TOOLKIT_TYPE)
4092 AC_SUBST(ns_appdir)
4093 AC_SUBST(ns_appbindir)
4094 AC_SUBST(ns_appresdir)
4095 AC_SUBST(ns_appsrc)
4096 AC_SUBST(GNU_OBJC_CFLAGS)
4097 AC_SUBST(OTHER_FILES)
4098
4099 if test -n "${term_header}"; then
4100     AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
4101         [Define to the header for the built-in window system.])
4102 fi
4103
4104 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION,  "${canonical}",
4105                    [Define to the canonical Emacs configuration name.])
4106 dnl Replace any embedded " characters (bug#13274).
4107 emacs_config_options=`echo "$emacs_config_options " | sed -e 's/--no-create //' -e 's/--no-recursion //' -e 's/ *$//' -e "s/\"/'/g"`
4108 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
4109                    [Define to the options passed to configure.])
4110 AH_TEMPLATE(config_opsysfile, [Some platforms that do not use configure
4111   define this to include extra configuration information.])
4112
4113 XMENU_OBJ=
4114 XOBJ=
4115 FONT_OBJ=
4116 if test "${HAVE_X_WINDOWS}" = "yes" ; then
4117   AC_DEFINE(HAVE_X_WINDOWS, 1,
4118             [Define to 1 if you want to use the X window system.])
4119   XMENU_OBJ=xmenu.o
4120   XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o xgselect.o"
4121   FONT_OBJ=xfont.o
4122   if test "$HAVE_XFT" = "yes"; then
4123     FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
4124   elif test "$HAVE_FREETYPE" = "yes"; then
4125     FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
4126   fi
4127   AC_SUBST(FONT_OBJ)
4128 fi
4129 AC_SUBST(XMENU_OBJ)
4130 AC_SUBST(XOBJ)
4131 AC_SUBST(FONT_OBJ)
4132
4133 WIDGET_OBJ=
4134 MOTIF_LIBW=
4135 if test "${USE_X_TOOLKIT}" != "none" ; then
4136   WIDGET_OBJ=widget.o
4137   AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
4138   if test "${USE_X_TOOLKIT}" = "LUCID"; then
4139     AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
4140   elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
4141     AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
4142     MOTIF_LIBW=-lXm
4143     case "$opsys" in
4144       gnu-linux)
4145         ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
4146         MOTIF_LIBW="$MOTIF_LIBW -lXpm"
4147         ;;
4148
4149       unixware)
4150         ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
4151         ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
4152         MOTIF_LIBW="MOTIF_LIBW -lXimp"
4153         ;;
4154
4155       aix4-2)
4156         ## olson@mcs.anl.gov says -li18n is needed by -lXm.
4157         MOTIF_LIBW="$MOTIF_LIBW -li18n"
4158         ;;
4159     esac
4160     MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
4161   fi
4162 fi
4163 AC_SUBST(WIDGET_OBJ)
4164
4165 TOOLKIT_LIBW=
4166 case "$USE_X_TOOLKIT" in
4167   MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
4168   LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
4169   none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
4170 esac
4171 AC_SUBST(TOOLKIT_LIBW)
4172
4173 if test "$USE_X_TOOLKIT" = "none"; then
4174   LIBXT_OTHER="\$(LIBXSM)"
4175   OLDXMENU_TARGET="really-oldXMenu"
4176 else
4177   LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
4178   OLDXMENU_TARGET="really-lwlib"
4179 fi
4180 AC_SUBST(LIBXT_OTHER)
4181
4182 ## The X Menu stuff is present in the X10 distribution, but missing
4183 ## from X11.  If we have X10, just use the installed library;
4184 ## otherwise, use our own copy.
4185 if test "${HAVE_X11}" = "yes" ; then
4186   AC_DEFINE(HAVE_X11, 1,
4187             [Define to 1 if you want to use version 11 of X windows.
4188              Otherwise, Emacs expects to use version 10.])
4189
4190   if test "$USE_X_TOOLKIT" = "none"; then
4191     OLDXMENU="\${oldXMenudir}/libXMenu11.a"
4192   else
4193     OLDXMENU="\${lwlibdir}/liblw.a"
4194   fi
4195   LIBXMENU="\$(OLDXMENU)"
4196   LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
4197   OLDXMENU_DEPS="\${OLDXMENU} ../src/\${OLDXMENU}"
4198 else
4199   ## For a syntactically valid Makefile; not actually used for anything.
4200   ## See comments in src/Makefile.in.
4201   OLDXMENU=nothing
4202   ## FIXME This case (!HAVE_X11 && HAVE_X_WINDOWS) is no longer possible(?).
4203   if test "${HAVE_X_WINDOWS}" = "yes"; then
4204     LIBXMENU="-lXMenu"
4205   else
4206     LIBXMENU=
4207   fi
4208   LIBX_OTHER=
4209   OLDXMENU_DEPS=
4210 fi
4211
4212 if test "$HAVE_GTK" = "yes" || test "$HAVE_MENUS" != "yes"; then
4213   OLDXMENU_TARGET=
4214   OLDXMENU=nothing
4215   LIBXMENU=
4216   OLDXMENU_DEPS=
4217 fi
4218
4219 AC_SUBST(OLDXMENU_TARGET)
4220 AC_SUBST(OLDXMENU)
4221 AC_SUBST(LIBXMENU)
4222 AC_SUBST(LIBX_OTHER)
4223 AC_SUBST(OLDXMENU_DEPS)
4224
4225 if test "${HAVE_MENUS}" = "yes" ; then
4226   AC_DEFINE(HAVE_MENUS, 1,
4227             [Define to 1 if you have mouse menus.
4228              (This is automatic if you use X, but the option to specify it remains.)
4229              It is also defined with other window systems that support xmenu.c.])
4230 fi
4231
4232 if test "${GNU_MALLOC}" = "yes" ; then
4233   AC_DEFINE(GNU_MALLOC, 1,
4234             [Define to 1 if you want to use the GNU memory allocator.])
4235 fi
4236
4237 RALLOC_OBJ=
4238 if test "${REL_ALLOC}" = "yes" ; then
4239   AC_DEFINE(REL_ALLOC, 1,
4240             [Define REL_ALLOC if you want to use the relocating allocator for
4241              buffer space.])
4242
4243   test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
4244 fi
4245 AC_SUBST(RALLOC_OBJ)
4246
4247 if test "$opsys" = "cygwin"; then
4248   CYGWIN_OBJ="sheap.o cygw32.o"
4249   ## Cygwin differs because of its unexec().
4250   PRE_ALLOC_OBJ=
4251   POST_ALLOC_OBJ=lastfile.o
4252 else
4253   CYGWIN_OBJ=
4254   PRE_ALLOC_OBJ=lastfile.o
4255   POST_ALLOC_OBJ=
4256 fi
4257 AC_SUBST(CYGWIN_OBJ)
4258 AC_SUBST(PRE_ALLOC_OBJ)
4259 AC_SUBST(POST_ALLOC_OBJ)
4260
4261 # Configure gnulib.  Although this does not affect CFLAGS or LIBS permanently.
4262 # it temporarily reverts them to their pre-pkg-config values,
4263 # because gnulib needs to work with both src (which uses the
4264 # pkg-config stuff) and lib-src (which does not).  For example, gnulib
4265 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
4266 # and it therefore needs to run in an environment where LIBS does not
4267 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
4268 # for some package unrelated to lib-src.
4269 SAVE_CFLAGS=$CFLAGS
4270 SAVE_LIBS=$LIBS
4271 CFLAGS=$pre_PKG_CONFIG_CFLAGS
4272 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
4273 gl_ASSERT_NO_GNULIB_POSIXCHECK
4274 gl_ASSERT_NO_GNULIB_TESTS
4275 gl_INIT
4276 CFLAGS=$SAVE_CFLAGS
4277 LIBS=$SAVE_LIBS
4278
4279 case "$opsys" in
4280   aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
4281
4282   darwin)
4283    ## The -headerpad option tells ld (see man page) to leave room at the
4284    ## end of the header for adding load commands.  Needed for dumping.
4285    ## 0x690 is the total size of 30 segment load commands (at 56
4286    ## each); under Cocoa 31 commands are required.
4287    if test "$HAVE_NS" = "yes"; then
4288      libs_nsgui="-framework AppKit"
4289      headerpad_extra=6C8
4290    else
4291      libs_nsgui=
4292      headerpad_extra=690
4293    fi
4294    LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
4295
4296    ## This is here because src/Makefile.in did some extra fiddling around
4297    ## with LD_SWITCH_SYSTEM.  The cpp logic was:
4298    ##   #ifndef LD_SWITCH_SYSTEM
4299    ##   #if !defined (__GNUC__) && ((defined (BSD_SYSTEM) && !defined (COFF)))
4300    ## Since all the *bsds define LD_SWITCH_SYSTEM, this simplifies to:
4301    ## not using gcc, darwin.
4302    ## Because this was done in src/Makefile.in, the resulting part of
4303    ## LD_SWITCH_SYSTEM was not used in configure (ie, in ac_link).
4304    ## It therefore seems cleaner to put this in LD_SWITCH_SYSTEM_TEMACS,
4305    ## rather than LD_SWITCH_SYSTEM.
4306    test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
4307      LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
4308    ;;
4309
4310   ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
4311   ## find X at run-time.
4312   ## When handled by cpp, this was in LD_SWITCH_SYSTEM.  However, at the
4313   ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
4314   ## had not yet been defined and was expanded to null.  Hence LD_SWITCH_SYSTEM
4315   ## had different values in configure (in ac_link) and src/Makefile.in.
4316   ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
4317   gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
4318
4319   *) LD_SWITCH_SYSTEM_TEMACS= ;;
4320 esac
4321
4322 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
4323
4324
4325 LD_FIRSTFLAG=
4326 ORDINARY_LINK=
4327 case "$opsys" in
4328   ## gnu: GNU needs its own crt0.
4329   aix4-2|cygwin|darwin|gnu|hpux*|irix6-5|sol2*|unixware) ORDINARY_LINK=yes ;;
4330
4331   ## On post 1.3 releases of NetBSD, gcc -nostdlib also clears the
4332   ## library search parth, i.e. it won't search /usr/lib for libc and
4333   ## friends.  Using -nostartfiles instead avoids this problem, and
4334   ## will also work on earlier NetBSD releases.
4335   netbsd|openbsd) LD_FIRSTFLAG="-nostartfiles" ;;
4336
4337   ## powerpc*: NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp> says
4338   ##   MkLinux/LinuxPPC needs this.
4339   ## s390x-* only supports opsys = gnu-linux so it can be added here.
4340   gnu-*)
4341     case "$canonical" in
4342       powerpc*|s390x-*) LD_FIRSTFLAG="-nostdlib" ;;
4343     esac
4344     ;;
4345 esac
4346
4347
4348 if test "x$ORDINARY_LINK" = "xyes"; then
4349
4350   LD_FIRSTFLAG=""
4351   AC_DEFINE(ORDINARY_LINK, 1, [Define if the C compiler is the linker.])
4352
4353 ## The system files defining neither ORDINARY_LINK nor LD_FIRSTFLAG are:
4354 ## freebsd, gnu-* not on powerpc*|s390x*.
4355 elif test "x$GCC" = "xyes" && test "x$LD_FIRSTFLAG" = "x"; then
4356
4357   ## Versions of GCC >= 2.0 put their library, libgcc.a, in obscure
4358   ## places that are difficult to figure out at make time.  Fortunately,
4359   ## these same versions allow you to pass arbitrary flags on to the
4360   ## linker, so there is no reason not to use it as a linker.
4361   ##
4362   ## Well, it is not quite perfect.  The "-nostdlib" keeps GCC from
4363   ## searching for libraries in its internal directories, so we have to
4364   ## ask GCC explicitly where to find libgcc.a (LIB_GCC below).
4365   LD_FIRSTFLAG="-nostdlib"
4366 fi
4367
4368 ## FIXME? What setting of EDIT_LDFLAGS should this have?
4369 test "$NS_IMPL_GNUSTEP" = "yes" && LD_FIRSTFLAG="-rdynamic"
4370
4371 AC_SUBST(LD_FIRSTFLAG)
4372
4373
4374 ## FIXME? The logic here is not precisely the same as that above.
4375 ## There is no check here for a pre-defined LD_FIRSTFLAG.
4376 ## Should we only be setting LIB_GCC if LD ~ -nostdlib?
4377 LIB_GCC=
4378 if test "x$GCC" = "xyes" && test "x$ORDINARY_LINK" != "xyes"; then
4379
4380   case "$opsys" in
4381     freebsd|netbsd|openbsd) LIB_GCC= ;;
4382
4383     gnu-*)
4384       ## armin76@gentoo.org reported that the lgcc_s flag is necessary to
4385       ## build on ARM EABI under GNU/Linux.  (Bug#5518)
4386       case $host_cpu in
4387       arm*)
4388         LIB_GCC="-lgcc_s"
4389         ;;
4390       *)
4391         ## FIXME? s/gnu-linux.h used to define LIB_GCC as below, then
4392         ## immediately undefine it again and redefine it to empty.
4393         ## Was the C_SWITCH_X_SITE part really necessary?
4394 ##      LIB_GCC=`$CC $C_SWITCH_X_SITE -print-libgcc-file-name`
4395         LIB_GCC=
4396         ;;
4397       esac
4398       ;;
4399
4400     ## Ask GCC where to find libgcc.a.
4401     *) LIB_GCC=`$CC -print-libgcc-file-name 2> /dev/null` ;;
4402   esac
4403 fi                              dnl if $GCC
4404 AC_SUBST(LIB_GCC)
4405
4406 ## Common for all window systems
4407 if test "$window_system" != "none"; then
4408   AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
4409   WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
4410 fi
4411
4412 AC_SUBST(WINDOW_SYSTEM_OBJ)
4413
4414 AH_TOP([/* GNU Emacs site configuration template file.
4415
4416 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2013
4417   Free Software Foundation, Inc.
4418
4419 This file is part of GNU Emacs.
4420
4421 GNU Emacs is free software: you can redistribute it and/or modify
4422 it under the terms of the GNU General Public License as published by
4423 the Free Software Foundation, either version 3 of the License, or
4424 (at your option) any later version.
4425
4426 GNU Emacs is distributed in the hope that it will be useful,
4427 but WITHOUT ANY WARRANTY; without even the implied warranty of
4428 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
4429 GNU General Public License for more details.
4430
4431 You should have received a copy of the GNU General Public License
4432 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
4433
4434
4435 /* No code in Emacs #includes config.h twice, but some bits of code
4436    intended to work with other packages as well (like gmalloc.c)
4437    think they can include it as many times as they like.  */
4438 #ifndef EMACS_CONFIG_H
4439 #define EMACS_CONFIG_H
4440 ])dnl
4441
4442 AH_BOTTOM([#include <conf_post.h>
4443
4444 #endif /* EMACS_CONFIG_H */
4445
4446 /*
4447 Local Variables:
4448 mode: c
4449 End:
4450 */
4451 ])dnl
4452
4453 #### Report on what we decided to do.
4454 #### Report GTK as a toolkit, even if it doesn't use Xt.
4455 #### It makes printing result more understandable as using GTK sets
4456 #### toolkit_scroll_bars to yes by default.
4457 if test "${HAVE_GTK}" = "yes"; then
4458   USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
4459 fi
4460
4461 echo "
4462 Configured for \`${canonical}'.
4463
4464   Where should the build process find the source code?    ${srcdir}
4465   What compiler should emacs be built with?               ${CC} ${CFLAGS}
4466   Should Emacs use the GNU version of malloc?             ${GNU_MALLOC}${GNU_MALLOC_reason}
4467   Should Emacs use a relocating allocator for buffers?    ${REL_ALLOC}
4468   Should Emacs use mmap(2) for buffer allocation?         $use_mmap_for_buffers
4469   What window system should Emacs use?                    ${window_system}
4470   What toolkit should Emacs use?                          ${USE_X_TOOLKIT}"
4471
4472 if test -n "${x_includes}"; then
4473 echo "  Where do we find X Windows header files?                ${x_includes}"
4474 else
4475 echo "  Where do we find X Windows header files?                Standard dirs"
4476 fi
4477 if test -n "${x_libraries}"; then
4478 echo "  Where do we find X Windows libraries?                   ${x_libraries}"
4479 else
4480 echo "  Where do we find X Windows libraries?                   Standard dirs"
4481 fi
4482
4483 echo "  Does Emacs use -lXaw3d?                                 ${HAVE_XAW3D}"
4484 echo "  Does Emacs use -lXpm?                                   ${HAVE_XPM}"
4485 echo "  Does Emacs use -ljpeg?                                  ${HAVE_JPEG}"
4486 echo "  Does Emacs use -ltiff?                                  ${HAVE_TIFF}"
4487 echo "  Does Emacs use a gif library?                           ${HAVE_GIF} $LIBGIF"
4488 echo "  Does Emacs use -lpng?                                   ${HAVE_PNG}"
4489 echo "  Does Emacs use -lrsvg-2?                                ${HAVE_RSVG}"
4490 echo "  Does Emacs use imagemagick?                             ${HAVE_IMAGEMAGICK}"
4491
4492 echo "  Does Emacs use -lgpm?                                   ${HAVE_GPM}"
4493 echo "  Does Emacs use -ldbus?                                  ${HAVE_DBUS}"
4494 echo "  Does Emacs use -lgconf?                                 ${HAVE_GCONF}"
4495 echo "  Does Emacs use GSettings?                               ${HAVE_GSETTINGS}"
4496 echo "  Does Emacs use -lselinux?                               ${HAVE_LIBSELINUX}"
4497 echo "  Does Emacs use -lgnutls?                                ${HAVE_GNUTLS}"
4498 echo "  Does Emacs use -lxml2?                                  ${HAVE_LIBXML2}"
4499
4500 echo "  Does Emacs use -lfreetype?                              ${HAVE_FREETYPE}"
4501 echo "  Does Emacs use -lm17n-flt?                              ${HAVE_M17N_FLT}"
4502 echo "  Does Emacs use -lotf?                                   ${HAVE_LIBOTF}"
4503 echo "  Does Emacs use -lxft?                                   ${HAVE_XFT}"
4504
4505 echo "  Does Emacs use toolkit scroll bars?                     ${USE_TOOLKIT_SCROLL_BARS}"
4506 echo
4507
4508 if test -n "${EMACSDATA}"; then
4509    echo "  Environment variable EMACSDATA set to:                  $EMACSDATA"
4510 fi
4511 if test -n "${EMACSDOC}"; then
4512    echo "  Environment variable EMACSDOC set to:                   $EMACSDOC"
4513 fi
4514
4515 echo
4516
4517 if test "$HAVE_NS" = "yes"; then
4518    echo
4519    echo "You must run \"${MAKE-make} install\" in order to test the built application.
4520 The installed application will go to nextstep/Emacs.app and can be
4521 run or moved from there."
4522    if test "$EN_NS_SELF_CONTAINED" = "yes"; then
4523       echo "The application will be fully self-contained."
4524     else
4525       echo "The lisp resources for the application will be installed under ${prefix}.
4526 You may need to run \"${MAKE-make} install\" with sudo.  The application will fail
4527 to run if these resources are not installed."
4528    fi
4529    echo
4530 fi
4531
4532 if test "${opsys}" = "cygwin"; then
4533   case `uname -r` in
4534     1.5.*) AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
4535            echo
4536            ;;
4537   esac
4538 fi
4539
4540 # Remove any trailing slashes in these variables.
4541 [test "${prefix}" != NONE &&
4542   prefix=`echo "${prefix}" | sed 's,\([^/]\)/*$,\1,'`
4543 test "${exec_prefix}" != NONE &&
4544   exec_prefix=`echo "${exec_prefix}" | sed 's,\([^/]\)/*$,\1,'`]
4545
4546 if test "$HAVE_NS" = "yes"; then
4547   if test "$NS_IMPL_GNUSTEP" = yes; then
4548     AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
4549       nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
4550   else
4551     AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
4552       nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
4553   fi
4554 fi
4555
4556 dnl Obviously there is duplication here wrt $SUBDIR_MAKEFILES.
4557 dnl You _can_ use that variable in AC_CONFIG_FILES, so long as any directory
4558 dnl using automake (ie lib/) is explicitly listed and not "hidden" in a variable
4559 dnl (else you get "no `Makefile.am' found for any configure output").
4560 dnl This will work, but you get a config.status that is not quite right
4561 dnl (see http://lists.gnu.org/archive/html/bug-autoconf/2008-08/msg00028.html).
4562 dnl That doesn't have any obvious consequences for Emacs, but on the whole
4563 dnl it seems better to just live with the duplication.
4564 SUBDIR_MAKEFILES="lib/Makefile lib-src/Makefile oldXMenu/Makefile doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile leim/Makefile nextstep/Makefile"
4565
4566 AC_CONFIG_FILES([Makefile lib/Makefile lib-src/Makefile oldXMenu/Makefile \
4567        doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile \
4568        doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile \
4569        leim/Makefile nextstep/Makefile])
4570
4571 dnl test/ is not present in release tarfiles.
4572 opt_makefile=test/automated/Makefile
4573
4574 if test -f "$srcdir/$opt_makefile.in"; then
4575   SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
4576   dnl Again, it's best not to use a variable.  Though you can add
4577   dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
4578   AC_CONFIG_FILES([test/automated/Makefile])
4579 fi
4580
4581
4582 dnl admin/ may or may not be present.
4583 opt_makefile=admin/unidata/Makefile
4584
4585 if test -f "$srcdir/$opt_makefile.in"; then
4586   SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
4587   AC_CONFIG_FILES([admin/unidata/Makefile])
4588 fi
4589
4590
4591 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
4592
4593 AC_SUBST(SUBDIR_MAKEFILES_IN)
4594
4595 dnl Make the necessary directories, if they don't exist.
4596 AC_CONFIG_COMMANDS([mkdirs], [
4597 for dir in etc lisp ; do
4598   test -d ${dir} || mkdir ${dir}
4599 done
4600 ])
4601
4602 dnl You might wonder (I did) why epaths.h is generated by running make,
4603 dnl rather than just letting configure generate it from epaths.in.
4604 dnl One reason is that the various paths are not fully expanded (see above);
4605 dnl eg gamedir=${prefix}/var/games/emacs.
4606 dnl Secondly, the GNU Coding standards require that one should be able
4607 dnl to run `make prefix=/some/where/else' and override the values set
4608 dnl by configure.  This also explains the `move-if-change' test and
4609 dnl the use of force in the `epaths-force' rule in Makefile.in.
4610 AC_CONFIG_COMMANDS([epaths], [
4611 echo creating src/epaths.h
4612 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
4613 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS"])
4614
4615 AC_CONFIG_COMMANDS([gdbinit], [
4616 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
4617   echo creating src/.gdbinit
4618   echo "source $srcdir/src/.gdbinit" > src/.gdbinit
4619 fi
4620 ])
4621
4622 AC_OUTPUT