AC_PREREQ(2.65)
AC_INIT(emacs, 24.3.50)
+
dnl This is the documented way to record the args passed to configure,
dnl rather than $ac_configure_args.
emacs_config_options="$@"
+## Add some environment variables, if they were passed via the environment
+## rather than on the command-line.
+for var in CFLAGS CPPFLAGS LDFLAGS; do
+ case "$emacs_config_options" in
+ *$var=*) continue ;;
+ esac
+ eval val="\$${var}"
+ test x"$val" = x && continue
+ emacs_config_options="${emacs_config_options}${emacs_config_options:+ }$var=\"$val\""
+done
+
AC_CONFIG_HEADER(src/config.h:src/config.in)
AC_CONFIG_SRCDIR(src/lisp.h)
AC_CONFIG_AUX_DIR(build-aux)
fi
fi
-CRT_DIR=
-AC_ARG_WITH([crt-dir],dnl
-[AS_HELP_STRING([--with-crt-dir=DIR],[directory containing crtn.o etc.
-The default is /usr/lib, or /usr/lib64 on some platforms.])])
-CRT_DIR="${with_crt_dir}"
-
AC_ARG_WITH(gameuser,dnl
[AS_HELP_STRING([--with-gameuser=USER],[user for shared game score files])])
test "X${with_gameuser}" != X && test "${with_gameuser}" != yes \
AC_ARG_ENABLE([gcc-warnings],
[AS_HELP_STRING([--enable-gcc-warnings],
- [turn on lots of GCC warnings. This is intended for
+ [turn on lots of GCC warnings/errors. This is intended for
developers, and may generate false alarms when used
with older or non-GNU development tools.])],
[case $enableval in
LIB_MATH=-lm
-LIB_STANDARD=
-START_FILES=
dnl Current possibilities handled by sed (aix4-2 -> aix,
dnl gnu-linux -> gnu/linux, etc.):
dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux, irix.
dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
-dnl NB do not use CRT_DIR unquoted here, since it might not be set yet.
case $opsys in
cygwin )
LIB_MATH=
- START_FILES='pre-crt0.o'
;;
darwin )
## Adding -lm confuses the dynamic linker, so omit it.
LIB_MATH=
- START_FILES='pre-crt0.o'
;;
freebsd )
- LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtn.o'
- START_FILES='pre-crt0.o $(CRT_DIR)/crt1.o $(CRT_DIR)/crti.o'
SYSTEM_TYPE=berkeley-unix
;;
gnu-linux | gnu-kfreebsd )
- LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtn.o'
- START_FILES='pre-crt0.o $(CRT_DIR)/crt1.o $(CRT_DIR)/crti.o'
;;
hpux10-20 | hpux11 )
- LIB_STANDARD=-lc
- START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o'
;;
dnl NB this may be adjusted below.
netbsd | openbsd )
- LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtend.o'
- START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o $(CRT_DIR)/crtbegin.o'
SYSTEM_TYPE=berkeley-unix
;;
esac
AC_SUBST(LIB_MATH)
-AC_SUBST(START_FILES)
AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
[The type of system you are compiling for; sets `system-type'.])
-dnl Not all platforms use crtn.o files. Check if the current one does.
-crt_files=
-
-for file in x $LIB_STANDARD $START_FILES; do
- case "$file" in
- *CRT_DIR*) crt_files="$crt_files `echo $file | sed -e 's|.*/||'`" ;;
- esac
-done
-
-if test "x$crt_files" != x; then
-
- ## If user specified a crt-dir, use that unconditionally.
- crt_gcc=no
-
- if test "X$CRT_DIR" = "X"; then
-
- CRT_DIR=/usr/lib # default
-
- case "$canonical" in
- x86_64-*-linux-gnu* | s390x-*-linux-gnu*)
- ## On x86-64 and s390x GNU/Linux distributions, the standard library
- ## can be in a variety of places. We only try /usr/lib64 and /usr/lib.
- ## For anything else (eg /usr/lib32), it is up the user to specify
- ## the location (bug#5655).
- ## Test for crtn.o, not just the directory, because sometimes the
- ## directory exists but does not have the relevant files (bug#1287).
- ## FIXME better to test for binary compatibility somehow.
- test -e /usr/lib64/crtn.o && CRT_DIR=/usr/lib64
- ;;
-
- powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*) CRT_DIR=/usr/lib64 ;;
- esac
-
- case "$opsys" in
- hpux10-20) CRT_DIR=/lib ;;
- esac
-
- test "x${GCC}" = xyes && crt_gcc=yes
-
- fi # CRT_DIR = ""
-
- crt_missing=
-
- for file in $crt_files; do
-
- ## If we're using gcc, try to determine it automatically by asking
- ## gcc. [If this doesn't work, CRT_DIR will remain at the
- ## system-dependent default from above.]
- if test $crt_gcc = yes && test ! -e $CRT_DIR/$file; then
-
- crt_file=`$CC --print-file-name=$file 2>/dev/null`
- case "$crt_file" in
- */*)
- CRT_DIR=`AS_DIRNAME(["$crt_file"])`
- ;;
- esac
- fi
-
- dnl We expect all the files to be in a single directory, so after the
- dnl first there is no point asking gcc.
- crt_gcc=no
-
- test -e $CRT_DIR/$file || crt_missing="$crt_missing $file"
- done # $crt_files
-
- test "x$crt_missing" = x || \
- AC_MSG_ERROR([Required file(s) not found:$crt_missing
-Try using the --with-crt-dir option.])
-
-fi # crt_files != ""
-
-AC_SUBST(CRT_DIR)
-
-case $opsys in
- netbsd | openbsd )
- if test -f $CRT_DIR/crti.o; then
-
- test -f $CRT_DIR/crtn.o || \
- AC_MSG_ERROR([Required file not found: crtn.o])
-
- LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtend.o $(CRT_DIR)/crtn.o'
- START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o $(CRT_DIR)/crti.o $(CRT_DIR)/crtbegin.o'
- fi
- ;;
-esac
-
pre_PKG_CONFIG_CFLAGS=$CFLAGS
pre_PKG_CONFIG_LIBS=$LIBS
AC_CHECK_HEADERS_ONCE(
linux/version.h sys/systeminfo.h
coff.h pty.h
- sys/vlimit.h sys/resource.h
+ sys/resource.h
sys/utsname.h pwd.h utmp.h util.h)
AC_MSG_CHECKING(if personality LINUX32 can be set)
CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
- LIB_STANDARD=
- START_FILES=
dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
dnl If they had chosen to either define it or not, we could have
dnl just used AC_CHECK_DECL here.
AC_SUBST(ns_self_contained)
AC_SUBST(NS_OBJ)
AC_SUBST(NS_OBJC_OBJ)
-AC_SUBST(LIB_STANDARD)
HAVE_W32=no
W32_OBJ=
else
test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
VMLIMIT_OBJ=vm-limit.o
+
+ AC_CHECK_HEADERS([sys/vlimit.h])
+ AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
+ [AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[extern char data_start[]; char ch;]],
+ [[return data_start == &ch;]])],
+ [emacs_cv_data_start=yes],
+ [emacs_cv_data_start=no])])
+ if test $emacs_cv_data_start = yes; then
+ AC_DEFINE([HAVE_DATA_START], 1,
+ [Define to 1 if data_start is the address of the start
+ of the main data segment.])
+ fi
fi
AC_SUBST(GMALLOC_OBJ)
AC_SUBST(VMLIMIT_OBJ)
esac
-dnl Used in vm-limit.c
-AH_TEMPLATE(DATA_START, [Address of the start of the data segment.])
-dnl Used in lisp.h, emacs.c, mem-limits.h
+dnl Used in lisp.h, emacs.c, vm-limit.c
dnl NEWS.18 describes this as "a number which contains
dnl the high bits to be inclusive or'ed with pointers that are unpacked."
AH_TEMPLATE(DATA_SEG_BITS, [Extra bits to be or'd in with any pointers
dnl if Emacs uses fewer than 32 bits for the value field of a LISP_OBJECT.
case $opsys in
- gnu)
- dnl libc defines data_start.
- AC_DEFINE(DATA_START, [({ extern int data_start; (char *) &data_start; })])
+ aix*)
+ dnl This works with 32-bit executables; Emacs doesn't support 64-bit.
+ AC_DEFINE(DATA_SEG_BITS, [0x20000000])
;;
-
hpux*)
dnl The data segment on this machine always starts at address 0x40000000.
- AC_DEFINE(DATA_START, [0x40000000])
AC_DEFINE(DATA_SEG_BITS, [0x40000000])
;;
irix6-5)
- AC_DEFINE(DATA_START, [0x10000000])
AC_DEFINE(DATA_SEG_BITS, [0x10000000])
;;
esac
esac
-dnl These won't be used automatically yet. We also need to know, at least,
+dnl This won't be used automatically yet. We also need to know, at least,
dnl that the stack is continuous.
AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
registers relevant for conservative garbage collection in the jmp_buf.])
-AH_TEMPLATE(GC_MARK_STACK, [Define to GC_USE_GCPROS_AS_BEFORE if
- conservative garbage collection is not known to work.])
-
case $opsys in
- aix4-2 | hpux* | unixware)
- dnl Conservative garbage collection has not been tested, so for now
- dnl play it safe and stick with the old-fashioned way of marking.
- AC_DEFINE(GC_MARK_STACK, [GC_USE_GCPROS_AS_BEFORE])
- ;;
-
dnl Not all the architectures are tested, but there are Debian packages
dnl for SCM and/or Guile on them, so the technique must work. See also
dnl comments in alloc.c concerning setjmp and gcc.
#else
# error "setjmp not known to work on this arch"
#endif
- ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1),
- AC_DEFINE(GC_MARK_STACK, [GC_USE_GCPROS_AS_BEFORE]) )
+ ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
;;
esac
AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
[Define to the canonical Emacs configuration name.])
dnl Replace any embedded " characters (bug#13274).
-emacs_config_options=`echo "$emacs_config_options" | sed -e "s/\"/'/g"`
+emacs_config_options=`echo "$emacs_config_options " | sed -e 's/--no-create //' -e 's/--no-recursion //' -e 's/ *$//' -e "s/\"/'/g"`
AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
[Define to the options passed to configure.])
AH_TEMPLATE(config_opsysfile, [Some platforms that do not use configure
AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
-
-LD_FIRSTFLAG=
-ORDINARY_LINK=
-case "$opsys" in
- ## gnu: GNU needs its own crt0.
- aix4-2|cygwin|darwin|gnu|hpux*|irix6-5|sol2*|unixware) ORDINARY_LINK=yes ;;
-
- ## On post 1.3 releases of NetBSD, gcc -nostdlib also clears the
- ## library search parth, i.e. it won't search /usr/lib for libc and
- ## friends. Using -nostartfiles instead avoids this problem, and
- ## will also work on earlier NetBSD releases.
- netbsd|openbsd) LD_FIRSTFLAG="-nostartfiles" ;;
-
- ## powerpc*: NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp> says
- ## MkLinux/LinuxPPC needs this.
- ## s390x-* only supports opsys = gnu-linux so it can be added here.
- gnu-*)
- case "$canonical" in
- powerpc*|s390x-*) LD_FIRSTFLAG="-nostdlib" ;;
- esac
- ;;
-esac
-
-
-if test "x$ORDINARY_LINK" = "xyes"; then
-
- LD_FIRSTFLAG=""
- AC_DEFINE(ORDINARY_LINK, 1, [Define if the C compiler is the linker.])
-
-## The system files defining neither ORDINARY_LINK nor LD_FIRSTFLAG are:
-## freebsd, gnu-* not on powerpc*|s390x*.
-elif test "x$GCC" = "xyes" && test "x$LD_FIRSTFLAG" = "x"; then
-
- ## Versions of GCC >= 2.0 put their library, libgcc.a, in obscure
- ## places that are difficult to figure out at make time. Fortunately,
- ## these same versions allow you to pass arbitrary flags on to the
- ## linker, so there is no reason not to use it as a linker.
- ##
- ## Well, it is not quite perfect. The "-nostdlib" keeps GCC from
- ## searching for libraries in its internal directories, so we have to
- ## ask GCC explicitly where to find libgcc.a (LIB_GCC below).
- LD_FIRSTFLAG="-nostdlib"
-fi
-
-## FIXME? What setting of EDIT_LDFLAGS should this have?
-test "$NS_IMPL_GNUSTEP" = "yes" && LD_FIRSTFLAG="-rdynamic"
-
-AC_SUBST(LD_FIRSTFLAG)
-
-
-## FIXME? The logic here is not precisely the same as that above.
-## There is no check here for a pre-defined LD_FIRSTFLAG.
-## Should we only be setting LIB_GCC if LD ~ -nostdlib?
-LIB_GCC=
-if test "x$GCC" = "xyes" && test "x$ORDINARY_LINK" != "xyes"; then
-
- case "$opsys" in
- freebsd|netbsd|openbsd) LIB_GCC= ;;
-
- gnu-*)
- ## armin76@gentoo.org reported that the lgcc_s flag is necessary to
- ## build on ARM EABI under GNU/Linux. (Bug#5518)
- case $host_cpu in
- arm*)
- LIB_GCC="-lgcc_s"
- ;;
- *)
- ## FIXME? s/gnu-linux.h used to define LIB_GCC as below, then
- ## immediately undefine it again and redefine it to empty.
- ## Was the C_SWITCH_X_SITE part really necessary?
-## LIB_GCC=`$CC $C_SWITCH_X_SITE -print-libgcc-file-name`
- LIB_GCC=
- ;;
- esac
- ;;
-
- ## Ask GCC where to find libgcc.a.
- *) LIB_GCC=`$CC -print-libgcc-file-name 2> /dev/null` ;;
- esac
-fi dnl if $GCC
-AC_SUBST(LIB_GCC)
-
## Common for all window systems
if test "$window_system" != "none"; then
AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])