code.delx.au - gnu-emacs/blob - m4/getopt.m4

   1 # getopt.m4 serial 10
   2 dnl Copyright (C) 2002,2003,2004,2005,2006 Free Software Foundation, Inc.
   3 dnl This file is free software; the Free Software Foundation
   4 dnl gives unlimited permission to copy and/or distribute it,
   5 dnl with or without modifications, as long as this notice is preserved.
   6
   7 # The getopt module assume you want GNU getopt, with getopt_long etc,
   8 # rather than vanilla POSIX getopt.  This means your your code should
   9 # always include <getopt.h> for the getopt prototypes.
  10
  11 AC_DEFUN([gl_GETOPT_SUBSTITUTE],
  12 [
  13   AC_LIBOBJ([getopt])
  14   AC_LIBOBJ([getopt1])
  15   gl_GETOPT_SUBSTITUTE_HEADER
  16   gl_PREREQ_GETOPT
  17 ])
  18
  19 AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
  20 [
  21   GETOPT_H=getopt.h
  22   AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
  23     [Define to rpl_ if the getopt replacement functions and variables
  24      should be used.])
  25   AC_SUBST([GETOPT_H])
  26 ])
  27
  28 AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
  29 [
  30   GETOPT_H=
  31   AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
  32   if test -z "$GETOPT_H"; then
  33     AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=getopt.h])
  34   fi
  35
  36   dnl BSD getopt_long uses an incompatible method to reset option processing,
  37   dnl and (as of 2004-10-15) mishandles optional option-arguments.
  38   if test -z "$GETOPT_H"; then
  39     AC_CHECK_DECL([optreset], [GETOPT_H=getopt.h], [], [#include <getopt.h>])
  40   fi
  41
  42   dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
  43   dnl option string (as of 2005-05-05).
  44   if test -z "$GETOPT_H"; then
  45     AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_gnu_getopt],
  46       [AC_RUN_IFELSE(
  47         [AC_LANG_PROGRAM([#include <getopt.h>],
  48            [[
  49              char *myargv[3];
  50              myargv[0] = "conftest";
  51              myargv[1] = "-+";
  52              myargv[2] = 0;
  53              return getopt (2, myargv, "+a") != '?';
  54            ]])],
  55         [gl_cv_func_gnu_getopt=yes],
  56         [gl_cv_func_gnu_getopt=no],
  57         [dnl cross compiling - pessimistically guess based on decls
  58          dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
  59          dnl option string (as of 2005-05-05).
  60          AC_CHECK_DECL([getopt_clip],
  61            [gl_cv_func_gnu_getopt=no], [gl_cv_func_gnu_getopt=yes],
  62            [#include <getopt.h>])])])
  63     if test "$gl_cv_func_gnu_getopt" = "no"; then
  64       GETOPT_H=getopt.h
  65     fi
  66   fi
  67 ])
  68
  69 AC_DEFUN([gl_GETOPT_IFELSE],
  70 [
  71   AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
  72   AS_IF([test -n "$GETOPT_H"], [$1], [$2])
  73 ])
  74
  75 AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])])
  76
  77 # Prerequisites of lib/getopt*.
  78 AC_DEFUN([gl_PREREQ_GETOPT], [:])
  79
  80 ifelse(dnl      Do not change this comment
  81    arch-tag: 6c64a021-551c-4a7f-9c63-cd7e1ce54707
  82 )dnl