1 # getopt.m4 serial 14 2 dnl Copyright (C) 2002-2006, 2008 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 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 if test -z "$GETOPT_H"; then 31 AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h]) 32 fi 33 34 if test -z "$GETOPT_H"; then 35 AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=getopt.h]) 36 fi 37 38 dnl BSD getopt_long uses an incompatible method to reset option processing, 39 dnl and (as of 2004-10-15) mishandles optional option-arguments. 40 if test -z "$GETOPT_H"; then 41 AC_CHECK_DECL([optreset], [GETOPT_H=getopt.h], [], [#include <getopt.h>]) 42 fi 43 44 dnl Solaris 10 getopt doesn't handle `+' as a leading character in an 45 dnl option string (as of 2005-05-05). 46 if test -z "$GETOPT_H"; then 47 AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_gnu_getopt], 48 [AC_RUN_IFELSE( 49 [AC_LANG_PROGRAM([[#include <getopt.h>]], 50 [[ 51 char *myargv[3]; 52 myargv[0] = "conftest"; 53 myargv[1] = "-+"; 54 myargv[2] = 0; 55 return getopt (2, myargv, "+a") != '?'; 56 ]])], 57 [gl_cv_func_gnu_getopt=yes], 58 [gl_cv_func_gnu_getopt=no], 59 [dnl cross compiling - pessimistically guess based on decls 60 dnl Solaris 10 getopt doesn't handle `+' as a leading character in an 61 dnl option string (as of 2005-05-05). 62 AC_CHECK_DECL([getopt_clip], 63 [gl_cv_func_gnu_getopt=no], [gl_cv_func_gnu_getopt=yes], 64 [#include <getopt.h>])])]) 65 if test "$gl_cv_func_gnu_getopt" = "no"; then 66 GETOPT_H=getopt.h 67 fi 68 fi 69 ]) 70 71 AC_DEFUN([gl_GETOPT_IFELSE], 72 [ 73 AC_REQUIRE([gl_GETOPT_CHECK_HEADERS]) 74 AS_IF([test -n "$GETOPT_H"], [$1], [$2]) 75 ]) 76 77 AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])]) 78 79 # Prerequisites of lib/getopt*. 80 AC_DEFUN([gl_PREREQ_GETOPT], 81 [ 82 AC_CHECK_DECLS_ONCE([getenv]) 83 ]) 84
