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| 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 ]) |
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