| 1 | # getopt.m4 serial 13
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| 2 | dnl Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
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| 3 | dnl This file is free software; the Free Software Foundation
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| 4 | dnl gives unlimited permission to copy and/or distribute it,
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| 5 | dnl with or without modifications, as long as this notice is preserved.
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| 6 |
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| 7 | # The getopt module assume you want GNU getopt, with getopt_long etc,
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| 8 | # rather than vanilla POSIX getopt. This means your code should
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| 9 | # always include <getopt.h> for the getopt prototypes.
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| 10 |
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| 11 | AC_DEFUN([gl_GETOPT_SUBSTITUTE],
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| 12 | [
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| 13 | AC_LIBOBJ([getopt])
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| 14 | AC_LIBOBJ([getopt1])
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| 15 | gl_GETOPT_SUBSTITUTE_HEADER
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| 16 | gl_PREREQ_GETOPT
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| 17 | ])
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| 18 |
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| 19 | AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
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| 20 | [
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| 21 | GETOPT_H=getopt.h
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| 22 | AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
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| 23 | [Define to rpl_ if the getopt replacement functions and variables
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| 24 | should be used.])
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| 25 | AC_SUBST([GETOPT_H])
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| 26 | ])
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| 27 |
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| 28 | AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
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| 29 | [
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| 30 | if test -z "$GETOPT_H"; then
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| 31 | AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
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| 32 | fi
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| 33 |
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| 34 | if test -z "$GETOPT_H"; then
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| 35 | AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=getopt.h])
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| 36 | fi
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| 37 |
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| 38 | dnl BSD getopt_long uses an incompatible method to reset option processing,
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| 39 | dnl and (as of 2004-10-15) mishandles optional option-arguments.
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| 40 | if test -z "$GETOPT_H"; then
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| 41 | AC_CHECK_DECL([optreset], [GETOPT_H=getopt.h], [], [#include <getopt.h>])
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| 42 | fi
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| 43 |
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| 44 | dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
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| 45 | dnl option string (as of 2005-05-05).
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| 46 | if test -z "$GETOPT_H"; then
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| 47 | AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_gnu_getopt],
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| 48 | [AC_RUN_IFELSE(
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| 49 | [AC_LANG_PROGRAM([#include <getopt.h>],
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| 50 | [[
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| 51 | char *myargv[3];
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| 52 | myargv[0] = "conftest";
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| 53 | myargv[1] = "-+";
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| 54 | myargv[2] = 0;
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| 55 | return getopt (2, myargv, "+a") != '?';
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| 56 | ]])],
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| 57 | [gl_cv_func_gnu_getopt=yes],
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| 58 | [gl_cv_func_gnu_getopt=no],
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| 59 | [dnl cross compiling - pessimistically guess based on decls
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| 60 | dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
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| 61 | dnl option string (as of 2005-05-05).
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| 62 | AC_CHECK_DECL([getopt_clip],
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| 63 | [gl_cv_func_gnu_getopt=no], [gl_cv_func_gnu_getopt=yes],
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| 64 | [#include <getopt.h>])])])
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| 65 | if test "$gl_cv_func_gnu_getopt" = "no"; then
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| 66 | GETOPT_H=getopt.h
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| 67 | fi
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| 68 | fi
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| 69 | ])
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| 70 |
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| 71 | AC_DEFUN([gl_GETOPT_IFELSE],
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| 72 | [
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| 73 | AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
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| 74 | AS_IF([test -n "$GETOPT_H"], [$1], [$2])
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| 75 | ])
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| 76 |
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| 77 | AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])])
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| 78 |
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| 79 | # Prerequisites of lib/getopt*.
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| 80 | AC_DEFUN([gl_PREREQ_GETOPT],
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| 81 | [
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| 82 | AC_CHECK_DECLS_ONCE([getenv])
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| 83 | ])
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