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1 # getopt.m4 serial 14
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2 dnl Copyright (C) 2002-2006, 2008 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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