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-rw-r--r--m4/getopt.m483
1 files changed, 83 insertions, 0 deletions
diff --git a/m4/getopt.m4 b/m4/getopt.m4
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+++ b/m4/getopt.m4
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+# getopt.m4 serial 13
+dnl Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# The getopt module assume you want GNU getopt, with getopt_long etc,
+# rather than vanilla POSIX getopt. This means your code should
+# always include <getopt.h> for the getopt prototypes.
+
+AC_DEFUN([gl_GETOPT_SUBSTITUTE],
+[
+ AC_LIBOBJ([getopt])
+ AC_LIBOBJ([getopt1])
+ gl_GETOPT_SUBSTITUTE_HEADER
+ gl_PREREQ_GETOPT
+])
+
+AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
+[
+ GETOPT_H=getopt.h
+ AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
+ [Define to rpl_ if the getopt replacement functions and variables
+ should be used.])
+ AC_SUBST([GETOPT_H])
+])
+
+AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
+[
+ if test -z "$GETOPT_H"; then
+ AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
+ fi
+
+ if test -z "$GETOPT_H"; then
+ AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=getopt.h])
+ fi
+
+ dnl BSD getopt_long uses an incompatible method to reset option processing,
+ dnl and (as of 2004-10-15) mishandles optional option-arguments.
+ if test -z "$GETOPT_H"; then
+ AC_CHECK_DECL([optreset], [GETOPT_H=getopt.h], [], [#include <getopt.h>])
+ fi
+
+ dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
+ dnl option string (as of 2005-05-05).
+ if test -z "$GETOPT_H"; then
+ AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_gnu_getopt],
+ [AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM([#include <getopt.h>],
+ [[
+ char *myargv[3];
+ myargv[0] = "conftest";
+ myargv[1] = "-+";
+ myargv[2] = 0;
+ return getopt (2, myargv, "+a") != '?';
+ ]])],
+ [gl_cv_func_gnu_getopt=yes],
+ [gl_cv_func_gnu_getopt=no],
+ [dnl cross compiling - pessimistically guess based on decls
+ dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
+ dnl option string (as of 2005-05-05).
+ AC_CHECK_DECL([getopt_clip],
+ [gl_cv_func_gnu_getopt=no], [gl_cv_func_gnu_getopt=yes],
+ [#include <getopt.h>])])])
+ if test "$gl_cv_func_gnu_getopt" = "no"; then
+ GETOPT_H=getopt.h
+ fi
+ fi
+])
+
+AC_DEFUN([gl_GETOPT_IFELSE],
+[
+ AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
+ AS_IF([test -n "$GETOPT_H"], [$1], [$2])
+])
+
+AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])])
+
+# Prerequisites of lib/getopt*.
+AC_DEFUN([gl_PREREQ_GETOPT],
+[
+ AC_CHECK_DECLS_ONCE([getenv])
+])