X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fargp.m4;h=4e3940a65c9050b449a7596cdfeef15e26c170e4;hb=b52a6c6545059980b572decf8ebd7b71f0738cef;hp=c7e485d601771d18ce9c486a0a02c614163df85b;hpb=baa7905d0ee85431156cb52e1ee295122ab0a506;p=gnulib.git

diff --git a/m4/argp.m4 b/m4/argp.m4
index c7e485d60..4e3940a65 100644
--- a/m4/argp.m4
+++ b/m4/argp.m4
@@ -1,14 +1,65 @@
-# argp.m4 serial 2
-dnl Copyright (C) 2003 Free Software Foundation, Inc.
-dnl This file is free software, distributed under the terms of the GNU
-dnl General Public License.  As a special exception to the GNU General
-dnl Public License, this file may be distributed as part of a program
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
+# argp.m4 serial 12
+dnl Copyright (C) 2003-2011 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.
 
 AC_DEFUN([gl_ARGP],
 [
-  AC_CHECK_HEADERS([argp.h linewrap.h])
-  AC_CHECK_FUNCS(argp_parse)
   AC_REQUIRE([AC_C_INLINE])
+  AC_REQUIRE([AC_C_RESTRICT])
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  AC_CHECK_DECL([program_invocation_name],
+                [AC_DEFINE([HAVE_DECL_PROGRAM_INVOCATION_NAME], [1],
+                           [Define if program_invocation_name is declared])],
+                [AC_DEFINE([GNULIB_PROGRAM_INVOCATION_NAME], [1],
+                           [Define to 1 to add extern declaration of program_invocation_name to argp.h])],
+                [#include <errno.h>])
+  AC_CHECK_DECL([program_invocation_short_name],
+                [AC_DEFINE([HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME], [1],
+                           [Define if program_invocation_short_name is declared])],
+                [AC_DEFINE([GNULIB_PROGRAM_INVOCATION_SHORT_NAME], [1],
+                           [Define to 1 to add extern declaration of program_invocation_short_name to argp.h])],
+                [#include <errno.h>])
+
+  # Check if program_invocation_name and program_invocation_short_name
+  # are defined elsewhere. It is improbable that only one of them will
+  # be defined and other not, I prefer to stay on the safe side and to
+  # test each one separately.
+  AC_MSG_CHECKING([whether program_invocation_name is defined])
+  AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <argp.h>]],
+                                  [[program_invocation_name = "test";]])],
+                 [AC_DEFINE([HAVE_PROGRAM_INVOCATION_NAME], [1],
+                            [Define if program_invocation_name is defined])
+                  AC_MSG_RESULT([yes])],
+                 [AC_MSG_RESULT([no])])
+
+  AC_MSG_CHECKING([whether program_invocation_short_name is defined])
+  AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <argp.h>]],
+                                  [[program_invocation_short_name = "test";]])],
+                 [AC_DEFINE([HAVE_PROGRAM_INVOCATION_SHORT_NAME], [1],
+                            [Define if program_invocation_short_name is defined])
+                  AC_MSG_RESULT([yes])],
+                 [AC_MSG_RESULT([no])])
+
+  AC_CHECK_DECLS_ONCE([clearerr_unlocked])
+  AC_CHECK_DECLS_ONCE([feof_unlocked])
+  AC_CHECK_DECLS_ONCE([ferror_unlocked])
+  AC_CHECK_DECLS_ONCE([fflush_unlocked])
+  AC_CHECK_DECLS_ONCE([fgets_unlocked])
+  AC_CHECK_DECLS_ONCE([fputc_unlocked])
+  AC_CHECK_DECLS_ONCE([fputs_unlocked])
+  AC_CHECK_DECLS_ONCE([fread_unlocked])
+  AC_CHECK_DECLS_ONCE([fwrite_unlocked])
+  AC_CHECK_DECLS_ONCE([getc_unlocked])
+  AC_CHECK_DECLS_ONCE([getchar_unlocked])
+  AC_CHECK_DECLS_ONCE([putc_unlocked])
+  AC_CHECK_DECLS_ONCE([putchar_unlocked])
+  AC_CHECK_FUNCS_ONCE([flockfile funlockfile])
+  AC_CHECK_HEADERS_ONCE([features.h linewrap.h])
 ])
+
+dnl argp-parse.c depends on GNU getopt internals, therefore use GNU getopt
+dnl always.
+AC_DEFUN([gl_REPLACE_GETOPT_ALWAYS], [])