X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fargp.m4;h=80cb72f53ed7e672de4329eb439e5f82a04436e9;hb=01dfd1752e938c6fca54e791eb2adc1de29189f5;hp=fc810041647ec936edecc8f68579e692c13ec015;hpb=bc4997d3dda225ff61dc9377b14aea626d9996b1;p=gnulib.git

diff --git a/m4/argp.m4 b/m4/argp.m4
index fc8100416..80cb72f53 100644
--- a/m4/argp.m4
+++ b/m4/argp.m4
@@ -1,13 +1,65 @@
-# argp.m4 serial 1
-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 8
+dnl Copyright (C) 2003-2007 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])
+  dnl argp-parse.c depends on GNU getopt internals, therefore use GNU getopt
+  dnl always.
+  gl_GETOPT_SUBSTITUTE
+  dnl Note: gl_GETOPT_SUBSTITUTE does AC_LIBOBJ(getopt), AC_LIBOBJ(getopt1).
+
+  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_TRY_LINK([#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_TRY_LINK([#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])
 ])