getline: Update regarding AIX.

[gnulib.git] / m4 / argp.m4

diff --git a/m4/argp.m4 b/m4/argp.m4
index c7e485d..819425b 100644 (file)
--- 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 10
+dnl Copyright (C) 2003-2007, 2009-2010 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_REPLACE_GETOPT
+  dnl Note: gl_REPLACE_GETOPT 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])
 ])