X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Ffseeko.m4;h=3d773656886d4f9811ee80be0fe07a37f347a9c9;hb=ff4e8f6b53d7b8c53856ba8ba2adaad3251e6a88;hp=fd3f019f7ff2228acaf157f26b26ff14036b184e;hpb=16332895663c60d815322830a027ec5f660e2639;p=gnulib.git

diff --git a/m4/fseeko.m4 b/m4/fseeko.m4
index fd3f019f7..3d7736568 100644
--- a/m4/fseeko.m4
+++ b/m4/fseeko.m4
@@ -1,5 +1,5 @@
-# fseeko.m4 serial 1
-dnl Copyright (C) 2007 Free Software Foundation, Inc.
+# fseeko.m4 serial 4
+dnl Copyright (C) 2007-2008 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.
@@ -7,18 +7,28 @@ dnl with or without modifications, as long as this notice is preserved.
 AC_DEFUN([gl_FUNC_FSEEKO],
 [
   AC_REQUIRE([gl_STDIO_H_DEFAULTS])
-  gl_CHECK_FSEEKO
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([gl_STDIN_LARGE_OFFSET])
+
+  dnl Persuade glibc <stdio.h> to declare fseeko().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  AC_CACHE_CHECK([for fseeko], [gl_cv_func_fseeko],
+    [
+      AC_TRY_LINK([#include <stdio.h>], [fseeko (stdin, 0, 0);],
+	[gl_cv_func_fseeko=yes], [gl_cv_func_fseeko=no])
+    ])
   if test $gl_cv_func_fseeko = no; then
     HAVE_FSEEKO=0
+    gl_REPLACE_FSEEKO
+  elif test $gl_cv_var_stdin_large_offset = no; then
+    gl_REPLACE_FSEEKO
   fi
 ])
 
-AC_DEFUN([gl_CHECK_FSEEKO],
+AC_DEFUN([gl_REPLACE_FSEEKO],
 [
-  AC_REQUIRE([AC_PROG_CC])
-  AC_CACHE_CHECK([for fseeko], [gl_cv_func_fseeko],
-    [
-      AC_TRY_LINK([#include <stdio.h>], [fseeko (stdin, 0, 0);],
-        [gl_cv_func_fseeko=yes], [gl_cv_func_fseeko=no])
-    ])
+  AC_LIBOBJ([fseeko])
+  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+  REPLACE_FSEEKO=1
 ])