--- /dev/null
+# fseeko.m4 serial 5
+dnl Copyright (C) 2007-2009 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_FUNC_FSEEKO],
+[
+ AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+ 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_REPLACE_FSEEKO],
+[
+ AC_LIBOBJ([fseeko])
+ AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+ REPLACE_FSEEKO=1
+ dnl If we are also using the fseek module, then fseek needs replacing, too.
+ m4_ifdef([gl_REPLACE_FSEEK], [gl_REPLACE_FSEEK])
+])