-# fseeko.m4 serial 3
-dnl Copyright (C) 2007 Free Software Foundation, Inc.
+# fseeko.m4 serial 8
+dnl Copyright (C) 2007-2010 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_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])
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#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
+ else
+ if test $gl_cv_var_stdin_large_offset = no; then
+ REPLACE_FSEEKO=1
+ fi
+ fi
+ if test $HAVE_FSEEKO = 0 || test $REPLACE_FSEEKO = 1; 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])
])