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# ftello.m4 serial 4
dnl Copyright (C) 2007, 2008, 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_FTELLO],
[
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 ftello], [gl_cv_func_ftello],
[
AC_TRY_LINK([#include <stdio.h>], [ftello (stdin);],
[gl_cv_func_ftello=yes], [gl_cv_func_ftello=no])
])
if test $gl_cv_func_ftello = no; then
HAVE_FTELLO=0
gl_REPLACE_FTELLO
elif test $gl_cv_var_stdin_large_offset = no; then
gl_REPLACE_FTELLO
fi
])
AC_DEFUN([gl_REPLACE_FTELLO],
[
AC_LIBOBJ([ftello])
AC_REQUIRE([gl_STDIO_H_DEFAULTS])
REPLACE_FTELLO=1
])
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