-# fflush.m4 serial 7
+# fflush.m4 serial 14
-# Copyright (C) 2007-2010 Free Software Foundation, Inc.
+# Copyright (C) 2007-2013 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_FFLUSH],
[
+ AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+ gl_FUNC_FFLUSH_STDIN
+ if test $gl_cv_func_fflush_stdin = no; then
+ REPLACE_FFLUSH=1
+ fi
+])
+
+dnl Determine whether fflush works on input streams.
+dnl Sets gl_cv_func_fflush_stdin.
+
+AC_DEFUN([gl_FUNC_FFLUSH_STDIN],
+[
+ AC_CHECK_HEADERS_ONCE([unistd.h])
AC_CACHE_CHECK([whether fflush works on input streams],
[gl_cv_func_fflush_stdin],
[echo hello world > conftest.txt
AC_RUN_IFELSE([AC_LANG_PROGRAM(
[[
#include <stdio.h>
-#include <unistd.h>
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#else /* on Windows with MSVC */
+# include <io.h>
+#endif
]], [[FILE *f = fopen ("conftest.txt", "r");
char buffer[10];
int fd;
gl_cv_func_fflush_stdin=no])
rm conftest.txt
])
- if test $gl_cv_func_fflush_stdin = no; then
- gl_REPLACE_FFLUSH
- fi
-])
-
-AC_DEFUN([gl_REPLACE_FFLUSH],
-[
- AC_LIBOBJ([fflush])
- AC_LIBOBJ([fseeko])
- AC_REQUIRE([gl_STDIO_H_DEFAULTS])
- REPLACE_FFLUSH=1
- REPLACE_FSEEKO=1
- gl_PREREQ_FFLUSH
])
# Prerequisites of lib/fflush.c.
-AC_DEFUN([gl_PREREQ_FFLUSH],
-[
- AC_REQUIRE([AC_C_INLINE])
- :
-])
+AC_DEFUN([gl_PREREQ_FFLUSH], [:])