-#serial 1
+# ssize_t.m4 serial 4 (gettext-0.15)
+dnl Copyright (C) 2001-2003, 2006, 2009-2010 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_PREREQ(2.14a)
+dnl From Bruno Haible.
+dnl Test whether ssize_t is defined.
-dnl This is a specialization of AC_CHECK_TYPE applied to `ssize_t' with
-dnl the difference that it also includes unistd.h on systems that have it.
-dnl On Fujitsu UXP/V systems ssize_t is defined in unistd.h.
-AC_DEFUN(AC_TYPE_SSIZE_T,
- [
- AC_CHECK_HEADERS(unistd.h)
- AC_CHECK_TYPE(ssize_t, int,
- [
-#include <sys/types.h>
-#if STDC_HEADERS
-# include <stdlib.h>
-# include <stddef.h>
-#endif
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
- ]
- )
- ]
-)
+AC_DEFUN([gt_TYPE_SSIZE_T],
+[
+ AC_CACHE_CHECK([for ssize_t], [gt_cv_ssize_t],
+ [AC_TRY_COMPILE([#include <sys/types.h>],
+ [int x = sizeof (ssize_t *) + sizeof (ssize_t);
+ return !x;],
+ [gt_cv_ssize_t=yes], [gt_cv_ssize_t=no])])
+ if test $gt_cv_ssize_t = no; then
+ AC_DEFINE([ssize_t], [int],
+ [Define as a signed type of the same size as size_t.])
+ fi
+])