[bpt/emacs.git] / m4 / ssize_t.m4

# ssize_t.m4 serial 5 (gettext-0.18.2)
dnl Copyright (C) 2001-2003, 2006, 2010-2014 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.

dnl From Bruno Haible.
dnl Test whether ssize_t is defined.

AC_DEFUN([gt_TYPE_SSIZE_T],
[
  AC_CACHE_CHECK([for ssize_t], [gt_cv_ssize_t],
    [AC_COMPILE_IFELSE(
       [AC_LANG_PROGRAM(
          [[#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
])
Commit	Line	Data
d1fdcab7	1	# ssize_t.m4 serial 5 (gettext-0.18.2)
ba318903	2	dnl Copyright (C) 2001-2003, 2006, 2010-2014 Free Software Foundation, Inc.
d1fdcab7 PE	3	dnl This file is free software; the Free Software Foundation
	4	dnl gives unlimited permission to copy and/or distribute it,
	5	dnl with or without modifications, as long as this notice is preserved.
	6
	7	dnl From Bruno Haible.
	8	dnl Test whether ssize_t is defined.
	9
	10	AC_DEFUN([gt_TYPE_SSIZE_T],
	11	[
	12	AC_CACHE_CHECK([for ssize_t], [gt_cv_ssize_t],
	13	[AC_COMPILE_IFELSE(
	14	[AC_LANG_PROGRAM(
	15	[[#include <sys/types.h>]],
	16	[[int x = sizeof (ssize_t *) + sizeof (ssize_t);
	17	return !x;]])],
	18	[gt_cv_ssize_t=yes], [gt_cv_ssize_t=no])])
	19	if test $gt_cv_ssize_t = no; then
	20	AC_DEFINE([ssize_t], [int],
	21	[Define as a signed type of the same size as size_t.])
	22	fi
	23	])