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-rw-r--r--m4/ssize_t.m430
1 files changed, 22 insertions, 8 deletions
diff --git a/m4/ssize_t.m4 b/m4/ssize_t.m4
index 1c12c33..25b28d7 100644
--- a/m4/ssize_t.m4
+++ b/m4/ssize_t.m4
@@ -1,23 +1,37 @@
-# ssize_t.m4 serial 5 (gettext-0.18.2)
-dnl Copyright (C) 2001-2003, 2006, 2010-2023 Free Software Foundation, Inc.
+# ssize_t.m4 serial 6
+dnl Copyright (C) 2001-2003, 2006, 2010-2024 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.
+dnl Define ssize_t if it does not already exist.
AC_DEFUN([gt_TYPE_SSIZE_T],
[
- AC_CACHE_CHECK([for ssize_t], [gt_cv_ssize_t],
+ AC_CACHE_CHECK([for ssize_t], [gl_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.])
+ [gl_cv_ssize_t=yes], [gl_cv_ssize_t=no])])
+ if test $gl_cv_ssize_t = no; then
+ dnl On 64-bit native Windows, ssize_t needs to be defined as 'long long',
+ dnl for consistency with the 64-bit size_t.
+ AC_CACHE_CHECK([whether size_t is wider than 'long'], [gl_cv_size_t_large],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <sys/types.h>
+ typedef int array [2 * (sizeof (size_t) > sizeof (long)) - 1];
+ ]])],
+ [gl_cv_size_t_large=yes], [gl_cv_size_t_large=no])])
+ if test $gl_cv_size_t_large = yes; then
+ gl_def_ssize_t='long long'
+ else
+ gl_def_ssize_t='long'
+ fi
+ AC_DEFINE_UNQUOTED([ssize_t], [$gl_def_ssize_t],
+ [Define as a signed type of the same size as size_t.])
fi
])