Test for ssize_t. Needed for portability to mingw32.

diff --git a/ChangeLog b/ChangeLog
index 1270e04..4c14bfb 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2003-06-22  Bruno Haible  <bruno@clisp.org>
+
+       * modules/safe-read: Add m4/ssize_t.m4.
+       * modules/xreadlink: Add m4/ssize_t.m4.
+

 2003-06-11  Simon Josefsson  <jas@extundo.com>
 
        * modules/sysexits: New file.
 2003-06-11  Simon Josefsson  <jas@extundo.com>
 
        * modules/sysexits: New file.

diff --git a/m4/safe-read.m4 b/m4/safe-read.m4
index 8738634..deb01bc 100644 (file)
--- a/m4/safe-read.m4
+++ b/m4/safe-read.m4
@@ -1,5 +1,5 @@
-# safe-read.m4 serial 1
-dnl Copyright (C) 2002 Free Software Foundation, Inc.
+# safe-read.m4 serial 2
+dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.

 dnl This file is free software, distributed under the terms of the GNU
 dnl General Public License.  As a special exception to the GNU General
 dnl Public License, this file may be distributed as part of a program
 dnl This file is free software, distributed under the terms of the GNU
 dnl General Public License.  As a special exception to the GNU General
 dnl Public License, this file may be distributed as part of a program


@@ -14,5 +14,6 @@ AC_DEFUN([gl_SAFE_READ],
 # Prerequisites of lib/safe-read.c.
 AC_DEFUN([gl_PREREQ_SAFE_READ],
 [
 # Prerequisites of lib/safe-read.c.
 AC_DEFUN([gl_PREREQ_SAFE_READ],
 [

+  AC_REQUIRE([gt_TYPE_SSIZE_T])

   AC_CHECK_HEADERS_ONCE(unistd.h)
 ])
   AC_CHECK_HEADERS_ONCE(unistd.h)
 ])

diff --git a/m4/ssize_t.m4 b/m4/ssize_t.m4
new file mode 100644 (file)
index 0000000..708126b
--- /dev/null
+++ b/m4/ssize_t.m4
@@ -0,0 +1,26 @@
+# ssize_t.m4 serial 2 (gettext-0.12.2)
+dnl Copyright (C) 2001-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+dnl Test whether ssize_t is defined.
+
+AC_DEFUN([gt_TYPE_SSIZE_T],
+[
+  AC_CHECK_HEADERS_ONCE(unistd.h)
+  AC_CACHE_CHECK([for ssize_t], gt_cv_ssize_t,
+    [AC_TRY_COMPILE([
+#include <sys/types.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif], [int x = sizeof (ssize_t *) + sizeof (ssize_t);],
+       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
+])

diff --git a/m4/xreadlink.m4 b/m4/xreadlink.m4
index ca3bcef..25d04bb 100644 (file)
--- a/m4/xreadlink.m4
+++ b/m4/xreadlink.m4
@@ -1,4 +1,4 @@
-# xreadlink.m4 serial 2
+# xreadlink.m4 serial 3

 dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
 dnl This file is free software, distributed under the terms of the GNU
 dnl General Public License.  As a special exception to the GNU General
 dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
 dnl This file is free software, distributed under the terms of the GNU
 dnl General Public License.  As a special exception to the GNU General


@@ -9,5 +9,6 @@ dnl the same distribution terms as the rest of that program.
 AC_DEFUN([gl_XREADLINK],
 [
   dnl Prerequisites of lib/xreadlink.c.
 AC_DEFUN([gl_XREADLINK],
 [
   dnl Prerequisites of lib/xreadlink.c.

+  AC_REQUIRE([gt_TYPE_SSIZE_T])

   AC_CHECK_HEADERS_ONCE(stdlib.h sys/types.h unistd.h)
 ])
   AC_CHECK_HEADERS_ONCE(stdlib.h sys/types.h unistd.h)
 ])

diff --git a/modules/safe-read b/modules/safe-read
index 7211818..d57fd8e 100644 (file)
--- a/modules/safe-read
+++ b/modules/safe-read
@@ -5,6 +5,7 @@ Files:
 lib/safe-read.h
 lib/safe-read.c
 m4/safe-read.m4
 lib/safe-read.h
 lib/safe-read.c
 m4/safe-read.m4

+m4/ssize_t.m4

 
 Depends-on:
 
 
 Depends-on:
 

diff --git a/modules/xreadlink b/modules/xreadlink
index d3b825b..0d0e08e 100644 (file)
--- a/modules/xreadlink
+++ b/modules/xreadlink
@@ -5,6 +5,7 @@ Files:
 lib/xreadlink.h
 lib/xreadlink.c
 m4/xreadlink.m4
 lib/xreadlink.h
 lib/xreadlink.c
 m4/xreadlink.m4

+m4/ssize_t.m4

 
 Depends-on:
 xalloc
 
 Depends-on:
 xalloc