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-rw-r--r--xorg-server/m4/ax_tls.m474
-rw-r--r--xorg-server/m4/xorg-tls.m457
2 files changed, 57 insertions, 74 deletions
diff --git a/xorg-server/m4/ax_tls.m4 b/xorg-server/m4/ax_tls.m4
deleted file mode 100644
index 481c3d0c8..000000000
--- a/xorg-server/m4/ax_tls.m4
+++ /dev/null
@@ -1,74 +0,0 @@
-# ===========================================================================
-# http://www.nongnu.org/autoconf-archive/ax_tls.html
-# ===========================================================================
-#
-# SYNOPSIS
-#
-# AX_TLS
-#
-# DESCRIPTION
-#
-# Provides a test for the compiler support of thread local storage (TLS)
-# extensions. Defines TLS if it is found. Currently only knows about GCC
-# and MSVC. I think SunPro uses the same as GCC, and Borland apparently
-# supports either.
-#
-# LICENSE
-#
-# Copyright (c) 2008 Alan Woodland <ajw05@aber.ac.uk>
-#
-# This program is free software: you can redistribute it and/or modify it
-# under the terms of the GNU General Public License as published by the
-# Free Software Foundation, either version 3 of the License, or (at your
-# option) any later version.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
-# Public License for more details.
-#
-# You should have received a copy of the GNU General Public License along
-# with this program. If not, see <http://www.gnu.org/licenses/>.
-#
-# As a special exception, the respective Autoconf Macro's copyright owner
-# gives unlimited permission to copy, distribute and modify the configure
-# scripts that are the output of Autoconf when processing the Macro. You
-# need not follow the terms of the GNU General Public License when using
-# or distributing such scripts, even though portions of the text of the
-# Macro appear in them. The GNU General Public License (GPL) does govern
-# all other use of the material that constitutes the Autoconf Macro.
-#
-# This special exception to the GPL applies to versions of the Autoconf
-# Macro released by the Autoconf Archive. When you make and distribute a
-# modified version of the Autoconf Macro, you may extend this special
-# exception to the GPL to apply to your modified version as well.
-
-AC_DEFUN([AX_TLS], [
- AC_MSG_CHECKING(for thread local storage (TLS) class)
- AC_CACHE_VAL(ac_cv_tls, [
- ax_tls_keywords="__thread __declspec(thread) none"
- for ax_tls_keyword in $ax_tls_keywords; do
- case $ax_tls_keyword in
- none) ac_cv_tls=none ; break ;;
- *)
- AC_TRY_COMPILE(
- [#include <stdlib.h>
- static void
- foo(void) {
- static ] $ax_tls_keyword [ int bar;
- exit(1);
- }],
- [],
- [ac_cv_tls=$ax_tls_keyword ; break],
- ac_cv_tls=none
- )
- esac
- done
-])
-
- if test "$ac_cv_tls" != "none"; then
- dnl AC_DEFINE([TLS], [], [If the compiler supports a TLS storage class define it to that here])
- AC_DEFINE_UNQUOTED([TLS], $ac_cv_tls, [If the compiler supports a TLS storage class define it to that here])
- fi
- AC_MSG_RESULT($ac_cv_tls)
-])
diff --git a/xorg-server/m4/xorg-tls.m4 b/xorg-server/m4/xorg-tls.m4
new file mode 100644
index 000000000..563850420
--- /dev/null
+++ b/xorg-server/m4/xorg-tls.m4
@@ -0,0 +1,57 @@
+dnl Copyright © 2011 Apple Inc.
+dnl
+dnl Permission is hereby granted, free of charge, to any person obtaining a
+dnl copy of this software and associated documentation files (the "Software"),
+dnl to deal in the Software without restriction, including without limitation
+dnl the rights to use, copy, modify, merge, publish, distribute, sublicense,
+dnl and/or sell copies of the Software, and to permit persons to whom the
+dnl Software is furnished to do so, subject to the following conditions:
+dnl
+dnl The above copyright notice and this permission notice (including the next
+dnl paragraph) shall be included in all copies or substantial portions of the
+dnl Software.
+dnl
+dnl THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+dnl IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+dnl FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+dnl THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+dnl LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+dnl FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+dnl DEALINGS IN THE SOFTWARE.
+dnl
+dnl Authors: Jeremy Huddleston <jeremyhu@apple.com>
+
+AC_DEFUN([XORG_TLS], [
+ AC_MSG_CHECKING(for thread local storage (TLS) support)
+ AC_CACHE_VAL(ac_cv_tls, [
+ ac_cv_tls=none
+ keywords="__thread __declspec(thread)"
+ for kw in $keywords ; do
+ AC_TRY_COMPILE([int $kw test;], [], ac_cv_tls=$kw)
+ done
+ ])
+ AC_MSG_RESULT($ac_cv_tls)
+
+ if test "$ac_cv_tls" != "none"; then
+ AC_MSG_CHECKING(for tls_model attribute support)
+ AC_CACHE_VAL(ac_cv_tls_model, [
+ save_CFLAGS="$CFLAGS"
+ dnl -Werror causes clang's default -Wunknown-attributes to become an error
+ dnl We can't use -Werror=unknown-attributes because gcc doesn't understand it
+ dnl -Werror=attributes is for gcc, clang seems to ignore it
+ CFLAGS="$CFLAGS -Werror -Werror=attributes"
+ AC_TRY_COMPILE([int $ac_cv_tls __attribute__((tls_model("initial-exec"))) test;], [],
+ ac_cv_tls_model=yes, ac_cv_tls_model=no)
+ CFLAGS="$save_CFLAGS"
+ ])
+ AC_MSG_RESULT($ac_cv_tls_model)
+
+ if test "x$ac_cv_tls_model" = "xyes" ; then
+ xorg_tls=$ac_cv_tls' __attribute__((tls_model("initial-exec")))'
+ else
+ xorg_tls=$ac_cv_tls
+ fi
+
+ AC_DEFINE_UNQUOTED([TLS], $xorg_tls, [The compiler supported TLS storage class, prefering initial-exec if tls_model is supported])
+ fi
+])