Commit bb4d145b authored by Jeremy Huddleston's avatar Jeremy Huddleston

glx: Silence warnings when building with clang

This replaces AX_TLS (GPL3) with XORG_TLS (MIT)

In file included from glapi.c:46:
In file included from ./glapi.h:51:
./glthread.h:237:20: error: unknown attribute 'tls_model' ignored [-Werror,-Wunknown-attributes]
    __attribute__((tls_model("initial-exec")));
                   ^
In file included from glapi.c:46:
./glapi.h:92:20: error: unknown attribute 'tls_model' ignored [-Werror,-Wunknown-attributes]
    __attribute__((tls_model("initial-exec")));
                   ^
glapi.c:82:20: error: unknown attribute 'tls_model' ignored [-Werror,-Wunknown-attributes]
    __attribute__((tls_model("initial-exec"))) = NULL;
                   ^
glapi.c:85:20: error: unknown attribute 'tls_model' ignored [-Werror,-Wunknown-attributes]
    __attribute__((tls_model("initial-exec")));
                   ^
4 errors generated.
Signed-off-by: default avatarJeremy Huddleston <jeremyhu@apple.com>
Tested-by: default avatarJamey Sharp <jamey@minilop.net>
Acked-by: default avatarAlan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: default avatarIan Romanick <ian.d.romanick@intel.com>
parent 5c9eafc8
......@@ -587,7 +587,7 @@ dnl GLX build options
AC_ARG_ENABLE(aiglx, AS_HELP_STRING([--enable-aiglx], [Build accelerated indirect GLX (default: enabled)]),
[AIGLX=$enableval],
[AIGLX=yes])
AX_TLS
XORG_TLS
AC_ARG_ENABLE(glx-tls, AS_HELP_STRING([--enable-glx-tls], [Build GLX with TLS support (default: auto)]),
[GLX_USE_TLS=$enableval
if test "x$GLX_USE_TLS" = "xyes" && test "${ac_cv_tls}" = "none" ; then
......
......@@ -78,11 +78,9 @@ static void init_glapi_relocs(void);
/*@{*/
#if defined(GLX_USE_TLS)
PUBLIC TLS struct _glapi_table * _glapi_tls_Dispatch
__attribute__((tls_model("initial-exec"))) = NULL;
PUBLIC TLS struct _glapi_table * _glapi_tls_Dispatch = NULL;
PUBLIC TLS void * _glapi_tls_Context
__attribute__((tls_model("initial-exec")));
PUBLIC TLS void * _glapi_tls_Context;
PUBLIC const struct _glapi_table *_glapi_Dispatch = NULL;
PUBLIC const void *_glapi_Context = NULL;
......
......@@ -83,8 +83,7 @@ typedef void (*_glapi_warning_func)(void *ctx, const char *str, ...);
const extern void *_glapi_Context;
const extern struct _glapi_table *_glapi_Dispatch;
extern TLS void * _glapi_tls_Context
__attribute__((tls_model("initial-exec")));
extern TLS void * _glapi_tls_Context;
# define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) _glapi_tls_Context
......
......@@ -233,8 +233,7 @@ _glthread_SetTSD(_glthread_TSD *, void *);
#if defined(GLX_USE_TLS)
extern TLS struct _glapi_table * _glapi_tls_Dispatch
__attribute__((tls_model("initial-exec")));
extern TLS struct _glapi_table * _glapi_tls_Dispatch;
#define GET_DISPATCH() _glapi_tls_Dispatch
......
......@@ -447,7 +447,7 @@
/* Define to 1 if you have the `ffs' function. */
#undef HAVE_FFS
/* If the compiler supports a TLS storage class define it to that here */
/* The compiler supported TLS storage class, prefering initial-exec if tls_model is supported */
#undef TLS
/* Correctly set _XSERVER64 for OSX fat binaries */
......
# ===========================================================================
# 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)
])
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
])
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