Some systems lack the helper, so ship a local copy of it.
Pulled from Mesa, just like many other parts of virgl.
Fixes: 6564d1395c ("virglrenderer: enable symbol visiblity.")
Review-by: Jakob Bornecrantz <jakob@collabora.com>
Reported-by: Elie Tournier <elie.tournier@collabora.com>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Jakob Bornecrantz <jakob@collabora.com>
macos/master
Emil Velikov
6 years ago
committed by
Jakob Bornecrantz
parent
ee9d6c2548
commit
061c854de8
@ -0,0 +1,230 @@ |
||||
# =========================================================================== |
||||
# http://www.gnu.org/software/autoconf-archive/ax_gcc_func_attribute.html |
||||
# =========================================================================== |
||||
# |
||||
# SYNOPSIS |
||||
# |
||||
# AX_GCC_FUNC_ATTRIBUTE(ATTRIBUTE) |
||||
# |
||||
# DESCRIPTION |
||||
# |
||||
# This macro checks if the compiler supports one of GCC's function |
||||
# attributes; many other compilers also provide function attributes with |
||||
# the same syntax. Compiler warnings are used to detect supported |
||||
# attributes as unsupported ones are ignored by default so quieting |
||||
# warnings when using this macro will yield false positives. |
||||
# |
||||
# The ATTRIBUTE parameter holds the name of the attribute to be checked. |
||||
# |
||||
# If ATTRIBUTE is supported define HAVE_FUNC_ATTRIBUTE_<ATTRIBUTE>. |
||||
# |
||||
# The macro caches its result in the ax_cv_have_func_attribute_<attribute> |
||||
# variable. |
||||
# |
||||
# The macro currently supports the following function attributes: |
||||
# |
||||
# alias |
||||
# aligned |
||||
# alloc_size |
||||
# always_inline |
||||
# artificial |
||||
# cold |
||||
# const |
||||
# constructor |
||||
# deprecated |
||||
# destructor |
||||
# dllexport |
||||
# dllimport |
||||
# error |
||||
# externally_visible |
||||
# flatten |
||||
# format |
||||
# format_arg |
||||
# gnu_inline |
||||
# hot |
||||
# ifunc |
||||
# leaf |
||||
# malloc |
||||
# noclone |
||||
# noinline |
||||
# nonnull |
||||
# noreturn |
||||
# nothrow |
||||
# optimize |
||||
# packed |
||||
# pure |
||||
# returns_nonnull |
||||
# unused |
||||
# used |
||||
# visibility |
||||
# warning |
||||
# warn_unused_result |
||||
# weak |
||||
# weakref |
||||
# |
||||
# Unsuppored function attributes will be tested with a prototype returning |
||||
# an int and not accepting any arguments and the result of the check might |
||||
# be wrong or meaningless so use with care. |
||||
# |
||||
# LICENSE |
||||
# |
||||
# Copyright (c) 2013 Gabriele Svelto <gabriele.svelto@gmail.com> |
||||
# |
||||
# Copying and distribution of this file, with or without modification, are |
||||
# permitted in any medium without royalty provided the copyright notice |
||||
# and this notice are preserved. This file is offered as-is, without any |
||||
# warranty. |
||||
|
||||
#serial 2 |
||||
|
||||
# mattst88: |
||||
# Added support for returns_nonnull attribute |
||||
|
||||
AC_DEFUN([AX_GCC_FUNC_ATTRIBUTE], [ |
||||
AS_VAR_PUSHDEF([ac_var], [ax_cv_have_func_attribute_$1]) |
||||
|
||||
AC_CACHE_CHECK([for __attribute__(($1))], [ac_var], [ |
||||
AC_LINK_IFELSE([AC_LANG_PROGRAM([ |
||||
m4_case([$1], |
||||
[alias], [ |
||||
int foo( void ) { return 0; } |
||||
int bar( void ) __attribute__(($1("foo"))); |
||||
], |
||||
[aligned], [ |
||||
int foo( void ) __attribute__(($1(32))); |
||||
], |
||||
[alloc_size], [ |
||||
void *foo(int a) __attribute__(($1(1))); |
||||
], |
||||
[always_inline], [ |
||||
inline __attribute__(($1)) int foo( void ) { return 0; } |
||||
], |
||||
[artificial], [ |
||||
inline __attribute__(($1)) int foo( void ) { return 0; } |
||||
], |
||||
[cold], [ |
||||
int foo( void ) __attribute__(($1)); |
||||
], |
||||
[const], [ |
||||
int foo( void ) __attribute__(($1)); |
||||
], |
||||
[constructor], [ |
||||
int foo( void ) __attribute__(($1)); |
||||
], |
||||
[deprecated], [ |
||||
int foo( void ) __attribute__(($1(""))); |
||||
], |
||||
[destructor], [ |
||||
int foo( void ) __attribute__(($1)); |
||||
], |
||||
[dllexport], [ |
||||
__attribute__(($1)) int foo( void ) { return 0; } |
||||
], |
||||
[dllimport], [ |
||||
int foo( void ) __attribute__(($1)); |
||||
], |
||||
[error], [ |
||||
int foo( void ) __attribute__(($1(""))); |
||||
], |
||||
[externally_visible], [ |
||||
int foo( void ) __attribute__(($1)); |
||||
], |
||||
[flatten], [ |
||||
int foo( void ) __attribute__(($1)); |
||||
], |
||||
[format], [ |
||||
int foo(const char *p, ...) __attribute__(($1(printf, 1, 2))); |
||||
], |
||||
[format_arg], [ |
||||
char *foo(const char *p) __attribute__(($1(1))); |
||||
], |
||||
[gnu_inline], [ |
||||
inline __attribute__(($1)) int foo( void ) { return 0; } |
||||
], |
||||
[hot], [ |
||||
int foo( void ) __attribute__(($1)); |
||||
], |
||||
[ifunc], [ |
||||
int my_foo( void ) { return 0; } |
||||
static int (*resolve_foo(void))(void) { return my_foo; } |
||||
int foo( void ) __attribute__(($1("resolve_foo"))); |
||||
], |
||||
[leaf], [ |
||||
__attribute__(($1)) int foo( void ) { return 0; } |
||||
], |
||||
[malloc], [ |
||||
void *foo( void ) __attribute__(($1)); |
||||
], |
||||
[noclone], [ |
||||
int foo( void ) __attribute__(($1)); |
||||
], |
||||
[noinline], [ |
||||
__attribute__(($1)) int foo( void ) { return 0; } |
||||
], |
||||
[nonnull], [ |
||||
int foo(char *p) __attribute__(($1(1))); |
||||
], |
||||
[noreturn], [ |
||||
void foo( void ) __attribute__(($1)); |
||||
], |
||||
[nothrow], [ |
||||
int foo( void ) __attribute__(($1)); |
||||
], |
||||
[optimize], [ |
||||
__attribute__(($1(3))) int foo( void ) { return 0; } |
||||
], |
||||
[packed], [ |
||||
struct __attribute__(($1)) foo { int bar; }; |
||||
], |
||||
[pure], [ |
||||
int foo( void ) __attribute__(($1)); |
||||
], |
||||
[returns_nonnull], [ |
||||
int *foo( void ) __attribute__(($1)); |
||||
], |
||||
[unused], [ |
||||
int foo( void ) __attribute__(($1)); |
||||
], |
||||
[used], [ |
||||
int foo( void ) __attribute__(($1)); |
||||
], |
||||
[visibility], [ |
||||
int foo_def( void ) __attribute__(($1("default"))); |
||||
int foo_hid( void ) __attribute__(($1("hidden"))); |
||||
int foo_int( void ) __attribute__(($1("internal"))); |
||||
int foo_pro( void ) __attribute__(($1("protected"))); |
||||
], |
||||
[warning], [ |
||||
int foo( void ) __attribute__(($1(""))); |
||||
], |
||||
[warn_unused_result], [ |
||||
int foo( void ) __attribute__(($1)); |
||||
], |
||||
[weak], [ |
||||
int foo( void ) __attribute__(($1)); |
||||
], |
||||
[weakref], [ |
||||
static int foo( void ) { return 0; } |
||||
static int bar( void ) __attribute__(($1("foo"))); |
||||
], |
||||
[ |
||||
m4_warn([syntax], [Unsupported attribute $1, the test may fail]) |
||||
int foo( void ) __attribute__(($1)); |
||||
] |
||||
)], []) |
||||
], |
||||
dnl GCC doesn't exit with an error if an unknown attribute is |
||||
dnl provided but only outputs a warning, so accept the attribute |
||||
dnl only if no warning were issued. |
||||
[AS_IF([test -s conftest.err], |
||||
[AS_VAR_SET([ac_var], [no])], |
||||
[AS_VAR_SET([ac_var], [yes])])], |
||||
[AS_VAR_SET([ac_var], [no])]) |
||||
]) |
||||
|
||||
AS_IF([test yes = AS_VAR_GET([ac_var])], |
||||
[AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_FUNC_ATTRIBUTE_$1), 1, |
||||
[Define to 1 if the system has the `$1' function attribute])], []) |
||||
|
||||
AS_VAR_POPDEF([ac_var]) |
||||
]) |
||||
Loading…
Reference in new issue