From 81efe20cd74cefd805b68a99a45248cbf4914212 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Mon, 13 Feb 2017 06:45:40 +0100
Subject: atomic: remove __atomic builtin usage

Using these was a temporary solution while some compilers implemented
the underlying atomic mechanisms, but not the C11 language parts (or
that's what I guess). Not really useful for us anymore. Also, there is
the slight risk of having subtly incorrect semantics by using
potentially changing compiler internals and such.
---
 wscript | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

(limited to 'wscript')

diff --git a/wscript b/wscript
index e660ff7003..aefa6dd82b 100644
--- a/wscript
+++ b/wscript
@@ -170,20 +170,12 @@ main_dependencies = [
             check_statement('stdatomic.h',
                 'atomic_int_least64_t test = ATOMIC_VAR_INIT(123);'
                 'atomic_fetch_add(&test, 1)'))
-    }, {
-        'name': 'atomic-builtins',
-        'desc': 'compiler support for __atomic built-ins',
-        'func': check_libs(['atomic'],
-            check_statement('stdint.h',
-                'int64_t test = 0;'
-                'test = __atomic_add_fetch(&test, 1, __ATOMIC_SEQ_CST)')),
-        'deps_neg': [ 'stdatomic' ],
     }, {
         'name': 'atomics',
-        'desc': 'stdatomic.h support or emulation',
+        'desc': 'stdatomic.h support or slow emulation',
         'func': check_true,
         'req': True,
-        'deps_any': ['stdatomic', 'atomic-builtins', 'gnuc'],
+        'deps_any': ['stdatomic', 'gnuc'],
     }, {
         'name': 'c11-tls',
         'desc': 'C11 TLS support',
-- 
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