From: Stefan Metzmacher <metze@samba.org>
Date: Wed, 18 Jul 2018 06:44:48 +0000 (+0200)
Subject: lib/replace: check for __thread support
X-Git-Tag: ldb-1.5.0~235
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ebb5847defce888c3177d6564a3d7dcc0ed47e4;p=thirdparty%2Fsamba.git

lib/replace: check for __thread support

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
---

diff --git a/lib/replace/wscript b/lib/replace/wscript
index fd00a42d5b6..02d98c59e47 100644
--- a/lib/replace/wscript
+++ b/lib/replace/wscript
@@ -551,6 +551,18 @@ def configure(conf):
              conf.CONFIG_SET('HAVE_PTHREAD_MUTEX_CONSISTENT_NP'))):
             conf.DEFINE('HAVE_ROBUST_MUTEXES', 1)
 
+    # __thread is available since 2002 in gcc.
+    conf.CHECK_CODE('''
+        __thread int tls;
+
+        int main(void) {
+            return 0;
+        }
+        ''',
+        'HAVE___THREAD',
+        addmain=False,
+        msg='Checking for __thread local storage')
+
     conf.CHECK_FUNCS_IN('crypt', 'crypt', checklibc=True)
     conf.CHECK_FUNCS_IN('crypt_r', 'crypt', checklibc=True)