From 49fb919fbc88160aa4c3ddbae65f073c53b2d475 Mon Sep 17 00:00:00 2001
From: Thomas Krijnen <t.krijnen@gmail.com>
Date: Fri, 9 Aug 2019 10:05:49 +0200
Subject: [PATCH] thread_local define for clang

---
 src/ifcparse/IfcParse.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/ifcparse/IfcParse.h b/src/ifcparse/IfcParse.h
index 83b10f0796..4dc960c31f 100644
--- a/src/ifcparse/IfcParse.h
+++ b/src/ifcparse/IfcParse.h
@@ -49,8 +49,9 @@
 
 #include "../ifcparse/IfcSpfStream.h"
 
- /* gcc doesn't know _Thread_local from C11 yet */
-#ifdef __GNUC__
+#if defined(__clang__)
+# define my_thread_local thread_local
+#elif defined(__GNUC__)
 # define my_thread_local __thread
 #elif __STDC_VERSION__ >= 201112L
 # define my_thread_local _Thread_local