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-rw-r--r--src/mesa/glapi/glthread.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/src/mesa/glapi/glthread.h b/src/mesa/glapi/glthread.h
index 615d169986..291485dc20 100644
--- a/src/mesa/glapi/glthread.h
+++ b/src/mesa/glapi/glthread.h
@@ -64,9 +64,10 @@
#define GLTHREAD_H
-#if defined(PTHREADS) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || \
- defined(XTHREADS) || defined(BEOS_THREADS)
-#define THREADS
+#if (defined(PTHREADS) || defined(SOLARIS_THREADS) ||\
+ defined(WIN32_THREADS) || defined(XTHREADS) || defined(BEOS_THREADS)) \
+ && !defined(THREADS)
+# define THREADS
#endif
#ifdef VMS