Add 0 to _POSIX_SEMAPHORES. Will backport to 2.4.

8b8fb3db · Martin v. Löwis · 0f260547 · 8b8fb3db
Commit 8b8fb3db authored Mar 28, 2005 by Martin v. Löwis
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Python/thread_pthread.h Python/thread_pthread.h +3 -1

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--- a/Python/thread_pthread.h
+++ b/Python/thread_pthread.h
@@ -16,7 +16,9 @@
   family of functions must indicate this by defining
   _POSIX_SEMAPHORES. */   
 #ifdef _POSIX_SEMAPHORES
-#if _POSIX_SEMAPHORES == -1
+/* On FreeBSD 4.x, _POSIX_SEMAPHORES is defined empty, so 
+   we need to add 0 to make it work there as well. */
+#if (_POSIX_SEMAPHORES+0) == -1
 #define HAVE_BROKEN_POSIX_SEMAPHORES
 #else
 #include <semaphore.h>