Document that _POSIX_SEMAPHORES is predefined.

42ab61ee · Martin v. Löwis · cc89866b · 42ab61ee
Commit 42ab61ee authored Mar 17, 2002 by Martin v. Löwis
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Python/thread_pthread.h Python/thread_pthread.h +4 -0

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--- a/Python/thread_pthread.h
+++ b/Python/thread_pthread.h
@@ -11,6 +11,10 @@
 #undef destructor
 #endif
 #include <signal.h>
+
+/* The POSIX spec says that implementations supporting the sem_*
+   family of functions must indicate this by defining
+   _POSIX_SEMAPHORES. */   
 #ifdef _POSIX_SEMAPHORES
 #include <semaphore.h>
 #include <errno.h>