use weak symbols for the POSIX functions that will be used by C threads

The intent of this is to avoid name space pollution of the C threads
implementation.

This has two sides to it. First we have to provide symbols that wouldn't
pollute the name space for the C threads implementation. Second we have
to clean up some internal uses of POSIX functions such that they don't
implicitly drag in such symbols.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/thread/pthread_once.c b/src/thread/pthread_once.c
index 2eb0f932..05ebe69c 100644
--- a/src/thread/pthread_once.c
+++ b/src/thread/pthread_once.c
@@ -6,7 +6,7 @@ static void undo(void *control)
 	__wake(control, 1, 1);
 }
 
-int pthread_once(pthread_once_t *control, void (*init)(void))
+int __pthread_once(pthread_once_t *control, void (*init)(void))
 {
 	static int waiters;
 
@@ -34,3 +34,5 @@ int pthread_once(pthread_once_t *control, void (*init)(void))
 		return 0;
 	}
 }
+
+weak_alias(__pthread_once, pthread_once);