Fix build against libpthread

* Makefile (LDFLAGS): Replace -lthreads with -lpthread.
* cache.c: Use pthread functions instead of cthreads functions.
* cache.h: Likewise.
* debug.c: Likewise.
* netfs.c: Likewise.
* tarfs.c: Likewise.
* tarfs.h: Likewise.
* tarlist.c: Likewise.
* zipstores.c: Likewise.

1 files changed, 1 insertions, 1 deletions

diff --git a/cache.h b/cache.h
index 781f2cb52..0c3659ea8 100644
--- a/cache.h
+++ b/cache.h
@@ -46,7 +46,7 @@ struct cache
   size_t size;
 
   /* Lock of this cache */
-  struct mutex lock;
+  pthread_mutex_t lock;
 };
 
 /* Initializes the cache backend.  READ is the method that will be called