diff -Nru oops-1.5.23.orig/src/lib/rwlock/rwlock.c oops-1.5.23/src/lib/rwlock/rwlock.c
--- oops-1.5.23.orig/src/lib/rwlock/rwlock.c    2000-11-29 19:03:35.000000000 +0200
+++ oops-1.5.23/src/lib/rwlock/rwlock.c 2006-09-06 00:30:36.000000000 +0300
@@ -53,6 +53,8 @@
 #include <pthread.h>
 #include "rwlock.h"
 
+#if defined(OOPS_IMPLEMENT_RWLOCK)
+
 /* maximum number of times a read lock may be obtained */
 #define        MAX_READ_LOCKS          (INT_MAX - 1)
 
@@ -375,4 +377,6 @@
        return(0);
 }
 
+#endif /* defined(OOPS_IMPLEMENT_RWLOCK) */
+
 #endif /* _THREAD_SAFE || _PTHREADS || _REENTRANT */
diff -Nru oops-1.5.23.orig/src/lib/rwlock/rwlock.h oops-1.5.23/src/lib/rwlock/rwlock.h
--- oops-1.5.23.orig/src/lib/rwlock/rwlock.h    2003-10-06 17:15:40.000000000 +0300
+++ oops-1.5.23/src/lib/rwlock/rwlock.h 2006-09-06 00:29:46.000000000 +0300
@@ -53,6 +53,7 @@
 
 #if    !defined(PTHREAD_RWLOCK_INITIALIZER)
 #define        PTHREAD_RWLOCK_INITIALIZER      NULL
+#define OOPS_IMPLEMENT_RWLOCK 1
 
 struct pthread_rwlock {
        pthread_mutex_t lock;           /* monitor lock */