diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index c460fa2aa05..61161ed63bb 100755
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -64,6 +64,8 @@ check_symbol_exists(mallinfo malloc.h HAVE_MALLINFO)
 check_symbol_exists(malloc_zone_statistics malloc/malloc.h
                     HAVE_MALLOC_ZONE_STATISTICS)
 check_symbol_exists(pthread_mutex_lock pthread.h HAVE_PTHREAD_MUTEX_LOCK)
+check_symbol_exists(pthread_rwlock_init pthread.h HAVE_PTHREAD_RWLOCK_INIT)
+check_symbol_exists(pthread_getspecific pthread.h HAVE_PTHREAD_GETSPECIFIC)
 check_symbol_exists(strtoll stdlib.h HAVE_STRTOLL)
 
 check_symbol_exists(__GLIBC__ stdio.h LLVM_USING_GLIBC)
diff --git a/include/llvm/Config/config.h.cmake b/include/llvm/Config/config.h.cmake
index 4356e7dc145..27ef4402230 100644
--- a/include/llvm/Config/config.h.cmake
+++ b/include/llvm/Config/config.h.cmake
@@ -282,6 +282,12 @@
 /* Have pthread_mutex_lock */
 #cmakedefine HAVE_PTHREAD_MUTEX_LOCK ${HAVE_PTHREAD_MUTEX_LOCK}
 
+/* Have pthread_rwlock_init */
+#cmakedefine HAVE_PTHREAD_RWLOCK_INIT ${HAVE_PTHREAD_RWLOCK_INIT}
+
+/* Have pthread_getspecific */
+#cmakedefine HAVE_PTHREAD_GETSPECIFIC ${HAVE_PTHREAD_GETSPECIFIC}
+
 /* Define to 1 if srand48/lrand48/drand48 exist in <stdlib.h> */
 #undef HAVE_RAND48