diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index 0c903a19029..7cddf59343e 100755
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -58,6 +58,8 @@ check_symbol_exists(isnan math.h HAVE_ISNAN_IN_MATH_H)
 check_symbol_exists(ceilf math.h HAVE_CEILF)
 check_symbol_exists(floorf math.h HAVE_FLOORF)
 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(strtoll stdlib.h HAVE_STRTOLL)
 
diff --git a/include/llvm/Config/config.h.cmake b/include/llvm/Config/config.h.cmake
index caabf0779ab..ed77874b780 100644
--- a/include/llvm/Config/config.h.cmake
+++ b/include/llvm/Config/config.h.cmake
@@ -228,7 +228,7 @@
 #cmakedefine HAVE_MALLOC_MALLOC_H ${HAVE_MALLOC_MALLOC_H}
 
 /* Define to 1 if you have the `malloc_zone_statistics' function. */
-#undef HAVE_MALLOC_ZONE_STATISTICS
+#cmakedefine HAVE_MALLOC_ZONE_STATISTICS ${HAVE_MALLOC_ZONE_STATISTICS}
 
 /* Define to 1 if you have the `memcpy' function. */
 #undef HAVE_MEMCPY