--- src/github.com/cockroachdb/cockroach/c-deps/rocksdb/CMakeLists.txt.orig	2019-04-12 18:43:38 UTC
+++ src/github.com/cockroachdb/cockroach/c-deps/rocksdb/CMakeLists.txt
@@ -209,7 +209,7 @@ if(HAVE_THREAD_LOCAL)
   add_definitions(-DROCKSDB_SUPPORT_THREAD_LOCAL)
 endif()
 
-option(FAIL_ON_WARNINGS "Treat compile warnings as errors" ON)
+option(FAIL_ON_WARNINGS "Treat compile warnings as errors" OFF)
 if(FAIL_ON_WARNINGS)
   if(MSVC)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /WX")