From a90b3862d921ebaeaf3c998cd742e883d2d4af04 Mon Sep 17 00:00:00 2001
From: Vladislav Vaintroub <wlad@mariadb.com>
Date: Wed, 1 Aug 2018 12:41:50 +0100
Subject: [PATCH] MDEV-16860 MyRocks: support CRC32 instructions on Winx64

Compile on Windows MSVC with -DHAVE_SSE2 and -DHAVE_PCLMUL

It is safe, since code will do also runtime checks via cpuid(), before
using the instructions, and will fallback to slower versions,
if instructions are not available.
---
 storage/rocksdb/build_rocksdb.cmake | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/storage/rocksdb/build_rocksdb.cmake b/storage/rocksdb/build_rocksdb.cmake
index 8f01024be63..0f1b77e255d 100644
--- a/storage/rocksdb/build_rocksdb.cmake
+++ b/storage/rocksdb/build_rocksdb.cmake
@@ -376,7 +376,9 @@ SET(SOURCES)
 FOREACH(s ${ROCKSDB_SOURCES})
   list(APPEND SOURCES ${ROCKSDB_SOURCE_DIR}/${s})
 ENDFOREACH()
-
+IF(MSVC)
+  add_definitions(-DHAVE_SSE42 -DHAVE_PCLMUL)
+ENDIF()
 IF(CMAKE_VERSION VERSION_GREATER "2.8.10")
   STRING(TIMESTAMP GIT_DATE_TIME "%Y-%m-%d %H:%M:%S")
 ENDIF()