Windows/ARM64 - fix build with clang-cl

Author: vaintroub

cmake/os/Windows.cmake

@@ -174,10 +174,9 @@ if(MSVC)
       -Wno-unused-local-typedef
       -Wno-microsoft-static-assert
       -Wno-c++17-extensions
-      -msse4.2
     )
     if((CMAKE_SIZEOF_VOID_P MATCHES 8) AND MSVC_INTEL)
-      add_compile_options(-mpclmul)
+      add_compile_options(-mpclmul -msse4.2)
     endif()
   endif()
 

mysys/CMakeLists.txt

@@ -69,6 +69,13 @@ IF(MSVC_INTEL)
 ELSEIF(MSVC_ARM64)
   SET (MYSYS_SOURCES ${MYSYS_SOURCES} crc32/crc32_arm64.c)
   ADD_DEFINITIONS(-DHAVE_ARMV8_CRC -DHAVE_ARMV8_CRC_CRYPTO_INTRINSICS)
+  IF(CLANG_CL)
+    SET_SOURCE_FILES_PROPERTIES(
+      crc32/crc32_arm64.c
+      PROPERTIES
+      COMPILE_FLAGS "-march=armv8-a+crc"
+  )
+  ENDIF()
 ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64|amd64|i386|i686")
   SET(MYSYS_SOURCES ${MYSYS_SOURCES} crc32/crc32_x86.c crc32/crc32c_x86.cc)
   IF(CMAKE_COMPILER_IS_GNUCC AND CMAKE_C_COMPILER_VERSION VERSION_LESS "5")