fix utf-8 option for MSVC

Author: Judd

cmake/build-info.cmake

@@ -42,7 +42,8 @@ endif()
 if(MSVC)
     set(BUILD_COMPILER "${CMAKE_C_COMPILER_ID} ${CMAKE_C_COMPILER_VERSION}")
     set(BUILD_TARGET ${CMAKE_VS_PLATFORM_NAME})
-    add_compile_options("/utf-8")
+    add_compile_options("$<$<COMPILE_LANGUAGE:C>:/utf-8>")
+    add_compile_options("$<$<COMPILE_LANGUAGE:CXX>:/utf-8>")
 else()
     execute_process(
         COMMAND sh -c "$@ --version | head -1" _ ${CMAKE_C_COMPILER}