if(${CMAKE_SYSTEM_NAME} STREQUAL "Emscripten")

     set(EMSCRIPTEN 1)

 endif()

 if(MSVC)

     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4")

     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W4")

     add_definitions(-D_CRT_SECURE_NO_WARNINGS)

 else()

     add_definitions(-Wall)

     if(EMSCRIPTEN)

         string(REGEX REPLACE "-O3" "-Os" CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}")

         string(REGEX REPLACE "-O3" "-Os" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")

     else()

         string(REGEX REPLACE "-O3" "-O2" CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}")

         string(REGEX REPLACE "-O3" "-O2" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")

     endif()

     set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -fno-omit-frame-pointer")

     set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fno-omit-frame-pointer")

 endif()

 if(NOT CMAKE_BUILD_TYPE)

     set(CMAKE_BUILD_TYPE "Release")

 endif()

 string(TOLOWER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE_LOWER)

 if(CMAKE_BUILD_TYPE_LOWER STREQUAL "release")

     add_definitions(-DNDEBUG)

 endif()

 # Prevent shared libraries has "lib" prefix on Windows DLL files

 if(WIN32)

     set(CMAKE_SHARED_LIBRARY_PREFIX "")

 endif()