IAPDemo/Libraries/cocos2d/external/cmake/CocosExternalConfig.cmake

# set friendly platform define
 if(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
     set(WINDOWS TRUE)
     set(SYSTEM_STRING "Windows Desktop")
 elseif(${CMAKE_SYSTEM_NAME} MATCHES "Android")
     set(SYSTEM_STRING "Android")
 elseif(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
     if(ANDROID)
         set(SYSTEM_STRING "Android")
     else()
         set(LINUX TRUE)
         set(SYSTEM_STRING "Linux")
     endif()
 elseif(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
     if(IOS)
         set(APPLE TRUE)
         set(SYSTEM_STRING "IOS")
     else()
         set(APPLE TRUE)
         set(MACOSX TRUE)
         set(SYSTEM_STRING "Mac OSX")
     endif()
 endif()

# set platform specific path
set(_path_prefix ${CMAKE_CURRENT_SOURCE_DIR}/prebuilt/)
if(IOS)
    set(platform_name ios)
    set(platform_spec_path ios)
elseif(ANDROID)
    set(platform_name android)
    set(platform_spec_path android/${ANDROID_ABI})
elseif(WINDOWS)
    set(platform_name win32)
    set(platform_spec_path win32)
elseif(MACOSX)
    set(platform_name mac)
    set(platform_spec_path mac)
elseif(LINUX)
    set(platform_name linux)
    set(platform_spec_path linux/64-bit)
endif()

set(platform_spec_path "${_path_prefix}${platform_spec_path}")