cmake_minimum_required(VERSION 3.5)

MESSAGE(STATUS "operation system is ${CMAKE_SYSTEM}")
MESSAGE(STATUS "root source directory is ${PROJECT_SOURCE_DIR}")
MESSAGE(STATUS "current source directory is ${CMAKE_CURRENT_SOURCE_DIR}")

set(CMAKE_CONFIGURATION_TYPES Debug Release)

# Determine the platform.
if ("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin")
    MESSAGE(STATUS "build on macOS...")
    set(OS_MACOS 1)
    set(OS_POSIX 1)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
    set(TP_EXTERNAL_RELEASE_DIR "${PROJECT_SOURCE_DIR}/external/macos/release")
    set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_SOURCE_DIR}/out/server/macos/bin")
    set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_SOURCE_DIR}/out/server/macos/bin")
elseif ("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
    MESSAGE(STATUS "build on Linux...")
    set(OS_LINUX 1)
    set(OS_POSIX 1)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
    set(TP_EXTERNAL_RELEASE_DIR "${PROJECT_SOURCE_DIR}/external/linux/release")
    set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_SOURCE_DIR}/out/server/linux/bin")
    set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_SOURCE_DIR}/out/server/linux/bin")
elseif ("${CMAKE_SYSTEM_NAME}" STREQUAL "Windows")
    MESSAGE(FATAL_ERROR "unsupported platform: Windows")
else ()
    MESSAGE(FATAL_ERROR "unsupported platform: ${CMAKE_SYSTEM_NAME}")
endif ()