kc3-lang/SDL/cmake/test/CMakeLists.txt

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• Hash : 3b20e0ec
  Author :
  Date : 2022-09-19T02:38:36
  

  cmake: only add -Wl,--undefined=WinMain when building an executable
  

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• cmake/test/CMakeLists.txt

• # This cmake build script is meant for verifying the various CMake configuration script.
  
  cmake_minimum_required(VERSION 3.12)
  project(sdl_test LANGUAGES C)
  
  include(GenerateExportHeader)
  
  if(ANDROID)
      macro(add_executable NAME)
          set(args ${ARGN})
          list(REMOVE_ITEM args WIN32)
          add_library(${NAME} SHARED ${args})
          unset(args)
      endmacro()
  endif()
  
  cmake_policy(SET CMP0074 NEW)
  
  # Override CMAKE_FIND_ROOT_PATH_MODE to allow search for SDL2 outside of sysroot
  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE NEVER)
  
  include(FeatureSummary)
  
  option(TEST_SHARED "Test linking to shared SDL2 library" ON)
  add_feature_info("TEST_SHARED" TEST_SHARED "Test linking with shared library")
  
  option(TEST_STATIC "Test linking to static SDL2 libary" ON)
  add_feature_info("TEST_STATIC" TEST_STATIC "Test linking with static library")
  
  if(TEST_SHARED)
      find_package(SDL2 REQUIRED CONFIG COMPONENTS SDL2)
      if(EMSCRIPTEN OR (WIN32 AND NOT WINDOWS_STORE))
          find_package(SDL2 REQUIRED CONFIG COMPONENTS SDL2main)
      endif()
      add_executable(gui-shared WIN32 main_gui.c)
      if(TARGET SDL2::SDL2main)
          target_link_libraries(gui-shared PRIVATE SDL2::SDL2main)
      endif()
      target_link_libraries(gui-shared PRIVATE SDL2::SDL2)
      if(WIN32)
          add_custom_command(TARGET gui-shared POST_BUILD
              COMMAND ${CMAKE_COMMAND} -E copy_if_different "$<TARGET_FILE:SDL2::SDL2>" "$<TARGET_FILE_DIR:gui-shared>"
          )
      endif()
  
      add_library(sharedlib-shared SHARED main_lib.c)
      target_link_libraries(sharedlib-shared PRIVATE SDL2::SDL2)
      generate_export_header(sharedlib-shared EXPORT_MACRO_NAME MYLIBRARY_EXPORT)
      target_compile_definitions(sharedlib-shared PRIVATE "EXPORT_HEADER=\"${CMAKE_CURRENT_BINARY_DIR}/sharedlib-shared_export.h\"")
      set_target_properties(sharedlib-shared PROPERTIES C_VISIBILITY_PRESET "hidden")
  
      add_executable(gui-shared-vars WIN32 main_gui.c)
      target_link_libraries(gui-shared-vars PRIVATE ${SDL2_LIBRARIES})
      target_include_directories(gui-shared-vars PRIVATE ${SDL2_INCLUDE_DIRS})
  
      add_executable(cli-shared main_cli.c)
      target_link_libraries(cli-shared PRIVATE SDL2::SDL2)
      if(WIN32)
          add_custom_command(TARGET cli-shared POST_BUILD
              COMMAND ${CMAKE_COMMAND} -E copy_if_different "$<TARGET_FILE:SDL2::SDL2>" "$<TARGET_FILE_DIR:cli-shared>"
          )
      endif()
  
      # SDL2_LIBRARIES does not support creating a cli SDL2 application
      # (it is possible that SDL2main is a stub, but we don't know for sure)
      if(NOT TARGET SDL2::SDL2main)
          add_executable(cli-shared-vars main_cli.c)
          target_link_libraries(cli-shared-vars PRIVATE ${SDL2_LIBRARIES})
          target_include_directories(cli-shared-vars PRIVATE ${SDL2_INCLUDE_DIRS})
      endif()
  
      add_library(sharedlib-shared-vars SHARED main_lib.c)
      target_link_libraries(sharedlib-shared-vars PRIVATE ${SDL2_LIBRARIES})
      target_include_directories(sharedlib-shared-vars PRIVATE ${SDL2_INCLUDE_DIRS})
      generate_export_header(sharedlib-shared-vars EXPORT_MACRO_NAME MYLIBRARY_EXPORT)
      target_compile_definitions(sharedlib-shared-vars PRIVATE "EXPORT_HEADER=\"${CMAKE_CURRENT_BINARY_DIR}/sharedlib-shared-vars_export.h\"")
      set_target_properties(sharedlib-shared-vars PROPERTIES C_VISIBILITY_PRESET "hidden")
  endif()
  
  if(TEST_STATIC)
      find_package(SDL2 REQUIRED CONFIG COMPONENTS SDL2-static)
      if(EMSCRIPTEN OR (WIN32 AND NOT WINDOWS_STORE))
          find_package(SDL2 REQUIRED CONFIG COMPONENTS SDL2main)
      endif()
      add_executable(gui-static WIN32 main_gui.c)
      if(TARGET SDL2::SDL2main)
          target_link_libraries(gui-static PRIVATE SDL2::SDL2main)
      endif()
      target_link_libraries(gui-static PRIVATE SDL2::SDL2-static)
  
      option(SDL_STATIC_PIC "SDL static library has been built with PIC")
      if(SDL_STATIC_PIC OR WIN32)
          add_library(sharedlib-static SHARED main_lib.c)
          target_link_libraries(sharedlib-static PRIVATE SDL2::SDL2-static)
          generate_export_header(sharedlib-static EXPORT_MACRO_NAME MYLIBRARY_EXPORT)
          target_compile_definitions(sharedlib-static PRIVATE "EXPORT_HEADER=\"${CMAKE_CURRENT_BINARY_DIR}/sharedlib-static_export.h\"")
          set_target_properties(sharedlib-static PROPERTIES C_VISIBILITY_PRESET "hidden")
      endif()
  
      add_executable(gui-static-vars WIN32 main_gui.c)
      target_link_libraries(gui-static-vars PRIVATE ${SDL2MAIN_LIBRARY} ${SDL2_STATIC_LIBRARIES})
      target_include_directories(gui-static-vars PRIVATE ${SDL2_INCLUDE_DIRS})
  
      add_executable(cli-static main_cli.c)
      target_link_libraries(cli-static PRIVATE SDL2::SDL2-static)
  
      # SDL2_LIBRARIES does not support creating a cli SDL2 application (when SDL2::SDL2main is available)
      # (it is possible that SDL2main is a stub, but we don't know for sure)
      if(NOT TARGET SDL2::SDL2main)
          add_executable(cli-static-vars main_cli.c)
          target_link_libraries(cli-static-vars PRIVATE ${SDL2_STATIC_LIBRARIES})
          target_include_directories(cli-static-vars PRIVATE ${SDL2_INCLUDE_DIRS})
      endif()
  endif()
  
  message(STATUS "SDL2_PREFIX:            ${SDL2_PREFIX}")
  message(STATUS "SDL2_INCLUDE_DIR:       ${SDL2_INCLUDE_DIR}")
  message(STATUS "SDL2_INCLUDE_DIRS:      ${SDL2_INCLUDE_DIRS}")
  message(STATUS "SDL2_LIBRARIES:         ${SDL2_LIBRARIES}")
  message(STATUS "SDL2_STATIC_LIBRARIES:  ${SDL2_STATIC_LIBRARIES}")
  message(STATUS "SDL2MAIN_LIBRARY:       ${SDL2MAIN_LIBRARY}")
  message(STATUS "SDL2TEST_LIBRARY:       ${SDL2TEST_LIBRARY}")
  
  feature_summary(WHAT ALL)
  

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