cmake: Add mini-SDL2 CMake project to test SDL2 prefixes

This commit is contained in:
Anonymous Maarten 2022-06-03 20:07:43 +02:00 committed by Sam Lantinga
parent 67792767f5
commit 9ff8f29f43
3 changed files with 133 additions and 0 deletions

91
cmake/test/CMakeLists.txt Normal file
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# This cmake build script is meant for verifying the various CMake configuration script.
cmake_minimum_required(VERSION 3.12)
project(sdl_test LANGUAGES C)
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_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()
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)
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)

14
cmake/test/main_cli.c Normal file
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#define SDL_MAIN_HANDLED
#include "SDL.h"
#include <stdio.h>
int main(int argc, char *argv[]) {
SDL_SetMainReady();
if (SDL_Init(0) < 0) {
fprintf(stderr, "could not initialize sdl2: %s\n", SDL_GetError());
return 1;
}
SDL_Delay(100);
SDL_Quit();
return 0;
}

28
cmake/test/main_gui.c Normal file
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#include "SDL.h"
#include <stdio.h>
int main(int argc, char *argv[]) {
SDL_Window *window = NULL;
SDL_Surface *screenSurface = NULL;
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
fprintf(stderr, "could not initialize sdl2: %s\n", SDL_GetError());
return 1;
}
window = SDL_CreateWindow(
"hello_sdl2",
SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
640, 480,
SDL_WINDOW_SHOWN
);
if (window == NULL) {
fprintf(stderr, "could not create window: %s\n", SDL_GetError());
return 1;
}
screenSurface = SDL_GetWindowSurface(window);
SDL_FillRect(screenSurface, NULL, SDL_MapRGB(screenSurface->format, 0xff, 0xff, 0xff));
SDL_UpdateWindowSurface(window);
SDL_Delay(100);
SDL_DestroyWindow(window);
SDL_Quit();
return 0;
}