Triangle (SDL2) on Windows (MSVC + CMake + Ninja)

CMakeLists.txt

cmake_minimum_required(VERSION 3.25)

### Debug mode
# $ cmake -S . -B build-debug -GNinja -DCMAKE_BUILD_TYPE=Debug
# $ cmake --build build-debug
# $ cmake --install build-debug # SDL2.dllをコピー
# $ cmake --build build-debug && build-debug\game.exe

### Release mode
# $ cmake -S . -B build-release -GNinja -DCMAKE_BUILD_TYPE=Release
# $ cmake --build build-release
# $ cmake --install build-debug
# $ cmake --build build-release && build-release\game.exe

project(game LANGUAGES CXX)

# if(${CMAKE_BUILD_TYPE} MATCHES "Release")
#   set(WINMAIN WIN32)
# else()
#   set(WINMAIN "")
# endif()
#
# add_executable(${PROJECT_NAME} ${WINMAIN}
#   src/main.cpp
#   )

# set (SDL2_DIR "${PROJECT_SOURCE_DIR}/deps/SDL2-2.28.5/lib/cmake/SDL2")
set (SDL2_DIR "${PROJECT_SOURCE_DIR}/deps/SDL2-2.28.5/cmake")

find_package(SDL2 CONFIG REQUIRED)

add_executable(${PROJECT_NAME}
  # WIN32
  src/main.cc
  )

set_property (TARGET ${PROJECT_NAME} PROPERTY CXX_STANDARD 17)

target_compile_options(${PROJECT_NAME}
  PRIVATE $<$<CXX_COMPILER_ID:MSVC>:/utf-8>
  /permissive-
  /W4
)

# if(${CMAKE_BUILD_TYPE} MATCHES "Release")
#   set_target_properties(${PROJECT_NAME} PROPERTIES
#     LINK_FLAGS "/ENTRY:mainCRTStartup")
# endif()

set(INCS
  PRIVATE ${SDL2_INCLUDE_DIRS}
  # PUBLIC ${CMAKE_SOURCE_DIR}/deps/SDL2-2.28.5/include
  )
target_include_directories(${PROJECT_NAME} ${INCS})

set(LIBS
  ${SDL2_LIBRARIES} 
  # ${CMAKE_SOURCE_DIR}/deps/SDL2-2.28.5/lib/x64/SDL2.lib
  # ${CMAKE_SOURCE_DIR}/deps/SDL2-2.28.5/lib/x64/SDL2main.lib
  # SDL2main
  # user32.lib
  # gdi32.lib
  # winmm.lib
  # opengl32.lib
  )
target_link_libraries(${PROJECT_NAME} ${LIBS})

install(FILES ${PROJECT_SOURCE_DIR}/deps/SDL2-2.28.5/lib/x64/SDL2.dll DESTINATION ${CMAKE_BINARY_DIR})

# include(CMakePrintHelpers)
# cmake_print_variables(CMAKE_BINARY_DIR)
# cmake_print_variables(PROJECT_SOURCE_DIR)

main.cc

// #include <iostream>

#include "SDL.h"

int main(int argc, char** argv)
{
  (void) argc;
  (void) argv;

    SDL_Init(SDL_INIT_EVERYTHING);
    SDL_Window* window = SDL_CreateWindow(
            "SDL / テスト", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 800, 600, SDL_WINDOW_SHOWN);
    SDL_Renderer* renderer = SDL_CreateRenderer(
            window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);

    SDL_Vertex vertex_1 = {{400, 150}, {255, 0, 0, 255}, {0, 0}};
    SDL_Vertex vertex_2 = {{200, 450}, {0, 0, 255, 255}, {0, 0}};
    SDL_Vertex vertex_3 = {{600, 450}, {0, 255, 0, 255}, {0, 0}};

    SDL_Vertex vertices[] = {
        vertex_1,
        vertex_2,
        vertex_3
    };

    bool running = true;
    while(running)
    {
        SDL_Event ev;
        while(SDL_PollEvent(&ev))
        {
            if((SDL_QUIT == ev.type) ||
                    (SDL_KEYDOWN == ev.type && SDL_SCANCODE_ESCAPE == ev.key.keysym.scancode))
            {
                running = false;
                break;
            }
        }

        SDL_SetRenderDrawColor(renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
        SDL_RenderClear(renderer);
        SDL_RenderGeometry(renderer, NULL, vertices, 3, NULL, 0);
        SDL_RenderPresent(renderer);
    }

    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();

    return 0;
}