Question

我一直在试图弄清为什么CMake没有添加SDL2的静态库。如果我在可执行文件旁边添加SDL2.dll文件，则它确实可以工作。

它运行良好，可以轻松方便地找到标题。

我的CMakeList.txt看起来像这样。相信我，我已经尝试了一切，但显然我做错了。

cmake_minimum_required(VERSION 3.7)
set (CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
set (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})

SET(SDL2_DIR ./lib)

project(SDL2Test)

find_package(SDL2 REQUIRED)
include_directories(SDL2Test ${SDL2_INCLUDE_DIRS})

add_executable(SDL2Test Main.cpp)
target_link_libraries(SDL2Test ${SDL2_LIBRARIES})

这是sdl2-config.cmake：

set(SDL2_INCLUDE_DIRS "${CMAKE_CURRENT_LIST_DIR}/../include")

# Support both 32 and 64 bit builds
if (${CMAKE_SIZEOF_VOID_P} MATCHES 8)
    set(SDL2_LIBRARIES "${CMAKE_CURRENT_LIST_DIR}/x64/SDL2.lib;${CMAKE_CURRENT_LIST_DIR}/x64/SDL2main.lib")
else ()
    set(SDL2_LIBRARIES "${CMAKE_CURRENT_LIST_DIR}/x86/SDL2.lib;${CMAKE_CURRENT_LIST_DIR}/x86/SDL2main.lib")
endif ()

string(STRIP "${SDL2_LIBRARIES}" SDL2_LIBRARIES)

这是Main.cpp

#include "SDL.h"

using namespace std;

int main(int argc, char *argv[])
{
    SDL_Init(SDL_INIT_VIDEO);

    SDL_Window *window = SDL_CreateWindow(
            "SDL2Test",
            SDL_WINDOWPOS_UNDEFINED,
            SDL_WINDOWPOS_UNDEFINED,
            640,
            480,
            0
    );

    SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_SOFTWARE);
    SDL_SetRenderDrawColor(renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
    SDL_RenderClear(renderer);
    SDL_RenderPresent(renderer);

    SDL_Delay(3000);

    SDL_DestroyWindow(window);
    SDL_Quit();

    return 0;
}

Answer 1

您的SDL2.lib是导入库，在运行时需要随附的DLL。

要使用静态库（一个与EXE完全链接并且不需要DLL的库），您将需要自己构建SDL2.lib的静态版本。

请记住，这是discouraged by the author of SDL

可执行文件找不到SDL2.dll

1 个答案: