可执行文件找不到 SDL2.dll

Question

我一直在试图弄清楚为什么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，那么它确实有效。

它构建得很好，可以很容易地找到标题。

错误

我的CMakeList.txt是这样的。相信我，我什么都试过了，但很明显我做错了。

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，需要在运行时附带DLL。

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

请记住，SDL 的作者不鼓励这样做