我对编程比较陌生,我决定试试SDL,但我有点卡住了.我无法在代码块中构建项目,并且我得到了所有SDL函数的"未定义引用".我在这里看到了很多类似的问题,但没有一个解决方案似乎有所帮助.我已将\ include\SDL2和\ lib文件夹添加到搜索目录中,我已将SDL2Main和SDL2添加到链接器选项中的链接库,我甚至将-mwindows添加到其他链接器选项.此外,我尝试连接64位版本,但事情变得更糟.
这是我的源代码,几乎完全复制了我开始的教程:
#includeSDL_Window* g_pWindow = 0; SDL_Renderer* g_pRenderer = 0; int main(int argc, char* args[]) { // initialize SDL if(SDL_Init(SDL_INIT_EVERYTHING) >= 0) { // if succeeded create our window g_pWindow = SDL_CreateWindow("Chapter 1: Setting up SDL", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 640, 480, SDL_WINDOW_SHOWN); // if the window creation succeeded create our renderer if(g_pWindow != 0) { g_pRenderer = SDL_CreateRenderer(g_pWindow, -1, 0); } } else { return 1; // sdl could not initialize } // everything succeeded lets draw the window // set to black // This function expects Red, Green, Blue and // Alpha as color values SDL_SetRenderDrawColor(g_pRenderer, 0, 0, 0, 255); // clear the window to black SDL_RenderClear(g_pRenderer); // show the window SDL_RenderPresent(g_pRenderer); // set a delay before quitting SDL_Delay(5000); // clean up SDL SDL_Quit(); return 0; }
这是构建日志:
mingw32-g++.exe -LC:\dev\sdl\SDL2-2.0.1\x86_64-w64-mingw32\lib -o bin\Debug\GeometryProject.exe obj\Debug\main.o -mwindows C:\MinGW\lib\libmingw32.a C:\dev\sdl\SDL2-2.0.1\x86_64-w64-mingw32\lib\libSDL2main.a C:\dev\sdl\SDL2-2.0.1\x86_64-w64-mingw32\lib\libSDL2.a obj\Debug\main.o: In function `SDL_main': C:/Users/Kris948/Desktop/ProjectsUni/GeometryProject/main.cpp:7: undefined reference to `SDL_Init' C:/Users/Kris948/Desktop/ProjectsUni/GeometryProject/main.cpp:13: undefined reference to `SDL_CreateWindow' C:/Users/Kris948/Desktop/ProjectsUni/GeometryProject/main.cpp:17: undefined reference to `SDL_CreateRenderer' C:/Users/Kris948/Desktop/ProjectsUni/GeometryProject/main.cpp:27: undefined reference to `SDL_SetRenderDrawColor' C:/Users/Kris948/Desktop/ProjectsUni/GeometryProject/main.cpp:29: undefined reference to `SDL_RenderClear' C:/Users/Kris948/Desktop/ProjectsUni/GeometryProject/main.cpp:31: undefined reference to `SDL_RenderPresent' C:/Users/Kris948/Desktop/ProjectsUni/GeometryProject/main.cpp:33: undefined reference to `SDL_Delay' C:/Users/Kris948/Desktop/ProjectsUni/GeometryProject/main.cpp:35: undefined reference to `SDL_Quit' C:\MinGW\lib\libmingw32.a(main.o):main.c:(.text.startup+0xa7): undefined reference to `WinMain@16' collect2.exe: error: ld returned 1 exit status Process terminated with status 1 (0 minutes, 0 seconds) 9 errors, 0 warnings (0 minutes, 0 seconds)
还有什么我可以尝试的吗?我真的很想让这个运行,并希望得到任何帮助.
可能的问题是您链接到SDL2库以获得不同的体系结构.
你应该使用
SDL2-2.0.1\i686-w64-mingw32
代替
SDL2-2.0.1\x86_64-w64-mingw32
此外,在设置库搜索路径后,使用此表示法链接到库
-lmingw32 -lSDL2main -lSDL2
它更容易阅读.