问题描述
我想在屏幕上显示图像,所以我安装了 SDL2 图像。我可以成功编译我的代码,但是当我尝试运行生成的可执行文件时,它给了我这个错误:
dyld: Library not loaded: /usr/local/opt/libpng/lib/libpng16.16.dylib
Referenced from: /usr/local/opt/sdl2_image/lib/libSDL2_image-2.0.0.dylib
Reason: Incompatible library version: libSDL2_image-2.0.0.dylib requires version 54.0.0 or later,but libpng16.16.dylib provides version 51.0.0
我试过运行 brew upgrade libpng
和 brew update
,但都没有奏效。我不确定我能做些什么来解决这个问题。
如果有帮助,这是我使用的代码。
在 main.cpp 中:
#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>
#include <iostream>
#undef main
int main(int argc,char** args)
{
SDL_Init(SDL_INIT_EVERYTHING);
IMG_Init(IMG_INIT_PNG);
SDL_Window* window = SDL_CreateWindow("Getting Started",SDL_WINDOWPOS_UNDEFINED,800,600,SDL_WINDOW_SHOWN);
SDL_Renderer* renderer = SDL_CreateRenderer(window,-1,0);
SDL_Event input;
bool quit = false;
SDL_Texture* texture = NULL;
SDL_Surface* temp = IMG_Load("some_image.png");
texture = SDL_CreateTextureFromSurface(renderer,temp);
SDL_FreeSurface(temp);
SDL_Rect rect;
rect.x = 0;
rect.y = 500;
rect.w = 100;
rect.h = 100;
while (!quit) {
while (SDL_PollEvent(&input) > 0) {
if (input.type == SDL_QUIT) quit = true;
}
SDL_SetRenderDrawColor(renderer,255);
SDL_RenderClear(renderer);
SDL_Rendercopy(renderer,texture,NULL,&rect);
SDL_RenderPresent(renderer);
}
SDL_DestroyTexture(texture);
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
IMG_Quit();
SDL_Quit();
return 0;
}
在 Makefile 中:
main:
g++ main.cpp -o image -I include -L lib -l SDL2-2.0.0 -l SDL2_image-2.0.0
解决方法
我设法通过删除 /usr/local/Cellar
中的 libpng 文件夹并使用 brew install libpng
重新安装它来解决此问题。