【发布时间】:2021-05-02 10:53:08
【问题描述】:
我正在尝试在屏幕上显示图像,因此我安装了 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
我尝试过运行brew upgrade libpng 和brew update,但都没有成功。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, 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, 0, 0, 0, 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
【问题讨论】:
-
您可能需要直接下载、构建和安装 libpng -- brew 可能没有足够新的副本。
-
只使用 jpg 图像 - 这对我来说是最简单的解决方案。