macos - 如何定义要在 Mac OS X 上使用的库？

Question

我在运行程序时遇到问题，我感觉这是因为 Mac OS X 决定使用错误的库。我希望它使用 SDL_image，但我认为它选择使用 SDL-1.2。有没有办法强制它使用 SDL_image？如果有帮助的话，我正在尝试运行一个用 Go 程序语言编写的程序。

我已经尝试修改 DYLD_LIBRARY_PATH 变量，因为我怀疑 dyld 可能与它有关，但它没有用。我发现的与该问题相关的所有其他内容都只是错误日志，没有说明如何解决它。

objc[96907]: Class SDLTranslatorResponder is implemented in both /opt/local/lib/libSDL-1.2.0.dylib and /usr/local/lib/libSDL-1.3.0.dylib. One of the two will be used. Which one is undefined.
objc[96907]: Class SDLTranslatorResponder is implemented in both /opt/local/lib/libSDL-1.2.0.dylib and /usr/local/lib/libSDL_ttf-2.0.0.dylib. One of the two will be used. Which one is undefined.
objc[96907]: Class SDL_QuartzView is implemented in both /opt/local/lib/libSDL-1.2.0.dylib and /usr/local/lib/libSDL_ttf-2.0.0.dylib. One of the two will be used. Which one is undefined.
objc[96907]: Class SDL_QuartzWindowDelegate is implemented in both /opt/local/lib/libSDL-1.2.0.dylib and /usr/local/lib/libSDL_ttf-2.0.0.dylib. One of the two will be used. Which one is undefined.
objc[96907]: Class SDL_QuartzWindow is implemented in both /opt/local/lib/libSDL-1.2.0.dylib and /usr/local/lib/libSDL_ttf-2.0.0.dylib. One of the two will be used. Which one is undefined.
objc[96907]: Class SDLTranslatorResponder is implemented in both /opt/local/lib/libSDL-1.2.0.dylib and /usr/local/lib/libSDL_image-1.2.0.dylib. One of the two will be used. Which one is undefined.
objc[96907]: Class SDL_QuartzView is implemented in both /opt/local/lib/libSDL-1.2.0.dylib and /usr/local/lib/libSDL_image-1.2.0.dylib. One of the two will be used. Which one is undefined.
objc[96907]: Class SDL_QuartzWindowDelegate is implemented in both /opt/local/lib/libSDL-1.2.0.dylib and /usr/local/lib/libSDL_image-1.2.0.dylib. One of the two will be used. Which one is undefined.
objc[96907]: Class SDL_QuartzWindow is implemented in both /opt/local/lib/libSDL-1.2.0.dylib and /usr/local/lib/libSDL_image-1.2.0.dylib. One of the two will be used. Which one is undefined.

Answer 1

您是否尝试过在您的可执行文件上使用 install_name_tool -change 来使库引用具有绝对路径？

您也可以尝试使用 install_name_tool 更改可执行文件的 rpath 并删除/opt/local(如果存在)。或者，如果没有 rpath，您可以尝试添加/usr/local/lib 并更改库引用以使用 @rpath/(参见“man dyld”和“man install_name_tool”)

您也可以从 MacPorts 切换到 Homebrew那么您所有的开源软件都位于/usr/local 下，您就不会遇到此类问题。