xcode dyld 未加载原因：找不到图像 libopencv_core.2.4.dylib

dyld not loaded Reason: image not found libopencv_core.2.4.dylib

提问by kava

I'm still quite new to Objective C and Xcode, but I just finished a small app that uses the openCV libopencv_core.2.4.2.dylib.

我对 Objective C 和 Xcode 还是很陌生，但我刚刚完成了一个使用 openCV 的小应用程序libopencv_core.2.4.2.dylib。

When I went to open the final built app on another machine, OS X threw me this error:

当我在另一台机器上打开最终构建的应用程序时，OS X 向我抛出了这个错误：

Dyld Error Message:   Library not loaded: */libopencv_core.2.4.dylib  
Referenced from: /Users/USER/Desktop/my
app.app/Contents/MacOS/my app   
Reason: image not found

Why is my app looking for 2.4 instead of 2.4.2 here?

为什么我的应用在这里寻找 2.4 而不是 2.4.2？

What I already checked:

我已经检查过的：

I added a new build phase -> so that libopencv_core.2.4.2.dylibis copied to the app package (via "Copy Bundle Resources" in Xcode) - libopencv_core.2.4.2.dylibnow lies in my app.app/Resources

我添加了一个新的构建阶段 -> 以便将libopencv_core.2.4.2.dylib其复制到应用程序包（通过 Xcode 中的“复制捆绑资源”） -libopencv_core.2.4.2.dylib现在位于我的app.app/Resources

What did I miss? Do I have so set some more library search paths or similar?

我错过了什么？我是否设置了更多库搜索路径或类似路径？

What I also did:

我还做了什么：

install_name_tool -id "@executable_path/../Frameworks/libopencv_core.2.4.2.dylib" libopencv_core.2.4.2.dylib

Copying the dylib to the Frameworks directory doesn't work either:

将 dylib 复制到 Frameworks 目录也不起作用：

Library not loaded: @executable_path/../Frameworks/libopencv_core.2.4.2.dylib

Don't know what to do now - the dylib isin the Frameworks directory of my app...

不知道现在该做什么-在dylib是在我的应用程序的框架目录...

Using otool -Lon the binary gives me:

otool -L在二进制文件上使用给了我：

/System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa (compatibility version 1.0.0, current version 19.0.0)
    @loader_path/../Frameworks/libopencv_core.2.4.2.dylib (compatibility version 2.4.0, current version 2.4.2)
    @loader_path/../Frameworks/libopencv_highgui.2.4.2.dylib (compatibility version 2.4.0, current version 2.4.2)
    @loader_path/../Frameworks/libopencv_imgproc.2.4.2.dylib (compatibility version 2.4.0, current version 2.4.2)
    /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation (compatibility version 300.0.0, current version 945.11.0)
    /usr/lib/libobjc.A.dylib (compatibility version 1.0.0, current version 228.0.0)
    /usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 56.0.0)
    /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 169.3.0)
    /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 744.1.0)
    /System/Library/Frameworks/CoreData.framework/Versions/A/CoreData (compatibility version 1.0.0, current version 407.7.0)
    /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit (compatibility version 45.0.0, current version 1187.33.0)

采纳答案by kava

I found a better solution: recompiling openCV in Xcode and set the @executable_path/../Frameworksin the build settings, for every .dylib you compile - now the .dylibsthemselves always "know where they are".

我找到了一个更好的解决方案：在 Xcode 中重新编译 openCV 并@executable_path/../Frameworks在构建设置中设置，对于您编译的每个 .dylib - 现在.dylibs它们自己总是“知道它们在哪里”。

回答by kunalg

I had the same problem. i keep all .dylib in system root directory usr/libit working fine. At the run time .o file not get .dylib file path then it gives an error.

我有同样的问题。我将所有 .dylib 保存在系统根目录usr/lib 中，它工作正常。在运行时 .o 文件没有得到 .dylib 文件路径然后它给出一个错误。

回答by Halil Kaskavalci

Since other answers are not clear enough;

由于其他答案不够清楚；

Assume your dylib files are located in /usr/local/opt/opencv3/lib

假设您的 dylib 文件位于 /usr/local/opt/opencv3/lib

sudo ln -s /usr/local/opt/opencv3/lib/*.dylib /usr/local/lib

will solve this problem. Be aware that /usr/libis protected by system in MacOS, thus you should use /usr/local/lib.

将解决这个问题。请注意，/usr/lib在 MacOS 中受系统保护，因此您应该使用/usr/local/lib.