dyld: Library not loaded: lib/libopencv_core.3.0.dylib Reason: image not found

Question

I am getting the following issue:

/Users/luke/Desktop/trainHOG/trainhog ; exit; dyld: Library not loaded: lib/libopencv_core.3.0.dylib Referenced from: /Users/luke/Desktop/trainHOG/trainhog Reason: image not found Trace/BPT trap: 5 logout

I am using a Mac running OSX v10.9.5 with openCV 3.0 alpha.

The library in question is definitely in the folder. I have tried deleting it and pasting it back into the folder, I have completely deleted and reinstalled openCV and macports, and I have tried the export DYLD_LIBRARY_PATH = "path to dynamic libs here..", but nothing has worked. I have even rebooted my computer on several occasions!

Does anyone have any further suggestions? I am out of ideas

Answer 1

If you use

export DYLD_LIBRARY_PATH = "path to dynamic libs here.."

is it applied to the environment of your program? You can check the environment variables of a running process with

ps -p <pid> -wwwE

Does this help?

Answer 2

If you are having this Problem:

dyld: Library not loaded: *.dylib ... Reason: no suitable image found.

Means your *.dylib files are not signed with your Apple iD develop account, and There is two ways to solve that:

1) The right way: Code sign all your files with errors with this command:

codesign -f -s "Mac Developer: YOURDEVELOPEREMAIL" /usr/local/opt/*/lib/*.dylib

2) The temporary way(until you don't deploy to App Store): Inside Xcode, go to:

[YourProjectFile] --> [YourTargetFile] --> "Signing & Capabilities" --> and Enable "Disable Library Validation"

Done :D

Answer 3

Seems to be a bug in some versions of OpenCV's CMake configuration files which incorrectly record relative paths in the installed dylibs, reasonably easy to fix.

This answer on answers.opencv.org addresses the issue. In OpenCVModule.cmake and every instance of CMakeLists.txt replace INSTALL_NAME_DIR lib with INSTALL_NAME_DIR ${CMAKE_INSTALL_PREFIX}/lib.

Answer 4

OpenCV 3.3 OSX 10.13 fist have a test, you can use clang++ -o a -I ./include -L ./lib -lopencv_core.your.version then you can generate executable file a ,run it ,if have the error massage. you will find the error reason cannot find the lib when you are link.

if you want to solve error on terminal you can use export DYLD_LIBRARY_PATH=your/lib:$DYLD_LIBRARY_PATH if you want to solve error on Xcode in build page , go to "Runpath Search Paths" add you lib path