Question

I am currently developing a program in Qt and it uses the library libqextserialport.1.dylib.

I build it and run in x-code and it spits back:

dyld: Library not loaded: libqextserialport.1.dylib     Referenced from: /Users/samuelreh/Desktop/QtOpenCV/build/Debug/QtOpenCV.app/Contents/MacOS/QtOpenCV     Reason: image not found 

The library is located in /Users/samuelreh/Desktop/QtOpenCV/qextserialport/build/.

I can run my program by changing to the executable folder /Users/samuelreh/Desktop/QtOpenCV/build/Debug/QtOpenCV.app/Contents/MacOS/ and entering:

install_name_tool -change libqextserialport.1.dylib /Users/samuelreh/Desktop/QtOpenCV/qextserialport/build/libqextserialport.1.dylib QtOpenCV

I know there is probably many solutions besides this. Anybody know the best / most-elegant / easiest to do from x-code?

Answer 1

If I understand your problem correctly, your app is building fine, no errors when linking, but when you try to launch it the library cannot be found.

That’s not surprising, since the dylib file is in some arbitrary directory not on the system path. You either need to copy it into /usr/lib (probably not a good idea) or include it in the application bundle. The latter is probably the better approach.

I’ve never tried it, but apparently you need to use a Copy Files Build Phase to put the dylib inside your bundle and then configure Xcode so that your executable will know where to find it.