Xcode project setup for GLFW library reference problem.

Question

Hi,

I'm working on an assignment which is to simulate the beginning of the universe using C and OpenGL/GLFW.

I'm pretty new to C and also to Xcode, which is not helping at all. I've overcome my silly compilation problems and the code is finding GL/glfw.h ok. When I compile and run I receive a "Visualisation [name of the project] has exited with status 5".

I wasn't really sure what that meant but if I try and run the code from the command line I get the following error:

ADAM:Debug adam$ ./Visualisation 
dyld: Library not loaded: @executable_path/libglfw.dylib
Referenced from: /Users/adam/Documents/Programming/C/Visualisation/build/Debug/./Visualisation
Reason: image not found
Trace/BPT trap

I added libglfw.dylib to the project the same way I added libglfw.a to see if that fixed it and no, it didn't.

I can't figure out where @executable_path is set or what it is set to but inside the build settings for the project in Library Search Paths is "$(SRCROOT)/../../../../glfw/lib/macosx" which is where this library resides.

I checked that the library was executable and it is, do I need to set that library path somewhere else?

Thanks in advance.

Adam

Answer 1

The first thing I would like to say is that you need to read the Xcode manual, this question is answered there (and you may have other questions which will also be answered there).

To find the manual, launch Xcode and select "Xcode Workspace Guide" from the "Help" menu.

To answer the question, the application is looking for the library in the same directory as the application's executable. If I understand what you're doing, you've made a command-line application, the directory that contains Visualisation should also contain libglfw.dylib. @executable_path is /path/to/Visualisation.

If this was a typical application with a GUI interface, the path would probably be /path/to/VisualisationApplication.app/Contents/MacOS/Visualisation.