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laumaya / GLC_lib

GLC_lib is a C++ library for high performance 3D application based on OpenGL and Qt4 GUI
http://www.glc-lib.net
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Mac OS X: embed the libraries in the bundle #40

Closed nraynaud closed 1 year ago

nraynaud commented 1 year ago

I made a change so that the .dylib files can be embedded and found in the app bundle. Basically the library is renamed @rpath/libGLC_lib.3.dylib, then the executable file is told that @rpath is a relative path.

after change:

$ otool -L example01.app/Contents/MacOS/example01 
example01.app/Contents/MacOS/example01:
    @rpath/libGLC_lib.3.dylib (compatibility version 3.0.0, current version 3.0.0)
    /usr/local/opt/qt@5/lib/QtOpenGL.framework/Versions/5/QtOpenGL (compatibility version 5.15.0, current version 5.15.7)
    /usr/local/opt/qt@5/lib/QtWidgets.framework/Versions/5/QtWidgets (compatibility version 5.15.0, current version 5.15.7)
    /usr/local/opt/qt@5/lib/QtGui.framework/Versions/5/QtGui (compatibility version 5.15.0, current version 5.15.7)
    /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit (compatibility version 45.0.0, current version 2299.30.112)
    /System/Library/Frameworks/Metal.framework/Versions/A/Metal (compatibility version 1.0.0, current version 306.3.4)
    /usr/local/opt/qt@5/lib/QtCore.framework/Versions/5/QtCore (compatibility version 5.15.0, current version 5.15.7)
    /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration (compatibility version 1.0.0, current version 1.0.0)
    /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit (compatibility version 1.0.0, current version 275.0.0)
    /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL (compatibility version 1.0.0, current version 1.0.0)
    /System/Library/Frameworks/AGL.framework/Versions/A/AGL (compatibility version 1.0.0, current version 1.0.0)
    /usr/lib/libc++.1.dylib (compatibility version 1.0.0, current version 1300.36.0)
    /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1319.0.0)
$ otool -l example01.app/Contents/MacOS/example01  
(..snip...)
Load command 25
          cmd LC_RPATH
      cmdsize 48
         path @executable_path/../Frameworks (offset 12)
(..snip...)

some background information is available here: https://www.mikeash.com/pyblog/friday-qa-2009-11-06-linking-and-install-names.html