[CMake] fixup_bundle & already-fixed-up dependencies

[Nikolay Kasyanov]

Hi,
I'm trying to use fixup_bundle on OS X.
I had following problem with some of my dependencies (Ogre game engine & OIS): they already have @executable_path in it (so, they already fixed up), so in my executable there is no absolute path to library, so fixup_bundle cannot find & copy Ogre's framework into bundle during fixup.

Here is otool output for Ogre.framework:
otool -L /Library/Frameworks/Ogre.framework/Versions/1.7.3/Ogre
/Library/Frameworks/Ogre.framework/Versions/1.7.3/Ogre:
	@executable_path/../Frameworks/Ogre.framework/Versions/1.7.3/Ogre (compatibility version 0.0.0, current version 1.7.3)
	/System/Library/Frameworks/Carbon.framework/Versions/A/Carbon (compatibility version 2.0.0, current version 152.0.0)
	/System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa (compatibility version 1.0.0, current version 15.0.0)
	/usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.3)
	/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.9.0)
	/usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 832.0.0)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.0)
	/usr/lib/libobjc.A.dylib (compatibility version 1.0.0, current version 227.0.0)
	/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 550.29.0)
	/System/Library/Frameworks/Foundation.framework/Versions/C/Foundation (compatibility version 300.0.0, current version 751.29.0)
	/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit (compatibility version 45.0.0, current version 1038.32.0)

Here is otool output for my executable:
otool -L OpenMW.app/Contents/MacOS/openmw 
OpenMW.app/Contents/MacOS/openmw:
	@executable_path/../Frameworks/Ogre.framework/Versions/1.7.3/Ogre (compatibility version 0.0.0, current version 1.7.3)
	@executable_path/../Frameworks/OIS.framework/Versions/A/OIS (compatibility version 1.0.0, current version 1.0.0)
	/System/Library/Frameworks/OpenAL.framework/Versions/A/OpenAL (compatibility version 1.0.0, current version 1.0.0)
	/System/Library/Frameworks/Carbon.framework/Versions/A/Carbon (compatibility version 2.0.0, current version 152.0.0)
	/usr/X11/lib/libfreetype.6.dylib (compatibility version 13.0.0, current version 13.2.0)
	/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 52.0.0)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.11)
	/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 550.43.0)
	/System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices (compatibility version 1.0.0, current version 38.0.0)

Can it be solved somehow?