To build Mussa on OS X as a universal binary obviously requires, that all of the dependencies be built as universal binaries.

Qt

Thankfully Qt was quite simple, as there is a "-universal" switch that one needs to pass to the configure script.

Some of the systems used to build mussa have png libraries in the /usr/local/lib directories, so to make redistribution a little simpler, the version qt the OS X binary is linked against uses the qt versions of a number of graphics libraries.

configure --prefix=/usr/local/qt/4.1.4 -qt-libpng -system-zlib -qt-libjpeg -qt-gif -qt-libmng -fast -confirm-license -universal "$@"

Redistributing OS X binaries is quite annoying, as OS X pre-links all shared libraries, so unless one installs the Qt frameworks in exactly the same place as the development machine Mussa won't work.

Included in the Mussa source tree is a small python script source:makelib/osxdist.py which will copy the Qt frameworks into the .app bundle and properly bless all of the binaries with install_name_tool.

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