Comment 5 for bug 1473801

I'm having a devil of a time getting scons to see dependencies. I'm following the instructions here:
http://www.mixxx.org/wiki/doku.php/compiling_on_os_x
but scons can't see a number of packages - e.g. protobuf-cpp, which is installed, or qt, which is also installed. Other examples of failing packages are libtag and librubberband (all installed)