Developing On Mac
From Audacity Wiki
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Compiling on Mac OS X
Currently only command-line building is supported; there is no up-to-date Project Builder or Xcode project file. Compile just as you would a Unix program (see above). After building "audacity", an additional step is performed, that creates "Audacity.app". Make sure that you run "Audacity.app" and not "audacity", otherwise it won't work. Note that in the "mac" directory there is a patch file for wxMac-2.4.0 - it's recommended that you apply this patch first. This enables support for custom cursors, allows disabling anti-aliased text (for speed), and fixes a couple of bugs.
