The rgl package compiles and runs on Mavericks, though it only displays in X11 currently, and it gets a number of compile-time warnings like

glgui.cpp:50:5: warning: 'gluUnProject' is deprecated: first deprecated in OS X 10.9
      - "Use GLKMathUnproject" [-Wdeprecated-declarations]

There are also warnings about gluProject, gluErrorString, and some others.

I can probably write conditional workarounds for each of these, but I have a very basic question: how do I write a conditional to depend on an OS X version? Do I need to write my own autoconf macro, or is there one available in the standard collection, or online somewhere?

Duncan Murdoch

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