(I found this in drafts; not sure how old it is.) I would try PKG_DEBUG_LEVEL=2, or maybe 3. Probably somehow the build of python is doing its own thing and not respecting CPPFLAGS. Lots of things build on my 10.9 mac, and there is no /usr/include. So this general mechanism mostly works. I think you will need to trace it and see how python34 evades it. I think I was able to build 3.3 and 3.4, but had PLIST issues. Do the other pythons (2.6, 2.7) build?
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