Hi Eric, Looks like this is known for non-framework builds of Python on OSX. (We don't build it Framework-wise because it caused a bunch of problems in the past and mainly only allowed usage of a few native widgets.) Here is a patch you can apply and then rebuild Python with to (possibly) get it to work: http://bugs.python.org/issue1602133 -Matt On Fri, Aug 24, 2012 at 4:46 PM, Eric Hallman <hallman13@gmail.com> wrote:

Hello, I know this is not a yt specific issue, however it involves an interaction of the yt installed python and XSPEC. Maybe some of you on this list have done an XSPEC install on Mac OS X (Lion in this case) and run into this. At link time during the build of XSPEC, it gives the following error:

Undefined symbols for architecture x86_64: "_environ", referenced from: _initposix in libpython2.7.a(posixmodule.o) ld: symbol(s) not found for architecture x86_64

Originally on my Mac, XSPEC tried to build 32-bit, and failed with python linkages (since python is 64 bit in the yt install build). Once I went to 64-bit, this was the only remaining error. Does anyone have ideas?

Thanks!

Eric Hallman

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