mxcl/homebrew — pull request #17032 by samueljohn (2013-01-12 17:45:55+00:00)
Title: mapnik: Harden build. New: --with-gdal --with-geos

- Mapnik searches for py2cairo -> added dep if --with-cairo
- Explicitly give includes and libs for icu, boost, proj,
jpeg, libtif, and cairo
- pkg-config is not only used for cairo -> moved it out
of the `if build.include? 'with-cairo'` block

Mapnik previously failed on superenv, if homebrew is in a non-standard location.
With these changes, I can build it successfully on Xcode-only 10.8.