Matplotlib fails to build with Freetype 2.5.1 on OS X

[dodumosu]

I updated Freetype from 2.5.0 to 2.5.1 via Homebrew, and uninstalled and reinstalled Matplotlib 1.3.1, but it failed to build because it includes /usr/X11/include/ft2build.h, which includes freetype/config/ftheader.h, but the Freetype changelog (and ft2build.h itself) mentions including freetype2/config/ftheader.h instead.

I don't know how ReportLab and Pillow skipped including this header and built successfully with Freetype support in the same environment.

[efiring]

It looks like the problem is that when setupext.FreeType.add_flags is putting together the list of include directories, it is putting the output of freetype-config or pkg-config at the end, after the defaults, instead of at the beginning. Since there is a copy of ft2build.h in /usr/X11/include, which is already in the include list, that is what is being found. This seems like a basic bug in setupext.py, but I suspect there are subtleties I don't see yet. I will try a quick fix, and if it looks promising I will make a PR.

[tacaswell]

Looks like this was taken care of in #2623 . Please re-open if I am wrong.