Jeffrey Wilges

Current hard-coded pycairo flags in setup.py hinder installs where Python and pycairo have different prefixes

1

## Issue As in the title, the current hard-coded **pycairo** flags in [`setup.py`](https://github.com/mapnik/python-mapnik/blob/a2c2a86eec954b42d7f00093da03807d0834b1b4/setup.py#L230-L238) hinder installs where Python and **pycairo** have different prefixes. ### Clarification In a nutshell, if **pycairo** resides...

Allow pkg-config to detect flags for either: - `py3cairo`, or - `pycairo` The previous method of always using `sys.exec_prefix` to locate pycairo headers is insufficient on systems where Python and...