我在项目中安装pycairo时遇到问题。请参阅以下错误,
Downloading/unpacking git+http://anongit.freedesktop.org/git/pycairo (from -r requirements.txt (line 7))
Cloning http://anongit.freedesktop.org/git/pycairo to /tmp/pip-puo8hs-build
Running setup.py egg_info for package from git+http://anongit.freedesktop.org/git/pycairo
cairo >= 1.10.2 Failed
/bin/sh: 1: pkg-config: not found
Complete output from command python setup.py egg_info:
cairo >= 1.10.2 Failed
/bin/sh: 1: pkg-config: not found
请解决我的问题?