locate pangocairo.pc
## 查询结果为：
chaijingchun@cjc:~$ locate pangocairo.pc
/home/chaijingchun/anaconda3/lib/pkgconfig/pangocairo.pc
/mnt/2537E83D65E33A92/Users/cjc.win/AppData/Local/unity3d/cache/sysroots/linux-x86/9.1.0-2.17-v0_608efc24a3b402ec57809211b16a6d32d519f891d4038e1fc8509fe300c395b2-1/usr/lib/pkgconfig/pangocairo.pc
/mnt/2537E83D65E33A92/Users/cjc.win/AppData/Local/unity3d/cache/sysroots/linux-x86/9.1.0-2.17-v0_608efc24a3b402ec57809211b16a6d32d519f891d4038e1fc8509fe300c395b2-1/usr/lib64/pkgconfig/pangocairo.pc
将该文件复制到 PKG_CONFIG_PATH 对应的目录，对于linux来说，这个目录为：/usr/lib/pkgconfig/
sudo ln -s /home/chaijingchun/anaconda3/lib/pkgconfig/* /usr/lib/pkgconfig
