遇到问题：
configure: error: Cannot use cairo-ft backend, although cairo claims it is working. Please check your caito installation and/or update cairo if necessary or set CAIRO_CFLAGS/CAIRO_LIBS accordingly.
采用类似办法：
conda install -c anaconda cairo
然而提示：

All requested packages already installed.

然后：
install.packages('Cairo')
还是报一样的error
最终没有解决，直接从别的环境中拷贝了Cairo的目录过来