安裝universal-ctags

universal-ctags是exuberant-ctags的替代者，相比gtags能夠解析更多的語言，可是其餘方面好比操做，數據庫的組織方式等就不夠好。須要本身編譯安裝

先用 git clone https://github.com/universal-ctags/ctags.git 下載，而後參考ctags/docs/autotools.rst，用如下命令編譯（Ubuntu要先用 sudo apt-get install autoconf 安裝autoconf)

$ ./autogen.sh
$ ./configure --prefix=/where/you/want # defaults to /usr/local
$ make
$ sudo make install # may require extra privileges depending on where to install