在mac上利用homebrew安装erlang的时候提示下面的错

$ brew install erlang

Error: You must `brew link libtool' before erlang can be installed

zhi:~ zhi$ brew link libtool

Linking /usr/local/Cellar/libtool/2.4.2...

Error: Could not symlink include/ltdl.h

/usr/local/include is not writable.

解决办法

sudo chown -R whoami /usr/local

brew link libtool