When I try to \"brew link autoconf\" in the terminal I keep getting this error.
Error: Could not symlink file: /usr/local/Cellar/autoconf/2.69/share/emacs/site-lisp /usr
I tried under /usr/local/share/emacs/
sudo chmod 777 site-lisp
and then
brew link autoconf
and problem solve!
mac@Anna_mac : /usr/local/share/emacs : brew link autoconf Linking /usr/local/Cellar/autoconf/2.69... 22 symlinks created