Installed, just not linked

Question

Note: I\'m not so good at using shell.

I was trying to install Valgrind using brew on Yosemite.

brew install --HEAD valgrind<

Answer 1

Looks like a permission issue. I would try doing this

chmod 755 /usr/local/lib/pkgconfig

This should make that available, then try

brew link valgrind

If that doesn't work I would try doing a check on it

brew doctor