facebook/hhvm — pull request #3867 by c9s (2014-09-27 17:04:31+00:00)
Title: Build Fix: Add libmemcached link directory to fix libmemcached linking

For MacPorts/HomeBrew users, libmemcached is located in neither
/opt/local/lib nor /usr/local/lib, however The `FindLibmemcached.cmake`
appends linking arguments without the linking directory. thus, at the
final linking phase, the compiler couldn't find the libmemcached library.