heroku/vulcan — pull request #16 by lpetre (2012-03-22 13:20:51+00:00)
Title: Dependency support

I'm trying to setup a custom buildpack that can provide libzmq if necessary. The issue I ran into is that libzmq requires uuid-dev, which is in utils-linux. I can use vulcan to build utils-linux, but then was faced with the question: how do I get that version of utils-linux onto the machine that is building libzmq.

Rather than setup a custom buildpack for vulcan that included utils-linux, I added an option to vulcan build that lets me include any number of vulcan built dependencies. These dependencies get pulled down via http and expanded into a deps folder, which is then added to the LDFLAGS/CFLAGS/etc environment variables.

This also includes my other pull request, to fix the cradle errors.