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Homebrew installed libraries, how do I use them?

I'm a bit confused. I've installed a bunch of libraries (e.g. vtk, gsl,...) that I need for a c++ project for school. I used homebrew to install them (luckily there were formulas available). My ...
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1answer
255 views

Is it possible to install both Xcode 3 and 4 side-by-side, alternate use either one or the other

I've got a handle on how to install Xcode 3 and 4 on the same machine (running OS X < 10.7), so I'm looking more how to manage this environment. Rather: is it possible to enter some shell command ...