title: How to compile a C program that uses a Framework without using Xcode
body: <p>I have a C command line tool written in Xcode that uses the Accelerate Framework. It builds and runs as expected from Xcode. But when I try to compile it from the command line (using gcc), I get the error: <code>"Accelerate/Accelerate.h: No such file or directory"</code>. I don't know if adding the location of <code>Accelerate.h</code> to <code>C_INCLUDE_PATH</code> is the best way to fix this. Is there a better way ?</p>