Why can configure.compiler be cc or gcc?

[Clemens Lang]

On Mon, Nov 04, 2013 at 05:00:04PM -0800, Jeremy Huddleston Sequoia wrote:
> Yes, if building from source, we should error out if
> (/usr/include/stdlib.h doesn't exist) or ((the xcode version is "none"
> or "") and (OS is macosx)).

Note that doing this will cause the postflight script to fail for users
without Xcode or the command line tools using an outdated binary
installer, which might not be what we want.

-- 
Clemens Lang