If you're on Windows, I believe you can find the gcc.exe at the following location:

C:\Program Files\Haskell Platform\2009.2.0.2\gcc.exe

See this link for how to pick which C compiler to use:

http://www.haskell.org/ghc/docs/6.12.2/html/users_guide/options-phases.html#replacing-phases

2010/8/6 Günther Schmidt <gue.schmidt@web.de>
Hello,

how can I find out which gcc a ghc is hard-coded to use and is it possible to override it?

Günther

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