mxcl/homebrew — pull request #15933 by 2bits (2012-11-09 08:07:46+00:00)
Title: ghc: add ENV.m32 for 32bit on x64.

- Add `ENV.m32` to fix build errors on 64bit hardware w/ `--32-bit`

Some users want to force 32bit ghc on 64bit hardware.
Ghc, however, comes with several internal libraries like libgmp
that get configured during the build. By forcing `ENV.m32`,
we force all the internal libs to build 32bit also.

Fixes #15925