Use multiple output rules for *.o and *.hi files.
Use multiple output rules for *.o and *.hi files.

sdiehl/ghc,izgzhen/hadrian,sdiehl/ghc,sdiehl/ghc,snowleopard/hadrian,quchen/shaking-up-ghc,sdiehl/ghc,snowleopard/shaking-up-ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,bgamari/shaking-up-ghc