Hello, These days I can "validate" GHC head on Mac. But to my surprise, I cannot build GHC head on Mac. I verified this with both 32bit and 64bit bootstrapping GHC on Mac. Any ideas? "inplace/bin/ghc-stage1" -static -prof -H32m -O -package-name hoopl-3.10.0.0 -hide-all-packages -i -ilibraries/hoopl/src -ilibraries/hoopl/dist-install/build -ilibraries/hoopl/dist-install/build/autogen -Ilibraries/hoopl/dist-install/build -Ilibraries/hoopl/dist-install/build/autogen -Ilibraries/hoopl/. -optP-include -optPlibraries/hoopl/dist-install/build/autogen/cabal_macros.h -package base-4.7.0.0 -package containers-0.5.0.0 -split-objs -Wall -fno-warn-name-shadowing -XHaskell98 -XCPP -O2 -no-user-package-db -rtsopts -odir libraries/hoopl/dist-install/build -hidir libraries/hoopl/dist-install/build -stubdir libraries/hoopl/dist-install/build -hisuf p_hi -osuf p_o -hcsuf p_hc -c libraries/hoopl/src/Compiler/Hoopl/Show.hs -o libraries/hoopl/dist-install/build/Compiler/Hoopl/Show.p_o -dyno libraries/hoopl/dist-install/build/Compiler/Hoopl/Show.dyn_o "inplace/bin/ghc-stage1" -static -prof -H32m -O -package-name hoopl-3.10.0.0 -hide-all-packages -i -ilibraries/hoopl/src -ilibraries/hoopl/dist-install/build -ilibraries/hoopl/dist-install/build/autogen -Ilibraries/hoopl/dist-install/build -Ilibraries/hoopl/dist-install/build/autogen -Ilibraries/hoopl/. -optP-include -optPlibraries/hoopl/dist-install/build/autogen/cabal_macros.h -package base-4.7.0.0 -package containers-0.5.0.0 -split-objs -Wall -fno-warn-name-shadowing -XHaskell98 -XCPP -O2 -no-user-package-db -rtsopts -odir libraries/hoopl/dist-install/build -hidir libraries/hoopl/dist-install/build -stubdir libraries/hoopl/dist-install/build -hisuf p_hi -osuf p_o -hcsuf p_hc -c libraries/hoopl/src/Compiler/Hoopl/MkGraph.hs -o libraries/hoopl/dist-install/build/Compiler/Hoopl/MkGraph.p_o -dyno libraries/hoopl/dist-install/build/Compiler/Hoopl/MkGraph.dyn_o ghc-stage1: could not execute: /usr/bin/gcc make[1]: *** [libraries/template-haskell/dist-install/build/Language/Haskell/TH/Syntax.p_o] Error 1 make[1]: *** Waiting for unfinished jobs.... make: *** [all] Error 2 --Kazu