I just tried my LLVM unregistered build again against HEAD (for QNX ARM) and got this: make -r --no-print-directory -f ghc.mk phase=final all "inplace/bin/ghc-stage1" -static -H64m -O0 -fllvm -package-name integer-simple-0.1.1.0 -hide-all-packages -i -ilibraries/integer-simple/. -ilibraries/integer-simple/dist-install/build -ilibraries/integer-simple/dist-install/build/autogen -Ilibraries/integer-simple/dist-install/build -Ilibraries/integer-simple/dist-install/build/autogen -Ilibraries/integer-simple/. -optP-include -optPlibraries/integer-simple/dist-install/build/autogen/cabal_macros.h -package ghc-prim-0.3.1.0 -package-name integer-simple -Wall -XHaskell98 -XCPP -XMagicHash -XBangPatterns -XUnboxedTuples -XForeignFunctionInterface -XUnliftedFFITypes -XNoImplicitPrelude -O -fllvm -no-user-package-db -rtsopts -odir libraries/integer-simple/dist-install/build -hidir libraries/integer-simple/dist-install/build -stubdir libraries/integer-simple/dist-install/build -hisuf hi -osuf o -hcsuf hc -c libraries/integer-simple/./GHC/Integer/Type.hs -o libraries/integer-simple/dist-install/build/GHC/Integer/Type.o when making flags consistent: Warning: Compiler unregisterised, so compiling via C /tmp/ghc30896_0/ghc30896_0.hc: In function 'c2pA_entry': /tmp/ghc30896_0/ghc30896_0.hc:3691:1: warning: this decimal constant is unsigned only in ISO C90 [enabled by default] /tmp/ghc30896_0/ghc30896_0.hc:3691:17: error: expected ')' before numeric constant make[1]: *** [libraries/integer-simple/dist-install/build/GHC/Integer/Type.o] Error 1 make: *** [all] Error 2 You can clearly see that `-fllvm` *is* being passed, and I double-checked and I do have the quick-llvm build type selected... but it's trying via C? What? -- Stephen Paul Weber, @singpolyma See http://singpolyma.net for how I prefer to be contacted edition right joseph