So ghc-stage1 is working. Good! Now just to find why your base is broken, please rebuild ghc completely and this time does not use any -j 5 option. It'll use just one core, but will stop on the first error. Let's see how far you get. Ah. Alright, it took a while longer.
$ ./configure --target=arm-linux-gnueabihf --with-gcc=arm-linux-gnueabihf-gcc-sysroot --enable-unregisterised && make (...) "inplace/bin/ghc-stage1" -hisuf hi -osuf o -hcsuf hc -static -H64m -O0 -this-package-key ghcpr_8TmvWUcS1U1IKHT0levwg3 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim/dist-install/build/autogen -Ilibraries/ghc-prim/dist-install/build -Ilibraries/ghc-prim/dist-install/build/autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/autogen/cabal_macros.h -package-key rts -this-package-key ghc-prim -XHaskell2010 -O -fllvm -no-user-package-db -rtsopts -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -c libraries/ghc-prim/./GHC/CString.hs -o libraries/ghc-prim/dist-install/build/GHC/CString.o You are using a new version of LLVM that hasn't been tested yet! We will try though... opt: /tmp/ghc23881_0/ghc_1.ll:7:6: error: unexpected type in metadata definition !0 = metadata !{metadata !"top", i8* null} ^ libraries/ghc-prim/ghc.mk:4: recipe for target 'libraries/ghc-prim/dist-install/build/GHC/CString.o' failed make[1]: *** [libraries/ghc-prim/dist-install/build/GHC/CString.o] Error 1 Makefile:71: recipe for target 'all' failed make: *** [all] Error 2 This is weird, I think I'm not even using LLVM. Before this, there were loads of things like these: /tmp/ghc23862_0/ghc_2.hc:1528:30: warning: function called through a non-compatible type [enabled by default] ((void (*)(void *))(W_)&barf)((void *)(W_)&c7G_str);; ^ /tmp/ghc23862_0/ghc_2.hc:1528:30: note: if this code is reached, the program will abort João Miguel