I just cloned GHC from github and tried to build it for the first time. I get the below result where the build tool says that existing object files are missing. I haven't touched a Makefile in a long time- help here is very appreciated.

===--- building final phase

make -r --no-print-directory -f ghc.mk phase=final all

"inplace/bin/ghc-stage1"   -H32m -O    -package-name ghc-prim-0.2.0.0 -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 rts-1.0 -split-objs -package-name ghc-prim -XHaskell98 -XCPP -XMagicHash -XForeignFunctionInterface -XUnliftedFFITypes -XUnboxedTuples -XEmptyDataDecls -XNoImplicitPrelude -O2 -no-user-package-conf -rtsopts     -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -hisuf hi -osuf  o -hcsuf hc -c libraries/ghc-prim/./GHC/CString.hs -o libraries/ghc-prim/dist-install/build/GHC/CString.o

/usr/bin/ld: error: cannot find libraries/ghc-prim/dist-install/build/GHC/CString_o_split/CString__1.o

/usr/bin/ld: error: cannot find libraries/ghc-prim/dist-install/build/GHC/CString_o_split/.o::CString(void)

/usr/bin/ld: error: cannot find libraries/ghc-prim/dist-install/build/GHC/CString_o_split/CString__3.o

/usr/bin/ld: error: cannot find libraries/ghc-prim/dist-install/build/GHC/CString_o_split/CString__4.o

/usr/bin/ld: error: cannot find libraries/ghc-prim/dist-install/build/GHC/CString_o_split/CString__5.o

/usr/bin/ld: error: cannot find libraries/ghc-prim/dist-install/build/GHC/CString_o_split/CString__6.o

collect2: ld returned 1 exit status

make[1]: *** [libraries/ghc-prim/dist-install/build/GHC/CString.o] Error 1

make: *** [all] Error 2