Sometimes I see this if I forget to add a file to the `exposed-modules`
field of the cabal file. You might be running into that?
On Fri, Aug 23, 2019 at 10:03 AM Jan van Brügge
Hi,
in order to clean up my code, I've moved a bunch of stuff to a new source file, `TcRowTys.hs` that works similar to `TcTypeNats.hs`. But when trying to compile a clean build of GHC, I get a linker error:
```
| Run Ghc LinkHs Stage0: _build/stage0/ghc/build/c/hschooks.o (and 1 more) => _build/stage0/bin/ghc
_build/stage0/lib/../lib/x86_64-linux-ghc-8.6.5/ghc-8.9.0.20190722/libHSghc-8.9.0.20190722.a(PrelInfo.o)(.text+0x2814): error: undefined reference to 'ghc_TcRowTys_rowTyCons_closure'
_build/stage0/lib/../lib/x86_64-linux-ghc-8.6.5/ghc-8.9.0.20190722/libHSghc-8.9.0.20190722.a(PrelInfo.o)(.data+0x578): error: undefined reference to 'ghc_TcRowTys_rowTyCons_closure'
_build/stage0/lib/../lib/x86_64-linux-ghc-8.6.5/ghc-8.9.0.20190722/libHSghc-8.9.0.20190722.a(TcHsType.o)(.data+0xdd8): error: undefined reference to 'ghc_TcRowTys_rnilTyCon_closure' collect2: Fehler: ld gab 1 als Ende-Status zurück `gcc' failed in phase `Linker'. (Exit code: 1)
```
I had a look at the Wiki including the FAQ, but did not fine anything about that topic. Does someone know what I have to do for this to work?
Cheers, Jan
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