Cabal reports mismatched interface file ways dyn

[Stefan Schulze Frielinghaus]

Yes, it looks so:

$ ls -1 libraries/ghc-prim/dist-install/build/GHC/CString.*
libraries/ghc-prim/dist-install/build/GHC/CString.dyn_hi
libraries/ghc-prim/dist-install/build/GHC/CString.dyn_o
libraries/ghc-prim/dist-install/build/GHC/CString.hi
libraries/ghc-prim/dist-install/build/GHC/CString.o

$ inplace/bin/ghc-stage2 --show-iface libraries/ghc-prim/dist-install/build/GHC/CString.hi | grep --after-context=1 Way
Way: Wanted [d, y, n],
     got    []

On Thu, Jul 11, 2019 at 11:03:16AM +0100, Matthew Pickering wrote:
> Does the quick flavour build the dynamic libraries?
> 
> On Thu, Jul 11, 2019 at 10:07 AM Stefan Schulze Frielinghaus
> <ml at stefansf.de> wrote:
> >
> > Hi all,
> >
> > I'm trying to compile GHC 8.6.5 using the LLVM backend and dynamic linking. My
> > build.mk file looks as follows:
> >
> > include mk/flavours/quick-llvm.mk
> > DYNAMIC_BY_DEFAULT = YES
> >
> > I can build a stage3 compiler. However while executing `make install` the
> > following error shows up:
> >
> > "inplace/bin/ghc-cabal" register libraries/ghc-prim dist-install "/devel/ghc86/lib/ghc-8.6.5/bin/ghc" "/devel/ghc86/lib/ghc-8.6.5/bin/ghc-pkg" "/devel/ghc86/lib/ghc-8.6.5" '' '/devel/ghc86' '/devel/ghc86/lib/ghc-8.6.5' '/devel/ghc86/share/doc/ghc-8.6.5/html/libraries' NO
> > ghc-cabal: '/devel/ghc86/lib/ghc-8.6.5/bin/ghc' exited with an error:
> > Bad interface file: dist-install/build/GHC/CString.hi
> > mismatched interface file ways (wanted "dyn", got "")
> >
> > I found similar reports [1,2] from 2013 but no solution. Any ideas how to fix
> > this?
> >
> > Cheers,
> > Stefan
> >
> > [1] https://mail.haskell.org/pipermail/ghc-devs/2013-December/003488.html
> > [2] https://mail.haskell.org/pipermail/ghc-devs/2013-December/003507.html
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