On Thu, Jan 20, 2011 at 05:42:28PM +1100, Manuel M T Chakravarty wrote:
> After some changes to GHC's handling of DPH packages, I'm currently fighting
> with the build system. In particular, I'm getting
>
> > "inplace/bin/ghc-cabal" configure
> > --with-ghc="/Users/chak/Code/ghc-test/inplace/bin/ghc-stage1"
> > --with-ghc-pkg="/Users/chak/Code/ghc-test/inplace/bin/ghc-pkg"
> > --with-gcc="/usr/bin/gcc" --configure-option=--with-cc="/usr/bin/gcc"
> > --flag=include-ghc-prim --enable-shared --enable-library-for-ghci
> > --with-hscolour="/Users/chak/bin/HsColour" --configure-option=CFLAGS="-Wall
> > -march=i686 -m32 -isysroot /Developer/SDKs/MacOSX10.5.sdk
> > -mmacosx-version-min=10.5 -fno-stack-protector "
> > --configure-option=LDFLAGS=" -march=i686 -m32 -isysroot
> > /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5 "
> > --configure-option=CPPFLAGS=" -march=i686 -m32 -isysroot
> > /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5 " -fdph-this --
> > dist-install libraries/ghc-prim
> > Configuring ghc-prim-0.2.0.0...
> > <command line>: the dph-par package is not installed.
> > To install it: "cabal install dph".
>
> The error message is generated by GHC's package management (in
> main/Packages.lhs and I think I know why GHC emits it). However, I don't
> understand why/how GHC is invoked by ghc-cabal. I looked at the source (the
> function 'generate' seems to be the main code that is executed for this
> invocation) and it appears to only generate some config files. I'd be
> grateful for any pointers on where GHC is invoked during the execution of
> ghc-cabal. (I didn't find any info about this on the wiki.)
If I'm following right, you want to pass
--ghc-option -fdph-this
instead of just
-fdph-this
to ghc-cabal.
If you also pass -v3 then Cabal will be verbose about what it's doing.
Thanks
Ian
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