please report this issue on ghc trac and all the relevant information there in.
That is the best way to promptly get folks to see it
-Carter
On Saturday, September 28, 2013 at 2:55 AM, Christiaan Baaij wrote:
> Yes, I have both the static libs and the dynamic libs.
> So for every library I have both the 'libHS.a' and the
> 'libHS.dylib' files.
> And for all the compiled modules I have both the '.hi' and '.dyn_hi' files.
>
> So to be clear:
> - I have both the static and dynamic versions of all libraries/packages
>
> - I built a statically-linked executable by setting 'executable-dynamic' in
> my '.cabal/config' file explicitly to 'False'
> - otool -L confirms that the executable is indeed statically linked
> - Running the statically-linked executable that uses the GHC API, where the
> GHC API does dynamic linking (e.g. TH) => Segfault
>
> - I built a dynamically-linked executable setting 'executable-dynamic' in my
> '.cabal/config' file explicitly to 'True'
> - otool -L confirms that the executable is indeed dynamically linked.
> - Running the dynamically-linked binary that uses the GHC API, where the GHC
> API does dynamic linking => No problem, behaves normally
>
> So the problem is not that TH is not working/segfaulting, the problem is that
> I get segfaults when a statically linked executable does dynamic linking.
> At least on OS X.
>
> -- Christiaan
>
>
>
> On Sat, Sep 28, 2013 at 4:23 AM, Carter Schonwald (mailto:carter.schonw...@gmail.com)> wrote:
> > Hey Christian, did you build ghc and libs I both Dylib and static ways? TH
> > uses ghci, and ghci on OS X and a few other platforms uses the system
> > dylinker, so it may be that you've only built certain libs the static way,
> > but ghci requires the dynamic way as of 7.7
> >
> > Please let me know if that helps.
> >
> >
> >
> >
> > On Friday, September 27, 2013, Christiaan Baaij wrote:
> > > Dear all,
> > >
> > > It seems that executables that use the GHC API require to be dynamically
> > > linked on GHC 7.7.
> > > At least in the case that an GHC API function has to perform linking.
> > > Statically linked executable SEGFAULT when a GHC API function tries to do
> > > linking.
> > >
> > > I build 'haddock' from source by doing a 'cabal install' in the
> > > 'utils/haddock' directory of my ghc build tree.
> > > Here is the output of my statically linked haddock when I run it on one
> > > of my libraries:
> > > Haddock coverage:
> > > Warning: main:CLaSH.Util: Could not find documentation for exported
> > > module: X
> > > Warning: Couldn't find .haddock for export Control.Lens.TH.makeLenses
> > > 95% ( 18 / 19) in 'CLaSH.Util'
> > > 100% ( 8 / 8) in 'CLaSH.Core.TyCon'
> > > 100% ( 6 / 6) in 'CLaSH.Core.TysPrim'
> > > 100% ( 5 / 5) in 'CLaSH.Core.DataCon'
> > > 100% ( 3 / 3) in 'CLaSH.Core.Literal'
> > > 100% ( 5 / 5) in 'CLaSH.Core.Var'
> > > Bus error: 10 <-- SEGFAULT
> > >
> > > Here is the output of my dynamically linked haddock when I run it on one
> > > of my libraries:
> > > Haddock coverage:
> > > Warning: main:CLaSH.Util: Could not find documentation for exported
> > > module: X
> > > Warning: Couldn't find .haddock for export Control.Lens.TH.makeLenses
> > > 95% ( 18 / 19) in 'CLaSH.Util'
> > > 100% ( 8 / 8) in 'CLaSH.Core.TyCon'
> > > 100% ( 6 / 6) in 'CLaSH.Core.TysPrim'
> > > 100% ( 5 / 5) in 'CLaSH.Core.DataCon'
> > > 100% ( 3 / 3) in 'CLaSH.Core.Literal'
> > > 100% ( 5 / 5) in 'CLaSH.Core.Var'
> > > 100% ( 5 / 5) in 'CLaSH.Core.Term'
> > > 100% ( 8 / 8) in 'CLaSH.Core.Subst'
> > > 100% ( 24 / 24) in 'CLaSH.Core.Type'
> > > <… lots of warnings about missing link destination … >
> > > ~/Documents/devel/clash/src (master *)$
> > >
> > > I believe that the use of TH in the CLaSH.Core.Var file triggers the
> > > segfault in the statically linked version.
> > > I'm trying to create a smaller test case than running haddock on my
> > > library, but have been unsuccessful so far.
> > > That is why I haven't posted a bug report on the bug tracker yet.
> > > If somebody thinks I should, then please say so :-)
> > >
> > > My platform is:
> > > OS: OS X 10.8.5
> > > XCode: X-Code CL-tools 4.6.2
> > > GHC: GHC-HEAD (commit 94ab5d2984514f92dd919fbf3611a07d32105546)
> > > Build.mk:
> > > SRC_HC_OPTS = -O -H64m
> > > GhcStage1HcOpts = -O -fasm
> > > GhcStage2HcOpts = -O2 -fasm
> > > GhcHcOpts = -Rghc-timing
> > > GhcLibHcOpts= -O2
> > > HADDOCK_DOCS= NO
> > >
> > > I hope somebody can test this on linux with dynamic linking.
> > > As this bug affects haddock, I think it is quite important that somebody
> > > with more knowledge of dynamic linking looks into this.
> > >
> > > Regards,
> > >
> > > Christiaan
> > >
> > >
> > >
> > > ___
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> > > glasgow-haskell-us...@haskell.org
> > > http://www.haskell.org/mailman/listinfo/glasg
