Re: Which version of ghc will stretch have?
On Fri, Oct 21, 2016 at 07:54PM, Ilias Tsitsimpis wrote:
> On Thu, Oct 20, 2016 at 05:47PM, Clint Adams wrote:
> > and then on amd64 we have occasional things like
> >
> > /usr/bin/ld: dist-ghc/build/Text/Password/Strength_hsc_make.o: relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC
>
> I confirm that on amd64, building magic with the latest GHC (v8.0.1-4)
> fails with the following error:
>
> | # cabal install magic
> | Resolving dependencies...
> | Downloading magic-1.1...
> | Configuring magic-1.1...
> | Building magic-1.1...
> | Failed to install magic-1.1
> | Build log ( /root/.cabal/logs/magic-1.1.log ):
> | cabal: Entering directory '/tmp/cabal-tmp-17350/magic-1.1'
> | Configuring magic-1.1...
> | Building magic-1.1...
> | Preprocessing library magic-1.1...
> | /usr/bin/ld: dist/build/Magic/Data_hsc_make.o: relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC
> | /usr/bin/ld: final link failed: Nonrepresentable section on output
> | collect2: error: ld returned 1 exit status
> | linking dist/build/Magic/Data_hsc_make.o failed (exit code 1)
> | command was: /usr/bin/gcc dist/build/Magic/Data_hsc_make.o dist/build/Magic/Data_hsc_utils.o -o dist/build/Magic/Data_hsc_make -fno-PIE -fno-stack-protector -lmagic -L/usr/lib/ghc/base-4.9.0.0 -Wl,-R,/usr/lib/ghc/base-4.9.0.0 -L/usr/lib/ghc/integer-gmp-1.0.0.1 -Wl,-R,/usr/lib/ghc/integer-gmp-1.0.0.1 -lgmp -L/usr/lib/ghc/ghc-prim-0.5.0.0 -Wl,-R,/usr/lib/ghc/ghc-prim-0.5.0.0 -L/usr/lib/ghc/rts -Wl,-R,/usr/lib/ghc/rts -lm -lrt -ldl -lffi
If I add the `-fPIC' flag (i.e., cabal build --gcc-options='-fPIC') then
it works. I found a very similar upstream report[1] and a patch that
fixes it for OpenBSD[2]. Should we apply the same fix for Debian?
Another solution would be to disable PIE during linking (i.e., pass the
`-no-pie' flag to gcc). Currently only the `-fno-PIE' flag is passed (as
shown in the above error).
Any suggestions?
[1] https://ghc.haskell.org/trac/ghc/ticket/10597
[2] https://git.haskell.org/ghc.git/commitdiff/0cfee536e5261af873485e7150be4a4ac26cd0e3
--
Ilias
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