ANNOUNCE: GHC 7.10.1 Release Candidate 3

Austin Seipp austin at
Tue Mar 17 14:40:46 UTC 2015

The only reason they work on glibc 2.11 is, AFAIK, because we built
separate CentOS 6.5 binaries for them. :)

FWIW, the source should build fine on these platforms, so once we add
the bindists for those systems, it should work Out Of The Box. But the
Debian 7 bindist isn't going to work on them, that's true.

We should probably rename the tarballs however... it's clear "deb7"
and "centos65" aren't very enlightening names; something like
"-glibc211-gmp4" vs "glibc212-gmp5" would be better, even if slightly

On Tue, Mar 17, 2015 at 3:33 AM, Miëtek Bak <mietek at> wrote:
> As I wrote previously — the bindist name does mention ‘deb7’, so perhaps this is all working as intended, and perhaps supporting such ancient distributions is not actually needed.
> However, the GHC 7.8.4, 7.8.3, and 7.8.2 bindists work fine with glibc 2.11, so this is a regression.
> --
> Miëtek
> On 2015-03-17, at 08:25, Herbert Valerio Riedel <hvriedel at> wrote:
>> On 2015-03-17 at 03:09:23 +0100, Miëtek Bak wrote:
>>> As with 7.10.1-rc2, installation fails on CentOS 6 (i386), Debian 6, and Ubuntu 10.04 LTS, in one of two following ways —
>>> 1. On i386:
>>>      "utils/ghc-cabal/dist-install/build/tmp/ghc-cabal-bindist" copy libraries/ghc-prim dist-install "strip" '' '/app/ghc' '/app/ghc/lib/ghc-' '/app/ghc/share/doc/ghc/html/libraries' 'v p dyn'
>>>      ghc-cabal/dist-install/build/tmp/ghc-cabal: symbol lookup error: libraries/integer-gmp2/dist-install/build/ undefined symbol: __gmpn_ior_n
>> Well, it shouldn't be very surprising that the deb7 (wheezy) ghc bindist
>> doesn't work on deb6 (squeeze), as it's been compile-time configured for
>> the environment provided by deb7 which has newer libraries with more
>> features/symbols.
>> So what's needed here is probably a 2nd linux bindist build on an
>> ancient enough (i.e. the one with the oldest libraries among
>> CentOS6/Deb6/Ubuntu10.04) Linux environment.


Austin Seipp, Haskell Consultant
Well-Typed LLP,

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