Can't compile GHC 6.8.2

[Simon Peyton-Jones]

Ah hum.  We probably have not compiled GHC 6.8 with 6.2 for some time.  Worse, we don't even clearly document what the oldest version is that should bootstrap any given version.

Ian: could you extend the building guide http://hackage.haskell.org/trac/ghc/wiki/Building (perhaps the "what tools you need" page?) with

a) the algorithm we use.  I think we say that any GHC can be compiled with the previous three major releases, but maybe it's two.

b) a table giving the claimed state of play
        To compile   You need at least
        6.10           6.6
        6.8          6.4

no need to go back too far.


THanks

Simon

| -----Original Message-----
| From: glasgow-haskell-users-bounces at haskell.org [mailto:glasgow-haskell-users-
| bounces at haskell.org] On Behalf Of Barney Stratford
| Sent: 24 November 2008 11:27
| To: glasgow-haskell-users at haskell.org
| Subject: Can't compile GHC 6.8.2
|
| I'm trying to compile GHC 6.8.2 using my existing GHC 6.2, but the
| typechecker refuses to compile. The problem seems to be that the hi-boot
| files in compiler/typecheck contain some incorrect type signatures. I've
| fixed most of them, but TcMatches.hi-boot-6 has slightly stumped me. As
| it stands, it says
|
| tcMatchesFun :: Name.Name
|              -> HsExpr.MatchGroup Name.Name
|              -> TcType.BoxyRhoType
|              -> TcRnTypes.TcM (HsBinds.HsWrapper, HsExpr.MatchGroup TcRnTypes.TcId)
|
| but it should say something like
|
| tcMatchesFun :: Name.Name -> Bool
|              -> HsExpr.MatchGroup Name.Name
|              -> TcType.BoxyRhoType
|              -> TcRnTypes.TcM (HsBinds.HsWrapper, HsExpr.MatchGroup TcRnTypes.TcId)
|
| Unfortunately, that doesn't work, as it assumes I meant TcMatches.Bool,
| so I tried saying Prelude.Bool instead. Now I get the complaint that
| Prelude.Bool isn't in scope.
|
| Has anyone else seen this issue? I've looked for answers in the docs and
| with Google, but no luck.
|
| I'm running Mac OS 10.3, with GHC 6.2 installed under Fink. I borrowed
| the Fink package for GHC 6.8.2 and adapted it slightly so it would
| bootstrap from my existing GHC, as the bootstrap code available for
| download relies on a later version of my OS. GHC 6.2 can't compile GHC
| 6.10, which is why I'm going for the earlier version.
|
| Cheers,
| Barney.
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