odd GHC 6.8.2 compile failure

Simon Marlow simonmarhaskell at gmail.com
Thu Jan 3 06:58:16 EST 2008

Isaac Dupree wrote:
> Simon Marlow wrote:
>> Isaac Dupree wrote:
>>> linking the compiled stage2 failed when bootstrapping from 6.6.1, 
>>> with --prefix=$HOME .
>>> It's odd because I previously had a 6.8.2 (official x86 Linux 
>>> bin-dist) installed as root (it's gone now), and I still have a bunch 
>>> of cabal/hackage packages installed in $HOME that were compiled by 
>>> that 6.8.2 (in addition to a few things installed by `cabal install` 
>>> in ~/.cabal/).  Do you think that could be confusing the build 
>>> process, and if it is, is that a bug - and a bug in what?
>> It looks like at some point you've updated your sources and recompiled 
>> without cleaning in stage2, or something similar.  The build system 
>> doesn't currently notice when libraries have changed and stage2 needs 
>> to be completely recompiled.
> It sure looks that way!  But I didn't do that personally; I think these 
> are all of my steps:
> [download via Firefox to /Users/me/downloads/ghc-6.8.2-src.tar.bz2]
> cd /Users/me/programming/cabalz/NotActuallyCabalButMaybeShouldBe
> aunpack /Users/me/downloads/ghc-6.8.2-src.tar.bz2
> # this `aunpack` is equivalent to tar -xjf in this case.
> cd ghc-6.8.2
> ./configure --prefix=$HOME
> # ($HOME is /Users/me/HOME , by the way).
> make
> Indeed I just reproduced it, newly unpacking that tarball in a new 
> location, to make sure, and I got the same error.
> What if GHC suddenly decided to link with the newer versions of the 
> boot-libraries than come with 6.8.2, the ones that could be found in 
> $HOME since I installed them there? (or with the _same_ versions that 
> happened to be compiled with different flags, perhaps?)

And you get different results if you omit the --prefix=$HOME?  (if so, 
that's very strange, and I don't have a clue what's wrong, yet)


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