Re: stage2 build fails

I ran into a similar(?) problem a while ago. "make maintainer-clean" does not necessarily remove every generated file. See for example https://mail.haskell.org/pipermail/ghc-devs/2019-August/018049.html Since then I only use git clean -dfxq && git submodule foreach git clean -dfxq which worked reliably for me (beware that this removes any untracked file). Maybe this helps? Cheers, Stefan On Tue, Jan 28, 2020 at 10:41:33AM +0000, Simon Peyton Jones via ghc-devs wrote:

I did "sh validate --legacy" which uses "make maintainer-clean".

I'll try again to double check. Is there any particular file I should remove?

Simon

| -----Original Message----- | From: Ben Gamari | Sent: 27 January 2020 18:59 | To: Simon Peyton Jones ; ghc-devs | Subject: RE: stage2 build fails | | Simon Peyton Jones writes: | | > | Indeed it would be nice to know which compiler you are using to | > | bootstrap. I suspect Sylvain is correct that the alternative can be | > | removed but first I would like to understand why this is arising only | > | now. | > | > I'm using 8.6.4 as my bootstrap compiler. But this message occurs only | when compiling the *stage2* compiler with the *stage1* compiler. At that | moment the bootstrap compiler is irrelevant. | > | > It's as if the build system doesn't know that the stage1 compiler is >= | 8.10 | > | Hmm, interesting. Has this tree been cleaned in the last month or two? | I suspect that this may have something to do with the changes to the | GHC_STAGE macro that were merged a while back (perhaps a stale header | file?). | | Cheers, | | - Ben

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