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[Bug bootstrap/58572] [4.9 regression] make bootstrap-lean leads to installation failure (doing extra rebuilds and invoking system compiler)
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 05 Nov 2013 14:43:02 +0000
- Subject: [Bug bootstrap/58572] [4.9 regression] make bootstrap-lean leads to installation failure (doing extra rebuilds and invoking system compiler)
- Auto-submitted: auto-generated
- References: <bug-58572-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58572
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Tom Tromey from comment #3)
> I was curious why make had decided to rebuild c/c-lang.o (picking
> the recompile that came first for me) so I added a line to the
> .c.o rule that printed $?
>
> This yielded:
>
> /home/tromey/Space/Trunk/Git/PFE/prev-x86_64-unknown-linux-gnu/libstdc++-v3/
> include/cstring
> /home/tromey/Space/Trunk/Git/PFE/prev-x86_64-unknown-linux-gnu/libstdc++-v3/
> include/cstdlib
>
>
> So I think what is going on is that the automatic tracking scheme
> notices a dependency previously omitted by the Makefile. However, due
> to how bootstrap-lean works, this file is deleted before the "install"
> step.
>
> I am not sure what to do about this.
> All I can think of is that bootstrap-lean probably must leave one
> prev- directory around.
I think it does so anyway during bootstrap, so it's not an issue if
it stays there for install (IMHO).