Messages in this thread | | | Subject | Re: [kbuild] Re: linux-next: build failure after merge of the tip tree | From | Peter Zijlstra <> | Date | Thu, 17 Feb 2011 13:45:47 +0100 |
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On Thu, 2011-02-17 at 13:43 +0100, Ingo Molnar wrote: > * Stephen Rothwell <sfr@canb.auug.org.au> wrote: > > > Hi all, > > > > On Mon, 31 Jan 2011 15:42:59 +1100 Stephen Rothwell <sfr@canb.auug.org.au> wrote: > > > > > > After merging the tip tree, today's linux-next build (x86_64 allmodconfig) > > > failed like this: > > > > > > x86_64-linux-gcc: arch/x86/lib/memmove_64.c: No such file or directory > > > > > > Caused by commit 9599ec0471deae24044241e2173090d2cbc0e899 ("x86-64, mem: > > > Convert memmove() to assembly file and fix return value bug") interacting > > > with our build system. > > > > > > After removing arch/x86/lib/.memmove_64.o.cmd (left over from the build > > > before merging the tip tree) from my object tree, it built correctly. > > > > I am still getting this (of course). > > You reported this as a -tip build failure - but it appears to be some sort of kbuild > bug/artifact, right? There was a leftover .memmove_64.o.cmd file from an old tree. > > When jumping between kernel versions via git checkout a 'make mrproper' is generally > needed. In most cases 'make' will figure things out but it's not always guaranteed. > > So for example there are version transitions where a stale include/asm links could > cause build problems.
Yeah, I run into this problem once every few days, totally annoying. A make clean does fix it so I couldn't be arsed to actually submit myself to Kbuild voodoo, but if someone who knows about that stuff could come up with a fix I'd be most obliged.
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