Hi Michal, On Tue, 26 Apr 2016 15:30:01 +0200 Michal Marek <mma...@suse.cz> wrote: > > On 2016-04-26 05:38, Stephen Rothwell wrote: > > Hi Nicolas, > > > > After merging the block tree, today's linux-next build (powerpc > > ppc64_defconfig) failed like this: > > > > ERROR: ".blk_queue_write_cache" [drivers/block/virtio_blk.ko] undefined! > > ERROR: ".blk_queue_write_cache" [drivers/block/ps3disk.ko] undefined! > > ERROR: ".blk_queue_write_cache" [drivers/block/nbd.ko] undefined! > > > > Caused by commit > > > > 089095b8eef9 ("kbuild: better abstract vmlinux sequential prerequisites") > > > > from the kbuild-pite tree. > > > > I have reverted that commit for today. > > I can't reproduce this with today's linux-next and the revert reverted. > Also, CONFIG_TRIM_UNUSED_KSYMS is disabled in the defconfig as expected, > so I have no idea what went wrong.
Yeah, I couldn't figure it out either, but the revert made it work for me. Could it be that I do incremental builds - so today, I would have built commit b087ce990625 ("Merge remote-tracking branch 'input/next'") which worked, then commit 9d67df654092 ("Merge remote-tracking branch 'block/for-next'") which failed. The only suspect code in the block tree has been there since April 13 with no build failures. Anyway, I can see how things go tomorrow, but I hate it when things seem fragile like this. -- Cheers, Stephen Rothwell