[U-Boot] [PATCH 1/2] kbuild: Fix a false error of generic board support

[Marek Vasut]

On Wednesday, December 17, 2014 at 12:56:46 AM, Tom Rini wrote:
> On Tue, Dec 16, 2014 at 02:56:44PM -0600, mgerlach wrote:
> > Hello Masahiro Yamada,
> > 
> > Even the with this patch, we encountered a false error of generic board
> > support.  The problem was very interrmittent for us, but we were able
> > to debug the problem to performing builds on EXT3 file systems which
> > have a time stamp resolution of one second.  To reproduce the problem,
> > touch ./include/config/auto.conf and .config on a configured uboot tree
> > on an EXT3 file system.
> > 
> > The patch below fixes the problem for us.
> 
> This makes an odd race condition problem I run into when doing massively
> paralell builds worse :(  With MAKEALL no ARM boards build (ARCH wasn't
> set in time so it tried arch//Makefile for something) and buildman was
> also broken in a bunch of places.

Let me just chime in, I recall I did report something possibly similar some time 
ago [1]. I did not manage to put a finger on this issue though and I can no 
longer trigger it.

[1] http://lists.denx.de/pipermail/u-boot/2013-June/157481.html

Best regards,
Marek Vasut