[Buildroot] rsync fails to build

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Dear Sagaert Johan,

On Mon, 31 Mar 2014 02:36:43 +0200, Sagaert Johan wrote:

> Yes , I can confirm rsync builds with the ccache disabled.

So seems like you changed some toolchain options, or some other thing,
and ccache is re-using some invalid previous cache entries. We know we
have some things to improve on the ccache front, a few patches have
been floating around for some time.

> I have kept the 2 rync build dirs in case they could be of any use.

I guess comparing the two config.log files will help, but I'm not sure
I want to debug a problem related to the invalid re-use of ccache
results.

> As a sidenote :
> nettle sometimes (1 on 20 ) throws a build error, and just starting make again without actually removing
> its build directory just resumes the build without error.

This looks like a parallel build issue...

> It never gives an error when the ccache is off.

... but it should also occur with ccache I believe, unless maybe the
speed-up provided by ccache "hides" the parallel build issue. I don't
think we have seen nettle build issues in the autobuilders that looked
like parallel build problems, though.

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com