[Buildroot] rsync fails to build

Sagaert Johan sagaert.johan at skynet.be
Mon Mar 31 12:31:49 UTC 2014


 
Dear Thomas

I have 2 buildroot build trees, since they are run on the same user account they share the same buildroot-ccache directories.
Could this be a cause of ccache trouble ?

Regards, Johan

-----Oorspronkelijk bericht-----
Van: buildroot-bounces at busybox.net [mailto:buildroot-bounces at busybox.net] Namens Thomas Petazzoni
Verzonden: maandag 31 maart 2014 10:26
Aan: Sagaert Johan
CC: buildroot at busybox.net
Onderwerp: Re: [Buildroot] rsync fails to build

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 _______________________________________________
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