Re: [Xen-devel] xen-unstable stubdom build-failure when debug=n

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2014-07-28 at 11:47 +0200, Sander Eikelenboom wrote:
> Monday, July 28, 2014, 11:09:35 AM, you wrote:
> 
> > On Sat, 2014-07-26 at 17:14 +0200, Sander Eikelenboom wrote:
> >> Just tested some more with a strange outcome:
> >> 
> >> When doing:
> >> ~# git checkout  RELEASE-4.4.0
> >> ~# make mrproper && ./configure && make debug=n
> >> 
> >> It also fails with the error in dhcp i mentioned before.
> >> 
> >> However if i do:
> >> ~# git checkout  RELEASE-4.4.0
> >> ~# make mrproper && ./configure && make
> >> 
> >> It builds fine .. (and release-4.4.0 should have the implicit debug=n)
> >> So what is different when explicitly giving debug=n ?
> 
> > The only thing I can thing of would be that specifying debug= on the
> > make command line makes it enter the environment or MAKEFLAGS or
> > something, whereas setting it in the Makefile or .config etc doesn't.
> > (Perhaps e.g. "export debug" in Config.mk would make these two behave
> > the same?)
> 
> > Anyway, that having happened the debug could then filter down and get
> > picked up by the configure or build system of some sub-component in a
> > way we aren't expecting.
> 
> > That's all 100% speculation though.
> 
> Well just setting it only in the Config.mk works fine.
> 
> Could be due to the mixing, i was used to not changing my Config.mk and just 
> specifying "make debug=(y|n)" on the commandline.
> So Config.mk had debug=y, while the make had debug=n.
> However some googling didn't show much if that was even ever supported,
> although it used to work fine ;-)

I must confess that I can never remember how make prioritises these
things.

> Should there just be a ./configure --debug=y ?

I don't think so -- debug is supposed to affect the hypervisor too
(mostly even, I think) and that should not require a configure.

Ian.



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