Re: [Xen-devel] [XEN PATCH v2 00/12] xen: Build system improvements

From: Anthony PERARD <anthony.perard@citrix.com>
To: <xen-devel@lists.xenproject.org>
Cc: "Kevin Tian" <kevin.tian@intel.com>,
	"Stefano Stabellini" <sstabellini@kernel.org>,
	"Julien Grall" <julien@xen.org>, "Wei Liu" <wl@xen.org>,
	"Konrad Rzeszutek Wilk" <konrad.wilk@oracle.com>,
	"George Dunlap" <George.Dunlap@eu.citrix.com>,
	"Andrew Cooper" <andrew.cooper3@citrix.com>,
	"Ian Jackson" <ian.jackson@eu.citrix.com>,
	"Tim Deegan" <tim@xen.org>,
	"Ross Lagerwall" <ross.lagerwall@citrix.com>,
	"Daniel De Graaf" <dgdegra@tycho.nsa.gov>,
	"Volodymyr Babchuk" <Volodymyr_Babchuk@epam.com>,
	"Roger Pau Monné" <roger.pau@citrix.com>
Subject: Re: [Xen-devel] [XEN PATCH v2 00/12] xen: Build system improvements
Date: Tue, 21 Jan 2020 14:08:12 +0000	[thread overview]
Message-ID: <20200121140812.GG1288@perard.uk.xensource.com> (raw)
In-Reply-To: <20200117105358.607910-1-anthony.perard@citrix.com>

(Actually CCing all that are CCed on patches)

On Fri, Jan 17, 2020 at 10:53:46AM +0000, Anthony PERARD wrote:
> Patch series available in this git branch:
> https://xenbits.xen.org/git-http/people/aperard/xen-unstable.git br.build-system-xen-v2
> 
> series is based on "[XEN PATCH v3 0/6] xen: Kconfig update with few extra"
> 
> v2:
> Rather than taking Kbuild and making it work with Xen, the v2 takes the opposite
> approach of slowly transforming our current build system into Kbuild. That have
> the advantage of keeping all the feature we have and making the patches much
> easier to review. Kconfig update is done in an other patch series.
> 
> v1:
> https://lists.xenproject.org/archives/html/xen-devel/2019-10/msg01609.html
> 
> Hi,
> 
> I have work toward building Xen (the hypervisor) with Linux's build system,
> Kbuild.
> 
> The main reason for that is to be able to have out-of-tree build. It's annoying
> when a build fail because of the pvshim. Other benefit is a much faster
> rebuild, and `make clean` doesn't take ages, and better dependencies to figure
> out what needs to be rebuild.
> 
> So, we are not there yet, but the series already contain quite a few
> improvement and cleanup. More patches are going to be added to the series.
> 
> XXX Known issue
> - make dist-tests is broken. I'll fix that latter.
> - efi build maybe broken (xen doesn't boot on albana which looks like to be one
>   of the uefi host)

With the new patch, and both squash! of v2.1, those two issues are fixed.
    Makefile: Fix install-tests
    squash! xen/build: introduce ccflags-y and CFLAGS_$@
    squash! xen/build: have the root Makefile generates the CFLAGS

I've created a new branch:
https://xenbits.xen.org/git-http/people/aperard/xen-unstable.git br.build-system-xen-v2.1

And a link to an osstest run:
http://logs.test-lab.xenproject.org/osstest/logs/146338/

Cheers,

-- 
Anthony PERARD

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