Hi,
First of all, many thanks for your kind support. I have been able to
setup a crossbuild chroot environment for aarch64. I can now configure
and compile qemu using this environment.
Please find a minor observation inlined below and comment if necessary:
On 05/17/2013 07:16 PM, Wookey wrote:
+++ Peter Maydell [2013-05-17 11:19 +0100]:
Making qemu easily cross-compilable is on my list anyway so lets have
a look. Checking the debian package I find a build-deps list as long
as your arm:
Most of these are optional if you're just building
QEMU from a git source tree, as you note.
But at least helpfully commented about options. Which parts of that do
you need? Will 'really basic' do?
The really critical stuff is zlib and glib.
Note that nobody here is asking about "how do I compile
the qemu debian package" -- just building from a source
tree is all that's needed.
Right.
Ideally you'd be able to do apt-get install libglib2.0-dev:arm64 in a
raring chroot (pointing at the arm64 bootstrap/port repo), but I find
that there is currently version skew in libpcrecpp0 and libstdc++6
Now that raring has stopped moving it's worth updating these arm64
builds to match and give a stable build base, so I'll do that today
and see if things get a bit easier, and get back to you.
OK. After I've rebuilt libstdc++6, libffi, libgcc1, libpcre3, and
linux-libc-dev (but not eglibc yet) we get to an installable state.
So I followed the instructions on
https://wiki.linaro.org/Platform/DevPlatform/CrossCompile/arm64bootstrap
to set up a raring chroot.
(And note that the pinning in /etc/apt/preferences.d/bootstrap is still
needed until I rebuild eglibc too, which needs a profile patch
updating, so I've skipped it for now)
(Stop at 'Use with sbuild' because you are not doing that, but
building upstream source directly in the chroot).
If I stop here and exit the sbuild-shell environment right-away, the
following package installations remain temporary.
And I have to re-install them after each execution of "schroot -c
raring-amd64-sbuild" command.
To solve this issue, I donnot exit immediately here and continue with
the following installs within the sbuild-shell environment to make these
changes 'permanent'.
Then I entered the chroot with
schroot -c raring-amd64-sbuild
and inside did:
sudo dpkg --add-architecture arm64
sudo apt-get update
sudo apt-get install libglib2.0-dev:arm64 zlib1g-dev:arm64 libpixman-1-dev:arm64
sudo apt-get install crossbuild-essential-arm64 (27MB of stuff)
sudo apt-get install python
./configure --target-list=arm-softmmu --cross-prefix=aarch64-linux-gnu-
for that configure to work you need
http://patchwork.ozlabs.org/patch/243412/
So that gives a cross-environment that satisfies the qemu configure.
You need other patches from that series for it to actually build, but
I'll leave it to you from here :-)
thats fine ... :)
Thanks to Peter Maydell for supplying qemu runes and patches.
Complain if this doesn't get you going.
Notes:
Don't install sbuild inside the chroot - that can break things.
A couple of wiki pages have been updated in this process, but a lot
more updating is needed to make this properly easy. I notce that the
start page:
https://wiki.linaro.org/Platform/DevPlatform/CrossCompile/CrossbuildingQuickStart
doesn't really cover this case of building 'not-packaged stuff, using
multiarch', and clearly it should.
And the page on 'multiarch crossbuilding' is woefully out of date.
If I was being snarky I might point out that this would already have
been working and up-to-date when you wanted to use it if people hadn't
insisted that this work was not wanted and I should stop. Still, it
didn't take long to get going, and fortunately you don't need anything
that we haven't built yet.
Wookey
Thanks again.
Best Regards,
Mian M. Hamayun
--
Mian-Muhammad Hamayun
Virtual Open Systems
Open Source KVM Virtualization Developments
Multicore Systems Virtualization Porting Services
Web: www.virtualopensystems.com
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