Re: Multibuild - was Re: Fwd: Launching C userland code with rumprun
- From: Antti Kantee <pooka@xxxxxx>
- To: rumpkernel-users@xxxxxxxxxxxxx
- Date: Mon, 22 Jun 2015 07:34:25 +0000
On 21/06/15 20:45, Justin Cormack wrote:
On 21 June 2015 at 14:35, Antti Kantee <pooka@xxxxxx> wrote:
Are you compiling qemu and xen from two different rumprun source trees?
It's currently (unfortunately) not a good idea to use the same source tree
to build for multiple targets. It works if you know what you're doing, but
I cannot advise as good practice when trying to eliminate errors.
What are the issues here?
A bit in the spirit of the scene with Josef of Arimathea's carving in
Monty Python and the Holy Grail, if I could enumerate what the issues
are, I wouldn't bother writing that you need to know what you're doing,
I'd just list the issues.
Come to think of it, I don't think I've ever tried to run both hw and
xen binaries built from the same tree, but just experience in trying to
build both gives a clue that it's not a good idea. David's results seem
to suggest that binaries built that way will not run correctly, at least
for Xen. They do work for hw, as far as I've been able to observe, for
whatever reason.
I filed issue #35 and made the build script refuse to build multiple
platform/machine combos from the same sources until objdir builds are
supported.
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