Xen devel - Apr 2005 - [PATCH] optionally skip ioemu in tools build

I''m not sure if this has been discussed already, but I think it should
be the default to skip building tools/ioemu. Skipping ioemu solves the
problems associated with building on machines that do not have X, and
saves time for developers who do not need io emulation. Attached patch
to tools/Makefile will skip ioemu by default unless the BUILD_IOEMU
environment variable is set. 


signed-off-by: Mike D. Day <ncmike@us.ibm.com>

-- 
Mike D. Day
STSM and Architect, Open Virtualization
IBM Linux Technology Center
3039 Cornwallis Road
Research Triangle Park, NC  27709
Phone: (919) 543-4283
ncmike@us.ibm.com


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> I''m not sure if this has been discussed already, but I think 
> it should be the default to skip building tools/ioemu. 
> Skipping ioemu solves the problems associated with building 
> on machines that do not have X, and saves time for developers 
> who do not need io emulation. Attached patch to 
> tools/Makefile will skip ioemu by default unless the 
> BUILD_IOEMU environment variable is set. 
I think my preference would be to do a full build by default, so we get
alerted to build failures sooner rather than later. I know there aren''t
too many VT-x users right now, but it''s going to be an important part
of
Xen in a few months time when the boxes start shipping. It takes 20
seconds to build ioemu on my machine, so its not really slowing the
build cycle down very much.

Perhaps we should just have a patch that skips it if the host doesn''t
have X or g++ ?

Ian

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On Tue, 19 Apr 2005, Ian Pratt wrote:
> > I''m not sure if this has been discussed already, but I think
> > it should be the default to skip building tools/ioemu.
> > Skipping ioemu solves the problems associated with building
> > on machines that do not have X, and saves time for developers
> > who do not need io emulation. Attached patch to
> > tools/Makefile will skip ioemu by default unless the
> > BUILD_IOEMU environment variable is set.
>
> I think my preference would be to do a full build by default, so we get
> alerted to build failures sooner rather than later. I know there
aren''t
> too many VT-x users right now, but it''s going to be an important
part of
> Xen in a few months time when the boxes start shipping. It takes 20
> seconds to build ioemu on my machine, so its not really slowing the
> build cycle down very much.
>
> Perhaps we should just have a patch that skips it if the host
doesn''t
> have X or g++ ?
Er, unless you are linking to features used by those tools, then don''t
skip
it.  Think cross-compiling, etc.

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On Mon, 2005-04-18 at 18:22 -0500, Adam Heath wrote:
> > Perhaps we should just have a patch that skips it if the host
doesn''t
> > have X or g++ ?
> 
> Er, unless you are linking to features used by those tools, then
don''t skip
> it.  Think cross-compiling, etc.
How about inverting the original patch to build ioemu by default, but
skipping ioemu if a variable is defined. That way a developer can skip
ioemu but must explicitly take action to do so. 

Mike 

signed-off-by: Mike Day <md@soft-hackle.net>


 
//------------------------------------------------------------//

Mike Day
md@soft-hackle.net

//------------------------------------------------------------//





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> > Er, unless you are linking to features used by those tools, 
> then don''t 
> > skip it.  Think cross-compiling, etc.
> 
> How about inverting the original patch to build ioemu by 
> default, but skipping ioemu if a variable is defined. That 
> way a developer can skip ioemu but must explicitly take 
> action to do so. 
Sure, will apply.

Ian 


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