Re: Architectures (Operating Systems and CPU Architectures)
Russ and Steve:
Thank you both for your replies.
I'm going to have to spend some time considering what you have both
said, and try to devise a clever way of representing the platform
information. In terms of maintainability I don't think I have much of
a problem there, since I'm using a Perl script that loads Dpkg::Arch
and gets architecture information the same way `dpkg-architecture -L'
does, and writes corresponding C code. It does mean I'll have to
update code if there are new accepted platforms, but I'm prepared to
do so. I don't anticipate it'll happen all too often anyway.
I understand the syntax and semantic differences here. I am writing a
parser for control files, and I'd like it to accept any valid syntax,
but at least warn people if there is invalid semantics, using the
information culled from dpkg-architecture.
At the very least, such a feature will give developers a warning that
they made a typo in an architecture name, which could prevent a
disaster further down the road.
Thanks again for all of your help with the various issues. I
particularly appreciate Russ' patience explaining things to me
clearly, and considering my ideas too.
Cheers,
Jonathan
On Fri, Jun 26, 2009 at 12:56 AM, Steve Langasek<vorlon@debian.org> wrote:
> On Thu, Jun 25, 2009 at 07:23:58PM -0700, Russ Allbery wrote:
>> > My question is, does anyone know of cases where a given operating
>> > system and architecture does not constitute a valid platform (ie,
>> > Architecture in the d/control file sense).
>
>> armel and lpia are special cases and don't combine with other kernels
>> from dpkg's perspective, which explains your count difference. I forget
>> off-hand why this is.
>
> "armel" is a Linux-specific successor to "arm" with a different ABI.
>
> "lpia" is arguably appropriate to pair with other kernels beside Linux since
> the instruction reordering is not Linux-specific, so perhaps excluding lpia
> was an oversight.
>
> --
> Steve Langasek Give me a lever long enough and a Free OS
> Debian Developer to set it on, and I can move the world.
> Ubuntu Developer http://www.debian.org/
> slangasek@ubuntu.com vorlon@debian.org
>
>
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