Date: Tue, 20 Mar 2012 12:20:08 +0200 From: Konstantin Belousov <kostikbel@gmail.com> To: Baptiste Daroussin <bapt@freebsd.org> Cc: current@freebsd.org Subject: Re: ABI/architecture identification for packages Message-ID: <20120320102008.GH2358@deviant.kiev.zoral.com.ua> In-Reply-To: <20120320091935.GF1692@azathoth.lan> References: <20120319213508.GA1692@azathoth.lan> <20120320091935.GF1692@azathoth.lan>
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On Tue, Mar 20, 2012 at 10:19:36AM +0100, Baptiste Daroussin wrote:
> On Mon, Mar 19, 2012 at 10:35:08PM +0100, Baptiste Daroussin wrote:
> > Hi all,
> >
> > In order to identify architectures I need to find a uniq id for every
> > possibilities (for pkgng)
> >
> > here is the identification I propose:
> >
> > arch-class-os-majorversion(-archi_specific_extension)
> >
> > arch can be one of the following:
> >
> > - x86 for i386 and amd64 (discussed with kib)
> > - powerpc for powerpc and powerpc64
> > - arm
> > - mips
> > - sparc
> >
> > class may be:
> > - 32 bits
> > - 64 bits
> >
> > os will always be freebsd :) (lower case)
> >
> > majorversion the freebsd major version (10 9 8)
> >
> > achi_specific_extension currently only mips and arm are concerned,
> > for arm could be:
> > el_oabi
> > eb_oabi
> > el_eabi
> > eb_eabi
> >
> > (I don't know how to get arm version or hardfp/softfp from the elf)
> >
> > for mips I don't know much.
> >
> > for ia64, I have strictly no idea what I should set.
> >
> > Everything is read from the elf file
> >
> > for example:
> > x86-64-freebsd-10
> > x86-32-freebsd-8
> > arm-32-freebsd-10-el_oabi
> >
> > Please help me to improve this to get the better identification to have the best
> > possible to determine which package can be installed where.
> >
> > while proposing information please tell me how to get the information
> > (dynamically)
> >
> > regards,
> > Bapt
>
> Another question (by rwatson) that comes here is should we keep the architecture
> names that freebsd uses to avoid confusion or should we try to use more accurate
> names?
>
> powerpc-64-freebsd-9 -> powerpc64-64-freebsd-9
> x86-32-freebsd-9 -> i386-32-freebsd-9
> x86-64-freebsd-9 -> amd64-64-freebsd-9
i386-32 and amd64-64 is weird and confusing.
IMO, you should go either with x86-{32,64} names, or with i386/amd64,
not with a mix.
> etc.
>
> An example of implementation can be find here:
> https://github.com/pkgng/pkgng/blob/master/libpkg/pkg_elf.c#L157
>
> PS: Feel free to submit fixes/improvements to the code :)
>
> regards,
> Bapt
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