Fwd: Re: re bug 638959: gmp multiarch support - why not -dev too?

[Steve M. Robbins]

Hello Julien,

On Wed, May 23, 2012 at 09:59:14AM +0200, Julien Cristau wrote:
> On Tue, May 22, 2012 at 22:45:23 -0500, Steve M. Robbins wrote:
> 
> > > > and each -dev has its own architecture-dependent <gmp-arch.h> file.
> > 
> > Uh, I think this line misguided you; "arch" was meant to be a variable,
> > not the literal string "arch".
> > 
> > What I wanted to say is that at build time, architecture $ARCH creates
> > a header gmp-$ARCH.h.  So there is currently a different set of files
> > in the -dev package for each architecture.  
> > 
> I think that's fine, as long as no two debian architectures have the
> same value for $ARCH (or their gmp-$ARCH.h is the same).

Yes, that is the case: each architecture has its own value of $ARCH.
I'm going to have a closer look to be certain no other headers vary by
architecture.


> > I don't know how to create a "Multi-Arch Same" -dev package without
> > moving gmp-$ARCH.h somewhere else.  Maybe creating a new arch-specific
> > package just for the one file?  Ugh.  The other idea I had was to put
> > it into libgmp10, but that violates the rule against containing files
> > whose name does not vary with the SOVERSION (policy 8.2).  Any ideas?
> > 
> "Multi-Arch: same" packages are allowed to (and often do) have different
> file lists on each arch.  The restriction is that any file name that
> *is* shared among architectures has the exact same contents.

Hey -- that's good to know!  If this is indeed the case, then I'll have a
look at making gmp's -dev packages multi-arch same.

It would be nice if the wiki was more clear what is meant when it 
says:

    If your -dev package contains headers which vary across
    architectures then it cannot be marked as Multi-Arch: same until a
    policy decision is made about architecture-dependant headers and
    the toolchain is updated.

I interpreted "headers which vary" more strictly than Julien did.

Cheers,
-Steve


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