[Fedora-packaging] arched BuildRequires?

[Björn Esser]

Am Donnerstag, den 13.06.2013, 19:09 +0200 schrieb Mattias Ellert:
> tor 2013-06-13 klockan 17:34 +0200 skrev Simone Caronni:
> 
> > 
> > Exactly, here an example of a Koji build done with _isa'ed
> > BuildRequires (taken from the link I've posted before):
> > 
> > $ rpm -qpR libguac-client-vnc-0.6.0-4.fc17.src.rpm 
> > cairo-devel(x86-64)  
> > gnutls-devel(x86-64)  
> > libguac-devel(x86-64) = 0.6.0
> > libvncserver-devel(x86-64)  
> > rpmlib(FileDigests) <= 4.6.0-1
> > rpmlib(CompressedFileNames) <= 3.0.4-1
> > 
> > This means I can't rebuild the src.rpm on an i686. This is wrong.
> 
> If what you say above was true it would be a problem. But it doesn't
> work like that.
> 
> $ uname -p
> x86_64
> $ rpm -q --requires -p globus-common-14.9-3.fc18.src.rpm | grep x86
> globus-core(x86-32) >= 8
> libtool-ltdl-devel(x86-32)
> $ rpm -q --whatprovides 'globus-core(x86-32)' 'libtool-ltdl-devel(x86-32)'
> inget paket tillhandahåller globus-core(x86-32)
> inget paket tillhandahåller libtool-ltdl-devel(x86-32)
> $ rpmbuild --rebuild globus-common-14.9-3.fc18.src.rpm
> 
> ... build succeeds ... because the BRs needed on the build system's architecture are there
> 
> [ellert at localhost ~]$ rpm -q --whatprovides 'globus-core(x86-64)' 'libtool-ltdl-devel(x86-64)'
> globus-core-8.9-6.fc18.x86_64
> libtool-ltdl-devel-2.4.2-7.fc18.x86_64

The _isa-macro _ALWAYS_ evals x86-64 on x86_64, even if the binary-rpm
is build against i686-devel/libs...

Or to be more clear: If you build an rpm on x86_64 against i686 libs the
resulting bin-rpm will _ALWAYS_ provide x86-64-arched.

> The bogus requires in the created source rpm is no reason to write a
> broken spec file.

What will break the spec by removing _isa-macro from BRs?  Is there any
PROVEN reason for this?  I'm NOT talking about the final-Requires in
spec.

Sorry for the double post. :)
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