[Fedora-packaging] arched BuildRequires?

[Panu Matilainen]

On 06/13/2013 08:20 PM, Björn Esser wrote:
>
> 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.

No. %{_isa} evaluates to the target arch of the build:

[pmatilai at localhost SPECS]$ rpmspec -q --buildrequires rpm.spec|head -10
libdb-devel
libdb-devel(x86-64)
fakechroot
redhat-rpm-config
gawk
elfutils-devel(x86-64) >= 0.112
elfutils-libelf-devel(x86-64)
readline-devel(x86-64)
zlib-devel(x86-64)
nss-devel(x86-64)
[pmatilai at localhost SPECS]$ rpmspec -q --buildrequires --target i686 
rpm.spec|head -10
libdb-devel
libdb-devel(x86-32)
fakechroot
redhat-rpm-config
gawk
elfutils-devel(x86-32) >= 0.112
elfutils-libelf-devel(x86-32)
readline-devel(x86-32)
zlib-devel(x86-32)
nss-devel(x86-32)

	- Panu -