python3 rpm macros not available without python3-devel installed

[Robin Lee]

The main point I want to get is to set a proper python(abi) requirement at
buildtime without using hard version number at all.
%{?!py3_ver: %global py3_ver 3.2}
Doing so of course will make the package built. But that uses a hard version
number.

I now suggest the requester to make a phantom file to get what we want.
See this patch:
https://bugzilla.redhat.com/attachment.cgi?id=447458&action=diff

Robin

On Thu, Sep 16, 2010 at 12:17 AM, Toshio Kuratomi <a.badger at gmail.com>wrote:

> On Wed, Sep 15, 2010 at 07:25:49PM +0800, Robin Lee wrote:
> > For a more concrete example:
> https://bugzilla.redhat.com/show_bug.cgi?id=567348
> > I want to set the python(abi) requirement of the subpackage at buildtime.
> So, I
> > want to set it like this:
> > Requires: python(abi) = %{py3_ver}
> >
> > But when build it, it will fail with the following output:
> > $ rpmbuild -bp dreampie.spec
> > Building target platforms: i686
> > Building for target i686
> > sh: python3: command not found
> > sh: python3: command not found
> > sh: python3: command not found
> > error: line 46: Version required: Requires:   python(abi) =
> >
> > Even though python3-devel has been added as BR.
> >
> I think that where you're running into this problem is important.  It's
> when
> koji is constructing the srpm, isn't it?  at that stage, koji needs to
> parse the spec file and it's running into the "Requires foo =\n" and
> throwing that error.
>
> I think that conditionally defining a py3_ver macro in the spec file will
> do
> what you wnat.  That way, when the package is actually built, the
> python3-devel pakage will be present and your conditional will not set the
> macro.  but when building the srpm and python3-devel is missing, it will.
>
> Something like this:
> %{?!py3_ver: %global py3_ver 3.2}
>
> would work.  I'm not sure of the safest thing that we can use there and
> still not run into problems when building the srpm.
>
> -Toshio
>
> > On Wed, Sep 15, 2010 at 7:06 PM, Ignacio Vazquez-Abrams <
> ivazqueznet at gmail.com>
> > wrote:
> >
> >     On Wed, 2010-09-15 at 18:22 +0800, Robin Lee wrote:
> >     > python3 rpm macros not available without python3-devel installed.
> >     > 'rpmbuild --viewrc' will show you.
> >     >
> >     > So if you use the python3 macros to define another macro and you
> have
> >     > no python3-devel installed, you must fail.
> >     >
> >     > So, how to define, for example, a %py3_ver macro for the major
> version
> >     > of Python3? Must yum be used?
> >     >
> >     > Robin
> >
> >     Adding a "BuildRequires: python3-devel" should be enough to pull them
> >     in.
> >
> >     --
> >     Ignacio Vazquez-Abrams <ivazqueznet at gmail.com>
> >
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> >
> >
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