Re: Evaluating macros from outside a spec file

[Jeff Johnson <jbj redhat com>]

On Tue, Aug 24, 2004 at 09:37:28PM +0200, Simon J Mudd wrote:
> I would like to evaluate the macro expansion of values defined in a spec 
> file from *outside* of the rpmbuild procedure.
> 
> A simple example in a shell script would be to evaluate %{_sourcedir}
> 
> $ rpm --eval '%{_sourcedir}'
> 
> This is fine and works as expected when %{_sourcedir} itself contains no 
> macro names.
> 
> However in my ~/.rpmmacros I have %_sourcedir defined as follows:
> 
> %_sourcedir     %{_topdir}/SRC/%{name}
> 

Ummm, %name is pkg dependent, as you have discovered.

> Again this works correctly when building the rpm, but I need the correct 
> value of %{_sourcedir} as defined in the spec file I am using, but I need 
> to evaluate it from a shell script.
> 
> There is an rpm option --specfile XXXX but neither of the following works:
> 
> $ rpm --eval '%{_sourcedir}' --specfile /path/to/specfile.spec
> $ rpm --specfile /path/to/specfile.spec --eval '%{_sourcedir}'
> 

Of course they don't work, --eval is immediate.

Try (if you must, there's certainly easier ways to get a path):

rpm --define "name `rpm -q --qf '%{name}' --specfile /path/to/specfile.spec`" --eval '%{_sourcedir}'

> Is there any way to extract the correct value of %_sourcedir (or any 
> other macro defined this way)?
> 

Modulo typos and quoting, this should display the path that you desire.

73 de Jeff

-- 
Jeff Johnson	ARS N3NPQ
jbj@redhat.com (jbj@jbj.org)
Chapel Hill, NC