Re: %{expand:...} documentation

[Jos Vos <jos xos nl>]

On Mon, Aug 27, 2007 at 02:35:14PM -0400, Jeff Johnson wrote:

> The macro primitive %{expand:...} is like eval in shell.

That's what I thought...

> > When browsing through spec files, I have the impression that it is
> > unnecessarily used in a lot of cases.
> 
> Likely.

Just some excerpts from RHEL5 spec files (some are even used frequently):

  %{expand: %%define pyver %(python -c 'import sys;print(sys.version[0:3])')}

  %{expand: %%define build_with_freetype %{?_with_freetype:1}%{!?_with_freetype:0}}

I think this is an example of proper use (as there is a recursion), right?

  %{expand: %%define _includedir %{_includedir}/%{name}}

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--    Jos Vos <jos xos nl>
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