Setting up configurable spec files

[Scot Mc Pherson <scot linuxfromscratch org>]

I want to create a specfile where I can change build time instructions by 
passing a command line argument.  Essentially i want to create a macro that 
will be expanded when the command line option is passed. I imaging it would 
be some poptish thing, but I can't seem to fidn the documentation for passing 
antyhing other than --with-stuff  type arguments, which isn't exactly what I 
want to do according to the documentation I have.


I would like to so something like:

rpmbuild -bb --prefix=/new/path file.spec

So that the --prefix path would be inserted before any other path information 
using some macro.

Any ideas?


I have the new RedHat Press RPM book that was released this year.

-- 
Scot Mc Pherson
Linux From Scratch
http://www.linuxfromscratch.org/~scot/