Re: target specific variables in makefiles

[Neil Roeth <neil@debian.org>]

On Sep  9, Colin Watson (cjwatson@debian.org) wrote:
 > On Mon, Sep 08, 2003 at 07:22:02PM -0400, Neil Roeth wrote:
 > > I recently read about target-specific variables in make, so I thought I could
 > > do this:
 > > 
 > > pkg1-stamp: pkg1
 > > pkg2-stamp: pkg2
 > > 
 > > %-stamp: $(@:%-stamp=%)
 > > 	touch $@
 > > 
 > > pkg1: DH_OPTIONS=-p$@
 > > 	...
 > > 	dh_install
 > > 	dh_installxfonts
 > > 	...
 > > 
 > > pkg2: DH_OPTIONS=-p$@
 > > 	...
 > > 	dh_install
 > > 	dh_installemacsen
 > > 	...
 > > 
 > > and avoid the extra call to make, but I get an error:
 > > "*** commands commence before first target.  Stop."
 > 
 > Lines containing target-specific variables can't be followed by
 > commands, I think, so you need to name the target again:
 > 
 > pkg1: DH_OPTIONS=-p$@
 > pkg1: any-other-prerequisites-of-pkg1
 >         ...
 > 
 > pkg2: DH_OPTIONS=-p$@
 > pkg2: any-other-prerequisites-of-pkg2
 >         ...
 > 
 > If you want a real-life example, I can unashamedly plug the groff
 > package, although I've just noticed that the DH_EXCLUDE := -Ngroff-x11
 > stuff is now obsolete.

Thanks, that did the trick.  Doing "export DH_OPTIONS" is also necessary (you
did that near the top of groff's debian/rules).

-- 
Neil Roeth