Subject: Re: [PATCH] t0090: mark add-interactive test with PERL prerequisite

From: Jeff King <[email-masked]>
Date: Tue, 18 Nov 2014 13:44:02 -0500

On Tue, Nov 18, 2014 at 10:38:38AM -0800, Jonathan Nieder wrote:

> Reviewed-by: Jonathan Nieder <[email-masked]>

Thanks.

> > +# This makes sure we depend on the NO_PERL setting itself.
> > +$(patsubst %.perl,%,$(SCRIPT_PERL)): GIT-BUILD-OPTIONS
> > +
> >  ifndef NO_PERL
> >  $(patsubst %.perl,%,$(SCRIPT_PERL)): perl/perl.mak
> 
> Why do these repeat the 'patsubst ...' expression instead of using
> SCRIPT_PERL_GEN, by the way?

Dunno. I just cargo-culted from the context lines.

> -- >8 --
> Subject: Makefile: simplify by using SCRIPT_{PERL,SH}_GEN macros
> 
> SCRIPT_PERL_GEN is defined as $(patsubst %.perl,%,$(SCRIPT_PERL)) for
> use in targets like build-perl-script used by makefiles in
> subdirectories that override SCRIPT_PERL (see v1.8.2-rc0~17^2,
> "git-remote-mediawiki: use toplevel's Makefile", 2013-02-08).
> 
> The same expression is used in the rules that actually write the
> generated perl scripts, and since this rules were introduced before
> SCRIPT_PERL_GEN, they use the longhand instead of that macro.  Use the
> macro to make reading easier.
> 
> Likewise for SCRIPT_SH_GEN.  The Python rules already got the same
> simplification in v1.8.4-rc0~162^2~8 (2013-05-24).

This makes sense, and looking over the Makefile, I don't see how it
could cause any bad side effects.

Minor nit:

  s/this rules/these rules/

in your commit message. Otherwise:

  Reviewed-by: Jeff King <[email-masked]>

-Peff