Re: Speeding up the bootstrap build - a quick hack.

[Alan Mackenzie]

Hello, Robert.

On Tue, Jan 18, 2022 at 14:16:33 +0100, Robert Pluim wrote:
> >>>>> On Tue, 18 Jan 2022 11:56:38 +0000, Alan Mackenzie <acm@muc.de> said:


>     >> >  # An old-fashioned suffix rule, which, according to the GNU Make 
> manual,
>     >> >  # cannot have prerequisites.
>     >> >  ifeq ($(HAVE_NATIVE_COMP),yes)
>     >> > -.el.elc:
>     >> > +.el.elc0:
>     >> > +    $(AM_V_ELC)$(emacs) $(BYTE_COMPILE_FLAGS) \
>     >> > +    --exec "(setq load-suffixes '(\".elc0\" \".el\"))" \
>     >> > +    -f batch-byte-compile $<
>     >> > +    mv $<c $@

> I think this would be far cleaner and less fragile if you used an
> order-only prerequisite instead of inventing new suffixes.

Thanks for the reply.

I'm not actually that experienced with make files.  What does "an
orer-only prerequisite" mean?

There was a problem with the current situation where the existence of a
..elc file prevented the native compiler from working.  So I renamed
these early files to .elc0, to prevent them getting in the way.

How might I do this better?

> Robert
> -- 

-- 
Alan Mackenzie (Nuremberg, Germany).