[Build-common-hackers] CFLAGS and implicit rules

[W. Borgert]

On Fri, Apr 09, 2004 at 11:46:04PM -0400, Colin Walters wrote:
> On Fri, 2004-04-09 at 19:08, W. Borgert wrote:
> > Too bad.  Unfortunately, this approach fits even worse with
> > the make system I have to use ("Continuus").
>
> Sounds scary :)  By the way, the GNU make manual has a section
> "Features" that talks about the extensions supported in GNU Make.  So
> take away all of those and what's left is a make subset that's likely to
> work everywhere.  Just to highlight some things CDBS uses heavily that
> would have to be removed in a version that targets pmake:
>
> * Including other makefiles  (we use this a little ;))

Might not be POSIX, but a lot of make variants to support
it.  '-include' (include, if file is present, otherwise
ignore) is only in GNU make, AFAIK.

> * Pattern rules with %  (i.e. basically all of buildcore.mk)

This seems to be very GNUish.

> * Conditional execution

That's really difficult, because nearly every make variant
has it - but always with a slightly different syntax.

> * Computed variable references

OK, GNU make wins 4:0.

Cheers,
-- 
W. Borgert <debacle@debian.org>, http://people.debian.org/~debacle/