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Re: derived sources and parallel builds
On Mar 29, 2000, Tom Tromey <tromey@cygnus.com> wrote:
>>> I'm skeptical that this approach will work :-(
Alexandre> I still think we should revert to the old behavior of
Alexandre> Makefile depending on BUILT_SOURCES, at the very least, as
Alexandre> a deprecated feature, for backward compatibility.
> This only works for GNU make. So it was never a reliable mechanism to
> begin with.
Good point, I had failed to take this into account.
In this case, I think we should arrange for $(OBJECTS) to depend on
$(BUILT_SOURCES). Hmm, but this would introduce too many
dependencies. So maybe we should use a stamp file that all $(OBJECTS)
depend upon, and that runs $(MAKE) $(BUILT_SOURCES) before it touches
itself. It still wouldn't work in case someone removes one of the
BUILT_SOURCES but leaves the stamp file around, but it could be a
starting point.
--
Alexandre Oliva Enjoy Guaranį, see http://www.ic.unicamp.br/~oliva/
Cygnus Solutions, a Red Hat company aoliva@{redhat, cygnus}.com
Free Software Developer and Evangelist CS PhD student at IC-Unicamp
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