Re: builddir vs. srcdir

[Ralf Wildenhues]

* Harald Dunkel wrote on Thu, Mar 10, 2005 at 09:27:34AM CET:
> Stepan Kasal wrote:
> >On Tue, Mar 08, 2005 at 11:56:56PM +0200, Paul Pogonyshev wrote:
> >
> >>foo.c foo.h : $(srcdir)/foo.list $(PARSE_LIST)
> >>    $(PARSE_LIST) $(srcdir)/foo.list foo.h foo.c    \
> >>      || (rm -f foo.c foo.h ; exit 1)
> >
> >This rule can break with parallel make.
> >
> >You can solve the second issue by adding the dependency:
> >foo.c: foo.h
> 
> Whats about a more general case
> 
> SOMEFILES=a b c d e
> 
> $(SOMEFILES): srcfile
>       buildsomehow srcfile $(SOMEFILES) || (rm -f $(SOMEFILES); false)

Please read 
  info '(automake.info)Multiple Outputs'

which comes with a recent Automake and documents the whole issue very
thoroughly.

Regards,
Ralf