Re: make depend problem with hello_SOURCES = ${SRCDIR}/hello.c

[Ralf Wildenhues]

Hi Stepan, Harald,

* Stepan Kasal wrote on Tue, Sep 13, 2005 at 02:21:43PM CEST:
> On Tue, Sep 13, 2005 at 12:58:45PM +0200, Harald Dunkel wrote:
> 
> > > linked_sources = common_interface.c more.c even-more.c
> > > BUILT_SOURCES = $(linked_sources)
> > > $(linked_sources):
> > >         list='$(linked_sources)'; for file in $$list; do \
> > >           rm -f $$file; $(LN_S) '$(INTERFACE_DIR)'/"$$file" "$$file"; \
> > >         done
> 
> Ralf, you seem to forgot that
>       foo bar:
>               cmd..
> is equivalent to two rules:
>       foo:
>               cmd..
>       bar:
>               cmd..

D'oh.  Yes, thank you.

> Moreover, the BUILT_SOURCES hack is necessary only for files which cannot
> be handled by the normal dependencies, typically for headers.

You don't need to copy headers.  Just adjust the include path, as Harald
had already done in one of his earlier examples.

> So I'd suggest:
> 
> linked_sources = common_interface.h common_interface.c more.c even-more.c
> BUILT_SOURCES = common_interface.h
> $(linked_sources):
>       $(LN_S) '$(INTERFACE_DIR)/$@' '$@'
> CLEANFILES = $(linked_sources)

So you can leave out the BUILT_SOURCES line completely.
But you need to "rm -f '$@'" before invoking $(LN_S).
Thanks for the other corrections, by the way.

And yes: I for one have neither the time, nor the ability, nor access
to make changes to GNU Automake.  There is a reason for an AUTHORS file,
and the bug-* lists and the Automake GNATS bug database.

Cheers,
Ralf