Re: using VPATH in depend2.am?

[Harald Dunkel]

Hi Stepan,

Stepan Kasal wrote:
> 
> So I suppose something like this
> 
>       `IFS=:; for d in '' '$(srcdir)' $(VPATH); do \
>               test -n "$$d" && d=$$d/; \
>               test -f "$$d"%SOURCE% && echo "$$d" && break; \
>        done`%SOURCE%
> 
> Could you test whether this works for you?
> 

Something like

        IFS=:; for d in a:b; do echo $d; done

works for Sun's /bin/sh, but not for Bash 2.05b (even if you
use --posix). The Bash folks say that this has been done to
fix a security hole.

I have another concern: In your version $(srcdir) gets
a higher priority than the $(VPATH) set in Makefile.am. If
Automake instantiates the suffix rules to generate *.o files,
then this is different, AFAICS.

So how about this?

        `IFS=:; x=":$(VPATH)"; \
        for d in $$x; do \
                test -n "$$d" && d=$$d/; \
                test -f "$$d"%SOURCE% && echo "$$d" && break;
        done`%SOURCE%

It allows the writer of Makefile.am to completely ignore
$(srcdir), if he wants to.


Regards

Harri