> %% Dale King <[EMAIL PROTECTED]> writes:
>
> >> You could do one of two things: use the VPATH variable as a
> >> target-specific (or pattern-specific) variable (I think this will
> >> work).
>
> dk> No, it doesn't appear to work.
>
> Hm. I guess VPATH is parsed early and not re-parsed for each target.
> This could be considered a bug, or at least an area for enhancement.
Well given the track record for how many years we have to live with bugs
without getting a new release (3 years this coming Monday), I'm not holding
my breath.
> >> Or, use a more restrictive pattern for vpath, so instead of:
> >>
> >> vpath %.c ...
> >>
> >> you do something like:
> >>
> >> vpath $(prefix)/%.c ...
> >>
> >> where the prefix variable restricts the values to match the
> >> "current" location, whatever that is.
>
> dk> That doesn't seem to work either.
>
> It will definitely work, if you can compute the proper value of prefix.
> Which you may not be able to do, depending on your environment.
Then maybe I am misunderstanding you. Here is a fuller example where I have
/foo/a.c that should get built into /obj1/a.o and /bar/a.c that gets built
into /obj2/a.o (I just use copy here).
This gives:
$ make
make: *** No rule to make target `/obj1/a.c', needed by `/obj1/a.o'. Stop.
Makefile:
all : /obj1/a.o /obj2/a.o
# This comes from one directory's included makefile
objdir := /obj1
srcs := a.c
src-dirs := /foo
# This is the generic rules that cannot be directory specific
objs := $(addprefix $(objdir)/,$(notdir $(srcs:.c=.o)))
vpath $(objdir)/%.c $(src-dirs)
$(objs) : %.o : %.c
@cp -v $< $@
# This comes from another directory's included makefile
objdir := /obj2
srcs := a.c
src-dirs := /bar
# This is the generic rules that cannot be directory specific
objs := $(addprefix $(objdir)/,$(notdir $(srcs:.c=.o)))
vpath $(objdir)/%.c $(src-dirs)
$(objs) : %.o : %.c
@cp -v $< $@
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