VPATH as a pattern variable

[Martin DAnjou]

Hello,

I do not understand why I get "no rule to make target" with this makefile:

 .SECONDEXPANSION:

comp_pproc_src=d_f.v

d_%.v: VPATH=src_dir
d_%.v: %.v
   touch $@
   echo Made $@

comp_%: $$(comp_pproc_$$*)
   echo Done

all: comp_src

The file called src_dir/f.v does exist. This is make 3.81.

Thanks,
Martin