Re: Getting the target of an implicit rule within the rule

[Ronald Landheer-Cieslak]

Paul D. Smith wrote:

> %% Ronald Landheer-Cieslak <address@hidden> writes:
>
>   rl> %.d : $(srcdir)/$(subst .d,.c,$@)
>   rl>        blah
>
>   rl> $@, however, is empty here (as the docs duely indicate).
>
> Why not just use the obvious:
>
>     %.d : $(srcdir)/%.c
>
> ?  That's what pattern rules are for, after all...
because the obvious doesn't work if there's a pathname in the target 
filename (i.e. target == dir/file.d, prereq would become 
dir/$(srcdir)/file.c because the stem of the pattern is "file", not 
"dir/file").

rlc