Re: findstring & ifeq

[John Graham-Cumming]

Ken Mankoff wrote:
> # So... why doesn't this work?
> %.o: %.f
> ifeq ($(findstring $@,$(OBJ)),)
>         @echo not found
> else
>         @echo found
> endif

Because the ifeq is processed when the Makefile is being parsed and not 
when rules are run.  In that case $@ is empty and hence this won't work. 
 You can't use ifeq to change the body of a rule at run time.

But you could use $(if) instead:

    %.o: %.f
        @echo $(if $(findstring $@,$(OBJ)),found,not found)

John.
--
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