On 8/3/07, cbrown <[EMAIL PROTECTED]> wrote:
...
> $(PROJECTS):
> ifeq ($(MAKECMDGOALS),clean)
> @echo "($@,$(CURR))"
> ifeq ($@,$(CURR))
> @echo gonna clean $@
> else
> @echo NOT gonna clean $@
> endif
> else
> @echo gonna $(MAKECMDGOALS) $@
> endif
>
> When I execute "make CURR=a clean", I get;
>
> (b,a)
> NOT gonna clean b
> (a,a)
> NOT gonna clean a
>
> How come the "ifeq ($@,$(CURR))" doesn't work?
Because make's conditionals are evaluated during the parse of the
makefile, while target-specific variables like $@ are only set during
the evaluation of the target's rules.
> Is there an easier path to my goal?
Yes: use a shell conditional for the test of $@:
$(PROJECTS):
ifeq ($(MAKECMDGOALS),clean)
@echo "($@,$(CURR))"
@if [ x"$@" = x"$(CURR)" ]; then \
echo gonna clean $@; \
else \
echo NOT gonna clean $@; \
fi
else
@echo gonna $(MAKECMDGOALS) $@
endif
Note the placement of semicolons and backslashes and that the leading
'@' is only on the first line of the multi-line command.
Philip Guenther
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