Adding new prerequisites to a target

[Bhaskar G]

Hi,

I would like to add a new prerequisite
to the rule all, I can achieve this as mentioned below. I would like
to know if there is any other way around
to achieve this. I am using gmake 3.80 in linux.

gmake -f bg1.mk NEWRULE=c
a
b
c
all

gmake NEWRULE=c

all: a b $(NEWRULE)
        @echo
$@

a b:
        @echo
$@
        
$(NEWRULE):
        @echo
$@

Thanks and Regards,
Bhaskar