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Makefile add text to variable in rule

Hi!

I have a problem with a makefile. This is a very special kind of makefile and I just want to make a temporary solution.

When the Makefile shall link the program I want to include an additional file to a global variable called OBJS.

The lines look as follows:

bin_link: $(OBJS) $(WHATEVERLIB1) $(WHATEVERLIB2)
@echo "Linking"
@$(LD) $(LDFLIB) $(OBJS) $(LIBS) -o $(PROGRAM)
@echo "done"

So I would like to add a filename to OBJS before linking, such as test.o like this for example:
OBJS=$(OBJS) test.o

But I dont get it to work, how should I do this?

Really thankfull for answers!

Code:

bin_link: OBJS += test.o

bin_link: $(OBJS) $(WHATEVERLIB1) $(WHATEVERLIB2)

        echo "Linking"

        $(LD) $(LDFLIB) -o $@ $^

PS: "$(LDFLIB)" should be "$(LDFLAGS)" methinks.