Makefile two variants of one executable dependent on make run - makefile

Question

I am having a lot of trouble with figuring out how to make it so that I can make two executables for client dependent on how I run make. When running just "make" I want client to be like so:
client: client.o open.o close.o
gcc -g -o client client.o open.o close.o
and then when I run "make normal" I want client to be like this:
client: client.o
gcc -g -o client client.o
I just have no idea how to go about doing this, I have been at this for a while and haven't found anything that is simple and helpful. The entire makefile is below to put it all in context.
all: client host tstWrappers
client: client.o open.o close.o
gcc -g -o client client.o open.o close.o
client.o: client.c
gcc -g -c client.c
host: host.o
gcc -g -o host host.o
host.o: host.c
gcc -g -c host.c
tstWrappers: tstWrappers.o open.o close.o
gcc -g -o tstWrappers tstWrappers.o open.o close.o
tstWrappers.o: tstWrappers.c
gcc -g -c tstWrappers.c
open.o: open.c
gcc -g -c open.c
close.o: close.c
gcc -g -c close.c
clean:
rm -f client host client.o host.o tstWrappers tstWrappers.o open.o close.o

Answer 1

The simplest thing to do here is likely just to duplicate the target:
client: client.o open.o close.o
gcc -g -o $# $^
client-normal: client.o
gcc -g -o $# $^
and then run make client-normal to generate a client-normal binary.
(Notice that I replaced the manually listed output and input files with the appropriate Automatic Variables to avoid duplication.)
If you wanted to use make and make MODE=normal (or similar) then you could do this instead:
ifneq (normal,$(MODE))
EXTRA_OBJECTS := open.o close.o
endif
client: client.o $(EXTRA_OBJECTS)
gcc -g -o $# $^