Makefile is not creating a directory - c

Question

Teacher gave us this makefile for compiling two C files and storing the objects into a directory called object. It compiles the programs fine however it doesn't store their objects into the directory, and it also doesn't even create the directory. Not sure what to do and could really use some help.
This is my make file
CC = clang
CFLAGS = -g -Wall
OBJDIR = object
HDRS = $(wildcard *.h)
SRCS = $(wildcard *.c)
OBJS = $(addprefix $(OBJDIR)/, $(SRCS:.c=.o))
.PHONY: all
all: client server
# WARNING: must have a tab before each definition
$(OBJDIR)/client.o: client.c $(HDRS) $(OBJDIR)
$(CC) $(CFLAGS) -c client.c -o object/client.o
$(OBJDIR)/server .o: server.c $(HDRS) $(OBJDIR)
$(CC) $(CFLAGS) -c server.c -o object/server.o
$(OBJDIR)/%.o: %.c $(HDRS) $(OBJDIR)
$(CC) $(CFLAGS) -c $*.c -o object/$*.o
$(OBJDIR):
mkdir $(OBJDIR)
.PHONY: clean
clean:
rm -f $(TARGET) $(OBJS)

Answer 1

All I had to do was add multiple targets to the makefile and change all to target the targets
CC = clang
CFLAGS = -g -Wall
# TODO: rename the target to something meaningful!
TARGET = client server
OBJDIR = object
HDRS = $(wildcard *.h)
SRCS = $(wildcard *.c)
OBJS = $(addprefix $(OBJDIR)/, $(SRCS:.c=.o))
.PHONY: all
all: $(TARGET)
# WARNING: *must* have a tab before each definition
$(TARGET): $(OBJDIR) $(OBJS)
$(CC) $(CFLAGS) $(OBJDIR)/protocol.o $(OBJDIR)/$#.o -o $#
$(OBJDIR)/%.o: %.c $(HDRS) $(OBJDIR)
$(CC) $(CFLAGS) -c $*.c -o object/$*.o
$(OBJDIR):
mkdir $(OBJDIR)
.PHONY: clean
clean:
rm -f $(TARGET) $(OBJS)