# specify all source files here
SRCS = a.c b.c

# specify target here (name of executable)
TARG = ab

# specify compiler, compile flags, and needed libs
CC = gcc
OPTS = -Wall -O
LIBS = -lm

# this translates .c files in src list to .o’s
OBJS = $(SRCS:.c=.o)

# all is not really needed, but is used to generate the target
all: $(TARG)

# this generates the target executable
$(TARG): $(OBJS)
    $(CC) -o $(TARG) $(OBJS) $(LIBS)

# this is a generic rule for .o files
%.o: %.c
    $(CC) $(OPTS) -c $< -o $@

# and finally, a clean line
clean:
    rm -f $(OBJS) $(TARG)