how to install bluebugger

[ramazani]

hi i was wondering if anyone could explain this to me

CC = gcc
FLAGS = -O2
D_FLAGS = -g -Wall # -pedantic #-DDEBUG
LIBS = -lbluetooth
PROG = bluebugger
SOURCES = bb.c bt.c at.c wrap.c debug.c

.PHONY: default clean
.c.o:
${CC} ${FLAGS} ${D_FLAGS} -c $<

default: ${SOURCES}
${CC} ${FLAGS} ${D_FLAGS} -o ${PROG} ${SOURCES} ${LIBS}

clean:
rm -f ${PROG} *.o *~

how should i understand this