Here we go.

Makefile

@@ -0,0 +1,35 @@
+CC	?= gcc
+STRIP ?= strip
+CFLAGS ?= -Os
+LDFLAGS += -lxcb
+CFDEBUG = -g3 -pedantic -Wall -Wunused-parameter -Wlong-long\
+		  -Wsign-conversion -Wconversion -Wimplicit-function-declaration
+
+EXEC = bar
+SRCS = bar.c
+OBJS = ${SRCS:.c=.o}
+
+PREFIX?=/usr
+BINDIR=${PREFIX}/bin
+
+all: ${EXEC}
+
+.c.o:
+	${CC} ${CFLAGS} -o $@ -c $<
+
+${EXEC}: ${OBJS}
+	${CC} ${LDFLAGS} -o ${EXEC} ${OBJS}
+	${STRIP} -s ${EXEC}
+
+debug: ${EXEC}
+debug: CC += ${CFDEBUG}
+
+clean:
+	rm -rf ./*.o
+	rm -rf ./${EXEC}
+
+install: bar
+	test -d ${DESTDIR}${BINDIR} || mkdir -p ${DESTDIR}${BINDIR}
+	install -m755 bar ${DESTDIR}${BINDIR}/bar
+
+.PHONY: all debug clean install