makefile question# Programming - 葵花宝典
d*e
1 楼
it's GNU make3.8
if there're 3 source files in 3 sub dir:(current dir is /proj)
/proj/A/a.c
/proj/B/b.c
/proj/C/c.c
/proj/obj
makefile in /proj:
################
DIR1 = ./A
DIR2 = ./B
DIR3 = ./C
OBJDIR = ./obj
VPATH=.:$(DIR1):$(DIR2):$(DIR3):$(OBJDIR)
#default target, link all objs to exe
test: a.o b.o c.o
g++ $^ -o [email protected]
# compile cpp and put objs in OBJDIR
%.o : %.cpp
g++ -c $^ -o $(OBJDIR)/[email protected]
################
problem:
first time run: make test, all 3 object files are created and save
if there're 3 source files in 3 sub dir:(current dir is /proj)
/proj/A/a.c
/proj/B/b.c
/proj/C/c.c
/proj/obj
makefile in /proj:
################
DIR1 = ./A
DIR2 = ./B
DIR3 = ./C
OBJDIR = ./obj
VPATH=.:$(DIR1):$(DIR2):$(DIR3):$(OBJDIR)
#default target, link all objs to exe
test: a.o b.o c.o
g++ $^ -o [email protected]
# compile cpp and put objs in OBJDIR
%.o : %.cpp
g++ -c $^ -o $(OBJDIR)/[email protected]
################
problem:
first time run: make test, all 3 object files are created and save
