更改makefile的头文件检测

Question

我的makefile未检测到头文件中的更改。如何将此功能添加到我的makefile中？这是我的makefile：

CPP  = g++
CC   = gcc
RES  = 
OBJ  = obj/main.o obj/customfunc1.o obj/customfunc2.o $(RES)
LINKOBJ  = obj/main.o obj/customfunc1.o obj/customfunc2.o $(RES)
LIBS =   
INCS =  -I"lib1/inc"  -I"lib2/inc" 
CXXINCS =  -I"lib1/inc"  -I"lib2/inc" 
BIN  = out
CXXFLAGS = $(CXXINCS)  
CFLAGS = $(INCS)  
RM = rm -f

.PHONY: all all-before all-after clean clean-custom

all: all-before $(BIN) all-after


clean: clean-custom
${RM} $(OBJ) $(BIN)

$(BIN): $(OBJ)
$(CC) $(LINKOBJ) -o $(BIN) $(LIBS)

obj/main.o: main.c
$(CC) -c main.c -o obj/main.o $(CFLAGS)

obj/customfunc1.o: lib1/customfunc1.c
$(CC) -c lib1/customfunc1.c -o obj/customfunc1.o $(CFLAGS)

obj/customfunc2.o: lib2/customfunc2.c
$(CC) -c lib2/customfunc2.c -o obj/customfunc2.o $(CFLAGS)

Answer 1

头文件必须与其他依赖项一起列出。 E.g：

CPP  = g++
CC   = gcc
RES  = 
OBJ  = obj/main.o obj/customfunc1.o obj/customfunc2.o $(RES)
LINKOBJ  = obj/main.o obj/customfunc1.o obj/customfunc2.o $(RES)
LIBS =   
INCS =  -I"lib1/inc"  -I"lib2/inc" 
CXXINCS =  -I"lib1/inc"  -I"lib2/inc" 
BIN  = out
CXXFLAGS = $(CXXINCS)  
CFLAGS = $(INCS)  
RM = rm -f

.PHONY: all all-before all-after clean clean-custom

all: all-before $(BIN) all-after


clean: clean-custom
${RM} $(OBJ) $(BIN)

$(BIN): $(OBJ)
$(CC) $(LINKOBJ) -o $(BIN) $(LIBS)

obj/main.o: main.c header1.h header2.h
$(CC) -c main.c -o obj/main.o $(CFLAGS)

obj/customfunc1.o: lib1/customfunc1.c lib1/header.h
$(CC) -c lib1/customfunc1.c -o obj/customfunc1.o $(CFLAGS)

obj/customfunc2.o: lib2/customfunc2.c lib2/header.h
$(CC) -c lib2/customfunc2.c -o obj/customfunc2.o $(CFLAGS)