Build :
| gcc -c main.c // -c (compile) gcc -c -o target.o main.c |
~$ main.o
~$ target.o
| gcc -o target main.o // -o (output) |
~$ target.exe
option :
| gcc -v -I/usr/local/include -DDEBUG -Wall -W -O2 -L/usr/local/lib -o like like.c -lm |
Make rules :
| target: dependencies ... commands ... |
Example :
| ~$ gcc -c main.c ~$ gcc -c a.c ~$ gcc -c b.c ~$ gcc -o target main.o a.o b.o |
Example by makefile :
| a.o : a.h a.c gcc -c a.c b.o : b.h b.c gcc -c b.c main.o : a.h b.h main.c gcc -c main.c target : a.o b.o main.o gcc -o target a.o b.o main.o |
Example by makefile using macro :
| CC = g++ CXXFLAGS = -Wall -O2 LDFLAGS = SRC_DIR = ./src OBJ_DIR = ./obj INC_DIR = ./include TARGET = test SRCS = $(notdir $(wildcard $(SRC_DIR)/*.cpp)) OBJS = $(SRCS:.cpp=.o) OBJECTS = $(patsubst %.o,$(OBJ_DIR)/%.o,$(OBJS)) DEPS = $(OBJECTS:.o=.d) all: $(TARGET) $(TARGET) : $(OBJECTS) $(CC) $(CXXFLAGS) $(OBJECTS) -o $(TARGET) $(LDFLAGS) $(OBJ_DIR)/%.o : $(SRC_DIR)/%.cpp $(CC) $(CXXFLAGS) -I$(INC_DIR) -c $< -o $@ -MD $(LDFLAGS) .PHONY: clean clean: rm -f $(OBJECTS) $(DEPS) |
Reference