首先,我的文件树是这样的。
cub3d
|---- includes
| |---- cub3d.h
|---- libft
| |---- Makefile
| |---- libft.a
| |---- includes
| | |---- libft.h
| |---- obj
| | |---- objectfile for libft library
| |---- srcs
| | |---- sourcefile for libft library
|---- minilibx
| |---- all of file for minilibx libarary(.a, .h, .c ...etc...)
|---- obj
| |---- main.o
|---- srcs
| |---- main.c
|---- Makefile
我的makefile就是这样。
.PHONY: all clean fclean re
NAME = test
CC = gcc
CFLAGS = -Wall -Wextra -Werror -I $(INC_DIR)\
I$(LIBFT_INC) -I $(MLX_INC)
SRC_DIR = ./srcs/
SRCS = $(addprefix $(SRC_DIR), $(SRC))
SRC = main.c
OBJ_DIR = ./obj/
OBJS = $(addprefix $(OBJ_DIR), $(OBJ))
OBJ = $(SRC:.c=.o)
INC_DIR = includes
LIBFT_DIR = libft
LIBFT_INC = libft/includes
LIBFT_LIB = -L $(LIBFT_DIR) -lft
MLX_DIR = minilibx
MLX_INC = $(MLX_DIR)
MLX_LIB = -L $(MLX_DIR) -lmlx -lm -framework OpenGL\
-framework AppKit
all: libft_make minilibx_make $(NAME)
$(NAME): $(OBJ_DIR) $(OBJS)
@$(CC) $(CFLAGS) -o $@ $(OBJS) $(LIBFT_LIB) $(MLX_LIB)
$(OBJS): $(SRCS)
@$(CC) $(CFLAGS) -o $@ -c $(SRCS) $(LIBFT_LIB) $(MLX_LIB)
$(OBJ_DIR):
@mkdir -p $(OBJ_DIR)
libft_make:
@make -C libft
minilibx_make:
@make -C minilibx
clean:
@rm -f $(OBJS)
@rm -rf $(OBJ_DIR)
@make -C libft/ clean
@echo "$(_RED)'"libft/$(OBJ_DIR)"' has been deleted. $(_END)"
@echo "$(_RED)'"$(OBJ_DIR)"' has been deleted. $(_END)"
fclean: clean
@rm -f $(NAME)
@make -C libft/ fclean
@echo "$(_RED)'"libft.a"' has been deleted. $(_END)"
@echo "$(_RED)'"$(NAME)"' has been deleted. $(_END)"
rma: clean fclean
re: fclean all
make -n
make -C libft
make -C minilibx
gcc -Wall -Wextra -Werror -I includes -I libft/includes -I minilibx -o obj/main.o -c srcs/main.c -L ./libft -lft -L minilibx -mlx -lm -framework OpenGL -framework Appkit
gcc -Wall -Wextra -Werror -I includes -I libft/includes -I minilibx -o test ./obj/main.o -L libft -lft -L minilibx -lmlx -lm -framework OpenGL -framework Appkit
发生错误。
[clang:错误:-lft:'链接器'输入未使用[-Werror,-Wunused-command-line-argument]
[clang:错误:-lmlx:'链接器'输入未使用[-Werror,-Wunused-command-line-argument]
clang:错误:-lm:'链接器'输入未使用[-Werror,-Wunused-command-line-argument]
[clang:错误:-framework OpenGl:'链接器'输入未使用[-Werror,-Wunused-command-line-argument]
[clang:错误:-framework AppKit:'链接器'输入未使用[-Werror,-Wunused-command-line-argument]
clang似乎说我的标志没有使用。我做错了什么?
您有:
$(OBJS): $(SRCS)
@$(CC) $(CFLAGS) -o $@ -c $(SRCS) $(LIBFT_LIB) $(MLX_LIB)
编译为目标文件时无需指定库。因此,您需要:
$(OBJS): $(SRCS)
@$(CC) $(CFLAGS) -o $@ -c $(SRCS)
我并不完全相信该配方(我认为只要其中任何一个更改,所有源文件都会被重新编译),但是删除库可以避免将链接时参数(库)传递给不会被编译的编译器。之所以使用,是因为未发生链接。