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CC ?= clang
CFLAGS ?= -Wall -Wextra -g
BISON ?= bison
FLEX ?= flex
SRC_DIR := src
INC_DIR := include
BUILD_DIR := build
PARSER_Y := $(SRC_DIR)/parser.y
LEXER_L := $(SRC_DIR)/lexer.l
C_SRC := $(filter-out $(PARSER_Y:.y=.c) $(LEXER_L:.l=.c), $(wildcard $(SRC_DIR)/*.c))
PARSER_C := $(BUILD_DIR)/parser.tab.c
PARSER_H := $(BUILD_DIR)/parser.tab.h
LEXER_C := $(BUILD_DIR)/lex.yy.c
C_OBJS := $(patsubst $(SRC_DIR)/%.c,$(BUILD_DIR)/%.o,$(C_SRC))
PARSER_O := $(BUILD_DIR)/parser.tab.o
LEXER_O := $(BUILD_DIR)/lex.yy.o
OBJS := $(C_OBJS) $(PARSER_O) $(LEXER_O)
TARGET := $(BUILD_DIR)/imp
CFLAGS += -I$(INC_DIR) -MMD -MP
DEPS := $(OBJS:.o=.d)
.PHONY: all clean example
all: $(TARGET)
$(TARGET): $(OBJS)
$(CC) $(CFLAGS) $^ -o $@
$(BUILD_DIR):
@mkdir -p $@
$(BUILD_DIR)/%.o: $(SRC_DIR)/%.c | $(BUILD_DIR)
$(CC) $(CFLAGS) -c $< -o $@
$(PARSER_C) $(PARSER_H): $(PARSER_Y) | $(BUILD_DIR)
$(BISON) -d --defines=$(PARSER_H) -o $(PARSER_C) $<
$(PARSER_O): $(PARSER_C)
$(CC) $(CFLAGS) -c $< -o $@
$(LEXER_C): $(LEXER_L) $(PARSER_H) | $(BUILD_DIR)
$(FLEX) -o $@ $<
$(LEXER_O): $(LEXER_C)
$(CC) $(CFLAGS) -c $< -o $@
example: $(TARGET)
./$(TARGET) example/example.imp
clean:
@rm -rf $(BUILD_DIR)
-include $(DEPS)
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