makefile

# Files of CMMC

SRC_DIR        := ./src
BUILD_DIR      := ./build
GENERATE_DIR   := $(BUILD_DIR)/generate

SRCS           += $(SRC_DIR)/main.c $(TEST_SRC) \
					$(shell find $(SRC_DIR)/container -name "*.c" -or -name "*.cpp") \
 					$(shell find $(SRC_DIR)/IR -name "*.c" -or -name "*.cpp")

OBJ_DIR        := $(BUILD_DIR)/obj
OBJS           += $(addprefix $(OBJ_DIR)/, $(addsuffix .o, $(basename $(SRCS))))

PARSER         := ./parser


# Modules

## IR_PARSE
IR_PARSE_DIR           := $(SRC_DIR)/IR_parse
IR_PARSE_GENERATE_DIR  := $(GENERATE_DIR)/IR_parse
SRCS                   += $(shell find $(IR_PARSE_DIR) -name "*.c" -or -name "*.cpp")
IR_LEXICAL_L           := $(shell find $(IR_PARSE_DIR) -name "*.l")
IR_SYNTAX_Y            := $(shell find $(IR_PARSE_DIR) -name "*.y")
IR_LEX_YY_C            := $(IR_PARSE_GENERATE_DIR)/IR_lex.yy.c
IR_SYNTAX_TAB_C        := $(IR_PARSE_GENERATE_DIR)/IR_syntax.tab.c
IR_LEX_YY_O            := $(OBJ_DIR)/IR_lex.yy.o
IR_SYNTAX_TAB_O        := $(OBJ_DIR)/IR_syntax.tab.o
OBJS                   += $(IR_LEX_YY_O) $(IR_SYNTAX_TAB_O)
INC_PATH               += $(IR_PARSE_DIR)/include $(IR_PARSE_GENERATE_DIR)


## IR_OPTIMIZE
IR_OPTIMIZE_DIR := $(SRC_DIR)/IR_optimize
SRCS            += $(shell find $(IR_OPTIMIZE_DIR) -name "*.c" -or -name "*.cpp")
INC_PATH        += $(IR_OPTIMIZE_DIR)/include


# Tools

LEX          := flex
YACC         := bison

CC           := gcc
CXX          := g++
LD           := gcc


# Flags

YACC_FLAGS    += -d -v

INC_PATH      += ./include
INCLUDES       = $(addprefix -I, $(INC_PATH))

COMMON_CFLAGS += -MMD -c -Wall $(INCLUDES) -O2
CFLAGS        += $(COMMON_CFLAGS)
CXX_FLAGS     += $(COMMON_CFLAGS) -std=c++17
LDFLAGS       += -lfl -ly


# Building rules

## Compile c/cpp files
$(OBJ_DIR)/%.o: %.c
	@echo "+ CC" $(notdir $<)
	@mkdir -p $(dir $@)
	@$(CC) $(CFLAGS) -o $@ $<

$(OBJ_DIR)/%.o: %.cpp
	@echo "+ CXX" $(notdir $<)
	@mkdir -p $(dir $@)
	@$(CXX) $(CXX_FLAGS) -o $@ $<

# Link the objects
$(PARSER): $(OBJS)
	@echo "+ LD" $(notdir $@)
	@$(LD) -o $@ $^ $(LDFLAGS)


# IR_PARSE
## Generate lex.yy.c by Flex
$(IR_LEX_YY_C): $(IR_LEXICAL_L)
	@echo "+ LEX" $(notdir $<)
	@mkdir -p $(dir $@)
	@$(LEX) -o $@ $<

## Generate syntax.tab.c and syntax.tab.h by Bison
$(IR_SYNTAX_TAB_C): $(IR_SYNTAX_Y)
	@echo "+ YACC" $(notdir $<)
	@mkdir -p $(dir $@)
	@$(YACC) $(YACC_FLAGS) -o $@ $<

$(OBJ_DIR)/%.o: $(IR_PARSE_GENERATE_DIR)/%.c $(IR_SYNTAX_TAB_C)
	@echo "+ CC" $(notdir $<)
	@mkdir -p $(dir $@)
	@$(CC) $(CFLAGS) -o $@ $<


# Rule (`#include` dependencies): paste in `.d` files generated by gcc on `-MMD`
-include $(OBJS:.o=.d)


.PHONY: all build clean run gdb test
.DEFAULT_GOAL = $(PARSER)

all: $(PARSER)

clean:
	rm -rf $(BUILD_DIR) $(PARSER)

build: all

run: $(PARSER)
	$(PARSER) $(ARG)

gdb: all
	gdb $(PARSER)

test: all # Add args
	$(PARSER)