OPENSSL_INCLUDE ?= /usr/include/openssl/
BUILD_DIR=out
SRC_DIR=src
INC_DIR=inc
CC=gcc
OBJDUMP=objdump
LIBS=deps/ptQueue/out/ptQueue.a deps/wsServer/libws.a deps/flatcc/lib/libflatccrt.a
LIBS_HEADERS=deps/ $(OPENSSL_INCLUDE)
# flatcc runtime and generated reader headers use const-dropping casts;
# include both as system headers so -Wcast-qual doesn't apply to them
SYSTEM_INCLUDES=-isystem deps/flatcc/include/ -isystem $(PROTO_INC_DIR)/
STATIC_LIBS=crypto
STANDART=c23
OPTIMIZE=-O3
TARGET=main

FLATCC           = deps/flatcc/bin/flatcc
FLATC            = deps/flatbuffers/build/flatc
FBS_DIR          = flatbuffers
PROTO_INC_DIR    = inc/flatbuf_autogen
PROTO_SRC_DIR    = src/flatbuf_autogen
PROTO_STAMP      = $(BUILD_DIR)/.proto_stamp
PY_PROTO_DIR     = hmmmm_scripts/flatbuf_autogen
PY_PROTO_STAMP   = $(BUILD_DIR)/.py_proto_stamp

FBS_SOURCES := $(shell find $(FBS_DIR) -name '*.fbs')


DEFINES=#-DOPCODE_WORDSIZE=2 -DMEM_CELL_WORDS=1 -DPC_WORDSIZE=2 -DGP_REG_CELL_WORDS=1 -DIO_REG_CELL_WORDS=1

C_SOURCES := $(shell find $(SRC_DIR) -type f -name '*.c')

C_INCLUDES=-I$(INC_DIR)/ $(addprefix -I,$(LIBS_HEADERS))

C_DEFS=-D_POSIX_C_SOURCE=199309L

DISABLE_FLAGS=-Wno-unused-variable -Wno-unused-parameter -Wno-write-strings -Wno-pointer-arith -Wno-analyzer-infinite-loop
PEDANTIC_FLAGS=-pedantic -pedantic-errors $(DISABLE_FLAGS) -Wall -Wcast-align -Wcast-qual -Wconversion -Wduplicated-branches -Wduplicated-cond -Werror -Wextra -Wfloat-equal -Wlogical-op -Wpedantic -Wredundant-decls -Wsign-conversion
ANALYZER_FLAGS=-fanalyzer -fdiagnostics-show-option -fdiagnostics-color=always
LSECTIONS=-ffunction-sections -fdata-sections -Wl,--gc-sections
CFLAGS=$(C_DEFS) -g $(C_INCLUDES) $(SYSTEM_INCLUDES) $(DEFINES) $(OPTIMIZE) --std=$(STANDART) $(PEDANTIC_FLAGS) $(ANALYZER_FLAGS) -MMD -MP # -fno-omit-frame-pointer -fno-inline -fno-lto
STATICLIBS_FLAGS=$(addprefix -l,$(STATIC_LIBS))
# LFLAGS=$(OPTIMIZE) -g $(PEDANTIC_FLAGS) $(DEFINES) $(STATICLIBS_FLAGS) $(LSECTIONS) -lm -fno-omit-frame-pointer -fno-inline -fno-lto
LFLAGS=$(OPTIMIZE) -g $(PEDANTIC_FLAGS) $(DEFINES) $(STATICLIBS_FLAGS) -flto -fuse-linker-plugin $(LSECTIONS) -lm -fno-omit-frame-pointer -fno-inline



OBJECTS = $(patsubst $(SRC_DIR)/%.c, $(BUILD_DIR)/%.o, $(C_SOURCES))

DEP = $(filter %.d, $(OBJECTS:.o=.d))
$(info $(DEP))

OBJECTS += $(LIBS)
vpath %.c $(sort $(dir $(C_SOURCES)))


all: build

build: date deps Dir proto target compile_commands

rebuild: clean | build

$(info $(DEP))

-include $(DEP)

$(BUILD_DIR)/%.o: %.c Makefile | $(BUILD_DIR)
	@echo -e '\033[1;32mCC\t'$<'\t->\t'$@'\033[0m'
	@$(CC) -c $(CFLAGS) -Wa,-a,-ad,-alms=$(BUILD_DIR)/$(notdir $(<:.c=.lst)) $< -o $@
	@$(OBJDUMP) -d -S $@ > $(BUILD_DIR)/$(notdir $(<:.c=.casm))

target: date proto $(BUILD_DIR)/$(TARGET).elf

$(BUILD_DIR)/$(TARGET).elf: $(OBJECTS)
	@echo -e '\033[1;32mELF\t'$(OBJECTS)'\n\t\t\t->\t'$@'\033[0m'
	@$(CC) $(LFLAGS) $(OBJECTS) $(LDLIBS) -o $(BUILD_DIR)/$(TARGET).elf

deps:
	@make -C deps all

proto: $(PROTO_STAMP)

$(PROTO_STAMP): $(FBS_SOURCES) | ProtoDir BuildDir
	@echo -e '\033[1;32mFLATCC\tGenerating FlatBuffers headers\033[0m'
	@for fbs in $(FBS_SOURCES); do \
		echo -e '\033[1;32mFLATCC\t'$$fbs'\033[0m'; \
		$(FLATCC) -a -I $(FBS_DIR) -o $(PROTO_INC_DIR) $$fbs || exit 1; \
	done
	@touch $@



BuildDir:
	@mkdir -p $(BUILD_DIR)
	$(shell mkdir -p $(dir $(OBJECTS)))

SrcDir:
	@mkdir -p $(SRC_DIR)

IncDir:
	@mkdir -p $(INC_DIR)

ProtoDir:
	@mkdir -p $(PROTO_INC_DIR)
	@mkdir -p $(PROTO_SRC_DIR)

Dir: BuildDir SrcDir IncDir ProtoDir


python-proto: $(PY_PROTO_STAMP)

$(PY_PROTO_STAMP): $(FBS_SOURCES) $(FLATC) | $(PY_PROTO_DIR) BuildDir
	@echo -e '\033[1;32mFLATC\tGenerating Python FlatBuffers bindings\033[0m'
	@$(FLATC) --python --gen-all -I $(FBS_DIR) -o $(PY_PROTO_DIR) $(FBS_DIR)/proto.fbs
	@touch $@

$(PY_PROTO_DIR):
	@mkdir -p $@

$(FLATC):
	@$(MAKE) -C deps flatbuffers/build/flatc


.PHONY: clean deps proto python-proto
clean:
	@rm -rf $(BUILD_DIR)/* $(BUILD_DIR)/.* $(PROTO_INC_DIR)/* $(PROTO_SRC_DIR)/*
#	@rm -f compile_commands.json
	@echo -e '\033[0;31mCleaned\033[0m'

.NOTPARALLEL: date target rebuild deps proto
date:
	@echo -e '\033[1;32m'"Starting build at " | tr -d '\n'
	@date
	@echo -e '\033[0m'


compile_commands:
#	 @bear -- ./.gen_compile_commands.sh $(TARGET) $(CC) "$(CFLAGS)" "$(LFLAGS)" "$(OBJECTS)"