60 lines
1.7 KiB
Makefile
60 lines
1.7 KiB
Makefile
LA_BIN_PATH := $(CURDIR)/../ext/loongarch32r-linux-gnusf-2022-05-20/bin
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LA_PREFIX := loongarch32r-linux-gnusf-
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CC := $(LA_BIN_PATH)/$(LA_PREFIX)gcc
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CXX := $(LA_BIN_PATH)/$(LA_PREFIX)g++
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OD := $(LA_BIN_PATH)/$(LA_PREFIX)objdump
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OC := $(LA_BIN_PATH)/$(LA_PREFIX)objcopy
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RE := $(LA_BIN_PATH)/$(LA_PREFIX)readelf
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NPROC := $(shell nproc)
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CMAKE := cmake
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BUILD_DIR := build
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ABS_BUILD := $(CURDIR)/$(BUILD_DIR)
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$(shell mkdir -p $(BUILD_DIR))
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BIN := neula-os
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BINARY := $(BUILD_DIR)/$(BIN)
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TOP_SRC_DIR := src
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SOURCE_DIRS := $(shell ls $(TOP_SRC_DIR)/* -d)
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MK_DIRS := $(addprefix MAKE/,$(SOURCE_DIRS))
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ALL_SRCS := $(shell find . -name '*.c')
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LD_CSRIPT := kernel.ld
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EXTRA_MACRO := # NDEBUG
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EXTRA_FLAGS = -Wall -Werror -O -fno-omit-frame-pointer -ggdb -gdwarf-2
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EXTRA_FLAGS += -MD
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EXTRA_FLAGS += -ffreestanding -fno-common -nostdlib
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EXTRA_FLAGS += -I.
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EXTRA_FLAGS += -fno-pie -no-pie
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EXTRA_FLAGS += $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
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COMMONFLAGS := $(EXTRA_FLAGS) -march=loongarch32r
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CPPFLAGS += $(addprefix -D,$(EXTRA_MACRO)) -I$(CURDIR)/include
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CFLAGS += $(COMMONFLAGS) -O
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LDFLAGS += $(COMMONFLAGS) -z max-page-size=4096 -T$(LD_CSRIPT)
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.PHONY: all build clean
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all: build
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$(MK_DIRS): MAKE/%:% $(shell find $(%) -name '*.c')
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@TOP_BUILD_DIR=$(ABS_BUILD) \
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CC=$(CC) \
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CPPFLAGS="$(CPPFLAGS)" \
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CFLAGS="$(CFLAGS)" \
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LDFLAGS="$(LDFLAGS)" \
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$(MAKE) -C $< -j$(NPROC)
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build: $(MK_DIRS)
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@$(CC) -o $(BINARY) $(shell find $(BUILD_DIR) -name '*.o') $(CPPFLAGS) $(CFLAGS) $(LDFLAGS)
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@$(OD) -D $(BINARY) > $(BINARY).dump
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@$(RE) -a $(BINARY) > $(BINARY).info
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@$(OC) $(BINARY) -O binary $(BINARY).bin
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clean:
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rm -rf $(BUILD_DIR)
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