lordtet
53198515c8
Default output variable holds a generic writer, and any output that isn't really sure where to output to can just output there. Set by the system early in boot. Also made some changes to the makefile to support arguments in the "make run" or "make debug" subset of calls. For now, it's just VGA=1/0 or SERIAL=1/0 to enable/disable VGA/serial. Defaults are VGA=1, SERIAL=0.
89 lines
1.6 KiB
Makefile
89 lines
1.6 KiB
Makefile
###CONFIGURATION
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ARCH := i686
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CROSS := $(ARCH)-elf-
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AS := nasm
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CC := $(CROSS)gcc
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LD := $(CROSS)ld
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QEMU := qemu-system-i386
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INCLUDES:= include/
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CFLAGS := -I $(INCLUDES) -O2 -Wall -Wextra -ffreestanding -nostdlib -lgcc -g
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LDFLAGS := -T linker.ld -nostdlib
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ASFLAGS := -f elf32
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SRC_DIR := src
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OBJ_DIR := obj
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BIN_DIR := build
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LOADER_DIR := module_bootloader
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SOURCES := $(wildcard $(SRC_DIR)/*.c) $(wildcard $(SRC_DIR)/*.s)
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OBJECTS := $(patsubst $(SRC_DIR)/%, $(OBJ_DIR)/%, $(SOURCES:.c=.o))
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OBJECTS := $(OBJECTS:.s=.o)
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OUT_ELF := $(BIN_DIR)/ukern.elf
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OUT_ISO := $(BIN_DIR)/uOS.iso
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###QEMU CONFIG
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QEMU_FLAGS :=
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VGA ?= 1
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SERIAL ?= 0
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ifeq ($(VGA), 0)
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QEMU_FLAGS += -display none
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endif
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ifeq ($(SERIAL), 1)
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QEMU_FLAGS += -serial stdio
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endif
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###RULES
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.PHONY: all
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all: $(OUT_ELF)
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#Build Targets
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$(OUT_ELF): $(OBJECTS)
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@mkdir -p $(BIN_DIR)
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$(LD) $(LDFLAGS) -o $@ $^ $(shell $(CC) -print-libgcc-file-name)
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$(OBJ_DIR)/%.o: $(SRC_DIR)/%.c
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@mkdir -p $(dir $@)
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$(CC) $(CFLAGS) -c $< -o $@
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$(OBJ_DIR)/%.o: $(SRC_DIR)/%.s
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@mkdir -p $(dir $@)
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$(AS) $(ASFLAGS) $< -o $@
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#Related targets
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$(OUT_ISO): $(OUT_ELF)
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@cp $(OUT_ELF) $(LOADER_DIR)/src/boot/
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@$(MAKE) -C $(LOADER_DIR) all
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@cp $(LOADER_DIR)/$(OUT_ISO) $(BIN_DIR)/
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#Utility
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.PHONY: clean
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clean:
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rm -rf $(OBJ_DIR) $(BIN_DIR)
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.PHONY: iso
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iso: $(OUT_ISO)
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.PHONY: run
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run: $(OUT_ELF)
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$(QEMU) $(QEMU_FLAGS) -kernel $(OUT_ELF)
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.PHONY: debug
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debug:
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$(QEMU) $(QEMU_FLAGS) -s -S -kernel $(OUT_ELF)
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.PHONY: run_iso
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run_iso:
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$(QEMU) $(QEMU_FLAGS) -cdrom $(OUT_ISO)
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.PHONY: debug_iso
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debug_iso:
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$(QEMU) $(QEMU_FLAGS) -s -S -cdrom $(OUT_ISO)
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