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TARGET=i686
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ARCHDIR=arch/$(TARGET)/
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SOURCEDIR=src/
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BUILDDIR=build/
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INCLUDEDIR=$(SOURCEDIR)include/
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CFLAGS?=
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ASFLAGS?=
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# Define flags for C files
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2025-11-12 16:16:50 +01:00
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CFLAGS:=\
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-O2 \
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-ffreestanding \
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-Wall -Wextra \
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-fno-exceptions -fno-rtti \
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-I$(INCLUDEDIR) \
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$(CFLAGS)
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2025-11-13 21:39:22 +01:00
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CXXFLAGS:=$(CFLAGS)
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2025-11-12 16:16:50 +01:00
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# Define flags for assembly files
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ASFLAGS:=\
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-I$(SOURCEIDR)$(INCLUDEDIR) \
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-I$(SOURCEDIR)$(ARCHDIR) \
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$(ASFLAGS)
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LINKERFLAGS:=\
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-ffreestanding \
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-O2 \
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-nostdlib \
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-lgcc
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LIB_OBJS=\
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$(BUILDDIR)$(ARCHDIR)bootstrap.o \
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$(BUILDDIR)$(ARCHDIR)paging.o \
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$(BUILDDIR)$(ARCHDIR)initialize_pages.o \
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$(BUILDDIR)$(ARCHDIR)tty.o
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2025-11-12 16:16:50 +01:00
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KERNEL_OBJS=\
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$(BUILDDIR)kernel/kernel.o
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OBJS=$(LIB_OBJS) $(KERNEL_OBJS)
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LINKER_PATH=$(SOURCEDIR)$(ARCHDIR)linker.ld
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.PHONY: all clean snowstorm.iso debug
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.SUFFIXES: .c .o .s
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2025-11-13 21:39:22 +01:00
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$(BUILDDIR)%.o : $(SOURCEDIR)%.cpp
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i686-elf-g++ -c $< -o $@ $(CXXFLAGS)
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2025-11-12 16:16:50 +01:00
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$(BUILDDIR)%.o : $(SOURCEDIR)%.c
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i686-elf-gcc -c $< -o $@ $(CFLAGS)
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$(BUILDDIR)%.o : $(SOURCEDIR)%.s
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i686-elf-as $< -o $@ $(ASFLAGS)
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all: snowstorm.iso
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# Take the kernel file and make a bootable ISO through GRUB
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snowstorm.iso: snowstorm.kernel
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cp build/snowstorm.kernel build/isodir/boot/snowstorm.kernel
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grub-mkrescue -o build/snowstorm.iso build/isodir
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# link all object files together
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snowstorm.kernel: $(OBJS)
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i686-elf-gcc -T $(LINKER_PATH) -o build/snowstorm.kernel $(OBJS) $(LINKERFLAGS)
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grub-file --is-x86-multiboot build/snowstorm.kernel
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2025-11-13 21:39:22 +01:00
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debug: CXXFLAGS += -g -O1
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debug: ASFLAGS += -g
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debug: CFLAGS += -g -O1
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2025-11-12 16:16:50 +01:00
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debug: all
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clean:
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rm -f $(OBJS)
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rm -f build/snowstorm.kernel
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rm -f build/snowstorm.iso
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rm -f build/isodir/boot/snowstorm.kernel
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run: all
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qemu-system-i386 -d int -no-reboot -kernel build/snowstorm.kernel
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run-debug: debug
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qemu-system-i386 -d int -no-reboot -S -gdb tcp::9000 -kernel build/snowstorm.kernel
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2025-11-13 21:39:22 +01:00
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