furtest
803ac0879b
Previously the build process removed everything and did all the build again on each make invocation. This fixes this behaviour with two changes. First dynamically find the list of files to build using find instead of a manually written list. Then use implicit rules to only build files that need to be built again instead of recompiling everything.
66 lines
2.3 KiB
Makefile
66 lines
2.3 KiB
Makefile
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BUILDDIR := build
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ELFFILE := pepperk
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SRC := src
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SOURCES := $(shell find src -name '*.c')
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OBJFILES := $(patsubst $(SRC)/%.c, $(BUILDDIR)/%.o, $(SOURCES))
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CC := x86_64-elf-gcc
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CC_FLAGS=-Wall -Wextra -std=gnu99 -nostdlib -ffreestanding -fno-stack-protector -fno-omit-frame-pointer -fno-stack-check -fno-PIC -ffunction-sections -fdata-sections -mcmodel=kernel
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CC_PROBLEMATIC_FLAGS=-Wno-unused-parameter -Wno-unused-variable
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LD := x86_64-elf-ld
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.PHONY: build build-iso debug debug2 run clean
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$(ELFFILE): $(BUILDDIR) $(OBJFILES)
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nasm -f elf64 src/idt/idt.S -o $(BUILDDIR)/idt_stub.o
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$(LD) -o $(ELFFILE) -T linker.ld $(OBJFILES) $(BUILDDIR)/idt_stub.o
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nm -n $(ELFFILE) | awk '$$2 ~ /[TtDdBbRr]/ {print $$1, $$3}' > symbols.map
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python3 symbols.py
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nasm -f elf64 symbols.S -o $(BUILDDIR)/symbols.o
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$(LD) -o $(ELFFILE) -T linker.ld $(OBJFILES) $(BUILDDIR)/idt_stub.o
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$(BUILDDIR):
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@mkdir -p $(BUILDDIR)
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$(BUILDDIR)/%.o: $(SRC)/%.c
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mkdir -p $(dir $@)
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$(CC) -g -c -Isrc $< $(CC_PROBLEMATIC_FLAGS) $(CC_FLAGS) -o $@
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limine/limine:
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rm -rf limine
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git clone https://github.com/limine-bootloader/limine.git --branch=v9.x-binary --depth=1
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$(MAKE) -C limine
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build-iso: limine/limine build
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rm -rf iso_root
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mkdir -p iso_root/boot
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cp -v $(ELFFILE) iso_root/boot
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mkdir -p iso_root/boot/limine
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cp -v limine.conf iso_root/boot/limine
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mkdir -p iso_root/EFI/BOOT
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cp -v limine/limine-bios.sys limine/limine-bios-cd.bin limine/limine-uefi-cd.bin iso_root/boot/limine/
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cp -v limine/BOOTX64.EFI iso_root/EFI/BOOT/
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cp -v limine/BOOTIA32.EFI iso_root/EFI/BOOT/
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xorriso -as mkisofs -R -r -J -b boot/limine/limine-bios-cd.bin \
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-no-emul-boot -boot-load-size 4 -boot-info-table -hfsplus \
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-apm-block-size 2048 --efi-boot boot/limine/limine-uefi-cd.bin \
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-efi-boot-part --efi-boot-image --protective-msdos-label \
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iso_root -o pepper.iso
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./limine/limine bios-install pepper.iso
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debug:
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/usr/bin/qemu-system-x86_64 -drive file=pepper.iso -s -S -d int -D qemu.log -no-reboot -no-shutdown &
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gdb $(ELFFILE) --command=debug.gdb
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debug2:
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/usr/bin/qemu-system-x86_64 -drive file=pepper.iso -s -S -d int -no-reboot -no-shutdown &
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pwndbg $(ELFFILE) --command=debug.gdb
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run: build-iso
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/usr/bin/qemu-system-x86_64 -cdrom pepper.iso -serial stdio
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clean:
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rm -rf *.o symbols.map symbols.S $(ELFFILE) iso_root pepper.iso limine $(BUILDDIR)/*.o
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