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# The makefile
OS_NAME := emuos
ARCH ?= x86_64
export SYSROOT = $(PWD)/sysroot
# Variables for easy access of tools like gcc and nasm
export CC = $(ARCH)-elf-gcc
export CXX = $(ARCH)-elf-g++
export AR = $(ARCH)-elf-ar
export NASM = nasm
QEMU = qemu-system-x86_64
#ASMFLAGS = -felf32
#CXXFLAGS := -ffreestanding -O2 -Wall -Wextra -fno-exceptions -fno-rtti
#LDFLAGS := -ffreestanding -O2 -nostdlib
.PHONY: all grub clean build-all
all: build-all grub
build-all: kernel/kernel.bin libc.a
libc/libc.a: install-headers
$(info [INFO] Building libc)
$(MAKE) -C ./libc/ ARCH=$(ARCH) PREFIX=$(PWD)
kernel/kernel.bin: libc/libc.a install-headers
$(info [INFO] Building kernel)
$(MAKE) -C ./kernel/ ARCH=$(ARCH) PREFIX=$(PWD)
grub: build-all grub.cfg
xorriso -as mkisofs -b boot/limine/limine-bios-cd.bin \
-no-emul-boot -boot-load-size 4 -boot-info-table \
--efi-boot boot/limine/limine-uefi-cd.bin \
-efi-boot-part --efi-boot-image --protective-msdos-label \
isodir -o emuos.iso
qemu: grub
$(QEMU) -no-shutdown -no-reboot --serial stdio -s -m 512 -hda $(OS_NAME).iso
install: install-headers install-libraries
install-headers:
$(MAKE) -C ./kernel/ install-headers
$(MAKE) -C ./libs/libc/ install-headers
install-libraries:
$(MAKE) -C ./libs/libc/ install-lib
clean:
-@$(MAKE) -C ./kernel/ clean
-@$(MAKE) -C ./libs/libc/ clean
-@$(RM) $(wildcard *.bin *.a)
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