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[FILE BEGIN]
1# SPDX-License-Identifier: GPL-3.0
2# V/UX
3#
4# Makefile
5#
6# COPYRIGHT NOTICE
7# Copyright (C) 2025 0x4248 and contributors
8# Redistribution and use in source and binary forms, with or without
9# modification, are permitted provided that the license is not changed.
10#
11# This software is free and open source. Licensed under the GNU general
12# public license version 3.0 as published by the Free Software Foundation.
13
14DIR := $(shell pwd)
15BUSYBOX_DIR := $(DIR)/busybox
16BUILD_DIR := $(DIR)/build
17ROOTFS_TMP := /tmp/busybox
18
19INITRAMFS := $(BUILD_DIR)/initramfs.cpio.gz
20QCOW_IMG := $(BUILD_DIR)/busybox.qcow2
21
22all: $(INITRAMFS) $(QCOW_IMG)
23
24$(BUILD_DIR):
25	mkdir -p $(BUILD_DIR)
26
27busybox: $(BUILD_DIR)
28	cd $(BUSYBOX_DIR) && make && make install
29
30$(ROOTFS_TMP): busybox
31	rm -rf $(ROOTFS_TMP)
32	mkdir -p $(ROOTFS_TMP)
33	cp -r $(BUSYBOX_DIR)/_install/* $(ROOTFS_TMP)
34	chmod +x fs/init
35	cp fs/* $(ROOTFS_TMP)
36
37	# device nodes
38	cd $(ROOTFS_TMP) && \
39		mkdir -p dev && \
40		mknod dev/console c 5 1 && \
41		mknod dev/ram b 1 0 && \
42		mknod dev/tty c 5 0 && \
43		mknod dev/tty1 c 4 1 && \
44		mknod dev/fb0 c 29 0
45
46$(INITRAMFS): $(ROOTFS_TMP)
47	cd $(ROOTFS_TMP) && \
48		find . -print0 | cpio -0oH newc | gzip -9 > $(INITRAMFS)
49
50$(QCOW_IMG): busybox
51	qemu-img create -f qcow2 $(QCOW_IMG) 1G
52	@echo "# QCOW2 created. You must manually copy files into it."
53
54clean:
55	rm -rf $(BUILD_DIR)
56	rm -rf $(ROOTFS_TMP)
57
58.PHONY: all busybox clean
59
[FILE END]
(C) 2025 0x4248
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