first commit

.gitignore

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+components/*
+cdroot/init.cpio
+cdroot/bzImage
+initramfs/*/*

Makefile

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+CORES 		:= $(shell nproc)
+PWD 		:= $(shell pwd)
+LINUX_DIR 	:= $(PWD)/components/linux
+MUSL_DIR 	:= $(PWD)/components/musl
+BUSYBOX_DIR 	:= $(PWD)/components/busybox
+LINUX_CFG 	:= $(LINUX_DIR)/.config
+MUSL_CFG 	:= $(MUSL_DIR)/config.mak
+BUSYBOX_CFG 	:= $(BUSYBOX_DIR)/.config
+LINUX_OUT 	:= $(LINUX_DIR)/arch/x86/boot/bzImage
+MUSL_OUT 	:= $(MUSL_DIR)/lib/libc.so
+BUSYBOX_OUT 	:= $(BUSYBOX_DIR)/busybox
+DOWNLOAD_SCRIPT := $(PWD)/scripts/download-components.sh
+CONFIGS_DIR 	:= $(PWD)/configs
+
+MUSL_GCC 	:= "${REALGCC:-gcc}" "$@" -specs "$(MUSL_DIR)/lib/musl-gcc.specs"
+
+.PHONY: all deps linux busybox clean
+
+all: deps linux busybox
+
+deps:
+	@echo "Downloading dependencies..."
+	@$(DOWNLOAD_SCRIPT)
+
+linux: $(LINUX_OUT)
+
+$(LINUX_OUT): $(LINUX_CFG)
+	@echo "Building Linux kernel..."
+	@$(MAKE) -C $(LINUX_DIR) -j $(CORES)
+
+$(LINUX_CFG):
+	@echo "Copying Linux config..."
+	@cp -r $(CONFIGS_DIR)/linux/. $(LINUX_DIR)/
+
+musl: $(MUSL_OUT)
+
+$(MUSL_SPECS): $(MUSL_OUT)
+$(MUSL_OUT): $(MUSL_CFG)
+	make -C components/musl -j $(CORES)
+
+$(MUSL_CFG):
+	@echo "Configuring musl..."
+	cd components/musl && ./configure --prefix=/usr
+
+busybox: musl $(BUSYBOX_OUT)
+
+$(BUSYBOX_OUT): $(BUSYBOX_CFG)
+	@echo "Building BusyBox..."
+	@$(MAKE) -C $(BUSYBOX_DIR) -j $(CORES) CC="$(MUSL_GCC)"
+
+$(BUSYBOX_CFG):
+	@echo "Copying BusyBox config..."
+	@cp -r $(CONFIGS_DIR)/busybox/. $(BUSYBOX_DIR)/
+
+install: linux busybox
+	@cp $(LINUX_OUT) cdroot/
+	$(MAKE) -C $(BUSYBOX_DIR) install CONFIG_PREFIX=$(PWD)/initramfs -j $(CORES)
+
+clean:
+	@echo "Cleaning up build artifacts..."
+	@$(MAKE) -C $(LINUX_DIR) clean
+	@$(MAKE) -C $(BUSYBOX_DIR) clean

cdroot/isolinux.cfg

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+DEFAULT linux
+LABEL linux
+  KERNEL bzImage
+  INITRD init.cpio

initramfs/bin

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+usr/bin

initramfs/lib

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+usr/lib

initramfs/lib64

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+usr/lib

initramfs/sbin

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+usr/bin

scripts/download-components.sh

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+KERNEL_VERSION="6.7.4"
+KERNEL_MAJOR="${KERNEL_VERSION%%.*}"
+KERNEL_NAME="linux-$KERNEL_VERSION"
+KERNEL_URL="https://cdn.kernel.org/pub/linux/kernel/v$KERNEL_MAJOR.x/$KERNEL_NAME.tar.xz"
+
+BUSYBOX_VERSION="1.36.1"
+BUSYBOX_URL="https://busybox.net/downloads/busybox-$BUSYBOX_VERSION.tar.bz2"
+
+MUSL_VERSION="1.2.4"
+MUSL_URL="https://musl.libc.org/releases/musl-$MUSL_VERSION.tar.gz"
+
+mkdir -p components
+cd components
+
+download_kernel() {
+	echo "Checking for existing Linux directory..."
+	if [ -d linux ]; then
+  		echo "Linux directory present, skipping."
+		return
+	fi
+
+	echo "Downloading Linux $KERNEL_VERSION from $KERNEL_URL"
+	curl -L $KERNEL_URL | tar -xJ
+	mv $KERNEL_NAME linux
+}
+
+download_busybox() {
+	echo "Checking for existing Busybox directory..."
+	if [ -d busybox ]; then
+		echo "Busybox directory present, skipping."
+		return
+	fi
+
+	echo "Downloading Busybox $BUSYBOX_VERSION from $BUSYBOX_URL"
+	curl -L $BUSYBOX_URL | tar -xj
+	mv busybox-$BUSYBOX_VERSION busybox
+}
+
+download_musl() {
+	echo "Checking for existing musl directory..."
+	if [ -d musl ]; then
+		echo "musl directory present, skipping."
+		return
+	fi
+
+	echo "Downloading musl $MUSL_VERSION from $MUSL_URL"
+	curl -L $MUSL_URL | tar -xz
+	mv musl-$MUSL_VERSION musl
+}
+
+download_components() {
+	download_kernel
+	download_busybox
+	download_musl
+}
+
+download_components