commit - /dev/null
commit + e430bc153c8386df4ddd2173da5f62f5b7215c22
blob - /dev/null
blob + 131b767761cc4dc9a2a43d3c15f5d90aa53b6ed7 (mode 644)
--- /dev/null
+++ .gitignore
+src
+build
+tools
+data/*.old
+floppy.img
blob - /dev/null
blob + b566c86f054068bfd47a24c85b5b754d6314eb59 (mode 644)
--- /dev/null
+++ Makefile
+.POSIX:
+
+include config.mk
+
+TOP != pwd
+TOOLS = ${TOP}/tools
+ROOTFS = ${TOP}/build/rootfs
+CROSS = ${TOOLS}/bin/${TARGET}-
+T = build/.stamps
+U = ${TOP}/data/bin
+
+GMAKE = $U/gmake
+
+all: floppy.img
+
+toolchain: $T/toolchain
+
+$T/toolchain: $T/i-libgcc $T/kheaders
+ touch $@
+
+clean:
+ rm -rf build tools
+ rm -f floppy.img
+
+distclean: clean
+ rm -rf src
+ rm -f data/*.old
+
+floppy.img: build/kernel build/initrd data/syslinux.cfg
+ $U/mkfloppy "${TOP}" floppy.img
+
+build/initrd:
+
+# DOWNLOAD
+download: src/binutils.tgz src/gmp.tgz src/mpfr.tgz src/mpc.tgz src/gcc.tgz src/linux.tgz src/musl.tgz src/busybox.tar.bz2
+
+src/binutils.tgz:
+ @mkdir -p src
+ $U/download src/binutils.tgz ${GNUFTP}/binutils/binutils-${BINUTILS_VER}.tar.gz
+
+src/gmp.tgz:
+ @mkdir -p src
+ $U/download src/gmp.tgz ${GNUFTP}/gmp/gmp-${GMP_VER}.tar.gz
+
+src/mpfr.tgz:
+ @mkdir -p src
+ $U/download src/mpfr.tgz ${GNUFTP}/mpfr/mpfr-${MPFR_VER}.tar.gz
+
+src/mpc.tgz:
+ @mkdir -p src
+ $U/download src/mpc.tgz ${GNUFTP}/mpc/mpc-${MPC_VER}.tar.gz
+
+src/gcc.tgz:
+ @mkdir -p src
+ $U/download src/gcc.tgz ${GNUFTP}/gcc/gcc-${GCC_VER}/gcc-${GCC_VER}.tar.gz
+
+src/linux.tgz:
+ @mkdir -p src
+ $U/download src/linux.tgz https://mirrors.edge.kernel.org/pub/linux/kernel/v${LINUX_MAJOR}.x/linux-${LINUX_VER}.tar.gz
+
+src/musl.tgz:
+ @mkdir -p src
+ $U/download src/musl.tgz https://musl.libc.org/releases/musl-${MUSL_VER}.tar.gz
+
+src/busybox.tar.bz2:
+ @mkdir -p src
+ $U/download src/busybox.tar.bz2 https://busybox.net/downloads/busybox-${BUSYBOX_VER}.tar.bz2
+
+# EXTRACT
+extract: $T/x-binutils $T/x-gmp $T/x-mpfr $T/x-mpc $T/x-gcc $T/x-linux $T/x-busybox
+
+$T/x-binutils: src/binutils.tgz
+ $U/extract -z binutils tgz
+
+$T/x-gmp: src/gmp.tgz
+ $U/extract -z gmp tgz
+
+$T/x-mpfr: src/mpfr.tgz
+ $U/extract -z mpfr tgz
+
+$T/x-mpc: src/mpc.tgz
+ $U/extract -z mpc tgz
+
+$T/x-gcc: src/gcc.tgz
+ $U/extract -z gcc tgz
+ ln -sf ../gmp ../mpfr ../mpc build/gcc/
+
+$T/x-linux: src/linux.tgz
+ $U/extract -z linux tgz
+
+$T/x-musl: src/musl.tgz
+ $U/extract -z musl tgz
+
+$T/x-busybox: src/busybox.tar.bz2
+ $U/extract -j busybox tar.bz2
+ sed -i 's/main() {}/int main() {}/' build/busybox/scripts/kconfig/lxdialog/check-lxdialog.sh
+
+# KERNEL HEADERS
+
+$T/kheaders: $T/x-linux
+ (cd build/linux && ${GMAKE} ARCH=${ARCH} INSTALL_HDR_PATH=${TOOLS}/${TARGET} headers_install)
+ touch $@
+
+# BINUTILS
+
+$T/c-binutils: $T/x-binutils
+ rm -rf build/binutils/build
+ mkdir -p build/binutils/build
+ (cd build/binutils/build && \
+ ../configure \
+ --prefix=${TOOLS} \
+ --target=${TARGET} \
+ --with-arch=${CPU} \
+ --with-tune=${CPU} \
+ --with-system-zlib \
+ --disable-nls \
+ --disable-multilib \
+ --disable-gold \
+ --disable-gprofng)
+ touch $@
+
+$T/b-binutils: $T/c-binutils
+ (cd build/binutils/build && ${GMAKE})
+ touch $@
+
+$T/i-binutils: $T/b-binutils
+ (cd build/binutils/build && ${GMAKE} install)
+ touch $@
+
+# GCC
+
+$T/c-gcc: $T/i-binutils $T/x-gcc $T/x-gmp $T/x-mpfr $T/x-mpc
+ rm -rf build/gcc/build
+ mkdir -p build/gcc/build
+ (cd build/gcc/build && \
+ ../configure \
+ --prefix=${TOOLS} \
+ --target=${TARGET} \
+ --with-arch=${CPU} \
+ --with-tune=${CPU} \
+ --with-system-zlib \
+ --with-newlib \
+ --without-headers \
+ --enable-languages=c \
+ --disable-nls \
+ --disable-multilib \
+ --disable-libssp \
+ --disable-libsanitizer \
+ --disable-libstdcxx \
+ --disable-libgomp \
+ --disable-libquadmath \
+ --disable-libvtv \
+ --disable-threads \
+ --disable-shared \
+ --enable-static)
+ touch $@
+
+$T/b-gcc: $T/c-gcc
+ (cd build/gcc/build && ${GMAKE} all-gcc)
+ touch $@
+
+$T/i-gcc: $T/b-gcc
+ (cd build/gcc/build && ${GMAKE} install-gcc)
+ touch $@
+
+# MUSL
+
+$T/c-musl: $T/i-gcc $T/x-musl
+ rm -rf build/musl/build
+ mkdir -p build/musl/build
+ (cd build/musl/build && \
+ ../configure \
+ CROSS_COMPILE=${CROSS} \
+ --prefix=${TOOLS}/${TARGET} \
+ --target=${TARGET} \
+ --enable-static \
+ --disable-shared \
+ --disable-wrapper)
+ touch $@
+
+$T/b-musl: $T/c-musl
+ (cd build/musl/build && ${GMAKE})
+ touch $@
+
+$T/i-musl: $T/b-musl
+ (cd build/musl/build && ${GMAKE} install)
+ touch $@
+
+# LIBGCC
+
+$T/b-libgcc: $T/i-gcc $T/i-musl
+ (cd build/gcc/build && ${GMAKE} all-target-libgcc)
+ touch $@
+
+$T/i-libgcc: $T/b-libgcc
+ (cd build/gcc/build && ${GMAKE} install-target-libgcc)
+ touch $@
+
+# BUSYBOX
+BBFLAGS = ARCH=${ARCH} CROSS_COMPILE=${CROSS} CONFIG_PREFIX=${ROOTFS}
+
+busybox: $T/i-busybox
+ @du -sh ${ROOTFS}/bin/busybox
+
+busybox-defconfig: $T/x-busybox
+ (cd build/busybox && ${GMAKE} ${BBFLAGS} defconfig)
+ -cp -f data/bbconfig data/bbconfig.old
+ cp -f build/busybox/.config data/bbconfig
+
+busybox-menuconfig: $T/x-busybox
+ -cp -f data/bbconfig build/busybox/.config
+ (cd build/busybox && ${GMAKE} ${BBFLAGS} menuconfig)
+ -cp -f data/bbconfig data/bbconfig.old
+ cp -f build/busybox/.config data/bbconfig
+
+$T/b-busybox: $T/x-busybox $T/toolchain data/bbconfig
+ @cp -f data/bbconfig build/busybox/.config
+ (cd build/busybox && ${GMAKE} ${BBFLAGS})
+ touch $@
+
+$T/i-busybox: $T/b-busybox
+ @mkdir -p ${ROOTFS}
+ (cd build/busybox && ${GMAKE} ${BBFLAGS} install)
+ touch $@
+
+# KERNEL
+KFLAGS = ARCH=${ARCH} CROSS_COMPILE=${CROSS}
+
+kernel: build/kernel
+ @du -sh build/kernel
+
+linux-defconfig: $T/x-linux
+ (cd build/linux && ${GMAKE} ${KFLAGS} defconfig)
+ -cp -f data/kconfig data/kconfig.old
+ cp -f build/linux/.config data/kconfig
+
+linux-menuconfig: $T/x-linux
+ -cp -f data/kconfig build/linux/.config
+ (cd build/linux && ${GMAKE} ${KFLAGS} menuconfig)
+ -cp -f data/kconfig data/kconfig.old
+ cp -f build/linux/.config data/kconfig
+
+$T/b-linux: $T/x-linux $T/toolchain data/kconfig
+ (cd build/linux && ${GMAKE} ${KFLAGS})
+ touch $@
+
+build/kernel: $T/b-linux
+ cp -f build/linux/arch/x86/boot/bzImage build/kernel
+
+# INITRD
+
+$T/rootfs:
+ @mkdir -p ${ROOTFS}
+ ${SUDO} cp -av data/initrd/* ${ROOTFS}/
+ touch $@
+
+
+build/initrd: $T/rootfs $T/i-busybox
+ (cd ${ROOTFS} && find . | cpio --owner=0:0 -H newc -o | xz --check=crc32 -e) > $@
blob - /dev/null
blob + 42c2eef48564e149b00f2b72deac333473fd22fe (mode 644)
--- /dev/null
+++ config.mk
+ARCH = i386
+CPU = i486
+TARGET = i486-unknown-linux-musl
+
+SUDO = sudo
+
+BINUTILS_VER = 2.43
+GMP_VER = 6.3.0
+MPFR_VER = 4.2.1
+MPC_VER = 1.3.1
+GCC_VER = 14.2.0
+LINUX_VER = 4.19.322
+MUSL_VER = 1.2.5
+BUSYBOX_VER = 1.36.0
+
+GNUFTP = https://ftp.gnu.org/gnu
+
+LINUX_MAJOR != echo ${LINUX_VER} | cut -d. -f1
blob - /dev/null
blob + 8c7f93fd0ba274a8b6271a84ac884df0547c8638 (mode 755)
--- /dev/null
+++ data/bin/download
+#!/bin/sh
+
+has() {
+ command -v "$1" >/dev/null 2>&1
+}
+
+
+case "$(uname)" in
+OpenBSD|NetBSD)
+ ftp -o "$1" "$2"
+ ;;
+
+FreeBSD)
+ fetch -o "$1" "$2"
+ ;;
+*)
+ if has 'wget'; then
+ wget -qO "$1" "$2"
+ elif has 'curl'; then
+ curl -sLo "$1" "$2"
+ else
+ echo "No download program found for $(uname)" >&2
+ exit 1
+ fi
+ ;;
+esac
blob - /dev/null
blob + e7fd132dce0f8e4782b9e9dc2cb170b03256ca67 (mode 755)
--- /dev/null
+++ data/bin/extract
+#!/bin/sh
+
+T=build/.stamps
+flag=$1
+name=$2
+ext=$3
+
+mkdir -p build "$T"
+rm -rf "build/$name"
+tar -C build -x $flag -f "src/$name.$ext"
+mv build/$name-* "build/$name"
+touch "$T/x-$name"
blob - /dev/null
blob + 395c586de79710fb751542bc5171659531f991e9 (mode 755)
--- /dev/null
+++ data/bin/gmake
+#!/bin/sh
+
+case "$(uname)" in
+Linux)
+ exec make "$@"
+ ;;
+*BSD)
+ ncpu=$(echo "$MAKEFLAGS" | grep -oE -- '-j [0-9]+')
+ keep=$(echo "$MAKEFLAGS" | grep -o -- '-k')
+ unset MAKEFLAGS
+ exec gmake $ncpu $keep "$@"
+ ;;
+*)
+ echo "Unsupported OS: $(uname)" >&2
+ exit 1
+ ;;
+esac
+
blob - /dev/null
blob + 7c186edfd8d784bdb340dc973d2228e40cbbfe65 (mode 755)
--- /dev/null
+++ data/bin/mkfloppy
+#!/bin/sh -e
+
+SUDO=sudo
+SIZE=1440
+
+cleanup() {
+ "$SUDO" umount "$mp" || true
+ rmdir "$mp" || true
+ rm -f "$tmp"
+}
+
+tmp=$(mktemp)
+mp=$(mktemp -d)
+
+trap cleanup ERR INT
+
+dd if=/dev/zero of="$tmp" bs=1K count=${SIZE}
+mkdosfs "$tmp"
+syslinux --install "$tmp"
+${SUDO} mount -o loop "$tmp" "$mp"
+${SUDO} cp "$1/build/kernel" "$1/build/initrd" "$1/data/syslinux.cfg" "$mp/"
+df -h 2>/dev/null | grep -Fx "$mp"
+cp -f "$tmp" "$2"
+cleanup
blob - /dev/null
blob + 75721cd5afd69ad22111ed437cd4fe7ecfd6393c (mode 644)
--- /dev/null
+++ data/initrd/etc/hosts
+127.0.0.1 localhost
blob - /dev/null
blob + b98b9e9741c6b21a2c3e22be0e3d9a3e9e6e209a (mode 644)
--- /dev/null
+++ data/initrd/etc/inittab
+::sysinit:/etc/rc
+::askfirst:/bin/sh
+::restart:/sbin/init
+::ctrlaltdel:/sbin/reboot
blob - /dev/null
blob + 2bd8a0f67dc07b060fe984f72f16ee5dd87a8bff (mode 755)
--- /dev/null
+++ data/initrd/etc/rc
+#!/bin/sh
+mount -t proc none /proc
+mount -t sysfs none /sys
+
+while true; do
+ /bin/sh
+done
blob - /dev/null
blob + 8dda3fc099d08cf36e1f53df28598d1ee7662990 (mode 644)
--- /dev/null
+++ data/initrd/etc/resolv.conf
+nameserver 1.1.1.1
blob - /dev/null
blob + b8213d8d9558e25214a333bd80aa6eae738857de (mode 755)
--- /dev/null
+++ data/syslinux.cfg
+DEFAULT linux
+LABEL linux
+ SAY [ 486 Linux ]
+ KERNEL kernel
+ INITRD initrd
+EOF
