Initial scaffold

2026-09-01 08:00:05 +02:00
commit 1b68276cb9
10 changed files with 547 additions and 0 deletions
@@ -0,0 +1,49 @@
+#!/usr/bin/env sh
+# build-root.sh — build a full Keru rootfs from scratch using Kama
+#
+# Given a make.conf (or the profile default), this:
+#   1. bootstraps the minimal toolchain (host -> cross/self)
+#   2. installs the base package set into $ROOT via Kama
+#   3. applies profile choices (init, libc, fs, net)
+#
+# This is the "fully from scratch" path — no binary base image is seeded.
+
+set -eu
+. "$(dirname "$0")/common.sh"
+
+# the target rootfs is the "$ROOT" from make.conf; default it here
+ROOT="${ROOT:-/tmp/keru/root}"
+MAKE_CONF="${1:-$KERU_ROOT/profile/make.conf}"
+[ -f "$MAKE_CONF" ] || die "make.conf not found: $MAKE_CONF"
+. "$MAKE_CONF"
+ROOT="${ROOT:-/tmp/keru/root}"
+
+KAMA="$KAMA_DIR/kama"
+[ -x "$KAMA" ] || die "kama not found at $KAMA (clone the kama repo or set KAMA_DIR)"
+[ -d "$PKGS_DIR" ] || die "kama-packages repo not found at $PKGS_DIR (set PKGS_DIR)"
+
+info "building Keru rootfs into $ROOT"
+info "profile: init=$INIT libc=$LIBC fs=$TARGET_FS kernel=$KERNEL"
+
+# stage 0 — bootstrap toolchain
+info "stage 0: bootstrap toolchain (gcc binutils glibc/musl)"
+for p in binutils gcc "$LIBC" toolchain; do
+    PKGDIR="$PKGS_DIR" "$KAMA" make "$p" || die "toolchain stage failed on $p"
+done
+
+# stage 1 — base system
+info "stage 1: base system"
+for p in "${BASE_PACKAGES[@]}"; do
+    PKGDIR="$PKGS_DIR" "$KAMA" make "$p" || die "base stage failed on $p"
+done
+
+# stage 2 — kernel + init + swappables
+info "stage 2: kernel + init"
+PKGDIR="$PKGS_DIR" "$KAMA" make "$KERNEL" || die "kernel build failed"
+PKGDIR="$PKGS_DIR" "$KAMA" make "$INIT"   || die "init build failed ($INIT)"
+
+# stage 3 — fstab/mkinitramfs for the chosen FS
+info "stage 3: finalize $TARGET_FS root"
+ROOT="$ROOT" "$KERU_ROOT/scripts/mkfs-root.sh" "$TARGET_FS"
+
+info "rootfs ready: $ROOT"
@@ -0,0 +1,20 @@
+# common.sh — shared helpers for Keru scripts (installer, iso, kama)
+PREFIX="\033[1;35m[ keru ]\033[0m"
+msg()  { printf '%b %s\n' "$PREFIX" "$*"; }
+info() { printf '%b \033[1;34m==>\033[0m %s\n' "$PREFIX" "$*"; }
+warn() { printf '%b \033[1;33mwarning:\033[0m %s\n' "$PREFIX" "$*"; }
+die()  { printf '%b \033[1;31merror:\033[0m %s\n' "$PREFIX" "$*" >&2; exit 1; }
+
+banner() { printf '\033[1;36m%s\033[0m\n' "------------------------------------------"; printf '\033[1;36m  %s\033[0m\n' "$*"; printf '\033[1;36m%s\033[0m\n' "------------------------------------------"; }
+
+have() { command -v "$1" >/dev/null 2>&1; }
+
+# KeruOS source root (this repo)
+KERU_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+
+# Sibling repos (clone next to this one by default)
+#   kama  -> the package manager
+#   kama-packages -> the recipe repository
+# Override with env if you keep them somewhere else.
+KAMA_DIR="${KAMA_DIR:-$(dirname "$KERU_ROOT")/kama}"
+PKGS_DIR="${PKGS_DIR:-$(dirname "$KERU_ROOT")/kama-packages}"
@@ -0,0 +1,28 @@
+#!/usr/bin/env sh
+# mkfs-root.sh — format/seed the target root for the chosen filesystem
+# Usage: mkfs-root.sh [ext4|btrfs|xfs|zfs|f2fs]
+. "$(dirname "$0")/common.sh"
+
+FS="${1:-ext4}"
+
+# Keru builds to a plain directory staged by Kama; the filesystem choice is
+# applied at install/flash time. This script writes the fstab + initramfs
+# config so the built system knows how to mount its own root.
+ROOT="${ROOT:-/tmp/keru/root}"
+case "$FS" in
+    ext4)  FSTYPE=ext4; MK="mkfs.ext4" ;;
+    btrfs) FSTYPE=btrfs; MK="mkfs.btrfs" ;;
+    xfs)   FSTYPE=xfs; MK="mkfs.xfs" ;;
+    zfs)   FSTYPE=zfs; MK="zpool" ;;
+    f2fs)  FSTYPE=f2fs; MK="mkfs.f2fs" ;;
+    *) die "unsupported filesystem: $FS" ;;
+esac
+info "target filesystem: $FSTYPE ($MK)"
+
+# drop fstab template
+mkdir -p "$ROOT/etc"
+cat > "$ROOT/etc/fstab" <<EOF
+# Keru generated fstab — root filesystem: $FSTYPE
+# /dev/ROOT / $FSTYPE rw,relatime 0 1
+EOF
+info "wrote fstab for $FSTYPE"