Initial scaffold

2026-09-01 08:00:05 +02:00
commit 1b68276cb9
10 changed files with 547 additions and 0 deletions
@@ -0,0 +1,51 @@
+#!/usr/bin/env sh
+# build-iso.sh — assemble a Keru OS ISO from the built rootfs and kernel
+#
+# From-scratch approach (no archiso): we lay out the classic isohybrid
+# structure manually, squash the rootfs, and generate the ISO with xorriso +
+# isolinux/syslinux (or syslinux's isohybrid). This is the LFS/Debian-live
+# style path.
+#
+# Requires on the build host: xorriso, squashfs-tools, syslinux/isolinux.
+
+set -eu
+. "$(dirname "$0")/common.sh"
+
+ROOT="${ROOT:-/tmp/keru/root}"       # target rootfs (from make.conf)
+ISO_OUT="${ISO_OUT:-$KERU_ROOT/iso/keru-$(date +%Y%m%d).iso}"
+WORK="$KERU_ROOT/iso/work"
+ISOIMG="$WORK/isolinux"
+
+info "building Keru ISO -> $ISO_OUT"
+[ -d "$ROOT" ] || die "rootfs not found at $ROOT (run build-root.sh first)"
+
+have xorriso || die "xorriso not installed"
+have mksquashfs || die "squashfs-tools not installed"
+
+rm -rf "$WORK"; mkdir -p "$ISOIMG"
+info "generating isolinux config"
+cp /usr/lib/syslinux/bios/isolinux.bin "$ISOIMG/" || true
+cp /usr/lib/syslinux/bios/ldlinux.c32 "$ISOIMG/" || true
+cat > "$ISOIMG/isolinux.cfg" <<'EOF'
+UI vesamenu.c32
+DEFAULT keru
+LABEL keru
+    LINUX /boot/vmlinuz-keru
+    INITRD /boot/initramfs-keru.img
+    APPEND root=live:LABEL=KERU_LIVE toram quiet
+EOF
+
+info "packing rootfs into squashfs"
+mksquashfs "$ROOT" "$WORK/keru.sfs" -noappend -comp xz
+
+info "writing ISO (isohybrid)"
+xorriso -as mkisofs \
+    -o "$ISO_OUT" \
+    -V KERU_LIVE \
+    -b isolinux/isolinux.bin \
+    -c isolinux/boot.cat \
+    -no-emul-boot -boot-load-size 4 -boot-info-table \
+    -isohybrid-mbr /usr/lib/syslinux/bios/isohdpfx.bin \
+    "$WORK"
+
+info "done: $ISO_OUT"