mirror of
https://github.com/Klipper4FlashForge/firmware.git
synced 2026-10-22 05:12:16 -05:00
Oleksandr ShyshatskyiandClaude Opus 5
b98552386b
The software component existed to give the mod one exec hook. It is not needed for that any more, so a release now carries our installer and our payload and nothing else: 26MB smaller, 21MB of which was FlashForge's own firmwareExe travelling back to the partition it was already on, along with their klippy tree, their wifi module and their configs. WHAT IT GIVES BACK. /usr/prog/PROGRAM/software is no longer rewritten, so the version directory there stays FlashForge's with their genuine firmwareExe inside it -- and app_startup.sh's five-second watchdog, which copies one out of that directory when nothing by that name is running, has something to copy again. A printer whose payload fails to install now comes up on the stock UI instead of a blank screen. That recovery has been broken since we started deleting their binary out of a component we shipped; docs/how-it-works.md claimed it worked throughout. THE ROOT PASSWORD moves with it, because it used to ride in the component's shadow file. bin/pack.sh bakes ROOT_PW_HASH into the installer, single-quoted -- an unquoted $6$... would have the printer's shell expand $6 as a positional parameter and ship a truncated hash -- and the installer writes it to /usr/prog/etc/shadow. The random-password path asks one question instead of four: FlashForge ship the same root hash on every machine, so a live shadow still carrying it means nobody has set a password and it is ours to set. The .prev-root-hash recording, the shipped-vs-live comparison and the restore-it- afterwards step were all machinery for surviving a file that nothing overwrites any more, and are gone. pack.sh checks the hardcoded constant against the stock package it built from, because getting it wrong is silent and total: every printer would read as "already set" and none would ever get a password. bin/patch.sh is bin/payload.sh. It patched nothing any more -- no splice, no shadow edit, no firmwareExe deletion -- and what is left is the payload: the feed installed by the printer's own opkg, the seeded config, the manifest. Its sections are renumbered 1-5 with no gaps, and the five tombstone comments marking where removed sections used to be are gone with them. test_recipe_layout.py loses six of its nine tests. Each compared the tree against a description of the tree -- no fourth directory kind, each kind still used, 3rdparty carries no files of ours, installer/ holds exactly two named files -- and none could go red for a reason a printer would notice, while all six went red the moment the layout legitimately changed. The two that bite are kept: a payload/ path escaping $MODDIR, and a recipe name at both levels, which makes pkg_dir silently build the wrong package. SW_VER is deleted from config.env.example and both workflows: it stamped a component that is not built. Gates: 112 static tests pass. The generated installer is verified after substitution -- all four lines present, and `sh -n` over the result, because a hash with a stray character in it would otherwise reach a printer as a syntax error whose only symptom is a package that installs nothing. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CH7Yb4wuPhnppHAB25UX7e
382 lines
17 KiB
Bash
Executable File
382 lines
17 KiB
Bash
Executable File
#!/bin/bash
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# ---------------------------------------------------------------------------
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# Cross-build CPython 3.13 for the FlashForge Creator 5 Pro (Ingenic mipsel).
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#
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# THIS IS THE MEASUREMENT HARNESS, NOT THE BUILD. pkg/python is what produces
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# the interpreter a package ships: it compiles inside the repo's own build
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# image, from the tarballs pinned in versions.env, and caches the result in
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# work/pkg/python. The two are the same build -- same flags,
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# same wrappers, same gates -- but this one re-execs itself inside a
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# throwaway debian:bookworm, which is how every number in README.md beside it
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# was measured, and which is the fastest way to try a change to the recipe
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# without touching the build lane. Exactly the relationship
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# tools/supervisor/build.sh has to section 5b.
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#
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# Target ABI, measured, non-negotiable:
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# e_flags = 0x70001405 = ELF32 / little-endian / NAN2008 / O32 /
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# hard-float / mips32r2
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# loader = /lib/ld-linux-mipsn8.so.1 , rootfs glibc 2.33
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#
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# Toolchain: the repo's Ingenic gcc 7.2 / glibc 2.29 cross compiler -- the SAME
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# one bin/payload.sh uses for klippy's c_helper.so. musl is forbidden: a
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# musl-linked interpreter cannot dlopen a glibc c_helper.so, which is exactly
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# how klippy loads it. glibc 2.29 -> 2.33 is forward compatible.
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#
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# `-EL -mnan=2008` must reach BOTH the compile and the link of every object.
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# Rather than trust each project's build system to forward CFLAGS to its link
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# line (several do not), we install PATH wrappers that bake the two flags into
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# the driver itself. That is the single most important trick in this file.
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#
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# Usage:
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# ./tools/python/build.sh # the whole thing, in docker
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# ./tools/python/build.sh --in-container # the actual build
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#
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# Artifacts land in tools/python/out/ (gitignored, like everything else this
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# repo builds): py313.tgz is the trimmed tree the payload would carry,
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# py313-full.tgz is everything `make install` produced.
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# ---------------------------------------------------------------------------
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set -euo pipefail
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HERE="$(cd "$(dirname "$0")" && pwd)"
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REPO="${REPO:-$(cd "$HERE/../.." && pwd)}"
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TOOLCHAIN_HOST="$REPO/work/.mips-toolchain/mips-gcc720-glibc229"
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# --------------------------------------------------------------- versions ---
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# Kept in step with versions.env by hand. They are duplicated rather than
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# sourced because this script has to run against a source tree it is
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# experimenting on -- bumping a version HERE first, seeing what breaks, and
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# only then editing the pin -- which is the whole reason it still exists.
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PY_VER="${PY_VER:-3.13.7}"
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ZLIB_VER=1.3.1
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OSSL_VER=3.0.15
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FFI_VER=3.4.6
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SQLITE_TAR=sqlite-autoconf-3460100 # 3.46.1
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XZ_VER=5.4.7
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BZIP2_VER=1.0.8
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EXPAT_VER=2.6.4
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EXPAT_TAG=R_2_6_4
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# The mod's prefix root on the printer, and the same --prefix bin/payload.sh
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# builds with: bin/python3.13 beside bin/s6-svscan, stdlib in
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# lib/python3.13/. The one difference is that payload.sh deletes the `python3`
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# symlink (and idle3/pydoc3/*-config) out of bin/ before staging, so that
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# putting $MODDIR/bin on PATH cannot quietly change what `python3` means --
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# see tools/python/README.md. This harness leaves the tree as `make install`
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# produced it, because the sizes reported below are of that tree.
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PREFIX=/usr/data/anvil
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# ------------------------------------------------------- docker wrapper -----
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if [ "${1:-}" != "--in-container" ]; then
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[ -x "$TOOLCHAIN_HOST/bin/mips-linux-gnu-gcc" ] || {
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echo "!! no toolchain at $TOOLCHAIN_HOST" >&2
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echo " run ./bin/fetch-assets.sh, then any build (bin/payload.sh unpacks it)" >&2
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exit 1; }
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exec docker run --rm \
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-v "$TOOLCHAIN_HOST":/toolchain:ro \
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-v "$HERE":/work \
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-e PY_VER="$PY_VER" -e PY_EXTRA_CONFIGURE="${PY_EXTRA_CONFIGURE:-}" \
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-e HOST_UID="$(id -u)" -e HOST_GID="$(id -g)" \
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-w /work debian:bookworm \
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bash /work/build.sh --in-container
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fi
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# =========================== everything below runs inside the container ======
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START=$(date +%s)
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export DEBIAN_FRONTEND=noninteractive
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TC=/toolchain
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W=/work
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SRC=$W/src # tarball cache (survives between runs)
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B=$W/build # scratch: unpacked trees
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HOSTPY=$W/hostpy # the x86-64 build-Python 3.13 (--with-build-python)
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DEP=$W/deproot # cross-built C libraries, STATIC. Not shipped.
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STAGE=$W/stage # DESTDIR: what actually goes on the printer
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OUT=$W/out
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mkdir -p "$SRC" "$B" "$HOSTPY" "$DEP" "$OUT"
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log() { echo; echo "===== $* ====="; }
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log "apt: build dependencies"
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apt-get update -qq
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apt-get install -y -qq --no-install-recommends \
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build-essential curl ca-certificates pkg-config perl file xz-utils \
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zlib1g-dev libssl-dev libffi-dev >/dev/null
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# ------------------------------------------------------- the wrappers -------
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# -EL -mnan=2008 on every invocation, compile or link. Without -mnan=2008 the
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# objects are legacy-NaN and the kernel refuses to load the result.
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log "toolchain wrappers (-EL -mnan=2008 baked in)"
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mkdir -p /opt/xw/bin
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for t in gcc g++ cpp; do
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cat > /opt/xw/bin/mips-linux-gnu-$t <<EOF
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#!/bin/sh
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exec $TC/bin/mips-linux-gnu-$t -EL -mnan=2008 "\$@"
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EOF
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chmod +x /opt/xw/bin/mips-linux-gnu-$t
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done
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for t in ar as ld nm objcopy objdump ranlib readelf strip strings size; do
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ln -sf $TC/bin/mips-linux-gnu-$t /opt/xw/bin/mips-linux-gnu-$t
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done
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export PATH=/opt/xw/bin:$PATH
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mips-linux-gnu-gcc --version | head -1
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# gate the wrapper itself before building 300MB on top of it
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echo 'int main(void){return 0;}' > /tmp/abi.c
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mips-linux-gnu-gcc /tmp/abi.c -o /tmp/abi.out
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FLAGS=$(mips-linux-gnu-readelf -h /tmp/abi.out | awk '/Flags:/{print $2}' | tr -d ,)
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echo "wrapper produces e_flags=$FLAGS"
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[ "$FLAGS" = "0x70001405" ] || { echo "!! wrong ABI from the wrapper"; exit 1; }
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# ------------------------------------------------------------ fetch ---------
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# No sha256 here on purpose: versions.env holds the pins and
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# bin/fetch-assets.sh is what enforces them for anything that ships. This
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# harness downloads whatever version you point it at, which is what makes it
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# useful for deciding whether a bump is safe BEFORE it becomes a pin.
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fetch() { # fetch <url> -> $SRC/<basename>, cached
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local url=$1 f="$SRC/$(basename "$1")"
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[ -s "$f" ] || { echo ">> $url"; curl -sSLf -o "$f.part" "$url" && mv "$f.part" "$f"; }
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}
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log "fetch sources"
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fetch https://www.python.org/ftp/python/$PY_VER/Python-$PY_VER.tgz
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fetch https://zlib.net/fossils/zlib-$ZLIB_VER.tar.gz
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fetch https://github.com/openssl/openssl/releases/download/openssl-$OSSL_VER/openssl-$OSSL_VER.tar.gz
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fetch https://github.com/libffi/libffi/releases/download/v$FFI_VER/libffi-$FFI_VER.tar.gz
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fetch https://www.sqlite.org/2024/$SQLITE_TAR.tar.gz
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fetch https://github.com/tukaani-project/xz/releases/download/v$XZ_VER/xz-$XZ_VER.tar.gz
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fetch https://sourceware.org/pub/bzip2/bzip2-$BZIP2_VER.tar.gz
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fetch https://github.com/libexpat/libexpat/releases/download/$EXPAT_TAG/expat-$EXPAT_VER.tar.gz
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unpack() { rm -rf "$B/${2}"; tar -xf "$SRC/$1" -C "$B"; }
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# ============================================ 1. host CPython 3.13 ==========
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# Cross-building CPython needs a build-Python of the *same* version: the
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# Makefile runs it to freeze modules, generate deepfreeze sources and byte
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# compile the stdlib. A distro python3.11 will not do.
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if [ ! -x "$HOSTPY/bin/python3.13" ]; then
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log "host CPython $PY_VER (x86-64, for --with-build-python)"
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unpack Python-$PY_VER.tgz Python-$PY_VER
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cd "$B/Python-$PY_VER"
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./configure --prefix="$HOSTPY" --without-ensurepip >/dev/null
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make -j"$(nproc)" >/dev/null
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make install >/dev/null
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cd /
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else
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log "host CPython already built -- reusing $HOSTPY"
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fi
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"$HOSTPY/bin/python3.13" -VV
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# ============================================ 2. cross C libraries ==========
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# All STATIC (-fPIC) into $DEP. Rationale: linking them into the interpreter
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# and its extension modules means the shipped tree has no .so of ours to find
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# at runtime, so there is no LD_LIBRARY_PATH for dependencies, no chance of
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# picking up FlashForge's /usr/prog copies, and nothing to version-skew. The
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# only cost is a few MB of duplicated libcrypto between _ssl.so and _hashlib.so.
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export CC=mips-linux-gnu-gcc
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export CXX=mips-linux-gnu-g++
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export AR=mips-linux-gnu-ar
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export RANLIB=mips-linux-gnu-ranlib
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export STRIP=mips-linux-gnu-strip
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export CFLAGS="-O2 -fPIC -D_FILE_OFFSET_BITS=64"
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export CPPFLAGS="-I$DEP/include"
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export LDFLAGS="-L$DEP/lib"
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# pkg-config must see ONLY our sysroot, never the container's /usr/lib.
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export PKG_CONFIG_LIBDIR="$DEP/lib/pkgconfig"
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export PKG_CONFIG_PATH="$DEP/lib/pkgconfig"
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HOSTTRIPLE=mips-linux-gnu
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BUILDTRIPLE=x86_64-linux-gnu
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log "zlib $ZLIB_VER"
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unpack zlib-$ZLIB_VER.tar.gz zlib-$ZLIB_VER
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cd "$B/zlib-$ZLIB_VER"
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CHOST=$HOSTTRIPLE ./configure --prefix="$DEP" --static >/dev/null
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make -j"$(nproc)" >/dev/null && make install >/dev/null
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log "openssl $OSSL_VER"
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unpack openssl-$OSSL_VER.tar.gz openssl-$OSSL_VER
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cd "$B/openssl-$OSSL_VER"
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# linux-mips32 is the O32 target. openssldir points at where the interpreter
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# will look for certs ON THE PRINTER, not at a build path.
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#
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# Two traps, both hit for real:
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# * `no-docs` only exists from OpenSSL 3.1. On 3.0.15 it is an "Unsupported
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# options" hard error, not a warning.
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# * the linux-mips32 target hardcodes `-mips2` into its cflags. This
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# toolchain defaults to -mfp64 (hard-float, fp64 registers), and gcc
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# rejects `-mgp32 -mfp64` on anything below mips32r2:
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# error: '-mgp32' and '-mfp64' can only be combined if the target
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# supports the mfhc1 and mthc1 instructions
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# User cflags land AFTER the target's on the command line, so appending
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# -mips32r2 puts the ISA back where the printer actually is. If a future
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# OpenSSL orders them the other way, linux-generic32 (portable C, no mips
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# assembly) is the fallback and is exercised below.
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OSSL_TARGET=linux-mips32
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OSSL_ISA=-mips32r2
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./Configure $OSSL_TARGET \
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--prefix="$DEP" --libdir=lib --openssldir=$PREFIX/ssl \
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no-shared no-tests \
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-fPIC -O2 $OSSL_ISA -D_FILE_OFFSET_BITS=64 >/dev/null
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if ! make -j"$(nproc)" >"$OUT/openssl.log" 2>&1; then
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echo "!! $OSSL_TARGET failed; falling back to linux-generic32 (no mips asm)"
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tail -20 "$OUT/openssl.log"
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make distclean >/dev/null 2>&1 || true
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./Configure linux-generic32 \
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--prefix="$DEP" --libdir=lib --openssldir=$PREFIX/ssl \
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no-shared no-tests no-asm \
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-fPIC -O2 -D_FILE_OFFSET_BITS=64 >/dev/null
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make -j"$(nproc)" >"$OUT/openssl.log" 2>&1
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fi
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make install_sw >/dev/null
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log "libffi $FFI_VER"
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unpack libffi-$FFI_VER.tar.gz libffi-$FFI_VER
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cd "$B/libffi-$FFI_VER"
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./configure --host=$HOSTTRIPLE --build=$BUILDTRIPLE --prefix="$DEP" \
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--disable-shared --enable-static --with-pic --disable-docs >/dev/null
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make -j"$(nproc)" >/dev/null && make install >/dev/null
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log "sqlite ($SQLITE_TAR) -- THE reason this whole exercise exists"
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unpack $SQLITE_TAR.tar.gz $SQLITE_TAR
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cd "$B/$SQLITE_TAR"
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./configure --host=$HOSTTRIPLE --build=$BUILDTRIPLE --prefix="$DEP" \
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--disable-shared --enable-static --with-pic \
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--disable-readline --disable-editline >/dev/null
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make -j"$(nproc)" >/dev/null && make install >/dev/null
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log "xz (liblzma) $XZ_VER"
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unpack xz-$XZ_VER.tar.gz xz-$XZ_VER
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cd "$B/xz-$XZ_VER"
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./configure --host=$HOSTTRIPLE --build=$BUILDTRIPLE --prefix="$DEP" \
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--disable-shared --enable-static --with-pic \
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--disable-xz --disable-xzdec --disable-lzmadec --disable-lzmainfo \
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--disable-scripts --disable-doc --disable-nls >/dev/null
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make -j"$(nproc)" >/dev/null && make install >/dev/null
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log "bzip2 $BZIP2_VER"
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unpack bzip2-$BZIP2_VER.tar.gz bzip2-$BZIP2_VER
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cd "$B/bzip2-$BZIP2_VER"
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# bzip2 has no configure; drive its Makefile directly.
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make -j"$(nproc)" libbz2.a CC="$CC" AR="$AR" RANLIB="$RANLIB" \
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CFLAGS="-O2 -fPIC -D_FILE_OFFSET_BITS=64 -Wall -Winline" >/dev/null
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install -m644 libbz2.a "$DEP/lib/"
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install -m644 bzlib.h "$DEP/include/"
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log "expat $EXPAT_VER"
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unpack expat-$EXPAT_VER.tar.gz expat-$EXPAT_VER
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cd "$B/expat-$EXPAT_VER"
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./configure --host=$HOSTTRIPLE --build=$BUILDTRIPLE --prefix="$DEP" \
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--disable-shared --enable-static --with-pic \
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--without-docbook --without-examples --without-tests >/dev/null
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make -j"$(nproc)" >/dev/null && make install >/dev/null
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echo "-- $DEP/lib --"; ls "$DEP/lib"
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# ============================================ 3. CPython, cross =============
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log "CPython $PY_VER cross for $HOSTTRIPLE"
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unpack Python-$PY_VER.tgz Python-$PY_VER
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cd "$B/Python-$PY_VER"
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# Answers configure cannot probe because it may not run target binaries.
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cat > "$B/config.site" <<'EOF'
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ac_cv_file__dev_ptmx=yes
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ac_cv_file__dev_ptc=no
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ac_cv_buggy_getaddrinfo=no
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ac_cv_little_endian_double=yes
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ac_cv_big_endian_double=no
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ac_cv_mixed_endian_double=no
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ac_cv_working_tzset=yes
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ac_cv_have_long_long_format=yes
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ac_cv_no_strict_aliasing=no
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ac_cv_pthread_system_supported=yes
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EOF
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export CONFIG_SITE="$B/config.site"
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export CPPFLAGS="-I$DEP/include"
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export LDFLAGS="-L$DEP/lib"
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# -latomic: 64-bit atomics on mips32 are out-of-line calls into libatomic, and
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# CPython 3.13's _Py_atomic_* on 64-bit types needs them.
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# -lm: because the sqlite/lzma/expat libraries here are STATIC. A shared
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# libsqlite3.so carries its own DT_NEEDED on libm; a libsqlite3.a does not,
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# so configure's `checking for sqlite3_bind_double in -lsqlite3` link probe
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# fails with a wall of `undefined reference to floor/log/pow/...` and 3.13
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# silently records _sqlite3 as "missing" -- which is the one module this
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# whole build exists for. It is a probe failure, not a compile failure, so
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# nothing in the build output says why.
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export LIBS="-latomic -lm"
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export CFLAGS="-O2 -D_FILE_OFFSET_BITS=64"
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# Bypass pkg-config for sqlite and state the static link line outright, so the
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# -lm above cannot be reordered out from under the probe.
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export LIBSQLITE3_CFLAGS="-I$DEP/include"
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export LIBSQLITE3_LIBS="-L$DEP/lib -lsqlite3 -lm"
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./configure \
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--host=$HOSTTRIPLE --build=$BUILDTRIPLE \
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--with-build-python="$HOSTPY/bin/python3.13" \
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--prefix=$PREFIX \
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--disable-shared \
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--without-ensurepip \
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--disable-test-modules \
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--with-openssl="$DEP" \
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--with-system-expat \
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${PY_EXTRA_CONFIGURE:-} 2>&1 | tee "$OUT/configure.log" | tail -60
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echo "-- configure: modules it decided it could not build --"
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grep -iE 'could not be built|missing|failed to build' -A6 "$OUT/configure.log" | tail -40 || true
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make -j"$(nproc)" 2>&1 | tee "$OUT/make.log" | tail -40
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echo "-- build: modules that failed --"
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grep -iE 'necessary bits|could not be found|failed to build these' -A10 "$OUT/make.log" | tail -40 || true
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rm -rf "$STAGE"
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make install DESTDIR="$STAGE" 2>&1 | tail -20
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# ============================================ 4. gates + package ============
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# NO ABI GATE HERE. This used to walk every ELF in the install stage and pin e_flags per ELF
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# type -- 0x70001405 for an EXEC, 0x70001407 for a DYN. It was one of five
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|
# implementations of that rule and the strictest of them, strict enough to be
|
|
# wrong: the low three bits are NOREORDER/PIC/CPIC and vary between objects of
|
|
# identical ABI, so an exact-word compare refuses files the kernel loads
|
|
# happily. qa/replica/test_abi.py asks the question once, over the installed
|
|
# filesystem, masking those bits off.
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|
|
|
# _sqlite3 is the reason this build exists. Its absence must be a hard error,
|
|
# not a line in a 400-line make log that nobody reads.
|
|
if ! ls "$STAGE$PREFIX/lib/python3.13/lib-dynload/"_sqlite3*.so >/dev/null 2>&1; then
|
|
echo "!! NO _sqlite3 MODULE WAS BUILT -- see $OUT/configure.log and config.log"
|
|
exit 1
|
|
fi
|
|
echo "_sqlite3 present: $(basename "$(ls "$STAGE$PREFIX/lib/python3.13/lib-dynload/"_sqlite3*.so)")"
|
|
|
|
echo "-- NEEDED of the interpreter --"
|
|
mips-linux-gnu-readelf -d "$STAGE$PREFIX/bin/python3.13" | grep -E 'NEEDED|RPATH|RUNPATH' || true
|
|
echo "-- lib-dynload --"
|
|
ls "$STAGE$PREFIX/lib/python3.13/lib-dynload/" | sed 's/\.cpython.*//' | sort | tr '\n' ' '; echo
|
|
|
|
log "sizes"
|
|
FULL=$(du -sm "$STAGE" | cut -f1)
|
|
# trimmed: what would actually ship
|
|
rm -rf "$W/stage-trim"
|
|
cp -a "$STAGE" "$W/stage-trim"
|
|
rm -rf "$W/stage-trim$PREFIX/lib/python3.13/test" \
|
|
"$W/stage-trim$PREFIX/lib/python3.13/idlelib" \
|
|
"$W/stage-trim$PREFIX/lib/python3.13/tkinter" \
|
|
"$W/stage-trim$PREFIX/lib/python3.13/turtledemo" \
|
|
"$W/stage-trim$PREFIX/lib/python3.13/config-"* \
|
|
"$W/stage-trim$PREFIX/include" \
|
|
"$W/stage-trim$PREFIX/share"
|
|
find "$W/stage-trim" -name '__pycache__' -prune -exec rm -rf {} + 2>/dev/null || true
|
|
find "$W/stage-trim" -name '*.a' -delete
|
|
mips-linux-gnu-strip "$W/stage-trim$PREFIX/bin/python3.13" 2>/dev/null || true
|
|
find "$W/stage-trim$PREFIX/lib/python3.13/lib-dynload" -name '*.so' \
|
|
-exec mips-linux-gnu-strip {} + 2>/dev/null || true
|
|
TRIM=$(du -sm "$W/stage-trim" | cut -f1)
|
|
echo "staged : ${FULL} MB, $(find "$STAGE" -type f | wc -l) files"
|
|
echo "trimmed : ${TRIM} MB, $(find "$W/stage-trim" -type f | wc -l) files"
|
|
|
|
log "tarballs"
|
|
# The tarball's root is 'usr/data/anvil/...' relative -- unpack with -C /
|
|
( cd "$STAGE" && tar -czf "$OUT/py313-full.tgz" usr )
|
|
( cd "$W/stage-trim" && tar -czf "$OUT/py313.tgz" usr )
|
|
ls -l "$OUT"/*.tgz
|
|
chown -R "${HOST_UID:-0}:${HOST_GID:-0}" "$W" 2>/dev/null || true
|
|
|
|
END=$(date +%s)
|
|
log "done in $(( (END-START)/60 ))m $(( (END-START)%60 ))s"
|