mirror of
https://github.com/Klipper4FlashForge/firmware.git
synced 2026-10-22 05:12:16 -05:00
Oleksandr ShyshatskyiandClaude Opus 5
fd258eadf7
Its anti-bot interstitial serves a 12KB HTML page under the tarball's URL. curl -f accepts it -- it is a 200 -- so the download "succeeds" and the failure surfaces one step later as a checksum mismatch, which is the report reserved for a tampered file. Nobody bumping a pin should have to rule out an attack first. madler publishes the release as a GitHub asset, and it is byte-identical: sha256 9a93b2b7...df23, the pin already in versions.env, unchanged. tools/python/build.sh fetched the same file from the same host and moves with it, so neither path is left on the URL that lies. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0149y4iyLpEwYKh2PS4fmf4u
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-$PY_VER.tgz
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fetch https://github.com/madler/zlib/releases/download/v$ZLIB_VER/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
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# wrong: the low three bits are NOREORDER/PIC/CPIC and vary between objects of
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# identical ABI, so an exact-word compare refuses files the kernel loads
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# happily. qa/replica/test_abi.py asks the question once, over the installed
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# filesystem, masking those bits off.
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# _sqlite3 is the reason this build exists. Its absence must be a hard error,
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# not a line in a 400-line make log that nobody reads.
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if ! ls "$STAGE$PREFIX/lib/python3.13/lib-dynload/"_sqlite3*.so >/dev/null 2>&1; then
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echo "!! NO _sqlite3 MODULE WAS BUILT -- see $OUT/configure.log and config.log"
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exit 1
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fi
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echo "_sqlite3 present: $(basename "$(ls "$STAGE$PREFIX/lib/python3.13/lib-dynload/"_sqlite3*.so)")"
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echo "-- NEEDED of the interpreter --"
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mips-linux-gnu-readelf -d "$STAGE$PREFIX/bin/python3.13" | grep -E 'NEEDED|RPATH|RUNPATH' || true
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echo "-- lib-dynload --"
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ls "$STAGE$PREFIX/lib/python3.13/lib-dynload/" | sed 's/\.cpython.*//' | sort | tr '\n' ' '; echo
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log "sizes"
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FULL=$(du -sm "$STAGE" | cut -f1)
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# trimmed: what would actually ship
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rm -rf "$W/stage-trim"
|
|
cp -a "$STAGE" "$W/stage-trim"
|
|
rm -rf "$W/stage-trim$PREFIX/lib/python3.13/test" \
|
|
"$W/stage-trim$PREFIX/lib/python3.13/idlelib" \
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|
"$W/stage-trim$PREFIX/lib/python3.13/tkinter" \
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|
"$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"
|