mirror of
https://github.com/Klipper4FlashForge/firmware.git
synced 2026-10-22 05:12:16 -05:00
Oleksandr ShyshatskyiandClaude Opus 5
9b5b562a22
A sweep over every commented file in the tree. What is kept is what a reader needs to change the code safely: what a thing is, its signature, the invariants other files depend on, and the traps that fail silently (find's non-zero exit under set -e, s6's baked-in libexecdir, the -lm that decides whether _sqlite3 exists, opkg's compile-time prefix). What goes is the narration around it: incident histories, arguments against alternatives already rejected, restatements of the code below, and paragraphs re-explaining a rule three files already state. One paragraph in pkgs/3rdparty/opkg/build.sh was duplicated outright. Comment lines 7971 -> 6158. Every change is comment-only: no non-comment line differs anywhere in the 86 files, checked mechanically. Commented-out config directives (#fast_feed: 30000 and friends) are documentation of defaults and are kept. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NMMpQTajN7RDJySrhQ2cTE
119 lines
5.3 KiB
Bash
Executable File
119 lines
5.3 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
# CPython, cross-compiled for the printer against the seven libraries this
|
|
# feed already builds.
|
|
#
|
|
# THE SEVEN LIBRARIES ARE STATIC AND NONE OF THEM SHIPS WITH THIS PACKAGE.
|
|
# They arrive as -dev packages and link into the interpreter and its extension
|
|
# modules, so the printer has no .so of ours to find at runtime: no
|
|
# LD_LIBRARY_PATH to get right and no chance of picking up one of
|
|
# FlashForge's /usr/prog copies (/usr/prog carries libffi.so.8 while the
|
|
# rootfs carries .so.7). The cost is a few MB of duplicated libcrypto.
|
|
set -euo pipefail
|
|
. ./bin/common.sh
|
|
. pkgs/lib.sh
|
|
|
|
pkg_begin python || exit 0
|
|
pkg_toolchain
|
|
pkg_deps
|
|
pkg_buildpython
|
|
pkg_unpack "$PY_TGZ"
|
|
|
|
_sys="$PKG_SYSROOT$MODDIR"
|
|
|
|
# Answers to the questions configure settles by compiling and RUNNING a probe,
|
|
# which it cannot do cross. Left unanswered they either stop configure or
|
|
# default to the conservative answer, producing a working interpreter with
|
|
# subtly wrong float and time behaviour.
|
|
cat > "$PKG_WORK/src/config.site" <<'EOF'
|
|
ac_cv_file__dev_ptmx=yes
|
|
ac_cv_file__dev_ptc=no
|
|
ac_cv_buggy_getaddrinfo=no
|
|
ac_cv_little_endian_double=yes
|
|
ac_cv_big_endian_double=no
|
|
ac_cv_mixed_endian_double=no
|
|
ac_cv_working_tzset=yes
|
|
ac_cv_have_long_long_format=yes
|
|
ac_cv_no_strict_aliasing=no
|
|
ac_cv_pthread_system_supported=yes
|
|
EOF
|
|
export CONFIG_SITE="$PWD/$PKG_WORK/src/config.site"
|
|
export CFLAGS="-O2 -D_FILE_OFFSET_BITS=64"
|
|
|
|
# Both of these are why the gates at the bottom of this file exist:
|
|
# -latomic 64-bit atomics on mips32 are out-of-line calls into libatomic,
|
|
# which CPython 3.13's _Py_atomic_* on 64-bit types needs.
|
|
# libatomic.so.1 is on the rootfs, so this is a runtime
|
|
# dependency, not a static link.
|
|
# -lm because libsqlite3 here is STATIC, and a .a carries no DT_NEEDED
|
|
# on libm. configure's sqlite3 probe then fails on undefined
|
|
# floor/log/pow, and CPython records _sqlite3 as missing and
|
|
# carries on -- a probe failure, so nothing says why it is absent.
|
|
export LIBS="-latomic -lm"
|
|
# And the same link line stated outright, bypassing pkg-config, so that -lm
|
|
# cannot be reordered out from under the probe.
|
|
export LIBSQLITE3_CFLAGS="-I$_sys/include"
|
|
export LIBSQLITE3_LIBS="-L$_sys/lib -lsqlite3 -lm"
|
|
|
|
# --disable-shared: no libpython3.13.so to find at runtime, for the same
|
|
# reason the seven libraries are static. Extension modules resolve their
|
|
# Python symbols out of the interpreter's own dynamic symbol table.
|
|
# --without-ensurepip: pip needs a network and a compiler, and a printer has
|
|
# neither. The build-python has the opposite answer; see pkg_buildpython.
|
|
# --disable-test-modules: a third of the tree, none of which runs here.
|
|
pkg_build "Python-$PY_VERSION" \
|
|
--build=x86_64-linux-gnu \
|
|
--with-build-python="$HOSTPY" \
|
|
--disable-shared \
|
|
--without-ensurepip \
|
|
--disable-test-modules \
|
|
--with-openssl="$_sys" \
|
|
--with-system-expat
|
|
|
|
# ------------------------------------------------------------------ the trim
|
|
#
|
|
# idlelib and turtledemo, tkinter (there is no X11), share/, every __pycache__
|
|
# (12MB of .pyc the interpreter regenerates if it wants them) and
|
|
# libpython3.13.a (35MB that exists to link a python that is not this one).
|
|
#
|
|
# Done here rather than by PKG_EXCLUDE because these are paths, not names:
|
|
# PKG_EXCLUDE is a `find -name` sweep, and `-name test` over a CPython tree
|
|
# takes a dozen legitimate submodules with it.
|
|
_st="$PKG_WORK/stage$MODDIR"
|
|
rm -rf "$_st/lib/python$PY_MM/idlelib" \
|
|
"$_st/lib/python$PY_MM/tkinter" \
|
|
"$_st/lib/python$PY_MM/turtledemo" \
|
|
"$_st/share"
|
|
rm -f "$_st/lib/libpython$PY_MM.a" \
|
|
"$_st/lib/python$PY_MM/config-$PY_MM-"*/"libpython$PY_MM.a"
|
|
find "$_st" -name '__pycache__' -type d -exec rm -rf {} + 2>/dev/null || true
|
|
|
|
# ------------------------------------------------------------------ the ship
|
|
#
|
|
# ONE BINARY OUT OF bin/, BY NAME. `make install` also leaves python3, idle3,
|
|
# pydoc3 and the *-config scripts there, and naming what ships is what keeps
|
|
# bin/python3 -- which would shadow FlashForge's interpreter on the PATH
|
|
# anvil-env.sh exports -- off a printer. Naming rather than removing means a
|
|
# future CPython that installs one more launcher is excluded by default.
|
|
#
|
|
# site-packages rides along inside lib/python3.13/ and needs no line of its
|
|
# own: `make install` creates it empty and this package owns it.
|
|
pkg_ship "bin/python$PY_MM" "lib/python$PY_MM" "include" "lib/pkgconfig"
|
|
|
|
# ----------------------------------------------------------------- the gates
|
|
#
|
|
# ONE PER BUILD DEPENDENCY, ASKED BY MODULE NAME. CPython does not fail when
|
|
# it cannot link a library: configure records the module as unavailable, make
|
|
# prints one line among hundreds, and the install succeeds. Without this the
|
|
# failure mode is a package that installs cleanly and raises ImportError on a
|
|
# printer.
|
|
_dyn="$PKG_OUT/lib/python$PY_MM/lib-dynload"
|
|
for _m in _ssl _hashlib _sqlite3 zlib _ctypes _lzma _bz2 pyexpat; do
|
|
ls "$_dyn/$_m".*.so >/dev/null 2>&1 \
|
|
|| pkg_die "python: NO $_m MODULE. Its library link probe failed silently -- see $PKG_WORK/Python-$PY_VERSION-configure.log"
|
|
done
|
|
[ -x "$PKG_OUT/bin/python$PY_MM" ] \
|
|
|| pkg_die "python: no bin/python$PY_MM came out of the install"
|
|
|
|
pkg_say "python: $(ls "$_dyn" | wc -l) stdlib extension modules, $(du -sh "$PKG_OUT/lib/python$PY_MM" | cut -f1) of library"
|
|
pkg_end
|