subagent transcript

session 17f09f89 · workflow wf_4f35050d
← 17f09f89 · archive
delegated task
Rebuilding the FreeCAD-wasm PySide binding stack with NATIVE wasm exceptions (new-EH / try_table, -fwasm-exceptions -sWASM_LEGACY_EXCEPTIONS=0) to mat
▸ Magik
Rebuilding the FreeCAD-wasm PySide binding stack with NATIVE wasm exceptions (new-EH / try_table, -fwasm-exceptions -sWASM_LEGACY_EXCEPTIONS=0) to match the JSPI + wasm-EH toolchain (qt-jspi is try_table). Mixed EH => invalid module, so EVERY C++ archive must be new-EH with ZERO 'U invoke_' symbols. Env: source /opt/toolchains/emsdk/emsdk_env.sh AND export LD_LIBRARY_PATH=/home/magik6k/lcad-wasm/pyside-port/libshim (host shiboken6 needs the libclang shim). Working dir /home/magik6k/lcad-wasm/pyside-port. The build scripts there ALREADY have the new-EH flags applied. QtCore was already rebuilt new-EH (build/m2-qtcore/, validated). VERIFY each output archive: (a) it exists + has its PyInit symbol; (b) new-EH: emnm <archive> | grep -c 'U invoke_' MUST be 0 (invoke_ = JS-EH leftover = fail); (c) optional: extract one .o, link 'int main(){}' + the .o with 'em++ -fwasm-exceptions -sWASM_LEGACY_EXCEPTIONS=0 -sJSPI -sERROR_ON_UNDEFINED_SYMBOLS=0' and node -e 'WebAssembly.validate(...)' == true. Report the archive path, PyInit symbol presence, invoke_ count (must be 0), and pass/fail. BUILD libpyside new-EH. Run: cd /home/magik6k/lcad-wasm/pyside-port && bash libpyside-build.sh -> build/libpyside/libpyside_wasm.a. VERIFY 0 invoke_. Report.
Fable
thinking
I'm starting to examine the build process for libpyside with new-EH, so I need to check the build script and current environment setup.
Fable
⚙ Bash {"command": "cat /home/magik6k/lcad-wasm/pyside-port/libpyside-build.sh", "description": "Read libpyside build script"}
tool result
#!/usr/bin/env bash
set -euo pipefail
source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null
QT=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread; QTINC=$QT/include
PS=/tmp/pyside-setup/sources/pyside6/libpyside; SHIB=/tmp/pyside-setup/sources/shiboken6
INC=/home/magik6k/lcad-wasm/pyside-port/build/shiboken-wasm-inc; PYINC=/opt/toolchains/python-wasm/include/python3.14
OUT=/home/magik6k/lcad-wasm/pyside-port/build/libpyside; rm -rf "$OUT"; mkdir -p "$OUT"
QTFLAGS="-I$QTINC -I$QTINC/QtCore -I$Q  …[truncated]
Fable
⚙ Bash {"command": "ls /home/magik6k/lcad-wasm/pyside-port/build/ 2>/dev/null; echo \"---libshim---\"; ls /home/magik6k/lcad-wasm/pyside-port/libshim 2>/dev/null; echo \"---which emnm---\"; which emnm 2>/dev/null || echo \"emnm not in path yet\"",…
tool result
glstubs
libpyside
m0-minimal
m1lite
m1-qtcore
m2-qtcore
m2-qtgui
m2-qtwidgets
numpy-wasm
pivy-coin
qtgui
qtwidgets
shiboken-gen
shiboken-host
shiboken-mod
shiboken-wasm-inc
---libshim---
libclang-21.so.21
---which emnm---
emnm not found
emnm not in path yet
zshexit:1: parameter HISTDB_FD  …[truncated]
Fable
thinking
I need to locate the libshim directory at the specified path and run the build script, making sure the LD_LIBRARY_PATH environment variable is set correctly. Let me verify the prerequisites are in place—checking that the temporary directory and shiboken include path exist—before executing the build.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null; export LD_LIBRARY_PATH=/home/magik6k/lcad-wasm/pyside-port/libshim; cd /home/magik6k/lcad-wasm/pyside-port && bash libpyside-build.sh 2>&1 | tail -20", "description": "Run …
tool result
== libpyside_wasm.a: 603984 bytes, 19 objects
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
The build succeeded, so now I need to verify the PyInit symbol and check that invoke_ count is zero. Though libpyside is a support library rather than a Python module, so it might not have a PyInit symbol at all—I should check both anyway. I need to locate emnm, which should be in the emsdk.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null; A=/home/magik6k/lcad-wasm/pyside-port/build/libpyside/libpyside_wasm.a\necho \"exists: $(ls -la $A | awk '{print $5}') bytes\"\necho \"=== invoke_ count ===\"\nemnm $A 2>/d…
tool result
exists: 603984 bytes
=== invoke_ count ===
0
=== PyInit symbols ===
=== sample invoke lines (should be none) ===
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
libpyside is a support library rather than a Python module, so it doesn't need a PyInit symbol—that requirement only applies to the actual binding modules. Now I'll do a quick link validation by extracting an object file and linking it with a main program to make sure everything works together.
Fable
Build succeeded with 0 invoke_ symbols. Let me run the optional link+validate check to fully confirm new-EH compatibility.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\ncd /tmp/claude-1000/-home-magik6k-lcad-wasm/*/scratchpad 2>/dev/null || cd /tmp\nW=/home/magik6k/lcad-wasm/pyside-port/build/libpyside\ncp \"$W/signalmanager.o\" ./sm.o 2>/…
tool result
validate: true
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
All checks pass.
Fable
⚙ StructuredOutput {"component": "libpyside", "ok": true, "invokeCount": 0, "archivePath": "/home/magik6k/lcad-wasm/pyside-port/build/libpyside/libpyside_wasm.a", "pyinitPresent": false, "validated": true, "notes": "Built via `bash libpyside-build.sh` (new-EH…
tool result
Structured output provided successfully