subagent transcript

session 17f09f89 · workflow wf_b0622fdd
← 17f09f89 · archive
delegated task
CONTEXT — porting PySide6 6.11 QtCore bindings to WebAssembly (emscripten 4.0.12, static, no-dlopen, ASYNCIFY, JS-exceptions) for a FreeCAD-wasm build
▸ Magik
CONTEXT — porting PySide6 6.11 QtCore bindings to WebAssembly (emscripten 4.0.12, static, no-dlopen, ASYNCIFY, JS-exceptions) for a FreeCAD-wasm build. Toolchain: run `source /opt/toolchains/emsdk/emsdk_env.sh` first, then use emcc/emar/emnm (emscripten's llvm-nm) / emcc -c. Paths: - PySide6 source: /tmp/pyside-setup/sources/pyside6 (PySide6 module dir: .../PySide6). shiboken6 source: /tmp/pyside-setup/sources/shiboken6 - Generated QtCore wrappers (already produced): /home/magik6k/lcad-wasm/pyside-port/build/m2-qtcore/gen/PySide6/QtCore/*.cpp (module header: pyside6_qtcore_python.h) - Built archive under test: /home/magik6k/lcad-wasm/pyside-port/build/m2-qtcore/libQtCore_wasm.a - Build script that produced it: /home/magik6k/lcad-wasm/pyside-port/m2-qtcore/build.sh (IMPORTANT: it compiles ONLY the generated wrapper *.cpp into the archive; it compiles NONE of the glue TUs. It excludes files matching *numpy*.) - Sibling archives present at final link: libpyside_wasm.a (pyside-port/build/libpyside/), libShiboken_wasm.a (pyside-port/build/shiboken-mod/), libshiboken_wasm.a (pyside-port/build/m0-minimal/) - Qt (asyncify wasm): /opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread (static libs in lib/libQt6*.a, headers in include/). Built single-thread (QT_FEATURE_thread=-1). - Python wasm: /opt/toolchains/python-wasm (headers include/python3.14, static libs in lib/). CPython 3.14.4. - Host moc for glue that needs it: /opt/toolchains/qt/6.11.1/gcc_64/libexec/moc - shiboken generated-inc dir: /home/magik6k/lcad-wasm/pyside-port/build/shiboken-wasm-inc (has sbkversion.h, embed/*) KNOWN (but INCOMPLETE — wasm-ld stopped at "too many errors") undefined symbols when linking FreeCAD against libQtCore_wasm.a: - QtCoreHelper::QGenericArgumentHolder::* and QtCoreHelper::QGenericReturnArgumentHolder::* (ctor/dtor/data/metaType/toGenericReturnArgument/operator=) - PyTime_ImportAndCheck(_object*) - QLocale::qt_check_for_QGADGET_macro(), and same for QMimeType, QNativeIpcKey, QStandardPaths, QLocationPermission AUTHORITATIVE FACT: sources/pyside6/PySide6/QtCore/CMakeLists.txt compiles 4 glue translation units into the QtCore module that build.sh is currently MISSING: glue/qeasingcurve_glue.cpp, glue/core_snippets.cpp, glue/qtcorehelper.cpp, glue/qiopipe.cpp qiopipe.cpp contains Q_OBJECT and #include "qiopipe.moc" (needs moc). qt_check_for_QGADGET_macro is a Q_GADGET moc-marker method that is DECLARED but NEVER defined anywhere (confirmed: not in libQt6Core.a) — shiboken wrongly generated a Python binding that CALLS it. The build.sh compile flags for wrappers are: EMFLAGS="-fexceptions -O2 -DNDEBUG -std=c++17 -DSHIBOKEN_NO_EMBEDDING_PYC=1 -DAVOID_PROTECTED_HACK=1" INCS="-I<gen> -I<shiboken-wasm-inc> -I<inc>/embed -I<python3.14> -I<shiboken6/libshiboken> -I<pyside6/libpyside> -I<PySide6/QtCore> -I<PySide6> -I<qtinc> -I<qtinc/QtCore> -I<qtinc/QtCore/6.11.1> -I<qtinc/QtCore/6.11.1/QtCore> -I<qt/mkspecs/wasm-emscripten>" GOAL: produce the COMPLETE set of changes to build.sh so that ONE rebuild yields an archive that links into FreeCAD with ZERO undefined symbols. Be concrete and evidence-based: cite file:line, and RUN emnm/emcc/grep to verify claims. Do not speculate — compile things and check. YOUR DIMENSION — empirical complete unresolved-symbol set. Do this concretely: 1. `emnm libQtCore_wasm.a` → collect all 'U' (undefined) symbols (demangle with c++filt where useful). 2. Build the "provided" symbol universe: emnm the sibling archives (libpyside_wasm.a, libShiboken_wasm.a, libshiboken_wasm.a), the Qt asyncify libs actually linked by FreeCAD (at least libQt6Core.a; also check libQt6Gui/Widgets if referenced), and the python-wasm libs — collecting their 'T/W/etc' defined symbols. 3. ALSO compile the 4 glue TUs (qeasingcurve_glue.cpp, core_snippets.cpp, qtcorehelper.cpp, qiopipe.cpp) to objects in a scratch dir (/tmp/glueprobe-B) with the build.sh flag/include set (adapt paths; run moc on qiopipe first) and add THEIR defined symbols to the provided set. 4. Compute: undefined(archive) MINUS provided(everything) = the TRUE remaining-undefined set. Group by root cause. This is the ground truth of what still breaks after adding glue. Return the remaining-undefined list exhaustively in remainingUndefinedSymbols, and requiredActions to resolve each group.
Fable
thinking
I'm setting up the toolchain and gathering the undefined symbols from the archive to start analyzing the data.
Fable
I'll start by gathering the empirical symbol data. Let me set up the toolchain and inspect the archive.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\nwhich emnm emcc emar c++filt\nls -la /home/magik6k/lcad-wasm/pyside-port/build/m2-qtcore/libQtCore_wasm.a", "description": "Source toolchain and verify tools"}
tool result
/opt/toolchains/emsdk/upstream/emscripten/emnm
/opt/toolchains/emsdk/upstream/emscripten/emcc
/opt/toolchains/emsdk/upstream/emscripten/emar
/bin/c++filt
-rw-r--r-- 1 magik6k magik6k 12035476 Jul  5 15:38 /home/magik6k/lcad-wasm/pyside-port/build/m2-qtcore/libQtCore_wasm.a
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
⚙ Bash {"command": "cat /home/magik6k/lcad-wasm/pyside-port/m2-qtcore/build.sh", "description": "Read build.sh"}
tool result
#!/usr/bin/env bash
# M2: FULL QtCore (QObject + signals + all core value types) binding for wasm.
# Produces libQtCore_wasm.a exporting PyInit_QtCore, linked against the asyncify
# Qt headers + libpyside (signals) + shiboken runtime.
set -euo pipefail
source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null

GEN=/opt/toolchains/pyside-host/bin/shiboken6
SHIB=/tmp/pyside-setup/sources/shiboken6
PS=/tmp/pyside-setup/sources/pyside6
PSDIR=$PS/PySide6
LIBPYSIDE=$PS/libpyside
INC=/home/magik6k/lcad-was  …[truncated]
Fable
thinking
I'm gathering the undefined symbols from the archive.
Fable
Let me collect the undefined symbols from the archive and set up the scratch dir.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\nmkdir -p /tmp/glueprobe-B\ncd /tmp/glueprobe-B\nemnm /home/magik6k/lcad-wasm/pyside-port/build/m2-qtcore/libQtCore_wasm.a 2>/dev/null | awk '$1==\"U\"{print $2}' | sort -u …
tool result
3885 undef_raw.txt
=== sample ===
__cxa_atexit
__cxa_bad_typeid
__cxa_begin_catch
__cxa_end_catch
__cxa_find_matching_catch_2
__cxa_find_matching_catch_3
__cxa_rethrow
__dso_handle
__dynamic_cast
FallbackRichCompare
FinishSignatureInitBytes
getTempRet0
__indirect_function_table
InitSignatureBytes
invoke_di
invoke_did
invoke_dii
invoke_diii
invoke_diiiii
invoke_fii
invoke_fiii
invoke_i
invoke_ii
invoke_iid
invoke_iidii
invoke_iif
invoke_iii
invoke_iiii
invoke_iiiii
invoke_iiiiii
invoke_iiiiiii
in  …[truncated]
Fable
thinking
I'm seeing thousands of undefined symbols from the linker, mostly standard runtime functions. I need to gather all the symbol definitions from the related archives and libraries—Qt, Python, and the sibling archives—so I can build a complete "provided" set to resolve these references.
Fable
Now let me locate all the provider archives and build the provided symbol universe.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\necho \"=== sibling archives ===\"\nls -la /home/magik6k/lcad-wasm/pyside-port/build/libpyside/*.a 2>/dev/null\nls -la /home/magik6k/lcad-wasm/pyside-port/build/shiboken-mod…
tool result
=== sibling archives ===
-rw-r--r-- 1 magik6k magik6k 734850 Jul  5 14:44 /home/magik6k/lcad-wasm/pyside-port/build/libpyside/libpyside_wasm.a
-rw-r--r-- 1 magik6k magik6k 21440 Jul  5 13:36 /home/magik6k/lcad-wasm/pyside-port/build/shiboken-mod/libShiboken_wasm.a
-rw-r--r-- 1 magik6k magik6k 338020 Jul  5 13:25 /home/magik6k/lcad-wasm/pyside-port/build/m0-minimal/libminimal_wasm.a
-rw-r--r-- 1 magik6k magik6k 774296 Jul  5 13:25 /home/magik6k/lcad-wasm/pyside-port/build/m0-minimal/libshiboken_w  …[truncated]
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\ncd /tmp/glueprobe-B\n: > provided_raw.txt\nfor a in \\\n /home/magik6k/lcad-wasm/pyside-port/build/libpyside/libpyside_wasm.a \\\n /home/magik6k/lcad-wasm/pyside-port/bui…
tool result
0 provided_raw.txt
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
Let me check what format these archives are using for the output.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\necho \"=== Qt6Core sample ===\"\nemnm /opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/lib/libQt6Core.a 2>&1 | head -20", "description": "Inspect emnm output format"}
tool result
=== Qt6Core sample ===

mocs_compilation.cpp.o:
0000082c d .L.str
00000840 d .L.str.2
0000099c d .L.str.9
         U _Z26qt_QMetaEnum_debugOperatorR6QDebugxPK11QMetaObjectPKc
         U _Z30qt_QMetaEnum_flagDebugOperatorR6QDebugyPK11QMetaObjectPKc
         U _ZN10QArrayData10deallocateEPS_ii
         U _ZN10QByteArray11reallocDataEiN10QArrayData16AllocationOptionE
         U _ZN10QByteArray6insertEi14QByteArrayView
         U _ZN10QByteArrayC1EPKci
00000740 D _ZN11QDataStream16staticMetaObjectE
  …[truncated]
Fable
thinking
I'm realizing the awk pattern is matching the wrong field because the output format varies—defined symbols have the address in the first column, but undefined symbols start with "U" in the first column. I need to adjust my approach to handle both cases: when there's an address followed by type and name, versus when it's just "U" followed by the name.
Fable
The format has an address column. Let me fix the parsing.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\ncd /tmp/glueprobe-B\n: > provided_raw.txt\nfor a in \\\n /home/magik6k/lcad-wasm/pyside-port/build/libpyside/libpyside_wasm.a \\\n /home/magik6k/lcad-wasm/pyside-port/bui…
tool result
74663 provided_raw.txt
=== also collect all python-wasm libs defined ===
18390 provided_pylibs.txt
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
Looking at the provided set, I need to compile the four glue translation units and determine their flags, then align the paths with what build.sh expects.
Fable
Now let me compile the 4 glue TUs. First let me examine them.
Fable
⚙ Bash {"command": "PS=/tmp/pyside-setup/sources/pyside6\nls -la $PS/PySide6/QtCore/glue/\necho \"=== CMakeLists reference ===\"\ngrep -n \"glue/\" $PS/PySide6/QtCore/CMakeLists.txt | head\necho \"=== qiopipe.cpp moc includes ===\"\ngrep -n \"\\.m…
tool result
total 40
drwx------ 1 magik6k magik6k   202 Jul  5 11:02 .
drwx------ 1 magik6k magik6k   218 Jul  5 11:02 ..
-rw------- 1 magik6k magik6k 10033 Jul  5 11:02 core_snippets.cpp
-rw------- 1 magik6k magik6k  4472 Jul  5 11:02 core_snippets_p.h
-rw------- 1 magik6k magik6k  3282 Jul  5 11:02 qeasingcurve_glue.cpp
-rw------- 1 magik6k magik6k   876 Jul  5 11:02 qeasingcurve_glue.h
-rw------- 1 magik6k magik6k  3230 Jul  5 11:02 qiopipe.cpp
-rw------- 1 magik6k magik6k  51  …[truncated]
Fable
thinking
I need to track down the qiopipe header file and understand the include dependencies — it looks like qiopipe.cpp requires Qt private headers, so I'll need to check where qiopipe.h is located in the QtCore directory structure and then replicate the build flags to compile everything together.
Fable
⚙ Bash {"command": "PS=/tmp/pyside-setup/sources/pyside6\nfind $PS/PySide6/QtCore -name \"qiopipe.h\" -o -name \"qtcorehelper.h\" 2>/dev/null\necho \"=== check private headers avail in wasm Qt ===\"\nls /opt/toolchains/qt-asyncify/6.11.1/wasm_sing…
tool result
=== check private headers avail in wasm Qt ===
/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/include/QtCore/6.11.1/QtCore/private/qobject_p.h
qobject_p FOUND
=== includes in the other glue files ===
--- core_snippets ---
5:#include "core_snippets_p.h"
6:#include "qtcorehelper.h"
7:#include "pysideqobject.h"
9:#include "sbkpython.h"
10:#include "sbkconverter.h"
11:#include "sbkpep.h"
15:#include "basewrapper.h"
16:#include "autodecref.h"
17:#include "gilstate.h"
18:#include "pysideutils.h"  …[truncated]
Fable
thinking
I'm noticing that qiopipe.h and qtcorehelper.h aren't in the expected QtCore directory, so I need to search more broadly across the PySide6 codebase. Since qeasingcurve_glue.cpp successfully includes from "glue/qeasingcurve_glue.h", the include paths must be configured to reach QtCore, so these missing headers should be findable somewhere in the project structure.
Fable
⚙ Bash {"command": "PS=/tmp/pyside-setup/sources/pyside6\nfind $PS -name \"qiopipe.h\" -o -name \"qtcorehelper.h\" 2>/dev/null\necho \"=== does generated gen dir contain these? ===\"\nfind /home/magik6k/lcad-wasm/pyside-port/build/m2-qtcore/gen -n…
tool result
/tmp/pyside-setup/sources/pyside6/PySide6/qiopipe.h
/tmp/pyside-setup/sources/pyside6/PySide6/qtcorehelper.h
=== does generated gen dir contain these? ===
=== search whole build tree ===
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
The headers are already in place through the PySide6 directory, and the build script has the include path set up. Now I need to compile the glue files by running moc on qiopipe.cpp to generate the required moc file, then set up the compilation environment to match what build.sh uses.
Fable
Now let me compile the 4 glue TUs with the build.sh flags.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\nSHIB=/tmp/pyside-setup/sources/shiboken6\nPS=/tmp/pyside-setup/sources/pyside6\nPSDIR=$PS/PySide6\nLIBPYSIDE=$PS/libpyside\nINC=/home/magik6k/lcad-wasm/pyside-port/build/sh…
tool result
=== moc qiopipe ===
moc done: -rw-r--r-- 1 magik6k magik6k 2974 Jul  5 18:02 /tmp/pyside-setup/sources/pyside6/PySide6/QtCore/glue/qiopipe.moc
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
The moc file generation worked—qiopipe.cpp includes "qiopipe.moc" relatively, so it should find it in the source directory. Now I'm compiling all four glue files.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\nSHIB=/tmp/pyside-setup/sources/shiboken6\nPS=/tmp/pyside-setup/sources/pyside6\nPSDIR=$PS/PySide6\nLIBPYSIDE=$PS/libpyside\nINC=/home/magik6k/lcad-wasm/pyside-port/build/sh…
tool result
=== compile qeasingcurve_glue ===
FAIL qeasingcurve_glue
clang: error: unknown argument: '-fexceptions -O2 -DNDEBUG -std=c++17 -DSHIBOKEN_NO_EMBEDDING_PYC=1 -DAVOID_PROTECTED_HACK=1'
=== compile core_snippets ===
FAIL core_snippets
clang: error: unknown argument: '-fexceptions -O2 -DNDEBUG -std=c++17 -DSHIBOKEN_NO_EMBEDDING_PYC=1 -DAVOID_PROTECTED_HACK=1'
=== compile qtcorehelper ===
FAIL qtcorehelper
clang: error: unknown argument: '-fexceptions -O2 -DNDEBUG -std=c++17 -DSHIBOKEN_NO_EMBEDDING_P  …[truncated]
Fable
thinking
The issue is that quoting EMFLAGS causes it to be treated as a single argument instead of being word-split. Since the default shell is zsh and it doesn't word-split unquoted variables like bash does, I need to either explicitly run bash or use arrays instead. I'll wrap the command in bash explicitly or create a script since build.sh already uses bash.
Fable
The shell is zsh (no word-splitting). Let me run in bash.
Fable
⚙ Bash {"command": "cat > /tmp/glueprobe-B/compile.sh <<'EOF'\n#!/usr/bin/env bash\nset -uo pipefail\nsource /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\nSHIB=/tmp/pyside-setup/sources/shiboken6\nPS=/tmp/pyside-setup/sources/pyside6\nPSDIR=$PS/…
tool result
=== compile qeasingcurve_glue ===
OK qeasingcurve_glue
=== compile core_snippets ===
OK core_snippets
=== compile qtcorehelper ===
OK qtcorehelper
=== compile qiopipe ===
OK qiopipe
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
All 4 glue TUs compiled. Now let me collect their defined symbols and compute the true remaining-undefined set.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\ncd /tmp/glueprobe-B\n# defined symbols from glue objects\nfor o in qeasingcurve_glue.o core_snippets.o qtcorehelper.o qiopipe.o; do\n emnm $o 2>/dev/null | awk 'NF==3 && $…
tool result
182 provided_glue.txt
75963 provided_all.txt
367 remaining.txt
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
I see there are 367 symbols left to examine, but most of them are emscripten runtime artifacts like invoke functions, C++ exception handling symbols, and emscripten builtins that get linked in at the final stage rather than coming from archives. I need to filter those out to identify the actual unresolved symbols at the application level.
Fable
⚙ Bash {"command": "cd /tmp/glueprobe-B\necho \"=== ALL 367 remaining ===\"\ncat remaining.txt", "description": "Show all remaining undefined"}
tool result
=== ALL 367 remaining ===
__cxa_atexit
__cxa_bad_typeid
__cxa_begin_catch
__cxa_end_catch
__cxa_find_matching_catch_2
__cxa_find_matching_catch_3
__cxa_rethrow
__dso_handle
__dynamic_cast
getTempRet0
__indirect_function_table
invoke_di
invoke_did
invoke_dii
invoke_diii
invoke_diiiii
invoke_fii
invoke_fiii
invoke_i
invoke_ii
invoke_iid
invoke_iidii
invoke_iif
invoke_iii
invoke_iiii
invoke_iiiii
invoke_iiiiii
invoke_iiiiiii
invoke_iiiiiiii
invoke_iiiiiiiii
invoke_iiiiiiiiii
invoke_iiiiiiiiiiii
inv  …[truncated]
Fable
thinking
I'm identifying which undefined symbols are actually compiler runtime functions that Emscripten resolves automatically during the final linking stage, so they're not actual problems to worry about—things like exception handling symbols, memory functions, and WebAssembly table references.

The real issue is the Q_GADGET markers that shiboken generated bindings for but were never actually defined in the Qt libraries themselves. These are the actual undefined symbols I need to track down and fix.

Then there's the init_QXxx functions — each wrapper class should define its own initialization function, and the module wrapper calls them all during setup. If these are showing as undefined, it means  …
Fable
Important: I need to also subtract the archive's OWN defined symbols (a symbol can be defined in one member and undefined in another). Let me recompute.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\ncd /tmp/glueprobe-B\n# archive's OWN defined symbols\nemnm /home/magik6k/lcad-wasm/pyside-port/build/m2-qtcore/libQtCore_wasm.a 2>/dev/null | awk 'NF==3 && $2 ~ /^[TWBDRVtw…
tool result
14147 archive_defined.txt
=== after subtracting archive's own defined: ===
130 remaining2.txt
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
So there are 130 symbols still unresolved. The init_QXxx symbols I thought were undefined are actually defined within the archive itself—they're referenced by the module wrapper but defined in the wrapper.cpp members. Let me look at what those 130 remaining ones are.
Fable
⚙ Bash {"command": "cd /tmp/glueprobe-B\ncat remaining2.txt", "description": "Show 130 true remaining"}
tool result
__cxa_atexit
__cxa_bad_typeid
__cxa_begin_catch
__cxa_end_catch
__cxa_find_matching_catch_2
__cxa_find_matching_catch_3
__cxa_rethrow
__dso_handle
__dynamic_cast
getTempRet0
__indirect_function_table
invoke_di
invoke_did
invoke_dii
invoke_diii
invoke_diiiii
invoke_fii
invoke_fiii
invoke_i
invoke_ii
invoke_iid
invoke_iidii
invoke_iif
invoke_iii
invoke_iiii
invoke_iiiii
invoke_iiiiii
invoke_iiiiiii
invoke_iiiiiiii
invoke_iiiiiiiii
invoke_iiiiiiiiii
invoke_iiiiiiiiiiii
invoke_iiiiiiiiiiiii
invoke_i  …[truncated]
Fable
thinking
I'm sorting through these 130 symbols by categorizing them, starting with the Emscripten runtime functions and C++ exception handling symbols that get resolved automatically during the final link stage—things like the C++ ABI exception handlers and dynamic cast operations that aren't actually problematic.

The next batch includes more Emscripten internals like the indirect function table and stack pointer, the invoke wrappers for JavaScript exception handling, standard C library functions like malloc and string operations, memory allocation operators from libc++abi, and the C++ type info vtables—all of which are provided by Emscripten's default system libraries at link time, so they're not r  …
Fable
Let me categorize by investigating the real (non-runtime) symbols. First the QIOPipe meta, QThread, and QGADGET issues.
Fable
⚙ Bash {"command": "PS=/tmp/pyside-setup/sources/pyside6\necho \"=== qiopipe.h: does QtCoreHelper::QIOPipe have Q_OBJECT? ===\"\ngrep -n \"Q_OBJECT\\|class .*QIOPipe\\|namespace\" $PS/PySide6/qiopipe.h\necho \"\"\necho \"=== qiopipe.cpp classes ==…
tool result
=== qiopipe.h: does QtCoreHelper::QIOPipe have Q_OBJECT? ===
15:namespace QtCoreHelper
18:class QIOPipePrivate;
19:class QIOPipe : public QObject
21:    Q_OBJECT
33:} // namespace QtCoreHelper

=== qiopipe.cpp classes ===
16:namespace QtCoreHelper
19:class QPipeEndPoint : public QIODevice
21:    Q_OBJECT
38:class QIOPipePrivate final : public QObjectPrivate
139:} // namespace QtCoreHelper
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
I'm checking what the generated qiopipe.moc file actually contains — specifically whether it has the meta-object code for QIOPipe or just for QPipeEndP, since the header includes Q_OBJECT and moc should process it when compiling qiopipe.cpp.
Fable
⚙ Bash {"command": "GLUE=/tmp/pyside-setup/sources/pyside6/PySide6/QtCore/glue\necho \"=== classes with meta in qiopipe.moc (moc of .cpp) ===\"\ngrep -o \"QtCoreHelper::[A-Za-z]*::qt_metacall\\|struct qt_meta_tag[A-Za-z_]*\\|Q_OBJECT.*for.*\" $GLU…
tool result
=== classes with meta in qiopipe.moc (moc of .cpp) ===
struct qt_meta_tag_ZN
QtCoreHelper::QPipeEndPoint::qt_metacall
36:template <> constexpr inline auto QtCoreHelper::QPipeEndPoint::qt_create_metaobjectdata<qt_meta_tag_ZN12QtCoreHelper13QPipeEndPointE_t>()
40:        "QtCoreHelper::QPipeEndPoint"
49:    return QtMocHelpers::metaObjectData<QPipeEndPoint, qt_meta_tag_ZN12QtCoreHelper13QPipeEndPointE_t>(QMC::MetaObjectFlag{}, qt_stringData,
52:Q_CONSTINIT const QMetaObject QtCoreHelper::QPipeEndP  …[truncated]
Fable
thinking
I see the issue now—the moc output for qiopipe.moc only contains the QPipeEndPoint metadata, but the QIOPipe class metadata is missing because the header file qiopipe.h was never processed through moc. I need to run moc on the header to generate moc_qiopipe.cpp and include that in the build. Let me check the QThread references next.
Fable
QIOPipe meta comes from moc'ing the header (missing). Let me verify and check who references QThread/QSemaphore and the QGADGET calls.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\nGLUE=/tmp/pyside-setup/sources/pyside6/PySide6/QtCore/glue\nMOC=/opt/toolchains/qt/6.11.1/gcc_64/libexec/moc\nQT=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread\nQTINC…
tool result
=== moc the header qiopipe.h ===
2
moc_qiopipe defines QIOPipe meta
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
I'm compiling moc_qiopipe.cpp to verify it generates the four required QIOPipe symbols—qt_metacall, qt_metacast, metaObject, and typeinfo. I also need to trace which object files are pulling in QThread and QSemaphore references.
Fable
⚙ Bash {"command": "cat > /tmp/glueprobe-B/compile_moc.sh <<'EOF'\n#!/usr/bin/env bash\nset -uo pipefail\nsource /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\nSHIB=/tmp/pyside-setup/sources/shiboken6\nPS=/tmp/pyside-setup/sources/pyside6\nPSDIR=…
tool result
OK moc_qiopipe
=== moc_qiopipe.o defined syms for QIOPipe ===
00000054 T _ZN12QtCoreHelper7QIOPipe11qt_metacallEN11QMetaObject4CallEiPPv
00000025 T _ZN12QtCoreHelper7QIOPipe11qt_metacastEPKc
00000004 D _ZN12QtCoreHelper7QIOPipe16staticMetaObjectE
00000001 T _ZN12QtCoreHelper7QIOPipe18qt_static_metacallEP7QObjectN11QMetaObject4CallEiPPv
000000d4 d _ZN12QtCoreHelper7QIOPipe32qt_staticMetaObjectStaticContentIN12_GLOBAL__N_139qt_meta_tag_ZN12QtCoreHelper7QIOPipeE_tEEE
00000000 d _ZN12QtCoreHelper7QI  …[truncated]
Fable
thinking
Looking at the symbol definitions from moc_qiopipe.o, I can see it provides the four QIOPipe symbols I need, though it introduces a new undefined reference to the QIOPipe constructor that should be resolved by the glue code in qiopipe.cpp.

So Category C is handled by including the moc output. Now I need to investigate Category D — the QThread and QSemaphore references — to determine if they're actually missing from libQt6Core.a or if there's something else going on.
Fable
moc_qiopipe.o resolves all 4 QIOPipe symbols. Now let me investigate QThread/QSemaphore (Category D) and the QGADGET calls (Category B).
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\nQTCORE=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/lib/libQt6Core.a\necho \"=== are QThread symbols truly absent from libQt6Core.a? ===\"\nfor s in _ZN7QThread11se…
tool result
Exit code 1
=== are QThread symbols truly absent from libQt6Core.a? ===
_ZN7QThread11setPriorityENS_8PriorityE -> defined:NONE  QThread::setPriority(QThread::Priority)
_ZNK7QThread12serviceLevelEv -> defined:NONE  QThread::serviceLevel() const
_ZNK7QThread8priorityEv -> defined:NONE  QThread::priority() const
_ZNK7QThread9loopLevelEv -> defined:NONE  QThread::loopLevel() const
_ZN10QSemaphore10tryAcquireEii -> defined:NONE  QSemaphore::tryAcquire(int, int)

=== which archive members reference th  …[truncated]
Fable
thinking
QThread and QSemaphore symbols are missing from the static library because threading is disabled, and they're only referenced in two wrapper objects. I'm tracking down the complete list of undefined references to confirm they're isolated to just qthread_wrapper.o and qsemaphore_wrapper.o.

The issue is that QSemaphore::tryAcquire with a timeout overload needs threading support, so it's not compiled in. Simply excluding those wrapper files would create new undefined symbols (init_QThread and init_QSemaphore) since the module wrapper calls all the init functions. Instead, I could provide stub definitions for the five missing QThread and QSemaphore symbols to keep the bindings linked without ac  …
Fable
QThread/QSemaphore symbols confirmed absent (thread feature off), referenced only by their wrappers. Now let me examine the QGADGET calls and their source, plus check the module wrapper's init_ references.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\nGD=/home/magik6k/lcad-wasm/pyside-port/build/m2-qtcore/gen/PySide6/QtCore\necho \"=== where is qt_check_for_QGADGET_macro CALLED in generated code? ===\"\ngrep -rn \"qt_che…
tool result
=== where is qt_check_for_QGADGET_macro CALLED in generated code? ===
/home/magik6k/lcad-wasm/pyside-port/build/m2-qtcore/gen/PySide6/QtCore/qcborerror_wrapper.cpp:124:static PyObject *Sbk_QCborErrorFunc_qt_check_for_QGADGET_macro(PyObject *self)
/home/magik6k/lcad-wasm/pyside-port/build/m2-qtcore/gen/PySide6/QtCore/qcborerror_wrapper.cpp:134:        // QCborError::qt_check_for_QGADGET_macro()
/home/magik6k/lcad-wasm/pyside-port/build/m2-qtcore/gen/PySide6/QtCore/qcborerror_wrapper.cpp:135:       …[truncated]
Fable
thinking
I'm seeing how these wrapper files generate a Python method that wraps Qt's internal `qt_check_for_QGADGET_macro` — a special marker method that the Q_GADGET macro declares to detect when moc code generation is needed.

The issue is that shiboken incorrectly generates bindings for this internal marker, which causes linker errors since the method is intentionally never defined. The upstream fix would be to reject it in the typesystem, but for a build-only solution, I can either provide stub definitions for all 17 classes or patch the generated wrappers to remove the calls. Providing stubs is simpler and safer, though I need to verify whether `qt_check_for_QGADGET_macro` is declared as public   …
Fable
17 wrapper files call `cppSelf->qt_check_for_QGADGET_macro()`. Let me check the declaration form and test a stub-definition approach.
Fable
⚙ Bash {"command": "QTINC=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/include\necho \"=== Q_GADGET macro definition ===\"\ngrep -rn \"qt_check_for_QGADGET_macro\" $QTINC/QtCore/qtmetamacros.h\necho \"\"\necho \"=== so declaration is: ===\…
tool result
=== Q_GADGET macro definition ===
/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/include/QtCore/qtmetamacros.h:157:    void qt_check_for_QGADGET_macro(); \

=== so declaration is: ===
#define Q_GADGET_EXPORT(...) \
public: \
    static __VA_ARGS__ const QMetaObject staticMetaObject; \
    void qt_check_for_QGADGET_macro(); \
    typedef void QtGadgetHelper; \
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
The issue is that `qt_check_for_QGADGET_macro()` is declared as a public member function in the Q_GADGET macro but never actually defined, so I need to provide out-of-class implementations for each class that uses it. Since it's public and non-static, I can just add empty function bodies for each affected class like `QLocale::qt_check_for_QGADGET_macro() {}` and then rebuild.

Now I'm identifying all 17 classes that need these stub definitions and mapping them to their corresponding Qt headers so I can include the right ones in my compilation unit.
Fable
Declaration is a public non-static `void qt_check_for_QGADGET_macro()`. Let me build a stub TU defining all 17 and verify it compiles.
Fable
⚙ Bash {"command": "cat > /tmp/glueprobe-B/qgadget_stubs.cpp <<'EOF'\n// Stub definitions for Q_GADGET/Q_OBJECT moc-marker methods that Qt declares\n// but never defines. shiboken erroneously generates Python bindings that call\n// them; provide e…
tool result
FAIL
/tmp/glueprobe-B/qgadget_stubs.cpp:13:10: fatal error: 'QtCore/QCoreEvent' file not found
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
⚙ Bash {"command": "QTINC=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/include\nfor h in QEvent QCoreEvent qcoreevent.h QMimeType QNativeIpcKey QPermissions QDirListing; do\n echo \"--- $h ---\"; ls $QTINC/QtCore/ | grep -i \"^${h}$\\|^${…
tool result
--- QEvent ---
QEvent
--- QCoreEvent ---
--- qcoreevent.h ---
qcoreevent.h
--- QMimeType ---
QMimeType
--- QNativeIpcKey ---
QNativeIpcKey
--- QPermissions ---
QPermissions
--- QDirListing ---
QDirListing
=== find event header ===
QAbstractEventDispatcher
qabstracteventdispatcher.h
QAbstractEventDispatcherV2
QAbstractNativeEventFilter
qabstractnativeeventfilter.h
QChildEvent
qcoreevent.h
QDynamicPropertyChangeEvent
QEvent
QEventLoop
qeventloop.h
QEventLoopLocker
QTimerEvent
QWinEventNotifier
qwi  …[truncated]
Fable
⚙ Edit {"replace_all": false, "file_path": "/tmp/glueprobe-B/qgadget_stubs.cpp", "old_string": "#include <QtCore/QCoreEvent>", "new_string": "#include <QtCore/QEvent>"}
tool result
The file /tmp/glueprobe-B/qgadget_stubs.cpp has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
⚙ Bash {"command": "bash /tmp/glueprobe-B/compile_stub.sh\nsource /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\necho \"=== stub defines how many qt_check symbols ===\"\nemnm /tmp/glueprobe-B/qgadget_stubs.o 2>/dev/null | grep -c \"qt_check_for_Q…
tool result
OK stub
=== stub defines how many qt_check symbols ===
17
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
Now I'm moving on to build the QThread and QSemaphore stubs, checking the exact function signatures and return types from the headers.
Fable
Stub resolves all 17. Now the QThread/QSemaphore stubs. Let me check exact signatures.
Fable
⚙ Bash {"command": "QTINC=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/include\necho \"=== QThread decls ===\"\ngrep -n \"setPriority\\|Priority priority\\|loopLevel\\|serviceLevel\\|QualityOfService\\|enum Priority\" $QTINC/QtCore/qthread…
tool result
=== QThread decls ===
41:    enum Priority {
55:    enum class QualityOfService {
60:    Q_ENUM(QualityOfService)
62:    void setPriority(Priority priority);
63:    Priority priority() const;
78:    int loopLevel() const;
82:    void setServiceLevel(QualityOfService serviceLevel);
83:    QualityOfService serviceLevel() const;

=== QSemaphore tryAcquire ===
23:    bool tryAcquire(int n = 1);
25:    bool tryAcquire(int n, int timeout);
26:    bool tryAcquire(int n, QDeadlineTimer timeout);
29:      …[truncated]
Fable
thinking
I found that `QSemaphore::tryAcquire(int n, int timeout)` is actually defined inline in the header file, which delegates to another overload using `QDeadlineTimer`. This inline definition should be available everywhere the header is included, so the undefined reference in the archive is puzzling—it suggests the inline definition might not have been properly emitted or the wrapper is somehow bypassing it.

Let me check if the entire `QSemaphore` class or this specific method is guarded by a configuration macro like `QT_CONFIG(thread)`, which could explain why the symbol isn't being generated.
Fable
QSemaphore::tryAcquire(int,int) appears defined inline at line 59. Let me look closer — it may be config-guarded.
Fable
⚙ Read {"file_path": "/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/include/QtCore/qsemaphore.h", "limit": 70}
tool result
1	// Copyright (C) 2016 The Qt Company Ltd.
2	// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3	// Qt-Security score:significant reason:default
4	
5	#ifndef QSEMAPHORE_H
6	#define QSEMAPHORE_H
7	
8	#include <QtCore/qglobal.h>
9	#include <QtCore/qdeadlinetimer.h>
10	
11	#include <chrono>
12	
13	QT_BEGIN_NAMESPACE
14	
15	class QSemaphorePrivate;
16	class Q_CORE_EXPORT QSemaphore
17	{
18	public:
19	    explicit QSemaphore(int n = 0);
20	    ~QSe  …[truncated]
Fable
thinking
The `#if QT_CORE_INLINE_IMPL_SINCE(6, 6)` guard at line 59 evaluates to false during the library build, meaning the function definition gets compiled into libQt6Core.a as an out-of-line implementation rather than being inlined. So `tryAcquire(int,int)` should actually be present in the static library.

But it's not — the symbol is undefined. The culprit is that qsemaphore.cpp is entirely excluded from the build because the thread feature is disabled (`QT_CONFIG(thread)` is false), so the out-of-line definition never gets compiled. The wrapper also can't emit an inline version since the guard is false. This means QSemaphore is essentially missing from the thread-disabled Qt build.

Now I'm ch  …
Fable
The QSemaphore/QThread methods are genuinely absent (thread feature off). Let me check the QualityOfService enum and QThread::Priority values, then build a stub.
Fable
⚙ Bash {"command": "QTINC=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/include\nsed -n '41,60p' $QTINC/QtCore/qthread.h", "description": "Read QThread enum values"}
tool result
    enum Priority {
        IdlePriority,

        LowestPriority,
        LowPriority,
        NormalPriority,
        HighPriority,
        HighestPriority,

        TimeCriticalPriority,

        InheritPriority
    };

    enum class QualityOfService {
        Auto,
        High,
        Eco,
    };
    Q_ENUM(QualityOfService)
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
⚙ Bash {"command": "cat > /tmp/glueprobe-B/qthread_stubs.cpp <<'EOF'\n// Stub definitions for QThread/QSemaphore methods that are compiled out of the\n// single-threaded (QT_FEATURE_thread=-1) wasm libQt6Core.a but for which\n// shiboken generated…
tool result
OK tstub
=== defined ===
00000013 T _ZN10QSemaphore10tryAcquireEii
00000001 T _ZN7QThread11setPriorityENS_8PriorityE
0000000e T _ZNK7QThread12serviceLevelEv
00000004 T _ZNK7QThread8priorityEv
00000009 T _ZNK7QThread9loopLevelEv
_ZN10QSemaphore10tryAcquireEii
_ZN7QThread11setPriorityENS_8PriorityE
_ZNK7QThread12serviceLevelEv
_ZNK7QThread8priorityEv
_ZNK7QThread9loopLevelEv
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
All the QThread and QSemaphore symbols are now resolved. I need to recalculate what's still undefined after including moc_qiopipe.o, qgadget_stubs.o, and qthread_stubs.o in the linker set, and verify whether the new `_ZN12QtCoreHelper7QIOPipeC1EP7QObject` symbol that moc_qiopipe.o introduced is actually provided by the qiopipe.o glue object.

I also need to check that these new objects themselves don't introduce additional undefined symbols beyond what the archive already has. Let me compute the complete picture: combine the archive's undefined symbols with any undefined symbols from the new objects, then subtract everything that's provided by the externals and the newly defined symbols from  …
Fable
All 5 resolved. Now let me do the comprehensive final computation: treat archive + all 4 glue + moc_qiopipe + 2 stub TUs as the new combined link unit, and see what's truly left after external providers.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\ncd /tmp/glueprobe-B\nNEWOBJS=\"qeasingcurve_glue.o core_snippets.o qtcorehelper.o qiopipe.o moc_qiopipe.o qgadget_stubs.o qthread_stubs.o\"\n# defined by new objects\nfor o…
tool result
0 new_defined.txt
0 new_undef.txt
0 total
=== FINAL remaining after all fixes ===
171 FINAL_remaining.txt
__cxa_atexit
__cxa_bad_typeid
__cxa_begin_catch
__cxa_end_catch
__cxa_find_matching_catch_2
__cxa_find_matching_catch_3
__cxa_rethrow
__dso_handle
__dynamic_cast
getTempRet0
__indirect_function_table
invoke_di
invoke_did
invoke_dii
invoke_diii
invoke_diiiii
invoke_fii
invoke_fiii
invoke_i
invoke_ii
invoke_iid
invoke_iidii
invoke_iif
invoke_iii
invoke_iiii
invoke_iiiii
invoke_iiiiii
invoke_ii  …[truncated]
Fable
thinking
I'm noticing the new objects are showing zero defined/undefined symbols, which is strange since earlier runs of emnm on those same object files revealed symbols. The issue might be with how I'm parsing the emnm output format — let me verify what the actual output looks like. The files are coming up empty even though running `emnm` directly on the object files shows symbols, so something's wrong with how the loop is executing. Let me isolate and re-run just that section to see what's actually happening.
Fable
The new-objects loop produced 0 — a scripting glitch (the earlier direct emnm clearly showed symbols). Let me redo it correctly.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\ncd /tmp/glueprobe-B\nls -la moc_qiopipe.o qgadget_stubs.o qthread_stubs.o qeasingcurve_glue.o core_snippets.o qtcorehelper.o qiopipe.o\necho \"=== raw emnm qgadget_stubs.o …
tool result
-rw-r--r-- 1 magik6k magik6k 21340 Jul  5 18:02 core_snippets.o
-rw-r--r-- 1 magik6k magik6k  4196 Jul  5 18:05 moc_qiopipe.o
-rw-r--r-- 1 magik6k magik6k  5946 Jul  5 18:02 qeasingcurve_glue.o
-rw-r--r-- 1 magik6k magik6k  1316 Jul  5 18:07 qgadget_stubs.o
-rw-r--r-- 1 magik6k magik6k 11901 Jul  5 18:03 qiopipe.o
-rw-r--r-- 1 magik6k magik6k 12586 Jul  5 18:02 qtcorehelper.o
-rw-r--r-- 1 magik6k magik6k   569 Jul  5 18:08 qthread_stubs.o
=== raw emnm qgadget_stubs.o (first lines) ===
00000001 T  …[truncated]
Fable
thinking
The awk command is working now, so the earlier failure was likely due to the error redirection in that combined block — specifically how I was piping `emnm` with `2>/dev/null`. Let me run through the full computation again from scratch to make sure everything works cleanly.
Fable
Works now. Let me rerun the full final computation cleanly.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\ncd /tmp/glueprobe-B\n: > new_defined.txt; : > new_undef.txt\nfor o in qeasingcurve_glue.o core_snippets.o qtcorehelper.o qiopipe.o moc_qiopipe.o qgadget_stubs.o qthread_stu…
tool result
  220 new_defined.txt
  137 new_undef.txt
  357 total
=== FINAL remaining count ===
114 FINAL_remaining.txt
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
⚙ Bash {"command": "cd /tmp/glueprobe-B\n# separate toolchain-runtime (auto-provided at emcc link) from real app symbols\ngrep -vE '^(__cxa_|__dso_handle$|__dynamic_cast$|getTempRet0$|__indirect_function_table$|invoke_|malloc$|memcmp$|_pthread_cle…
tool result
=== REAL app-level remaining undefined (non-toolchain) ===
7 FINAL_app.txt
_ZNKSt3__219__shared_weak_count13__get_deleterERKSt9type_info
_ZNSt3__217bad_function_callD1Ev
_ZNSt3__219__shared_weak_count14__release_weakEv
_ZNSt3__219__shared_weak_countD2Ev
_ZTINSt3__217bad_function_callE
_ZTINSt3__219__shared_weak_countE
_ZTVNSt3__217bad_function_callE
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
The remaining 7 app-level symbols are all internal libc++ symbols related to shared_ptr and bad_function_call, which are provided by the standard library at link time, so they're not actual problems.

Since emcc bundles libc++ automatically, these symbols will be resolved during the final link even though they weren't in my ext_provided list. These are definitely standard library symbols—std::__2::__shared_weak_count is the shared_ptr control block and std::__2::bad_function_call comes from <functional>—so I should verify they're present in emscripten's sysroot cache to confirm they'll be resolved.
Fable
The 7 remaining are all libc++ internals (shared_ptr control block, bad_function_call). Let me verify they're provided by emscripten's bundled libc++.
Fable
⚙ Bash {"command": "source /opt/toolchains/emsdk/emsdk_env.sh 2>/dev/null\nCACHE=/opt/toolchains/emsdk/upstream/emscripten/cache/sysroot/lib\necho \"=== search emscripten libc++ / libc++abi for the 7 symbols ===\"\nfor lib in $(find $CACHE -name \…
tool result
=== search emscripten libc++ / libc++abi for the 7 symbols ===
  lib: /opt/toolchains/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libc++-legacyexcept.a
  lib: /opt/toolchains/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libc++abi-ww-noexcept.a
  lib: /opt/toolchains/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libc++abi-debug-mt-wasmexcept.a
  lib: /opt/toolchains/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libc++abi-ww-wasmex  …[truncated]
Fable
thinking
All the remaining undefined symbols are actually provided by emscripten's bundled libc++ and libc++abi, which get automatically linked in by emcc. So once I add the glue code, moc output, and stubs, there are no true application-level undefined symbols left—everything else in the remaining list is just toolchain runtime stuff like invoke functions, exception handling symbols, libc, operator new/delete, and typeinfo vtables that emcc handles automatically at link time. Let me verify one more thing...

I'm confirming that the symbols I filtered out as toolchain-provided are genuinely all covered by emscripten, libc, libc++, compiler-rt, and JavaScript exception handling. The std::__sort templa  …
Fable
All 7 are provided by emscripten's bundled libc++/libc++abi (auto-linked). So zero true application-level undefined remain. Let me verify the specific KNOWN-undefined symbols from the task are now covered by the glue/moc/stubs.
Fable
⚙ Bash {"command": "cd /tmp/glueprobe-B\necho \"=== KNOWN task symbols: are they now DEFINED by glue/moc/stubs? ===\"\nfor s in \\\n _ZN12QtCoreHelper22QGenericArgumentHolderC1ERK9QMetaTypePKv \\\n _ZNK12QtCoreHelper22QGenericArgumentHolder17toG…
tool result
=== KNOWN task symbols: are they now DEFINED by glue/moc/stubs? ===
  [DEFINED-by-new] QtCoreHelper::QGenericArgumentHolder::QGenericArgumentHolder(QMetaType const&, void const*)
  [DEFINED-by-new] QtCoreHelper::QGenericArgumentHolder::toGenericArgument() const
  [DEFINED-by-new] QtCoreHelper::QGenericReturnArgumentHolder::toGenericReturnArgument() const
  [DEFINED-by-new] PyTime_ImportAndCheck(_object*)
  [DEFINED-by-new] QLocale::qt_check_for_QGADGET_macro()
  [DEFINED-by-new] QMimeType::qt_ch  …[truncated]
Fable
thinking
I've confirmed that core_snippets.cpp and qtcorehelper.cpp define the necessary functions like PyTime_ImportAndCheck and invokeMetaMethod. Now I'm checking whether the glue translation units reference PySide symbols such as PySideEasingCurveFunctor and PySide::addPostRoutine, which appear to be coming up in the analysis.

Looking at the final computation, these symbols are actually resolved—they're provided either by the glue code itself or by libpyside_wasm.a, so they don't show up in the final undefined list. The empirical result of only 7 libc++ symbols in the final build confirms everything is clean. I'm also verifying that the moc marker approach with qt_check stubs won't create duplica  …
Fable
Everything resolves. Let me do a final sanity grep on FINAL_remaining for any QtCoreHelper/QIOPipe/Q leftovers, and confirm the complete remaining set is purely toolchain + libc++.
Fable
⚙ Bash {"command": "cd /tmp/glueprobe-B\necho \"=== any QtCoreHelper / QIOPipe / qt_check / QThread / QSemaphore / PySide / Py..ImportAndCheck left in FINAL_remaining? ===\"\ngrep -E \"QtCoreHelper|QIOPipe|qt_check|QThread|QSemaphore|PySide|Import…
tool result
=== any QtCoreHelper / QIOPipe / qt_check / QThread / QSemaphore / PySide / Py..ImportAndCheck left in FINAL_remaining? ===
NONE — all resolved

=== full FINAL_remaining (should be ONLY toolchain + libc++ std) ===
getTempRet0
_pthread_cleanup_pop
_pthread_cleanup_push
operator delete[](void*)
operator delete[](void*, unsigned long)
operator delete(void*)
operator delete(void*, unsigned long)
operator new[](unsigned long)
std::__2::__shared_weak_count::__get_deleter(std::type_info const&) const
s  …[truncated]
Fable
thinking
All the remaining undefined symbols are coming from the toolchain runtime and C++ standard library, which emcc automatically provides at the final link stage. I've resolved the application-level issues by adding four glue translation units, the moc-generated file for qiopipe, and stub implementations for qgadget and qthread that cover all the missing definitions.

Now I'm ready to write out the exact build.sh modifications—I'll add the compilation steps for these new files right before the archive section, using the paths and compiler flags already defined in the script. The archive build step already globs all .o files from $OUT, so any new object files I write there will be automatically i  …
Fable
I now have complete empirical ground truth. Let me compose the final answer. Summary of findings: - Archive undefined (raw): 3885, of which 130 remain after subtracting external providers + archive's own definitions. - Adding the 4 glue TUs + moc'd header + 2 stub TUs reduces true application-level undefined to **0**. - The only symbols still undefined in the archive are toolchain/stdlib symbols (`invoke_*`, `__cxa_*`, `malloc`, `operator new/delete`, `std::__2::__shared_weak_count`, `std::__2::bad_function_call`, `__cxxabiv1` typeinfo vtables, `getTempRet0`, `_pthread_cleanup_*`), all auto-provided by emcc's default libc/libc++/libc++abi/compiler-rt and JS-EH codegen at the FreeCAD final link — verified present in `/opt/toolchains/emsdk/.../libc++.a` and `libc++abi.a`.
Fable
⚙ StructuredOutput {"requiredActions": [{"action": "Compile the 4 glue translation units listed in QtCore/CMakeLists.txt (qeasingcurve_glue.cpp, core_snippets.cpp, qtcorehelper.cpp, qiopipe.cpp) into the archive. qiopipe.cpp needs its own moc (.cpp->.moc, for…
tool result
Structured output provided successfully