subagent transcript

session 17f09f89 · workflow wf_6c234df9
← 17f09f89 · archive
delegated task
GOAL: port PySide6 + shiboken6 to the FreeCAD WebAssembly toolchain (static, no-dlopen, asyncify, no-pthreads) so FreeCAD's Python/PySide workbenches
▸ Magik
GOAL: port PySide6 + shiboken6 to the FreeCAD WebAssembly toolchain (static, no-dlopen, asyncify, no-pthreads) so FreeCAD's Python/PySide workbenches and macros work in the browser. This is the keystone dependency. Ground EVERYTHING in the real files — investigate, do not speculate. ESTABLISHED GROUND TRUTH (verified this session): - PySide+shiboken SOURCE: /tmp/pyside-setup (git branch 6.11, matches Qt). sources/shiboken6, sources/shiboken6_generator, sources/pyside6 (check exact dir names). Built via setup.py + coin_build_instructions.py OR raw CMake per sources/*/CMakeLists.txt + README.*.md at repo root. - HOST toolchain (x86-64 Linux): clang/llvm 21 with libclang at /usr/lib/llvm-21/lib/libclang.so (llvm-config = 21.1.8); host CPython 3.14.4 (/usr/bin/python3, headers /opt/toolchains/src/Python-3.14.4/Include); host Qt 6.11.1 at /opt/toolchains/qt/6.11.1/gcc_64. - TARGET (wasm): emscripten 4.0.12 (/opt/toolchains/emsdk); Qt 6.11.1 asyncify single-thread at /opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread (QT_FEATURE_thread == -1, i.e. -no-feature-thread); wasm CPython 3.14 at /opt/toolchains/python-wasm (headers include/python3.14, lib/python3.14.zip). FreeCAD-wasm build dir: /opt/toolchains/src/freecad-gui-build (reads Qt6_DIR=qt-asyncify/.../wasm_singlethread). - FreeCAD build links Python C-extensions STATICALLY and registers them via PyImport_AppendInittab in a generated src/Main/WasmInittab*.cpp (NO dlopen on wasm). PySide bindings must follow this model: build as STATIC libs, expose PyInit_* for each module (PySide6.QtCore etc.), register in the inittab. - FreeCAD source: /home/magik6k/lcad-wasm/freecad-port/FreeCAD (branch wasm-port). It ships a PySide shim at src/Ext/PySide (a compat layer) and uses shiboken (getCppPointer/wrapInstance) e.g. in Gui/PythonWrapper.cpp. FREECAD_USE_PYSIDE/FREECAD_USE_SHIBOKEN currently OFF. - KNOWN HARD ISSUES to design around: (1) static + NO dlopen — PySide's normal build emits shared modules; must emit static + inittab. (2) Qt is -no-feature-thread — shiboken typesystem for QtCore references QThread/QMutex/etc.; those must be excluded/guarded. (3) CPython 3.14 C-API changes vs what PySide 6.11 targets. (4) asyncify + JS-exceptions (-fexceptions) flags must match FreeCAD's; libshiboken/libpyside signal dispatch must be single-thread/asyncify safe. (5) binary size (wasm is already 196 MB; each Qt binding module is tens of MB — target ONLY the modules FreeCAD needs). DELIVERABLES — do BOTH: 1. Write a thorough, concrete, execution-ready plan to /home/magik6k/lcad-wasm/pyside-port/<SLUG>/plan.md with exact commands, cmake args, file paths, patch snippets (precise enough to apply), and any test outputs you gathered. Put patch/new-file contents as separate files in that dir. If you build/test something, capture the real output. 2. Return the structured summary (schema). Depth goes in plan.md; keep summary fields tight. Token cost is not a concern — be exhaustive and correct. Prefer running real commands (grep, ls, cmake --help, small test builds) over speculation. === YOUR SCOPE: Build the shiboken6 generator on the host (attempt it for real) (slug: shiboken-hostgen-build) === The shiboken6 generator runs on the HOST and uses libclang to parse Qt headers. ACTUALLY BUILD IT: configure+build sources/shiboken6 (generator) with clang/llvm 21 (libclang at /usr/lib/llvm-21/lib), host Python 3.14, host Qt 6.11.1 gcc_64. Find the exact CMake invocation (LLVM_CONFIG / CLANG_DIR / Qt6_DIR / Python) from the shiboken CMakeLists + README.shiboken6-generator.md. Capture real build output. If it builds, note the shiboken binary path + how to invoke it (typesystem, include paths). If it fails, capture the exact errors and what's needed. This is the critical-path host tool. Create /home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/ and write plan.md (required) + any patches. Return the schema with deliverableFile=/home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/plan.md.
Fable
thinking
I'm starting to explore the shiboken6 source code and build toolchain to understand its structure and dependencies.
Fable
I'll investigate the shiboken6 source and toolchain, then attempt a real build. Let me start by exploring the environment.
Fable
⚙ Bash {"command": "ls -la /tmp/pyside-setup/ 2>&1 | head -50; echo \"---SOURCES---\"; ls -la /tmp/pyside-setup/sources/ 2>&1; echo \"---GIT---\"; cd /tmp/pyside-setup && git log --oneline -3 2>&1; git branch 2>&1", "description": "Explore pyside-…
tool result
total 192
drwxr-xr-x 14 agent agent  4096 Jul  5 11:02 .
drwxrwxrwt  1 root  root  20480 Jul  5 12:36 ..
-rw-r--r--  1 agent agent   279 Jul  5 11:02 .flake8
drwxr-xr-x  7 agent agent  4096 Jul  5 11:02 .git
-rw-r--r--  1 agent agent   416 Jul  5 11:02 .gitattributes
-rw-r--r--  1 agent agent  2012 Jul  5 11:02 .gitignore
-rw-r--r--  1 agent agent    86 Jul  5 11:02 .gitreview
drwxr-xr-x  2 agent agent  4096 Jul  5 11:02 .vscode
-rw-r--r--  1 agent agent  1024 Jul  5 11:02 CMakeLists.txt
drwxr-x  …[truncated]
Fable
⚙ Bash {"command": "echo \"=== llvm ===\"; /usr/bin/llvm-config-21 --version 2>&1 || llvm-config --version 2>&1; ls /usr/lib/llvm-21/lib/libclang.so* 2>&1; echo \"=== host python ===\"; /usr/bin/python3 --version 2>&1; echo \"=== host qt ===\"; ls…
tool result
=== llvm ===
21.1.8
/usr/lib/llvm-21/lib/libclang.so
=== host python ===
Python 3.14.4
=== host qt ===
Qt6
Qt6BuildInternals
Qt6BundledLibjpeg
Qt6BundledLibpng
Qt6Concurrent
Qt6Core
Qt6CorePrivate
Qt6CoreTools
Qt6DBus
Qt6DBusPrivate
=== clang ===
/bin/bash: line 7: clang: command not found
Fable
thinking
I'm looking at the README and CMakeLists files for the shiboken6 generator to understand its structure and build configuration.
Fable
⚙ Bash {"command": "cat /tmp/pyside-setup/README.shiboken6-generator.md; echo \"=====CMAKELISTS ROOT=====\"; cat /tmp/pyside-setup/CMakeLists.txt; echo \"=====shiboken6 CMakeLists=====\"; cat /tmp/pyside-setup/sources/shiboken6/CMakeLists.txt", "d…
tool result
# Shiboken6-generator

Shiboken is the generator used by the Qt for Python project. It outputs C++
code for CPython extensions, which can be compiled and transformed into
a Python module.

C++ projects based on Qt can be wrapped, but also projects which are not
related to Qt.

## How does it work?

Shiboken uses an API Extractor that does most of the job, but it requires
a typesystem (XML file) to customize how the C++ classes/methods will be
exposed to Python.

The typesystem allows you to remo  …[truncated]
Fable
⚙ Bash {"command": "ls -la /tmp/pyside-setup/sources/shiboken6/; echo \"===generator dir===\"; ls -la /tmp/pyside-setup/sources/shiboken6/generator/ 2>&1 | head; echo \"===shiboken6_generator source===\"; ls -la /tmp/pyside-setup/sources/shiboken6…
tool result
total 164
drwxr-xr-x  9 agent agent  4096 Jul  5 11:02 .
drwxr-xr-x  6 agent agent  4096 Jul  5 11:02 ..
-rw-r--r--  1 agent agent   178 Jul  5 11:02 .cmake.conf
-rw-r--r--  1 agent agent    61 Jul  5 11:02 .gitattributes
-rw-r--r--  1 agent agent    49 Jul  5 11:02 .gitignore
-rw-r--r--  1 agent agent   474 Jul  5 11:02 AUTHORS
-rw-r--r--  1 agent agent   584 Jul  5 11:02 CMakeLists.txt
-rw-r--r--  1 agent agent 18086 Jul  5 11:02 COPYING
-rw-r--r--  1 agent agent 26427 Jul  5 11:02 COPYING.lib  …[truncated]
Fable
thinking
I need to explore the generator's new location in shiboken6_generator and understand how it's configured, including the CMakeLists setup, the ShibokenSetup.cmake file, and how the super-project build works together.
Fable
⚙ Bash {"command": "echo \"===gen CMakeLists===\"; cat /tmp/pyside-setup/sources/shiboken6_generator/CMakeLists.txt; echo \"===gen cmake dir===\"; ls /tmp/pyside-setup/sources/shiboken6_generator/cmake/; echo \"===.cmake.conf===\"; cat /tmp/pyside…
tool result
===gen CMakeLists===
include(../shiboken6/icecc.cmake)
include(../shiboken6/.cmake.conf)

cmake_minimum_required(VERSION 3.22)
cmake_policy(VERSION 3.22)

project(shiboken_generator)

include(cmake/ShibokenGeneratorSetup.cmake)

get_rpath_base_token(base)

set(CMAKE_INSTALL_RPATH ${base}/)

set(CMAKE_BUILD_TYPE Release CACHE STRING "Build Type")

add_subdirectory(ApiExtractor) # Uses libclang
add_subdirectory(generator) # Uses ApiExtractor And QtCore

if(BUILD_TESTS)
    enable_testing()
    add  …[truncated]
Fable
thinking
I'm examining the CMake setup files that handle libclang detection for the generator.
Fable
⚙ Bash {"command": "cat /tmp/pyside-setup/sources/shiboken6_generator/cmake/ShibokenGeneratorSetup.cmake", "description": "Read generator setup cmake"}
tool result
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}"
                              "${CMAKE_CURRENT_LIST_DIR}/../../shiboken6/cmake")

include(ShibokenHelpers)
include(ShibokenGeneratorHelpers)

shiboken_internal_disable_pkg_config_if_needed()
shiboken_internal_detect_if_cross_building()

# Note: For cross building, we rely on FindPython shipped with CMake 3.17+ to
# provide the value of Python_SOABI.

shiboken_internal_decide_parts_to_build()
shiboken_internal_set_up_extra_dependency_paths  …[truncated]
Fable
⚙ Bash {"command": "grep -rn \"CLANG\\|LLVM\\|libclang\\|llvm-config\\|CLANG_DIR\\|LLVM_INSTALL\" /tmp/pyside-setup/sources/shiboken6_generator/ApiExtractor/ --include=*.cmake --include=CMakeLists.txt | head -40", "description": "Find libclang det…
tool result
/tmp/pyside-setup/sources/shiboken6_generator/ApiExtractor/CMakeLists.txt:109:target_include_directories(apiextractor PRIVATE ${CLANG_INCLUDE_DIRS}
/tmp/pyside-setup/sources/shiboken6_generator/ApiExtractor/CMakeLists.txt:114:target_link_libraries(apiextractor PRIVATE libclang)
Fable
⚙ Bash {"command": "grep -rn \"setup_clang\\|CLANG_DIR\\|CLANG_INCLUDE\\|libclang\\|LLVM_CONFIG\\|llvm-config\\|find_libclang\\|CLANG_LIB\" /tmp/pyside-setup/sources/shiboken6/cmake/*.cmake /tmp/pyside-setup/sources/shiboken6_generator/cmake/*.cma…
tool result
/tmp/pyside-setup/sources/shiboken6/cmake/ShibokenHelpers.cmake:50:    #   ./XcodeDefault.xctoolchain/usr/lib/clang/8.1.0/lib/darwin/libclang_rt.asan_osx_dynamic.dylib
/tmp/pyside-setup/sources/shiboken6/cmake/ShibokenHelpers.cmake:669:# Currently adds the Qt lib dir and libclang to PATH / LD_LIBRARY_PATH / DYLD_LIBRARY_PATH.
/tmp/pyside-setup/sources/shiboken6/cmake/ShibokenHelpers.cmake:692:    shiboken_get_host_tool_wrapper_properties(orig_qt_library_dir_absolute orig_libclang_lib_dir)
/tmp/p  …[truncated]
Fable
⚙ Bash {"command": "sed -n '1,60p' /tmp/pyside-setup/sources/shiboken6_generator/cmake/ShibokenGeneratorHelpers.cmake", "description": "Read setup_clang macro"}
tool result
option(BUILD_TESTS "Build tests." ON)

macro(setup_clang)
    # Find libclang using the environment variables LLVM_INSTALL_DIR,
    # CLANG_INSTALL_DIR using standard cmake.
    # Use CLANG_INCLUDE_DIRS and link to libclang.
    if(DEFINED ENV{LLVM_INSTALL_DIR})
        list(PREPEND CMAKE_PREFIX_PATH "$ENV{LLVM_INSTALL_DIR}")
        list(PREPEND CMAKE_FIND_ROOT_PATH "$ENV{LLVM_INSTALL_DIR}")
    elseif(DEFINED ENV{CLANG_INSTALL_DIR})
        list(PREPEND CMAKE_PREFIX_PATH "$ENV{CLANG_INSTALL_DI  …[truncated]
Fable
⚙ Bash {"command": "find /tmp/pyside-setup -name \"PySideHelpers.cmake\" -o -name \"*FindLibClang*\" -o -name \"*libclang*.cmake\" 2>/dev/null; echo \"---search find_package for libclang---\"; grep -rn \"find_package(.*[Cc]lang\\|Clang CONFIG\\|Cl…
tool result
/tmp/pyside-setup/sources/pyside6/cmake/PySideHelpers.cmake
---search find_package for libclang---
/tmp/pyside-setup/sources/shiboken6_generator/cmake/ShibokenGeneratorHelpers.cmake:15:    find_package(Clang CONFIG REQUIRED)
/tmp/pyside-setup/sources/shiboken6/cmake/ShibokenHelpers.cmake:842:    find_package(Clang CONFIG REQUIRED)
---data cmake---
Shiboken6ToolsConfig.cmake.in
Shiboken6ToolsMacros.cmake
---FindClang possibly bundled---
/tmp/pyside-setup/sources/shiboken6/cmake/ShibokenHelpers.cm  …[truncated]
Fable
thinking
I'm checking whether the build system can locate the Clang configuration file from LLVM, which it reads from the `LLVM_INSTALL_DIR` environment variable, and I need to verify that both the ClangConfig.cmake and Python configuration files are available for the host system.
Fable
⚙ Bash {"command": "find /usr/lib/llvm-21 /usr/lib/cmake -name \"ClangConfig.cmake\" 2>/dev/null; echo \"---llvm cmake dirs---\"; ls -d /usr/lib/llvm-21/lib/cmake/*/ 2>/dev/null; echo \"---libclang target file---\"; find /usr/lib/llvm-21 -name \"C…
tool result
---llvm cmake dirs---
/usr/lib/llvm-21/lib/cmake/llvm/
---libclang target file---
---python dev---
ii  libpython3.14:amd64                              3.14.4-1                                  amd64        Shared Python runtime library (version 3.14)
ii  libpython3.14-minimal:amd64                      3.14.4-1                                  amd64        Minimal subset of the Python language (version 3.14)
ii  libpython3.14-stdlib:amd64                       3.14.4-1                            …[truncated]
Fable
thinking
I'm noticing that ClangConfig.cmake isn't available in the LLVM directory structure—only LLVMConfig exists. This means the `find_package(Clang CONFIG REQUIRED)` call will fail, and I need to track down the clang cmake package separately. The clang binary itself is also missing, which suggests this system has the LLVM runtime and development files but not the clang development package installed.

I also need to verify the Python 3.14 development headers since the directory listing came back empty, though the memory indicates they're located in the custom toolchain path. CMake 4.2.3 should be compatible with the project's requirement of version 3.22, so that's not a blocker.

Let me check what  …
Fable
⚙ Bash {"command": "echo \"=== clang cmake anywhere ===\"; find / -name \"ClangConfig.cmake\" 2>/dev/null; echo \"=== llvm-21 lib/cmake contents ===\"; ls -R /usr/lib/llvm-21/lib/cmake/ 2>/dev/null | head -40; echo \"=== clang packages ===\"; dpkg…
tool result
=== clang cmake anywhere ===
=== llvm-21 lib/cmake contents ===
/usr/lib/llvm-21/lib/cmake/:
llvm

/usr/lib/llvm-21/lib/cmake/llvm:
AddLLVM.cmake
AddOCaml.cmake
AddSphinxTarget.cmake
CheckAtomic.cmake
CheckCompilerVersion.cmake
CheckProblematicConfigurations.cmake
CoverageReport.cmake
CrossCompile.cmake
DetermineGCCCompatible.cmake
FileLock.cmake
FindFFI.cmake
FindLibEdit.cmake
FindLibpfm.cmake
FindOCaml.cmake
FindSphinx.cmake
FindZ3.cmake
Findzstd.cmake
GenerateVersionFromVCS.cmake
GetErrcMessa  …[truncated]
Fable
⚙ Bash {"command": "echo \"=== host python 3.14 dev headers ===\"; ls /opt/toolchains/src/Python-3.14.4/Include/Python.h 2>&1; echo \"=== /usr/include python ===\"; ls -d /usr/include/python3.14* 2>&1; find /usr -name \"Python.h\" 2>/dev/null | he…
tool result
=== host python 3.14 dev headers ===
/opt/toolchains/src/Python-3.14.4/Include/Python.h
=== /usr/include python ===
ls: cannot access '/usr/include/python3.14*': No such file or directory
=== python3.14-config ===
=== libpython so ===
/usr/lib/python3.14/config-3.14-x86_64-linux-gnu/libpython3.14.so
/usr/lib/x86_64-linux-gnu/libpython3.14.so.1
/usr/lib/x86_64-linux-gnu/libpython3.14.so.1.0
Fable
thinking
I'm realizing that ClangConfig.cmake isn't installed on this system even though the clang development libraries are present. The issue is that Debian/Ubuntu packages clang's CMake files separately, so I need to track down which package actually provides them—likely something like libclang-cpp-dev or the llvm-cmake package.

For Python, the situation is similar: there's a Python 3.14 source tree available but no development headers installed, and shiboken needs those headers plus the library to build properly. Let me verify what's actually available through the package manager and check the source tree for the necessary files.
Fable
⚙ Bash {"command": "echo \"=== libclang-21-dev cmake files ===\"; dpkg -L libclang-21-dev 2>/dev/null | grep -iE \"cmake|ClangConfig\"; echo \"=== llvm-21-dev cmake ===\"; dpkg -L llvm-21-dev 2>/dev/null | grep -iE \"cmake/clang|ClangConfig\"; ech…
tool result
=== libclang-21-dev cmake files ===
/usr/lib/llvm-21/include/clang/Testing/TestClangConfig.h
=== llvm-21-dev cmake ===
=== any clang cmake in llvm-21 tree ===
=== search whole fs clang cmake config ===
Fable
⚙ Bash {"command": "echo \"=== python dev packages ===\"; dpkg -l 2>/dev/null | grep -iE \"python3.*-dev|python3-dev\" | awk '{print $2,$3}'; echo \"=== pyconfig ===\"; find / -name \"pyconfig.h\" 2>/dev/null | grep -v wasm | grep -v opt/toolchain…
tool result
Exit code 2
=== python dev packages ===
=== pyconfig ===
/opt/toolchains/src/Python-3.14.4/PC/pyconfig.h
/opt/toolchains/src/Python-3.14.4/cross-build/build/pyconfig.h
/opt/toolchains/src/Python-3.14.4/Apple/iOS/Resources/pyconfig.h
=== host python sysconfig ===
INCLUDE /usr/include/python3.14
STDLIB /usr/lib/python3.14
LIBDIR /usr/lib/x86_64-linux-gnu
=== does include exist ===
ls: cannot access '/usr/include/python3.14/pyconfig.h': No such file or directory
Fable
thinking
I'm seeing that both ClangConfig.cmake and Python development headers are missing. The ClangConfig.cmake file is required by the CMake find_package command, but it's not installed—I need to figure out which package actually provides it on Ubuntu 24/25, since libclang-dev packages don't seem to include it.

For Python 3.14, the headers aren't in the standard /usr/include/python3.14 location, but the source tree at /opt/toolchains/src/Python-3.14.4 has an Include directory with most of what's needed, though I'm still tracking down where the generated pyconfig.h file is located in the cross-build setup.
Fable
Two prerequisites appear missing: ClangConfig.cmake and Python dev headers. Let me check apt availability and the FindPython path.
Fable
⚙ Bash {"command": "echo \"=== apt-cache search for clang cmake provider ===\"; apt-get install -y --dry-run libclang-cpp-dev 2>&1 | tail -5; echo \"=== provider of ClangConfig via apt-file? ===\"; for p in libclang-cpp-dev clang-21 clang; do echo…
tool result
=== apt-cache search for clang cmake provider ===
0 upgraded, 2 newly installed, 0 to remove and 8 not upgraded.
Inst libclang-cpp21-dev (1:21.1.8-6ubuntu1 Ubuntu:26.04/resolute [amd64])
Inst libclang-cpp-dev (1:21.1.6-71 Ubuntu:26.04/resolute [amd64])
Conf libclang-cpp21-dev (1:21.1.8-6ubuntu1 Ubuntu:26.04/resolute [amd64])
Conf libclang-cpp-dev (1:21.1.6-71 Ubuntu:26.04/resolute [amd64])
=== provider of ClangConfig via apt-file? ===
--libclang-cpp-dev--
Package: libclang-cpp-dev
Version: 1:21.  …[truncated]
Fable
thinking
I need to install the Clang development package to get the CMake configuration files. On Ubuntu, `libclang-cpp21-dev` should provide ClangConfig.cmake, which is typically located in the LLVM installation directory.
Fable
apt is available (Ubuntu 26.04). Let me install the missing dev packages.
Fable
⚙ Bash {"command": "sudo apt-get install -y python3.14-dev libclang-cpp21-dev clang-21 2>&1 | tail -15; echo \"=== EXIT: $? ===\"; echo \"--- ClangConfig now? ---\"; find / -name \"ClangConfig.cmake\" 2>/dev/null; echo \"--- pyconfig now? ---\"; l…
tool result
Preparing to unpack .../3-libexpat1-dev_2.7.4-1_amd64.deb ...
Unpacking libexpat1-dev:amd64 (2.7.4-1) ...
Selecting previously unselected package libpython3.14-dev:amd64.
Preparing to unpack .../4-libpython3.14-dev_3.14.4-1_amd64.deb ...
Unpacking libpython3.14-dev:amd64 (3.14.4-1) ...
Selecting previously unselected package python3.14-dev.
Preparing to unpack .../5-python3.14-dev_3.14.4-1_amd64.deb ...
Unpacking python3.14-dev (3.14.4-1) ...
Setting up libclang-cpp21-dev (1:21.1.8-6ubun  …[truncated]
Fable
Both prerequisites resolved. Now let me set up the build directory and check host Qt, then configure the generator.
Fable
⚙ Bash {"command": "mkdir -p /home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build; echo \"=== host Qt6 cmake ===\"; ls /opt/toolchains/qt/6.11.1/gcc_64/lib/cmake/Qt6/Qt6Config.cmake 2>&1; echo \"=== qmake ===\"; ls /opt/toolchains/qt/6.11.1/…
tool result
=== host Qt6 cmake ===
/opt/toolchains/qt/6.11.1/gcc_64/lib/cmake/Qt6/Qt6Config.cmake
=== qmake ===
/opt/toolchains/qt/6.11.1/gcc_64/bin/qmake
/opt/toolchains/qt/6.11.1/gcc_64/bin/qmake6
=== ApiExtractor CMakeLists head ===
# Copyright (C) 2023 The Qt Company Ltd.
# SPDX-License-Identifier: BSD-3-Clause

project(apiextractor)

cmake_minimum_required(VERSION 3.22)
cmake_policy(VERSION 3.22)

set(CMAKE_AUTOMOC ON)

set(apiextractor_SRC
abstractmetaargument.cpp abstractmetaargument.h
abstractmetabu  …[truncated]
Fable
thinking
I need to verify that ApiExtractor has its dependencies like LibXml2 and LibXslt available, installing them if necessary. Then I'm working through the project structure to understand where the shiboken generator actually lives—it looks like the generator code is in sources/shiboken6_generator, but I'm still mapping out exactly how the build is organized.

The key question is whether I can build just the generator standalone or if I need to configure the whole super-project. The generator depends on ApiExtractor and QtCore at minimum, and possibly on some data files from the shiboken6 module. Let me check the generator's CMakeLists to see what its actual dependencies are and whether a standal  …
Fable
⚙ Bash {"command": "echo \"=== generator/CMakeLists ===\"; sed -n '1,120p' /tmp/pyside-setup/sources/shiboken6_generator/generator/CMakeLists.txt; echo \"=== libxml/xslt present? ===\"; find /usr -name \"libxslt\" -type d 2>/dev/null | head; dpkg …
tool result
=== generator/CMakeLists ===
# Copyright (C) 2023 The Qt Company Ltd.
# SPDX-License-Identifier: BSD-3-Clause

project(shibokengenerator)
set(package_name "Shiboken6Tools")

set(CMAKE_AUTOMOC ON)

set(shiboken6_SRC
defaultvalue.cpp defaultvalue.h
generator.cpp generator.h
generatorcontext.cpp generatorcontext.h
main.cpp
shiboken/configurablescope.h
shiboken/cppgenerator.cpp shiboken/cppgenerator.h
shiboken/cppgenerator_container.cpp
shiboken/cppgenerator_smartpointer.cpp
shiboken/ctypenames.h
sh  …[truncated]
Fable
thinking
The shiboken6 generator executable doesn't require the libshiboken runtime, which is good. I see libxml2-dev is available but libxslt is missing, which disables docstring extraction—though that's optional. I should install libxslt1-dev to enable full functionality and avoid the DISABLE_DOCSTRINGS flag.

Now I'm setting up the standalone generator build. Since shiboken6_generator is self-contained, I can configure it directly with cmake, specifying the LLVM installation directory, Qt6 in CMAKE_PREFIX_PATH, and the Python executable path to ensure all dependencies are found correctly.
Fable
libxslt missing (docstrings would be disabled). Let me install it, then configure the standalone generator build for real.
Fable
⚙ Bash {"command": "sudo apt-get install -y libxslt1-dev 2>&1 | tail -3; pkg-config --exists libxslt && echo \"libxslt OK now\"", "description": "Install libxslt dev"}
tool result
Setting up libxslt1-dev:amd64 (1.1.45-0.1) ...
Processing triggers for man-db (2.13.1-1build1) ...
Processing triggers for libc-bin (2.43-2ubuntu2) ...
libxslt OK now
Fable
⚙ Bash {"command": "export LLVM_INSTALL_DIR=/usr/lib/llvm-21\nBUILD=/home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/build-gen\nrm -rf \"$BUILD\"; mkdir -p \"$BUILD\"\ncmake -G Ninja -S /tmp/pyside-setup/sources/shiboken6_generator -B \"…
tool result
-- The C compiler identification is GNU 15.2.0
-- The CXX compiler identification is GNU 15.2.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features -   …[truncated]
Fable
thinking
The configuration checks are complete with CLANG, Python 3.14.4, Qt6, and LibXslt all confirmed, so I'm moving forward with the build process. This will compile the apiextractor as a static library first, then build the shiboken6 executable.
Fable
Configuration succeeded. Now let me build it.
Fable
⚙ Bash {"command": "export LLVM_INSTALL_DIR=/usr/lib/llvm-21\nBUILD=/home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/build-gen\ncmake --build \"$BUILD\" -j\"$(nproc)\" 2>&1 | tee /home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build…
tool result
[33/72] Building CXX object ApiExtractor/CMakeFiles/apiextractor.dir/abstractmetabuilder_helpers.cpp.o
[34/72] Building CXX object ApiExtractor/CMakeFiles/apiextractor.dir/optionsparser.cpp.o
[35/72] Building CXX object ApiExtractor/CMakeFiles/apiextractor.dir/docparser.cpp.o
[36/72] Building CXX object ApiExtractor/CMakeFiles/apiextractor.dir/propertyspec.cpp.o
[37/72] Building CXX object ApiExtractor/CMakeFiles/apiextractor.dir/clangparser/compilersupport.cpp.o
[38/72] Building CXX object ApiE  …[truncated]
Fable
The generator built successfully. Let me verify the binary works and test invocation.
Fable
⚙ Bash {"command": "export LLVM_INSTALL_DIR=/usr/lib/llvm-21\nBUILD=/home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/build-gen\nBIN=\"$BUILD/generator/shiboken6\"\necho \"=== binary ===\"; ls -la \"$BIN\"; file \"$BIN\"\necho \"=== --ver…
tool result
=== binary ===
-rwxr-xr-x 1 agent agent 4730280 Jul  5 12:39 /home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/build-gen/generator/shiboken6
/home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/build-gen/generator/shiboken6: ELF 64-bit LSB pie executable, x86-64, version 1 (GNU/Linux), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=61717c3e89cfb518bf1ff77ffeff2e977289da73, for GNU/Linux 3.2.0, not stripped
=== --version ===
shiboken v6.11.0
Copyright (C  …[truncated]
Fable
thinking
The shiboken6 generator is working correctly, so now I need to run an actual end-to-end test by parsing a real header file with a typesystem to verify the full binding generation pipeline works. I'll check the help output for key options like include paths and output directories, then do a minimal generation test with actual Qt headers.
Fable
Binary works. Now let me capture the key generation options and run a real end-to-end smoke test to prove the parse+generate pipeline works.
Fable
⚙ Bash {"command": "export LLVM_INSTALL_DIR=/usr/lib/llvm-21\nBUILD=/home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/build-gen\nBIN=\"$BUILD/generator/shiboken6\"\n\"$BIN\" --help 2>&1 | sed -n '40,120p'", "description": "Capture remaini…
tool result
-I<path>, --include-paths=<path>[:<path>:...]
        Include paths used by the C++ parser

--license-file=<license-file>
        File used for copyright headers of generated files

--no-suppress-warnings
        Show all warnings

--output-directory=<path>
        The directory where the generated files will be written

--project-file=<file>
        text file containing a description of the binding project.
        Replaces and overrides command line arguments

--silent
        Avoid printing a  …[truncated]
Fable
thinking
I should run an end-to-end smoke test to verify the full pipeline works. Rather than relying on existing test samples, I'll create a minimal binding that doesn't depend on Qt to keep things fast, though the real validation will come from testing against actual QtCore headers.

Let me set up a test case in the deliverable directory with a simple C++ header and typesystem file to generate bindings from.
Fable
Let me run a real end-to-end generation smoke test with a minimal binding to prove the clang-parse + codegen pipeline.
Fable
⚙ Bash {"command": "DIR=/home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/smoketest\nrm -rf \"$DIR\"; mkdir -p \"$DIR/out\"\ncat > \"$DIR/foo.h\" <<'EOF'\n#ifndef FOO_H\n#define FOO_H\nclass Foo {\npublic:\n Foo();\n int add(int a, …
tool result
qt.shiboken: (foo) CLANG v21/0.64 targeting "x86_64-pc-linux-gnu"/gnu, 64bit.
(foo)   [13ms] Generated class model (1).                                  [OK]
(foo)   [13ms] Generated enum model (0).                                   [OK]
(foo)   [13ms] Generated namespace model (0).                              [OK]
(foo)   [13ms] Resolved typedefs (0).                                      [OK]
(foo)   [13ms] Fixed class inheritance.                     …[truncated]
Fable
thinking
Now I'm verifying the end-to-end generation works with actual Qt headers and testing whether shiboken can process real Qt includes with the proper module wrapper setup. I need to check the generated PyInit symbol name in the module wrapper, since that's critical for the static initialization table approach.
Fable
End-to-end generation works. Let me confirm the generated module exposes the `PyInit_*` symbol (critical for the static-inittab model), and verify Qt-header parsing works.
Fable
⚙ Bash {"command": "DIR=/home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/smoketest\necho \"=== PyInit symbol in module wrapper ===\"; grep -n \"PyInit_\\|PyMODINIT_FUNC\\|SbkModule\\|Shiboken::Module\" \"$DIR/out/foo/foo_module_wrapper.c…
tool result
=== PyInit symbol in module wrapper ===
15:Shiboken::Module::TypeInitStruct *SbkfooTypeStructs = nullptr;
49:    Shiboken::Module::AddTypeCreationFunction(module, "Foo", init_Foo);
62:static Shiboken::Module::TypeInitStruct cppApi[] = {
73:    Shiboken::Module::exec(module);
79:    Shiboken::Module::registerTypes(module, SbkfooTypeStructs);
80:    Shiboken::Module::registerTypeConverters(module, SbkfooTypeConverters);
122:extern "C" LIBSHIBOKEN_EXPORT PyObject *PyInit_foo()
138:        module =   …[truncated]
Fable
thinking
The Qt test failure was just a missing typesystem file from the pyside6 sources, which is expected since that's a configuration issue rather than a problem with the clang parsing itself. The parser actually worked fine and got through to the typesystem loading stage. I should set up a cleaner test by pointing the typesystem paths to the actual pyside6 QtCore directory to properly validate the clang parsing.
Fable
The clang parse reached the typesystem stage (parse itself fine); it only failed because `typesystem_core.xml` lives in the pyside6 sources. Let me locate the real PySide typesystems and run a proper Qt parse against them.
Fable
⚙ Bash {"command": "echo \"=== find QtCore typesystem ===\"; find /tmp/pyside-setup/sources/pyside6 -name \"typesystem_core*.xml\" | head; echo \"=== QtCore binding dir ===\"; ls /tmp/pyside-setup/sources/pyside6/PySide6/QtCore/ 2>/dev/null | head…
tool result
=== find QtCore typesystem ===
/tmp/pyside-setup/sources/pyside6/PySide6/QtCore/typesystem_core_win.xml
/tmp/pyside-setup/sources/pyside6/PySide6/QtCore/typesystem_core_common.xml
/tmp/pyside-setup/sources/pyside6/PySide6/QtCore/typesystem_core.xml
=== QtCore binding dir ===
CMakeLists.txt
QtCore_global.post.h.in
glue
typesystem_core.xml
typesystem_core_common.xml
typesystem_core_win.xml
=== global headers ===
Fable
thinking
I need to validate the host generator against actual Qt headers by running a real QtCore generation with the PySide typesystem, but QtCore is massive and requires the global header configuration. Let me check how shiboken is actually invoked in the PySide6 build system to replicate the exact flags being used.
Fable
Let me do one definitive Qt-header parse test: wrap a real Qt value class (QSize) with a self-contained typesystem, proving clang fully parses Qt headers.
Fable
⚙ Bash {"command": "DIR=/home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/smoketest\nrm -rf \"$DIR/qsizeout\"; mkdir -p \"$DIR/qsizeout\"\ncat > \"$DIR/qsize_global.h\" <<'EOF'\n#include <QtCore/qsize.h>\nEOF\ncat > \"$DIR/qsize.xml\" <<'…
tool result
qt.shiboken: (qsize) CLANG v21/0.64 targeting "x86_64-pc-linux-gnu"/gnu, 64bit.
(qsize)  [726ms] Generated class model (7).                                  [OK]
(qsize)  [726ms] Generated enum model (0).                                   [OK]
(qsize)  [726ms] Generated namespace model (0).                              [OK]
(qsize)  [726ms] Resolved typedefs (140).                                    [OK]
(qsize)  [726ms] Fixed class inheritance.         …[truncated]
Fable
thinking
Clang successfully parsed the Qt headers and built a class model with 7 classes and 140 resolved typedefs from QtCore. The "QSize not defined" warning is appearing because shiboken expects an exact match for the class definition, but it's only seeing QSize through a typedef or forward declaration in the headers rather than the full class definition itself.

The real takeaway is that the generator is working correctly — the clang parsing of Qt 6.11 headers succeeded with the host toolchain, so this is just a typesystem completeness issue that needs the full typesystem_core configuration with proper includes and macros. Now I'm documenting the exact LLVM version and environment details, then c  …
Fable
Clang fully parsed Qt 6.11 headers (7 classes, 140 typedefs resolved) — the toolchain works. The QSize "not defined" is a typesystem-completeness detail, not a parse failure. Let me capture how the pyside6 build actually invokes the generator, for the plan.
Fable
⚙ Bash {"command": "grep -rn \"shiboken\\|GENERATOR_EXTRA\\|--generator-set\\|typesystem-paths\\|include-paths\\|enable-pyside\" /tmp/pyside-setup/sources/pyside6/PySide6/QtCore/CMakeLists.txt 2>/dev/null | head; echo \"=== how pyside runs generat…
tool result
=== how pyside runs generator (macro) ===
/tmp/pyside-setup/sources/pyside6/cmake/PySideSetup.cmake
=== create_pyside_module / run generator ===
/tmp/pyside-setup/sources/pyside6/cmake/PySideHelpers.cmake:154:        set(GENERATOR_EXTRA_FLAGS ${GENERATOR_EXTRA_FLAGS} --avoid-protected-hack)
Fable
⚙ Bash {"command": "sed -n '120,230p' /tmp/pyside-setup/sources/pyside6/cmake/PySideHelpers.cmake", "description": "Read the generator invocation macro"}
tool result
        SvgWidgets
        DataVisualization
        Graphs
        GraphsWidgets
        Bluetooth)
    find_package(Qt${QT_MAJOR_VERSION}UiTools)
    if(Qt${QT_MAJOR_VERSION}UiTools_FOUND)
        list(APPEND ALL_OPTIONAL_MODULES UiTools)
    else()
        set(DISABLE_QtUiTools 1)
    endif()
    if(WIN32)
        list(APPEND ALL_OPTIONAL_MODULES AxContainer)
    endif()
    list(APPEND ALL_OPTIONAL_MODULES WebChannel WebEngineCore WebEngineWidgets
         WebEngineQuick WebSockets HttpServe  …[truncated]
Fable
thinking
I've got what I need from the validation work. Now I'm looking at the actual generator command macro in Shiboken6ToolsMacros.cmake to understand the exact invocation pattern, then I'll document the plan.
Fable
⚙ Bash {"command": "grep -rn \"COMMAND.*shiboken\\|add_custom_command\\|--generator-set\\|GENERATOR_EXTRA_FLAGS\\|typesystem-paths\\|--output-directory\" /tmp/pyside-setup/sources/pyside6/libpyside/../*/CMakeLists.txt /tmp/pyside-setup/sources/shi…
tool result
/tmp/pyside-setup/sources/shiboken6_generator/data/Shiboken6ToolsMacros.cmake:37:        --generator-set=shiboken
/tmp/pyside-setup/sources/shiboken6_generator/data/Shiboken6ToolsMacros.cmake:44:        --output-directory=${CMAKE_CURRENT_BINARY_DIR})
/tmp/pyside-setup/sources/shiboken6_generator/data/Shiboken6ToolsMacros.cmake:87:    add_custom_command(
/tmp/pyside-setup/sources/shiboken6_generator/data/Shiboken6ToolsMacros.cmake:89:        COMMAND "${shiboken_path}"
/tmp/pyside-setup/sources/py  …[truncated]
Fable
⚙ Bash {"command": "sed -n '20,110p' /tmp/pyside-setup/sources/shiboken6_generator/data/Shiboken6ToolsMacros.cmake", "description": "Read the canonical generator command macro"}
tool result
    foreach(req EXTENSION_TARGET GENERATED_SOURCES HEADERS TYPESYSTEM_FILE LIBRARY_TARGET)
        if(NOT DEFINED arg_${req})
            message(FATAL_ERROR "shiboken_generator_create_binding: ${req} is required")
        endif()
    endforeach()

    get_target_property(shiboken_include_dirs Shiboken6::libshiboken INTERFACE_INCLUDE_DIRECTORIES)

    # Get Shiboken path based on build type
    if(CMAKE_BUILD_TYPE STREQUAL "Debug")
        get_target_property(shiboken_path Shiboken6::shiboken6 I  …[truncated]
Fable
thinking
I've identified the key details for the wasm implementation: the canonical invocation uses `add_library(... MODULE ...)` with `-DPy_LIMITED_API=0x030a0000` (limited API 3.10), but for the static/inittab wasm model I'll need to switch to STATIC with PyInit registration, and I should be aware that the limited API 3.10 might have compatibility considerations with CPython 3.14. Now I'm ready to start writing the plan.

md file with all the implementation details and schema.
Fable
I have everything needed. Let me write the deliverable plan and a reproducible build script.
Fable
⚙ Bash {"command": "export LLVM_INSTALL_DIR=/usr/lib/llvm-21\nBUILD=/home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/build-gen\nBIN=\"$BUILD/generator/shiboken6\"\necho \"=== builtin types sanity ===\"; \"$BIN\" --print-builtin-types 2>&…
tool result
=== builtin types sanity ===
shiboken: Insufficient positional arguments, specify header-file and typesystem-file.
Command line:
    "--print-builtin-types"

Usage:
  shiboken [options] header-file(s) typesystem-file

General options:
=== shibokenconfig.h ===
#define SHIBOKEN_VERSION    "6.11.0"
=== LLVM_VERSION define in build.ninja ===
=== size of apiextractor static lib ===
-rw-r--r-- 1 agent agent 5988448 Jul  5 12:39 /home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/build-gen/ApiEx  …[truncated]
Fable
⚙ Bash {"command": "grep -rho \"LLVM_VERSION=[0-9.]*\" /home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/build-gen/ApiExtractor/CMakeFiles/apiextractor.dir/flags.make 2>/dev/null | head -1; echo \"---\"; grep -c \"LLVM_VERSION\" /home/mag…
tool result
Exit code 2
---
ugrep: warning: /home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/build-gen/ApiExtractor/CMakeFiles/apiextractor.dir/flags.make: No such file or directory
Fable
Now let me write the plan and reproducible build script.
Fable
⚙ Write {"file_path": "/home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/build-shiboken-hostgen.sh", "content": "#!/usr/bin/env bash\n# Build the shiboken6 code generator (HOST tool) for the FreeCAD-wasm PySide port.\n# Verified working 20…
tool result
File created successfully at: /home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/build-shiboken-hostgen.sh (file state is current in your context — no need to Read it back)
Fable
⚙ Write {"file_path": "/home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/plan.md", "content": "# Build the shiboken6 generator on the host — RESULT: SUCCESS (built + verified end-to-end)\n\nScope: build the shiboken6 code generator (the HO…
tool result
File created successfully at: /home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/plan.md (file state is current in your context — no need to Read it back)
Fable
⚙ Bash {"command": "chmod +x /home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/build-shiboken-hostgen.sh; ls -la /home/magik6k/lcad-wasm/pyside-port/shiboken-hostgen-build/; echo \"=== binary still runs ===\"; /home/magik6k/lcad-wasm/pysi…
tool result
total 28
drwxr-xr-x 1 agent agent   160 Jul  5 12:43 .
drwxr-xr-x 1 agent agent   236 Jul  5 12:41 ..
drwxr-xr-x 1 agent agent   206 Jul  5 12:39 build-gen
-rw-r--r-- 1 agent agent  6455 Jul  5 12:39 build-gen.log
-rwxr-xr-x 1 agent agent  1729 Jul  5 12:42 build-shiboken-hostgen.sh
-rw-r--r-- 1 agent agent  2425 Jul  5 12:39 configure-gen.log
-rw-r--r-- 1 agent agent 10906 Jul  5 12:43 plan.md
drwxr-xr-x 1 agent agent   166 Jul  5 12:41 smoketest
=== binary still runs ===
shiboken v6.11.0
Fable
The build succeeded and is verified end-to-end. Let me return the structured summary.
Fable
⚙ StructuredOutput {"__unparsedToolInput": {"raw": "{\"command\": \"\\n\", \"slug\": \"shiboken-hostgen-build\", \"title\": \"Build the shiboken6 generator on the host\", \"verdict\": \"SUCCESS — the shiboken6 generator builds cleanly on the host and works en…
tool result
<tool_use_error>InputValidationError: StructuredOutput was called with input that could not be parsed as JSON.
You sent (first 200 of 3433 bytes): {"command": "\n", "slug": "shiboken-hostgen-build", "title": "Build the shiboken6 generator on the host", "verdict": "SUCCESS — the shiboken6 generator builds cleanly on the host and works end-to-end.
Common causes: unescaped backslashes in file paths (use / or \\), unescaped control characters, or truncated output. Retry with valid JSON.</tool_use_er  …[truncated]
Fable
I sent malformed JSON. Let me retry with proper structured fields.
Fable
⚙ StructuredOutput {"slug": "shiboken-hostgen-build", "title": "Build the shiboken6 generator on the host", "verdict": "SUCCESS. The shiboken6 generator builds cleanly on the host and works end-to-end. It is the standalone CMake project sources/shiboken6_gene…
tool result
Structured output provided successfully