subagent transcript

session 17f09f89 · workflow wf_4e894f41
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delegated task
You are working on the FreeCAD -> WebAssembly port. Ground EVERYTHING in the real code; do not guess. - Source tree: /home/magik6k/lcad-wasm/freecad-p
▸ Magik
You are working on the FreeCAD -> WebAssembly port. Ground EVERYTHING in the real code; do not guess. - Source tree: /home/magik6k/lcad-wasm/freecad-port/FreeCAD (git branch wasm-port). CMake build dir (out-of-source, already configured): /opt/toolchains/src/freecad-gui-build — read /opt/toolchains/src/freecad-gui-build/CMakeCache.txt for BUILD_* flags and dep paths. Build binary: bin/FreeCAD.wasm (~180 MB). - Toolchain: emscripten, ASYNCIFY + JS exceptions (-fexceptions), SINGLE-THREADED (no pthreads). Static CPython 3.14 + static Qt 6.11 (wasm) + static OCCT + static Coin3D. Everything is statically linked; there is NO dlopen — Python C-extension modules are registered statically via PyImport_AppendInittab in the generated file src/Main/WasmInittab.cpp / WasmInittabGui.cpp (see also freecadWasmRegisterInittab in src/Main/MainGui.cpp). - CRITICAL wasm constraints you MUST check for and design around: (1) THREADING HANGS: any std::thread ctor / std::async(default or async policy) / QThreadPool / QtConcurrent / QThread worker HANGS or throws (no pthreads). Fix pattern: force synchronous/deferred on __EMSCRIPTEN__ (e.g. std::launch::deferred), or #ifndef FC_OS_WASM guard the worker and run inline. Example already in-tree: Mod/Sketcher/App/planegcs/GCS.cpp forced std::launch::deferred; App/Application.cpp guards _recomputeThread with #ifndef FC_OS_WASM; Gui/ProgressBar.cpp skips qApp->processEvents() on __EMSCRIPTEN__. (2) MODAL DIALOGS / NESTED EVENT LOOPS: QDialog::exec()/QMessageBox::exec()/QEventLoop::exec() may deadlock under asyncify when driven from outside the main loop. Task-panel (docked, non-modal) dialogs are preferred. (3) Reentrant ccalls from JS during asyncify suspend corrupt state — a QTimer command-pump (/fc-cmd.py) exists for JS->Python. QtWebEngine has NO wasm port (Web workbench / in-app help / real Start page can't use it). (4) Wasm guards used in-tree: __EMSCRIPTEN__ (compiler-provided) and FC_OS_WASM (FreeCAD-defined) — both are defined on wasm. - Built modules today: Part, Sketcher, Material, Start (+ kernel). Everything else is OFF (see BUILD_* in CMakeCache). - PySide/shiboken: FREECAD_USE_PYSIDE=OFF, FREECAD_USE_SHIBOKEN=OFF, PySide6_DIR/Shiboken6_DIR NOTFOUND. Python 'PySide'/'shiboken6' import fails at runtime ("Cannot load shiboken6"). Many workbenches (Draft, BIM, most task dialogs) are Python+PySide and cannot function without it. DELIVERABLES — do BOTH: 1) Write a thorough, concrete, ready-to-apply plan to /home/magik6k/lcad-wasm/porting/<SLUG>/plan.md — include: exact CMake flags/edits, exact source edits (file + before/after or unified-diff snippets precise enough to apply), any NEW files (full contents), external-dependency build recipes (how to build each dep for this emscripten/asyncify toolchain), a threading-hazard list (grep the real files, give file:line + the exact construct + the exact fix), a modal-dialog-hazard list, the PyImport_AppendInittab lines to add, an ordered step list, and an effort/risk estimate. Put any patch files or new-file contents as separate files in that dir too. 2) Return the structured summary (the schema). Keep summary fields concise; the depth goes in plan.md. Your returned text IS the structured object. Be exhaustive and correct — token cost is not a concern. Verify claims against the actual files (use grep/read). If a dependency has no known wasm port, say so plainly and estimate the porting effort. === YOUR SCOPE: TechDraw (+ Qt SVG / libarea / QtConcurrent) (slug: techdraw) === TechDraw is OFF. Deps: Qt SVG (does the wasm Qt build include QtSvg?), libarea, and it heavily uses QtConcurrent (threading hazard!). Grep Mod/TechDraw for QtConcurrent/std::thread and list every hazard with a wasm fix. cmake flags, modal audit, PySide dependency (task dialogs). Write your full plan + any patch/new-file contents under /home/magik6k/lcad-wasm/porting/techdraw/ (create the dir; plan.md is required). Then return the structured summary with deliverableFile=/home/magik6k/lcad-wasm/porting/techdraw/plan.md.
Fable
thinking
I'm starting to look into the TechDraw module and how it's configured in the build system.
Fable
I'll investigate the TechDraw module grounding everything in the real code. Let me start by exploring the structure and build config.
Fable
⚙ Bash {"command": "ls src/Mod/TechDraw && echo \"---APP---\" && ls src/Mod/TechDraw/App | head -50 && echo \"---GUI---\" && ls src/Mod/TechDraw/Gui | head -80", "description": "List TechDraw module structure"}
tool result
App
CMakeLists.txt
CSVdata
ConversionUtilities
Gui
Init.py
InitGui.py
LineGroup
PAT
Patterns
Symbols
TDTest
TechDrawGlobal.h
TechDrawTools
Templates
TestTechDrawApp.py
TestTechDrawGui.py
techdraw.dox
---APP---
AppTechDraw.cpp
AppTechDrawPy.cpp
ArrowPropEnum.cpp
ArrowPropEnum.h
BalloonPropEnum.cpp
BalloonPropEnum.h
CMakeLists.txt
CenterLine.cpp
CenterLine.h
CenterLine.pyi
CenterLinePyImp.cpp
Cosmetic.cpp
Cosmetic.h
CosmeticEdge.pyi
CosmeticEdgePyImp.cpp
CosmeticExtension.cpp
CosmeticExtension.h
C  …[truncated]
Fable
⚙ Bash {"command": "grep -nE \"BUILD_TECHDRAW|BUILD_PART|Qt6Svg|QtSvg|LIBAREA|libarea|USE_PYSIDE|USE_SHIBOKEN\" /opt/toolchains/src/freecad-gui-build/CMakeCache.txt", "description": "Check build flags in CMakeCache"}
tool result
88:BUILD_PART:BOOL=ON
91:BUILD_PART_DESIGN:BOOL=OFF
124:BUILD_TECHDRAW:BOOL=OFF
634:FREECAD_USE_PYSIDE:BOOL=OFF
656:FREECAD_USE_SHIBOKEN:BOOL=OFF
931://The directory containing a CMake configuration file for Qt6SvgWidgets.
932:Qt6SvgWidgets_DIR:PATH=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/lib/cmake/Qt6SvgWidgets
934://The directory containing a CMake configuration file for Qt6Svg.
935:Qt6Svg_DIR:PATH=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/lib/cmake/Qt6Svg
Fable
thinking
Qt6Svg and Qt6SvgWidgets are available in the wasm build, so I should check TechDraw's CMakeLists to understand what dependencies it needs.
Fable
Qt6Svg and Qt6SvgWidgets ARE available in the wasm Qt build. Let me examine dependencies and threading hazards.
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && echo \"===APP CMakeLists===\" && cat App/CMakeLists.txt | head -80", "description": "Read TechDraw App CMakeLists"}
tool result
===APP CMakeLists===
set(TechDrawLIBS
    Measure
    Part
    Spreadsheet
    PartDesign
)

if (BUILD_IMPORT)
    list(APPEND TechDrawLIBS Import)
endif ()

list(APPEND TechDrawLIBS
    ${QtConcurrent_LIBRARIES}
    ${QtCore_LIBRARIES}
    ${QtWidgets_LIBRARIES}
)

generate_from_py(DrawHatch)
generate_from_py(DrawView)
generate_from_py(DrawPage)
generate_from_py(DrawViewPart)
generate_from_py(DrawViewSymbol)
generate_from_py(DrawTemplate)
generate_from_py(DrawParametricTemplate)
generate_from_p  …[truncated]
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && grep -rnE \"QtConcurrent|std::thread|std::async|QThreadPool|QThread|QFuture|QtCore/QtConcurrentRun|run\\(\" --include=*.cpp --include=*.h App Gui | grep -iE \"concurrent|thread|async|qfuture\" | head -60"…
tool result
App/DrawBrokenView.cpp:55:#include <QtConcurrentRun>
App/DrawComplexSection.cpp:81:#include <QFuture>
App/DrawComplexSection.cpp:82:#include <QFutureWatcher>
App/DrawComplexSection.cpp:83:#include <QtConcurrentRun>
App/DrawComplexSection.cpp:263:            QObject::connect(&m_alignWatcher, &QFutureWatcherBase::finished, &m_alignWatcher,
App/DrawComplexSection.cpp:270:        m_alignFuture = QtConcurrent::run(std::move(lambda));
App/DrawComplexSection.h:192:    QFutureWatcher<void> m_alignWatche  …[truncated]
Fable
thinking
QtConcurrent is a major threading concern throughout the codebase, so I need to examine how it's being used across the critical files—DrawViewPart.cpp is the most important since it handles the core view generation with HLR and face finding, but I also need to check DrawViewSection.cpp, DrawViewDetail.cpp, DrawComplexSection.cpp, and DrawBrokenView.cpp to understand the full scope of the threading hazards.
Fable
QtConcurrent is the central threading hazard. Let me read each usage pattern in detail, starting with the core DrawViewPart.
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/App && sed -n '350,470p' DrawViewPart.cpp", "description": "Read DrawViewPart QtConcurrent usage"}
tool result
        std::make_shared<TechDraw::GeometryObject>(getNameInDocument(), this));
    go->setIsoCount(IsoCount.getValue());
    go->isPerspective(Perspective.getValue());
    go->setFocus(Focus.getValue());
    go->usePolygonHLR(CoarseView.getValue());
    go->setScrubCount(ScrubCount.getValue());

    if (CoarseView.getValue()) {
        //the polygon approximation HLR process runs quickly, so doesn't need to be in a
        //separate thread
        go->projectShapeWithPolygonAlgo(shape, viewAxi  …[truncated]
Fable
thinking
The issue is that `DU::isGuiUp()` returns true in the wasm environment, so it skips the synchronous fallback and tries to use `QtConcurrent::run`, which hangs. I need to force the synchronous code path specifically for wasm by detecting that condition and bypassing the concurrent execution.
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/App && sed -n '300,352p' DrawViewPart.cpp && echo \"===execute/partExec callers===\" && grep -n \"buildGeometryObject\\|partExec\\|onHlrFinished\\|onFacesFinished\\|isGuiUp\\|waitingForHlr\\|waitingForFaces\…
tool result
    //we need to keep using the old geometryObject until the new one is fully populated
    m_tempGeometryObject = makeGeometryForShape(shape);
    if (CoarseView.getValue() ||
        !DU::isGuiUp()) {
        onHlrFinished();//poly algo and console mode do not run in separate thread, so we need to invoke
                        //the post hlr processing manually
    }
}

//! prepare the shape for HLR processing by centering, scaling and rotating it
GeometryObjectPtr DrawViewPart::makeGeometryF  …[truncated]
Fable
thinking
I see the synchronous path is already there, guarded by the `!DU::isGuiUp()` check. The cleanest approach for wasm would be to force that synchronous behavior by treating wasm as if the GUI isn't available—either by modifying the condition to include a wasm check, or finding where `DU::isGuiUp()` is defined to handle it there.

Now I'm going through each of the five files to map out where `QtConcurrent::run` is being called and what synchronous fallback pattern each one uses, so I can apply a consistent fix across all of them.
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/App && echo \"===DrawViewSection 460-500===\" && sed -n '460,505p' DrawViewSection.cpp && echo \"===DrawViewDetail 175-220===\" && sed -n '175,220p' DrawViewDetail.cpp", "description": "Read Section and Deta…
tool result
===DrawViewSection 460-500===

    if (baseShape.IsNull()) {
        // should be caught before this
        return;
    }

    m_cuttingTool = makeCuttingTool(m_shapeSize);

    if (!DU::isGuiUp()) {
        // without the gui we will never be informed of completion of the separate thread
        makeSectionCut(baseShape);
        waitingForCut(false);
        onSectionCutFinished();
        return;
    }

    try {
        // note that &m_cutWatcher in the third parameter is not strictly requi  …[truncated]
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/App && echo \"===ComplexSection 240-280===\" && sed -n '240,280p' DrawComplexSection.cpp && echo \"===BrokenView QtConcurrent usage===\" && grep -n \"QtConcurrent\\|QFuture\\|isGuiUp\\|Watcher\\|thread\" Dra…
tool result
===ComplexSection 240-280===
    m_preparedShape = ShapeUtils::scaleShape(m_alignResult, getScale());
    if (!DrawUtil::fpCompare(Rotation.getValue(), 0.0)) {
        m_preparedShape =
            ShapeUtils::rotateShape(m_preparedShape, getProjectionCS(), Rotation.getValue());
    }

    if (debugSection()) {
        BRepTools::Write(m_preparedShape, "DCSprepareShape_preparedShape.brep"); //debug
    }

    return m_preparedShape;
}


void DrawComplexSection::makeSectionCut(const TopoDS_Shape&  …[truncated]
Fable
thinking
I'm noticing a few issues in the codebase. DrawViewDetail.cpp has a bug where the `!DU::isGuiUp()` branch doesn't return, causing it to fall through and start the thread anyway—though for wasm I'll force the synchronous path with an explicit return. DrawBrokenView.cpp has an unused QtConcurrent include that's just leftover. And DrawComplexSection::makeSectionCut always uses QtConcurrent::run without any fallback for when the GUI isn't available.

The cleanest fix is to add a wasm-specific branch at each QtConcurrent::run call site that runs synchronously instead, since the synchronous fallback code already exists in the `!DU::isGuiUp()` paths. I could either modify each condition individuall  …
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/App && echo \"===BrokenView actual QtConcurrent::run?===\" && grep -n \"QtConcurrent::run\\|QFuture\\|Watcher\\|std::thread\\|std::async\" DrawBrokenView.cpp || echo \"NONE - just leftover include\"; echo \"…
tool result
===BrokenView actual QtConcurrent::run?===
NONE - just leftover include
===isGuiUp def===
DrawUtil.h:256:    static bool isGuiUp();
DrawUtil.cpp:1871:bool DrawUtil::isGuiUp()
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/App && sed -n '1,60p' DrawUtil.cpp | grep -n \"isGuiUp\" ; grep -n \"isGuiUp\\b\" DrawUtil.cpp; echo \"===\"; sed -n \"$(grep -n 'DrawUtil::isGuiUp' DrawUtil.cpp | head -1 | cut -d: -f1),+15p\" DrawUtil.cpp"…
tool result
1871:bool DrawUtil::isGuiUp()
===
bool DrawUtil::isGuiUp()
{
    auto* app = QCoreApplication::instance();
    return (app != nullptr) && app->inherits("QApplication");
}


//============================
// various debugging routines.
void DrawUtil::dumpVertexes(const char* text, const TopoDS_Shape& s)
{
    Base::Console().message("DUMP - %s\n", text);
    TopExp_Explorer expl(s, TopAbs_VERTEX);
    for (int i = 1; expl.More(); expl.Next(), i++) {
        const TopoDS_Vertex& v = TopoDS::Vertex  …[truncated]
Fable
thinking
So the issue is that `isGuiUp()` returns true in wasm because QApplication exists, which causes TechDraw to use QtConcurrent::run and hang. The solution is to create a helper function `DrawUtil::useThreadedHlr()` that returns `isGuiUp()` normally but false on wasm, then replace the `!DU::isGuiUp()` conditions throughout the code with `!DU::useThreadedHlr()` to control which code paths use threading.

I'm considering a centralized approach: add a static helper that checks for wasm and returns false there, otherwise returns `isGuiUp()`. This way I can replace the threading decision guards with this new check instead of `isGuiUp()`. But I need to be careful since `isGuiUp()` is used for other p  …
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && echo \"===libarea refs===\" && grep -rniE \"libarea|\\bArea\\b|Mod/Path|#include.*[Aa]rea\\.h|Cam::|libarea\" App Gui CMakeLists.txt Gui/CMakeLists.txt App/CMakeLists.txt 2>/dev/null | grep -iv \"areaAnno…
tool result
===libarea refs===
App/DimensionGeometry.h:158://a convenient container for area dimension
App/DimensionGeometry.h:176:    double area{0};             // this is the outer area without considering holes
App/DimensionGeometry.h:177:    double actualArea{0};       // this is the net area after holes are removed
App/DimensionFormatter.cpp:57:    const bool areaMeasure = m_dimension->Type.isValue("Area");
App/DimensionFormatter.cpp:65:        unit = Base::Unit::Area;
App/DimensionGeometry.cpp:398:    …[truncated]
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && echo \"===exec()/modal dialogs in Gui===\" && grep -rnE \"\\.exec\\(\\)|->exec\\(\\)|QMessageBox::(warning|critical|information|question|about)|QDialog|QInputDialog|QFileDialog|getOpenFileName|getSaveFile…
tool result
===exec()/modal dialogs in Gui===
262
--- breakdown ---
Gui/CommandAnnotate.cpp:45
Gui/Command.cpp:36
Gui/CommandCreateDims.cpp:26
Gui/CommandExtensionPack.cpp:20
Gui/CommandExtensionDims.cpp:17
Gui/MDIViewPage.cpp:9
Gui/CommandDecorate.cpp:8
Gui/DrawGuiUtil.cpp:5
Gui/CommandStack.cpp:5
Gui/mrichtextedit.cpp:4
Gui/ViewProviderProjGroupItem.cpp:4
Gui/TaskDimension.cpp:3
Gui/TaskDimRepair.cpp:3
Gui/ViewProviderViewPart.cpp:2
Gui/ViewProviderProjGroup.cpp:2
Gui/TemplateTextField.cpp:2
Gui/TaskProje  …[truncated]
Fable
thinking
I'm realizing libarea isn't actually a TechDraw dependency—it's used by the Path/CAM workbench instead, and those "area" references in TechDraw are just about area dimensions and geometry. Now I'm looking at the modal dialogs scattered throughout the codebase, particularly the `.exec()` calls in the Command files that mostly involve QMessageBox instances.
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/Gui && echo \"===QMenu::exec (context menus, generally ok)===\" && grep -rn \"\\.exec\\(\\|->exec(\" *.cpp | grep -iE \"menu|contextmenu\" | wc -l; echo \"===Dialog/QDialog exec===\" && grep -rn \"\\.exec()\…
tool result
===QMenu::exec (context menus, generally ok)===
ugrep: error: error at position 13
(?m)\.exec\(\|->exec(
             \___empty (sub)expression


0
===Dialog/QDialog exec===
Command.cpp:440:                msgBox.exec();
CommandExtensionDims.cpp:135:        if (dialog.exec() != QDialog::Accepted) {
DrawGuiUtil.cpp:323:            if (dlg.exec() == QDialog::Accepted) {
DrawGuiUtil.cpp:369:            if (dlg.exec() == QDialog::Accepted) {
DrawGuiUtil.cpp:394:        if (dlg.exec() == QDialog::Acc  …[truncated]
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/Gui && echo \"=== exec breakdown by type ===\" && grep -rhnoE \"(QMessageBox|QMenu|QDialog|QInputDialog|QColorDialog|QFileDialog|[a-zA-Z_]+(Box|[Dd]lg|[Dd]ialog|Menu|ui|dialog))\\.exec\\(\\)|->exec\\(\\)\" *…
tool result
=== exec breakdown by type ===
      3 ->exec()
      1 msgBox.exec()
=== total .exec/->exec ===
12
=== menu context ===
1
Fable
thinking
I'm realizing the actual count of direct `.exec()` calls in TechDraw Gui is much lower than initially thought—around 12 rather than 262—since the earlier number included static QMessageBox calls that are modal internally. Let me get a complete picture by accounting for those static modal calls as well.
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/Gui && echo \"=== static QMessageBox modal calls ===\" && grep -rnE \"QMessageBox::(warning|critical|information|question|about)\\s*\\(\" *.cpp | wc -l; echo \"=== files with them ===\"; grep -rlE \"QMessage…
tool result
=== static QMessageBox modal calls ===
185
=== files with them ===
CommandAlign.cpp
Command.cpp
CommandHelpers.cpp
CommandCreateDims.cpp
CommandDecorate.cpp
CommandAnnotate.cpp
CommandStack.cpp
CommandExtensionDims.cpp
CommandExtensionPack.cpp
DrawGuiUtil.cpp
MDIViewPage.cpp
TaskDimRepair.cpp
TaskActiveView.cpp
TaskComplexSection.cpp
TaskCosmeticCircle.cpp
TaskDimension.cpp
ViewProviderDimension.cpp
ViewProviderBalloon.cpp
TaskProjection.cpp
ViewProviderPage.cpp
ViewProviderProjGroupItem.cpp
Vie  …[truncated]
Fable
thinking
I'm looking at around 185 modal dialog calls scattered throughout the codebase, mostly error and warning notifications triggered from command handlers. These are validation popups that appear before operations execute, and they're invoked through the command pump system. The concern is that under asyncification, these could deadlock if the command pump is running outside the main event loop—QMessageBox::exec() blocks and waits for user interaction, which might not work properly if called from an external command dispatcher.

However, TechDraw commands triggered via toolbar buttons typically run within the Qt event loop context, so the standard nested event loop behavior should be acceptable.  …
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/Gui && echo \"=== QtSvg usage ===\" && grep -rnE \"QSvg|QtSvg|#include <Qt.?Svg\" *.cpp *.h | head -30; echo \"=== Gui CMakeLists Qt libs ===\"; grep -nE \"Qt6::|Qt[A-Za-z]+_LIBRARIES|Svg|find_package|WebEng…
tool result
=== QtSvg usage ===
QGCustomSvg.cpp:41:    m_svgRender = new QSvgRenderer();
QGISVGTemplate.cpp:31:# include <QSvgRenderer>
QGISVGTemplate.cpp:145:        // QSvgRenderer::boundsOnElement calculates the bounds of the text element using text width of the `tspan`
QGISVGTemplate.cpp:173:        // All `text` elements must have an id for using QSvgRenderer::transformForElement later on
QGISVGTemplate.cpp:184:        // QSvgRenderer::transformForElement only returns transform for parents, not for the  …[truncated]
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/Gui && echo \"=== find_package / Qt in CMakeLists ===\"; grep -nE \"find_package|Qt6|QtSvg|Svg|WebEngine|Concurrent|link_libraries|LIBS|include_directories\" CMakeLists.txt | head -40; echo \"=== top of CMak…
tool result
=== find_package / Qt in CMakeLists ===
18:set(TechDrawGui_LIBS
237:    QGCustomSvg.cpp
238:    QGCustomSvg.h
475:target_include_directories(
484:target_link_libraries(TechDrawGui ${TechDrawGui_LIBS})
=== top of CMakeLists ===
if(MSVC)
    add_compile_options(/utf-8)
endif(MSVC)

# In previous versions this target copied mtextedit.h to the binary directory that causes
# automoc to generate linking errors.
if(NOT ${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})
    if (EXISTS ${CMAKE_CURRENT_BIN  …[truncated]
Fable
thinking
I need to trace how the Qt libraries are being pulled in through the CMake configuration, particularly checking whether Svg and SvgWidgets are included in the Qt component list and how they're being linked through the root CMake setup.
Fable
⚙ Bash {"command": "echo \"=== Qt components in cMakeLists / cmake ===\"; grep -rnE \"Svg|SvgWidgets|Concurrent\" cMake/ cmake/ CMakeLists.txt 2>/dev/null | grep -iE \"svg|concurrent|find_package|COMPONENTS\" | head -30; echo \"=== find dir ===\";…
tool result
=== Qt components in cMakeLists / cmake ===
cMake/FindPySide6.cmake:50:            COMMAND ${Python3_EXECUTABLE} -c "import PySide6.QtSvgWidgets"
cMake/FindPySide6.cmake:61: PySide6.QtSvgWidgets Python module not found.
cMake/FindPySide6.cmake:65: that includes QtSvgWidgets.
cMake/UseLibPackCLbundler.cmake:18:set (Qt5Concurrent_DIR ${Qt5_ROOT_DIR}/lib/cmake/Qt5Concurrent CACHE PATH "")
cMake/UseLibPackCLbundler.cmake:36:set (Qt5Svg_DIR ${Qt5_ROOT_DIR}/lib/cmake/Qt5Svg CACHE PATH "")
cMake/FreeCA  …[truncated]
Fable
⚙ Bash {"command": "cd cMake/FreeCAD_Helpers && sed -n '1,60p' SetupQt.cmake", "description": "Read SetupQt.cmake fully"}
tool result
# -------------------------------- Qt --------------------------------

set(FREECAD_QT_COMPONENTS Core Concurrent Network Xml)
if(EMSCRIPTEN)
    # LinguistTools (host lrelease via QT_HOST_PATH) is needed even for the
    # console build's qt_add_translation calls.
    list(APPEND FREECAD_QT_COMPONENTS LinguistTools)
endif()

if (FREECAD_QT_MAJOR_VERSION EQUAL 5)
    message(WARNING [[

     ******************************************************************
        Qt5 support is deprecated: ple  …[truncated]
Fable
thinking
Qt Svg and SvgWidgets are available in the wasm build, but QtConcurrent's thread pool will hang at runtime even though the headers and libraries exist. The real issue is runtime behavior, not linking.
Fable
⚙ Bash {"command": "ls /opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/lib/cmake/ | grep -iE \"Svg|Concurrent\"; echo \"=== lib archives ===\"; ls /opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/lib/ | grep -iE \"Svg|Concurrent\"", "desc…
tool result
Qt6Concurrent
Qt6Svg
Qt6SvgPrivate
Qt6SvgWidgets
=== lib archives ===
libQt6Concurrent.a
libQt6Concurrent.prl
libQt6Svg.a
libQt6Svg.prl
libQt6SvgWidgets.a
libQt6SvgWidgets.prl
Fable
thinking
All the Qt modules check out, but I'm seeing a critical dependency issue with TechDraw—it requires Measure, Spreadsheet, and PartDesign to be built, but according to the task only Part, Sketcher, Material, and Start are enabled. This is a blocker.

Let me look at the CMakeCache to understand what's actually configured.
Fable
⚙ Bash {"command": "grep -nE \"BUILD_MEASURE|BUILD_SPREADSHEET|BUILD_PART_DESIGN|BUILD_SKETCHER|BUILD_MATERIAL|BUILD_IMPORT|BUILD_START|BUILD_PART:\" /opt/toolchains/src/freecad-gui-build/CMakeCache.txt", "description": "Check dependency module bu…
tool result
61:BUILD_IMPORT:BOOL=OFF
70:BUILD_MATERIAL:BOOL=ON
73:BUILD_MATERIAL_EXTERNAL:BOOL=OFF
76:BUILD_MEASURE:BOOL=OFF
88:BUILD_PART:BOOL=ON
91:BUILD_PART_DESIGN:BOOL=OFF
112:BUILD_SKETCHER:BOOL=ON
115:BUILD_SPREADSHEET:BOOL=OFF
118:BUILD_START:BOOL=ON
Fable
thinking
I'm discovering that TechDraw has a significant dependency chain—its CMakeLists file specifies that Measure, Spreadsheet, and PartDesign are required libraries, but all three are currently disabled in the build configuration. This means enabling TechDraw forces me to also enable these three modules. I need to verify whether these are hard-linked dependencies or if some might be optional, and determine if PartDesign is truly necessary or could potentially be excluded.
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && echo \"=== Measure includes/usage ===\"; grep -rlE \"Mod/Measure|Measure::\" App Gui --include=*.cpp --include=*.h | head; echo \"=== Spreadsheet ===\"; grep -rlE \"Mod/Spreadsheet|Spreadsheet::\" App Gui…
tool result
=== Measure includes/usage ===
App/DimensionAutoCorrect.cpp
App/DimensionReferences.cpp
App/DrawViewDimension.h
App/DrawViewBalloon.cpp
App/DrawViewDimension.cpp
App/ShapeExtractor.cpp
Gui/DimensionValidators.cpp
=== Spreadsheet ===
App/DrawViewSpreadsheet.cpp
Gui/Command.cpp
Gui/AppTechDrawGui.cpp
Gui/QGIViewSpreadsheet.cpp
Gui/ViewProviderSpreadsheet.cpp
=== PartDesign ===
App/DimensionReferences.cpp
=== Import ===
App/AppTechDrawPy.cpp
App/DrawComplexSection.cpp
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && echo \"=== PartDesign usage detail ===\"; grep -nE \"Mod/PartDesign|PartDesign::\" App/DimensionReferences.cpp; echo \"=== Measure usage sample ===\"; grep -nE \"Mod/Measure|Measure::\" App/DrawViewDimens…
tool result
=== PartDesign usage detail ===
39:#include <Mod/PartDesign/App/Body.h>
40:#include <Mod/PartDesign/App/Feature.h>
=== Measure usage sample ===
66:#include <Mod/Measure/App/Measurement.h>
248:    measurement = new Measure::Measurement();
=== Import usage ===
App/AppTechDrawPy.cpp:45:#include <Mod/Import/App/dxf/ImpExpDxf.h>
App/AppTechDrawPy.cpp:85:using Import::ImpExpDxfWrite;
App/DrawComplexSection.cpp:1511://! +/- same code as in Import::SketchExportHelper
Fable
thinking
I'm looking at the dependency chain for this build. Measure and Spreadsheet are hard requirements that need to be included, but PartDesign is more complex—it's used for detecting Body and Feature types in the dimension references code, and while it's a heavy dependency, there might be a way to conditionally compile or stub it out rather than making it mandatory.

Import is another conditional dependency that's linked only when BUILD_IMPORT is enabled, since it's primarily used for DXF export functionality. The tricky part is that AppTechDrawPy.cpp includes it unconditionally, so I need to check whether that's properly guarded or if it needs to be wrapped in a conditional compilation block.
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && echo \"=== Import guard in AppTechDrawPy ===\"; grep -nE \"BUILD_IMPORT|ifdef|ifndef|Import|dxf|Dxf|DXF\" App/AppTechDrawPy.cpp | head -30; echo \"=== PartDesign in DimensionReferences - how used ===\"; g…
tool result
=== Import guard in AppTechDrawPy ===
45:#include <Mod/Import/App/dxf/ImpExpDxf.h>
85:using Import::ImpExpDxfWrite;
135:        add_varargs_method("viewPartAsDxf", &Module::viewPartAsDxf,
136:            "string = viewPartAsDxf(DrawViewPart) -- Return the edges of a DrawViewPart in Dxf format."
141:        add_varargs_method("writeDXFView", &Module::writeDXFView,
142:            "writeDXFView(view, filename): Exports a DrawViewPart to a DXF file."
144:        add_varargs_method("writeDXFPa  …[truncated]
Fable
thinking
I'm noticing a mismatch in how the Import module is handled — it's included unconditionally in the source file but only conditionally linked in CMake, which would cause a linker failure if the code tries to use Import symbols without the library being available.

Let me check whether the DXF functions are actually guarded with preprocessor directives or if they're always compiled, and search through the file for any conditional compilation around the Import usage.
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && grep -nE \"#if|#ifdef|#ifndef|#else|#endif|TechDrawExport|BUILD_IMPORT\" App/AppTechDrawPy.cpp | head; echo \"=== count ImpExpDxfWrite uses ===\"; grep -c \"ImpExpDxfWrite\" App/AppTechDrawPy.cpp; echo \"…
tool result
72:#include "TechDrawExport.h"
=== count ImpExpDxfWrite uses ===
4
=== DrawComplexSection Import use ===
1511://! +/- same code as in Import::SketchExportHelper
Fable
thinking
I'm realizing that AppTechDrawPy.cpp references ImpExpDxfWrite without any conditional compilation guards, which would cause a linker failure if the Import library isn't available. The build configuration only links the Import library when BUILD_IMPORT is enabled, so when it's disabled, those symbols would be undefined and the build would break.

Looking at the actual dependencies, TechDraw needs Measure, Spreadsheet, PartDesign, and Import modules, all currently disabled. This creates a cascading dependency problem. Let me evaluate each one's feasibility for WebAssembly: Measure and Spreadsheet are lightweight App-level modules that should be fine, PartDesign is heavy but depends on Sketche  …
Fable
⚙ Bash {"command": "cd src/Mod && grep -rnE \"BUILD_TECHDRAW|TECHDRAW\" ../CMakeLists.txt CMakeLists.txt 2>/dev/null | head; echo \"=== module dep enforcement ===\"; grep -rnE \"BUILD_MEASURE|BUILD_SPREADSHEET|BUILD_PART_DESIGN|BUILD_IMPORT\" ../C…
tool result
CMakeLists.txt:117:if(BUILD_TECHDRAW)
CMakeLists.txt:119:endif(BUILD_TECHDRAW)
=== module dep enforcement ===
CMakeLists.txt:29:if(BUILD_IMPORT)
CMakeLists.txt:31:endif(BUILD_IMPORT)
CMakeLists.txt:61:if(BUILD_PART_DESIGN)
CMakeLists.txt:63:endif(BUILD_PART_DESIGN)
CMakeLists.txt:101:if(BUILD_SPREADSHEET)
CMakeLists.txt:103:endif(BUILD_SPREADSHEET)
CMakeLists.txt:113:if(BUILD_MEASURE)
CMakeLists.txt:115:endif(BUILD_MEASURE)
Fable
⚙ Bash {"command": "cd src/Mod && sed -n '25,120p' CMakeLists.txt", "description": "Read module build order and dep enforcement"}
tool result
if(BUILD_HELP)
  add_subdirectory(Help)
endif(BUILD_HELP)

if(BUILD_IMPORT)
  add_subdirectory(Import)
endif(BUILD_IMPORT)

if(BUILD_INSPECTION)
  add_subdirectory(Inspection)
endif(BUILD_INSPECTION)

if(BUILD_JTREADER)
  add_subdirectory(JtReader)
endif(BUILD_JTREADER)

if(BUILD_MATERIAL)
  add_subdirectory(Material)
endif(BUILD_MATERIAL)

if(BUILD_MESH)
  add_subdirectory(Mesh)
endif(BUILD_MESH)

if(BUILD_MESH_PART)
  add_subdirectory(MeshPart)
endif(BUILD_MESH_PART)

if(BUILD_OPENSCAD)
  add_  …[truncated]
Fable
thinking
I'm checking the dependencies for PartDesign and Import to understand the WebAssembly effort involved. PartDesign relies on Sketcher and Part, both of which are enabled, so that's straightforward. Import is more complex since it depends on Part and OCC data exchange formats like STEP and IGES, so I need to dig into Import's own dependency chain to see what else might be required.

Since TechDraw is the main target, I should focus on flagging threading hazards in the dependency modules rather than fully porting them—I'll document the effort needed. Let me scan through Measure, Spreadsheet, PartDesign, and Import for any threading issues that could cause problems.
Fable
⚙ Bash {"command": "cd src/Mod && for m in Measure Spreadsheet PartDesign Import; do echo \"=== $m threading ===\"; grep -rlE \"QtConcurrent|std::thread|std::async|QThreadPool\" $m --include=*.cpp --include=*.h 2>/dev/null | head; done", "descript…
tool result
=== Measure threading ===
=== Spreadsheet threading ===
=== PartDesign threading ===
=== Import threading ===
Fable
thinking
I'm checking whether the Import module has external dependencies like OpenCASCADE or other libraries, and whether I can guard the DXF functions to make Import optional. I should also verify that Measure, Spreadsheet, and PartDesign don't rely on PySide or heavy external dependencies, then examine the Import CMakeLists to see what it actually requires.
Fable
⚙ Bash {"command": "cd src/Mod/Import && grep -nE \"find_package|_LIBRARIES|OCC|opencv|python|pybind|OpenCASCADE|DE_|target_link\" CMakeLists.txt App/CMakeLists.txt 2>/dev/null | grep -ivE \"generate_from_py|SET\\(|set\\(\" | head -30", "descripti…
tool result
CMakeLists.txt:9:#    PYSIDE_WRAP_RC(Import_QRC_SRCS Resources/Import.qrc)
App/CMakeLists.txt:5:    ${OCC_OCAF_LIBRARIES}
App/CMakeLists.txt:6:    ${OCC_OCAF_DEBUG_LIBRARIES}
App/CMakeLists.txt:66:target_link_libraries(Import ${Import_LIBS})
Fable
thinking
Import App has the OCC OCAF dependencies it needs, but pulling it in might bring additional dependencies like SketchExport and the DXF read/write functionality. I'm weighing two options: either build Import as well, or use a macro to gate the four DXF Python methods in AppTechDrawPy.cpp so TechDraw doesn't require Import. Since Import is relatively straightforward to build, I'm leaning toward including it.

Now I'm checking whether Import Gui has PySide or webengine dependencies that would complicate things. Actually, I think the pragmatic approach is to guard out the DXF export methods to avoid the Import dependency altogether—that's lower risk. I should also enable Measure, Spreadsheet, an  …
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && grep -nE \"PartDesign|Body|::Feature\" App/DimensionReferences.cpp", "description": "See PartDesign usage in DimensionReferences"}
tool result
39:#include <Mod/PartDesign/App/Body.h>
40:#include <Mod/PartDesign/App/Feature.h>
310:    auto shape = Part::Feature::getTopoShape(getObject(), Part::ShapeOption::ResolveLink | Part::ShapeOption::Transform);
Fable
thinking
I notice the PartDesign headers are included at the top of the file, but when I search through the actual code, I'm not seeing those classes being used anywhere—line 310 uses Part::Feature instead. Let me check if PartDesign symbols are referenced anywhere else in the implementation.
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && echo \"=== actual PartDesign symbol usage (excluding includes) ===\"; grep -nE \"PartDesign::|dynamic_cast.*Body|PartDesign::Body|PartDesign::Feature\" App/*.cpp Gui/*.cpp; echo \"=== grep whole module fo…
tool result
=== actual PartDesign symbol usage (excluding includes) ===
=== grep whole module for PartDesign namespace ===
Fable
thinking
PartDesign is actually a false dependency—those two includes in DimensionReferences.cpp are dead code with no corresponding PartDesign:: references anywhere in the codebase. I can safely remove those includes and drop PartDesign from TechDrawLIBS entirely, eliminating the need to build it at all.

Now I need to verify that Measure and Spreadsheet are truly required and self-contained. Measure is actively used through the Measurement class, and Spreadsheet is needed for DrawViewSpreadsheet, so both must be built. Import is only used for DXF export Python API methods, so I can either build it or conditionally guard those methods. Let me check if Measure and Spreadsheet have any further OFF dep  …
Fable
⚙ Bash {"command": "cd src/Mod && echo \"=== Measure App LIBS ===\"; grep -nE \"_LIBS|Measure_LIBS|list\\(APPEND\" Measure/App/CMakeLists.txt | head; echo \"--- Measure link ---\"; grep -rnE \"Mod/[A-Z]\" Measure/App/*.cpp Measure/App/*.h 2>/dev/n…
tool result
=== Measure App LIBS ===
3:set(Measure_LIBS
84:target_link_libraries(Measure ${Measure_LIBS})
--- Measure link ---
Mod/Measure/
Mod/Part/
=== Spreadsheet App deps ===
=== Spreadsheet LIBS ===
7:set(Spreadsheet_LIBS
61:target_link_libraries(Spreadsheet ${Spreadsheet_LIBS})
Fable
⚙ Bash {"command": "cd src/Mod && sed -n '3,12p' Measure/App/CMakeLists.txt; echo \"===\"; sed -n '7,16p' Spreadsheet/App/CMakeLists.txt; echo \"=== Measure Gui exists / needed? ===\"; ls Measure/Gui 2>/dev/null | head -3; echo \"TechDraw Gui uses…
tool result
set(Measure_LIBS
    Part
    FreeCADApp
)

generate_from_py(Measurement)
generate_from_py(MeasureBase)

SET(Python_SRCS
    Measurement.pyi
===
set(Spreadsheet_LIBS
    FreeCADApp
)

set(Spreadsheet_SRCS
    Cell.cpp
    Cell.h
    DisplayUnit.h
    PreCompiled.h
    PropertySheet.cpp
=== Measure Gui exists / needed? ===
AppMeasureGui.cpp
CMakeLists.txt
Command.cpp
TechDraw Gui uses Measure Gui?
Fable
thinking
Measure App is self-contained with just Part and FreeCADApp dependencies, while Spreadsheet App only depends on FreeCADApp, both building easily. I'm wondering whether TechDraw Gui uses Measure Gui, and if either Measure or Spreadsheet Gui have PySide or webengine compatibility issues since these modules build together.
Fable
⚙ Bash {"command": "cd src/Mod && for m in Measure Spreadsheet; do echo \"=== $m Gui hazards ===\"; grep -rlE \"QtConcurrent|std::thread|WebEngine|QtCharts|QWebEngine\" $m/Gui --include=*.cpp --include=*.h 2>/dev/null; grep -rnE \"PySide|shiboken\…
tool result
=== Measure Gui hazards ===
=== Spreadsheet Gui hazards ===
=== Spreadsheet Gui Qt charts? ===
Fable
thinking
Measure and Spreadsheet Gui look clean without threading or webengine dependencies, so their builds should be straightforward. Now I'm checking TechDraw's InitGui.py to see what PySide dependencies the workbench needs, and looking into whether the task panels are C++ or Python—it seems the task panels themselves are C++, but there are some Python-based tools in the TechDrawTools directory that I need to examine.
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && echo \"=== InitGui.py PySide ===\"; grep -nE \"PySide|import|Gui.add\" InitGui.py | head -20; echo \"=== TechDrawTools python PySide ===\"; grep -rlE \"PySide|from PySide|import PySide\" TechDrawTools *.p…
tool result
=== InitGui.py PySide ===
45:        import TechDrawGui
48:            import TechDrawTools
60:Gui.addWorkbench(TechDrawWorkbench())
=== TechDrawTools python PySide ===
TechDrawTools/CommandFillTemplateFields.py
TechDrawTools/CommandAxoLengthDimension.py
TechDrawTools/TaskAddOffsetVertex.py
TechDrawTools/CommandVertexCreations.py
TechDrawTools/TaskMoveView.py
TechDrawTools/TaskShareView.py
TechDrawTools/TaskFillTemplateFields.py
TechDrawTools/CommandShareView.py
TechDrawTools/CommandPositionS  …[truncated]
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && echo \"=== PySide imports in TechDrawTools ===\"; grep -rnE \"PySide|QtWidgets|QtGui|QtCore|FreeCADGui.PySideUic|Gui.UiLoader\" TechDrawTools/*.py | head -20; echo \"=== count py files importing PySide ==…
tool result
=== PySide imports in TechDrawTools ===
TechDrawTools/CommandPositionSectionView.py:33:from PySide.QtCore import QT_TRANSLATE_NOOP
TechDrawTools/CommandShareView.py:29:from PySide.QtCore import QT_TRANSLATE_NOOP
TechDrawTools/CommandAxoLengthDimension.py:33:from PySide.QtCore import QT_TRANSLATE_NOOP
TechDrawTools/CommandHoleShaftFit.py:29:from PySide.QtCore import QT_TRANSLATE_NOOP
TechDrawTools/CommandHoleShaftFit.py:30:from PySide import QtGui
TechDrawTools/CommandHoleShaftFit.py:31:from PySi  …[truncated]
Fable
thinking
All thirteen TechDrawTools Python command files depend on PySide, which is disabled, so they'll fail to import at runtime and won't be available. However, InitGui.py wraps the TechDrawTools import in a try block, so the failure shouldn't crash the workbench load. Most of TechDraw's core functionality is implemented in C++ anyway, so the TechDrawTools subset being unavailable shouldn't break the main workbench.
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && sed -n '40,62p' InitGui.py", "description": "Read InitGui.py workbench init"}
tool result
        self.__class__.ToolTip = "Technical Drawing workbench"

    def Initialize(self):
        # load the module

        import TechDrawGui

        try:
            import TechDrawTools
        except ImportError as err:
            FreeCAD.Console.PrintError(
                "Features from TechDrawTools package cannot be loaded. {err}\n".format(
                    err=str(err)
                )
            )

    def GetClassName(self):
        return "TechDrawGui::Workbe  …[truncated]
Fable
thinking
The try/except wrapper around the TechDraw import should catch the shiboken loading failure since that typically raises an ImportError, so the workbench can still initialize even if PySide isn't available.

Now I need to look at how TechDrawTools itself imports its submodules — if it tries to load everything at package initialization, a single missing dependency could break the entire module.
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && cat TechDrawTools/__init__.py; echo \"=== C++ commands that call Python TechDrawTools ===\"; grep -rnE \"TechDrawTools|runFeatmethod|Gui.runCommand\" Gui/*.cpp | grep -i \"techdrawtools\" | head", "descri…
tool result
# ***************************************************************************
# *   Copyright (c) 2022 Wanderer Fan <wandererfan@gmail.com>               *
# *                                                                         *
# *   This program is free software; you can redistribute it and/or modify  *
# *   it under the terms of the GNU Lesser General Public License (LGPL)    *
# *   as published by the Free Software Foundation; either version 2 of     *
# *   the License, or (at your o  …[truncated]
Fable
thinking
The ImportError from PySide will be caught by the try/except in InitGui, so the workbench loads in degraded mode without those TechDrawTools commands available—ShareView, MoveView, AxoLengthDimension, and the others won't be accessible, but that's acceptable. Now I need to check how TechDraw registers its inittab.
Fable
⚙ Bash {"command": "echo \"=== WasmInittab files ===\"; find . -name \"WasmInittab*.cpp\" -o -name \"WasmInittab*\" 2>/dev/null | head; echo \"=== existing entries ===\"; find . -path \"*Main*\" -name \"WasmInittab*.cpp\" 2>/dev/null; grep -rn \"P…
tool result
=== WasmInittab files ===
=== existing entries ===
Fable
⚙ Bash {"command": "cd src/Main && ls | grep -iE \"wasm|inittab\"; echo \"=== search whole tree ===\"; find /home/magik6k/lcad-wasm/freecad-port/FreeCAD -iname \"*inittab*\" 2>/dev/null; echo \"=== grep AppendInittab ===\"; grep -rn \"PyImport_App…
tool result
=== search whole tree ===
=== grep AppendInittab ===
Fable
thinking
I see that WasmInittab.cpp isn't in the source tree but gets generated during the build process, likely through a CMake script that reads the BUILD_* flags. Let me track down how that generation works.
Fable
⚙ Bash {"command": "grep -rln \"AppendInittab\\|WasmInittab\\|Inittab\" /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src /home/magik6k/lcad-wasm/freecad-port/FreeCAD/cMake 2>/dev/null | head; echo \"=== in build dir ===\"; find /opt/toolchains/src…
tool result
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/App/Application.cpp
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Main/MainGui.cpp
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Main/MainCmd.cpp
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Main/CMakeLists.txt
=== in build dir ===
/opt/toolchains/src/freecad-gui-build/src/Main/WasmInittabGui.cpp
/opt/toolchains/src/freecad-gui-build/src/Main/WasmInittab.cpp
/opt/toolchains/src/freecad-gui-build/src/Main/CMakeFiles/FreeCADMain.dir/WasmIn  …[truncated]
Fable
⚙ Bash {"command": "cat /opt/toolchains/src/freecad-gui-build/src/Main/WasmInittabGui.cpp; echo \"=====APP=====\"; cat /opt/toolchains/src/freecad-gui-build/src/Main/WasmInittab.cpp", "description": "Read generated inittab files"}
tool result
// Generated by src/Main/CMakeLists.txt (wasm port)
#include <Python.h>
extern "C" PyObject* PyInit_Part();
extern "C" PyObject* PyInit_Sketcher();
extern "C" PyObject* PyInit_Materials();
extern "C" PyObject* PyInit_PartGui();
extern "C" PyObject* PyInit_SketcherGui();
extern "C" PyObject* PyInit_MatGui();
extern "C" PyObject* PyInit_StartGui();
void freecadWasmRegisterInittab()
{
    PyImport_AppendInittab("Part", PyInit_Part);
    PyImport_AppendInittab("Sketcher", PyInit_Sketcher);
    PyImp  …[truncated]
Fable
thinking
I need to check the CMakeLists.txt file in src/Main to understand how modules are registered based on BUILD_* flags.
Fable
⚙ Bash {"command": "grep -n \"Inittab\\|WASM_PY_MODULE\\|BUILD_PART\\|BUILD_SKETCHER\\|BUILD_MATERIAL\\|BUILD_START\\|PyInit\\|AppendInittab\\|EMSCRIPTEN\\|foreach\\|set(WASM\" /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Main/CMakeLists.txt |…
tool result
8:if(EMSCRIPTEN)
11:    set(FREECAD_WASM_PY_MODULES "")
13:    if(BUILD_PART)
14:        list(APPEND FREECAD_WASM_PY_MODULES Part)
17:    if(BUILD_SKETCHER)
18:        list(APPEND FREECAD_WASM_PY_MODULES Sketcher)
21:    if(BUILD_PART_DESIGN)
22:        list(APPEND FREECAD_WASM_PY_MODULES PartDesign)
26:        list(APPEND FREECAD_WASM_PY_MODULES Spreadsheet)
29:    if(BUILD_MATERIAL)
30:        list(APPEND FREECAD_WASM_PY_MODULES Materials)
34:        list(APPEND FREECAD_WASM_PY_MODULES Measure  …[truncated]
Fable
⚙ Bash {"command": "sed -n '8,70p' /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Main/CMakeLists.txt", "description": "Read full inittab generation block"}
tool result
if(EMSCRIPTEN)
    # Python extension modules are linked statically into the executables and
    # must be registered on the interpreter's inittab before Py_Initialize().
    set(FREECAD_WASM_PY_MODULES "")
    set(FREECAD_WASM_PY_GUI_MODULES "")
    if(BUILD_PART)
        list(APPEND FREECAD_WASM_PY_MODULES Part)
        list(APPEND FREECAD_WASM_PY_GUI_MODULES PartGui)
    endif()
    if(BUILD_SKETCHER)
        list(APPEND FREECAD_WASM_PY_MODULES Sketcher)
        list(APPEND FREECAD_WASM_PY_GU  …[truncated]
Fable
thinking
I see that TechDraw itself isn't being included in the inittab generation even though the BUILD_TECHDRAW flag exists, so I need to add a conditional block that appends both the TechDraw module and its GUI counterpart to the appropriate lists when the flag is enabled.
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && grep -nE \"PyInit_|PyMODINIT|initTechDraw|MOD_INIT\" App/AppTechDraw.cpp Gui/AppTechDrawGui.cpp | head; echo \"=== Measure/Spreadsheet PyInit names ===\"; grep -nE \"PyInit_\" ../Measure/App/AppMeasure*.c…
tool result
Gui/AppTechDrawGui.cpp:106:PyMOD_INIT_FUNC(TechDrawGui)
App/AppTechDraw.cpp:72:PyMOD_INIT_FUNC(TechDraw)
=== Measure/Spreadsheet PyInit names ===
Fable
thinking
I'm verifying the PyInit function names for TechDraw and TechDrawGui match the expected pattern, then checking that Measure, Spreadsheet, and their GUI variants are correctly configured in the cmake setup.
Fable
⚙ Bash {"command": "cd src/Mod && grep -rnE \"PyMOD_INIT_FUNC|PyInit_\" Measure/App/AppMeasure.cpp Spreadsheet/App/AppSpreadsheet.cpp Measure/Gui/AppMeasureGui*.cpp Spreadsheet/Gui/AppSpreadsheetGui*.cpp 2>/dev/null | grep -iE \"init\" | head", "d…
tool result
Measure/App/AppMeasure.cpp:84:PyMOD_INIT_FUNC(Measure)
Measure/Gui/AppMeasureGui.cpp:72:PyMOD_INIT_FUNC(MeasureGui)
Spreadsheet/App/AppSpreadsheet.cpp:55:PyMOD_INIT_FUNC(Spreadsheet)
Spreadsheet/Gui/AppSpreadsheetGui.cpp:129:PyMOD_INIT_FUNC(SpreadsheetGui)
Fable
thinking
Looking at a few more TechDraw-specific concerns: the graphics view uses QGraphicsView and QGraphicsScene with QGI items, which should work in WebAssembly with an offscreen framebuffer approach. I need to check whether printing and PDF export through QPrinter will function properly in WebAssembly, so I'm examining PagePrinter.cpp to see what's involved there.

I'm also realizing that QtConcurrent::run under WebAssembly with no threading support is a real problem — the task gets posted to a thread pool with zero threads, so it never executes, and any QFutureWatcher waiting for it to finish will hang indefinitely. That explains the memory issue I noted earlier. The graphics scene rendering pat  …
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/Gui && echo \"=== QPrinter/printing ===\"; grep -rlnE \"QPrinter|QPrintDialog|QPrintPreview|QPageSetup\" *.cpp; echo \"=== OpenGL/QOpenGL ===\"; grep -rlnE \"QOpenGL|QGLWidget|setViewport.*GL\" *.cpp; echo \…
tool result
=== QPrinter/printing ===
MDIViewPage.cpp
PagePrinter.cpp
=== OpenGL/QOpenGL ===
QGVPage.cpp
=== QProcess/system ===
=== clipboard/drag ===
mrichtextedit.cpp
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/Gui && echo \"=== QGVPage OpenGL usage ===\"; grep -nE \"QOpenGL|OpenGL|setViewport|QGLWidget\" QGVPage.cpp | head; echo \"=== QPrinter in PagePrinter ===\"; grep -nE \"QPrinter|QPrintDialog|print\\(|PdfWrit…
tool result
=== QGVPage OpenGL usage ===
30:#include <QOpenGLWidget>
158:    //    setRenderer(OpenGL);  //gives rotten quality, don't use this
322:    if (m_renderer == RendererType::OpenGL) {
324:        setViewport(new QOpenGLWidget);
325:        setViewportUpdateMode(QGraphicsView::SmartViewportUpdate);
329:        setViewport(new QWidget);
330:        setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
=== QPrinter in PagePrinter ===
30:#include <QPdfWriter>
31:#include <QPrintDialog>
33:#include  …[truncated]
Fable
thinking
Looking at the QGVPage implementation, I see that OpenGL is just one renderer option with the default being a software raster renderer using QWidget, which works fine in WebAssembly. The renderer type is configurable, and I need to verify that the default stays as the raster path when running under wasm to avoid issues with QOpenGLWidget.

For printing, QPrinter and the modal QPrintDialog won't function in wasm since there's no printing subsystem, but QPdfWriter can export to PDF by writing to the filesystem buffer and triggering a download. SVG export via QSvgGenerator also works. I need to trace where the print commands are triggered to see if they're using the blocking exec() call and ens  …
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/Gui && grep -rnE \"QPrintDialog|QPrinter|printPdf|PrintDialog|->exec\\(\\)|QPrintPreview\" MDIViewPage.cpp Command.cpp | grep -iE \"print|exec\" | head -20; echo \"=== m_renderer default ===\"; grep -nE \"m_…
tool result
MDIViewPage.cpp:36:#include <QPrintDialog>
MDIViewPage.cpp:37:#include <QPrintPreviewDialog>
MDIViewPage.cpp:38:#include <QPrinter>
MDIViewPage.cpp:354:void MDIViewPage::printPdf()
MDIViewPage.cpp:363:    QPrinter printer(QPrinter::HighResolution);
MDIViewPage.cpp:374:    QPrintDialog dlg(&printer, this);
MDIViewPage.cpp:384:    QPrinter printer(QPrinter::HighResolution);
MDIViewPage.cpp:395:    QPrintPreviewDialog dlg(&printer, this);
MDIViewPage.cpp:396:    connect(&dlg, &QPrintPreview  …[truncated]
Fable
thinking
The default renderer for QGPage is the native raster type, which is safe for WebAssembly, so no changes are needed there. However, printing is problematic—the print dialog and print preview both use modal dialogs that won't function in WebAssembly environments.

For the MVP, I should guard the print commands (Std_Print, Std_PrintPdf, Std_PrintPreview) with conditional compilation to disable them in WebAssembly builds. The SVG and DXF export paths write directly to files through MEMFS, so those work fine as the primary export mechanisms. A more complete solution would provide direct PDF export via QPdfWriter to MEMFS with a browser download trigger, but that's an enhancement beyond the initia  …
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/App && grep -rn \"QtConcurrent::run\" *.cpp; echo \"=== isGuiUp guard sites ===\"; grep -rn \"isGuiUp\" *.cpp; echo \"=== GeometryObject internal threading ===\"; grep -nE \"QtConcurrent|std::thread|std::asy…
tool result
DrawComplexSection.cpp:270:        m_alignFuture = QtConcurrent::run(std::move(lambda));
DrawViewPart.cpp:382:    m_hlrFuture = QtConcurrent::run(std::move(lambda));
DrawViewPart.cpp:434:            m_faceFuture = QtConcurrent::run(std::move(lambda));
DrawViewDetail.cpp:206:    m_detailFuture = QtConcurrent::run(std::move(lambda));
DrawViewSection.cpp:490:        m_cutFuture = QtConcurrent::run(std::move(lambda));
=== isGuiUp guard sites ===
DrawUtil.cpp:1871:bool DrawUtil::isGuiUp()
DrawViewDet  …[truncated]
Fable
thinking
I'm realizing the cleanest approach would be to make `isGuiUp()` return false on WebAssembly, which would automatically bypass all the threading code paths and use the existing synchronous fallbacks instead. I need to verify this is safe by checking the nine places where `isGuiUp()` is called, particularly the non-threading usages in DrawViewSection and DrawViewDetail, to ensure returning false won't break other logic.

The tricky part is that `isGuiUp()` might also gate legitimate GUI features like progress dialogs and paint requests, not just threading decisions. So I need to audit all its uses across the module to understand whether a global false return would disable features we actually  …
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && grep -rn \"isGuiUp\" App Gui --include=*.cpp --include=*.h; echo \"=== context 623/637 section ===\"; sed -n '615,645p' App/DrawViewSection.cpp; echo \"=== detail 410-420 ===\"; sed -n '408,420p' App/Draw…
tool result
App/DrawUtil.cpp:1871:bool DrawUtil::isGuiUp()
App/DrawViewDetail.cpp:188:    if (!DU::isGuiUp()) {
App/DrawViewDetail.cpp:416:    if (!DU::isGuiUp()) {
App/DrawUtil.h:256:    static bool isGuiUp();
App/DrawViewSection.cpp:468:    if (!DU::isGuiUp()) {
App/DrawViewSection.cpp:623:    if (DU::isGuiUp()) {
App/DrawViewSection.cpp:637:    if (!DU::isGuiUp()) {
App/DrawViewPart.cpp:303:        !DU::isGuiUp()) {
App/DrawViewPart.cpp:364:    if (!DU::isGuiUp()) {
App/DrawViewPart.cpp:418:    if (handl  …[truncated]
Fable
thinking
I see now that the isGuiUp() checks serve dual purposes across those callbacks. When isGuiUp() returns false, it skips the watcher disconnect at line 623 (which is harmless in sync mode since the watcher was never connected), but the checks at lines 637 and 416 become critical—they're what triggers the onHlrFinished() call needed to chain to HLR, since buildGeometryObject doesn't complete that step in sync mode.

Making isGuiUp() return false globally on wasm would make all paths synchronous: partExec calls onHlrFinished directly, buildGeometryObject runs projectShape synchronously then onHlrFinished handles postHlr and extractFaces, Section runs makeSectionCut synchronously, and Detail does  …
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/App && echo \"=== ComplexSection makeSectionCut full ===\"; sed -n '254,283p' DrawComplexSection.cpp; echo \"=== does DCS override sectionExec? ===\"; grep -n \"sectionExec\\|::makeSectionCut\\|onSectionCutF…
tool result
=== ComplexSection makeSectionCut full ===
void DrawComplexSection::makeSectionCut(const TopoDS_Shape& baseShape)
{
    if (ProjectionStrategy.getValue() == 0) {
        //Offset. Use regular section behaviour
        return DrawViewSection::makeSectionCut(baseShape);
    }

    try {
        connectAlignWatcher =
            QObject::connect(&m_alignWatcher, &QFutureWatcherBase::finished, &m_alignWatcher,
                             [this] { this->onSectionCutFinished(); });

        // We cre  …[truncated]
Fable
thinking
I'm checking the onSectionCutFinished method in the DCS code to see how the m_alignFuture.isRunning() guard works.
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/App && sed -n '283,297p' DrawComplexSection.cpp", "description": "Read DCS onSectionCutFinished"}
tool result
void DrawComplexSection::onSectionCutFinished()
{
    if (m_cutFuture.isRunning() ||  //waitingForCut()
        m_alignFuture.isRunning()) {//waitingForAlign()
        //can not continue yet.  return until the other thread ends
        return;
    }

    DrawViewSection::onSectionCutFinished();

    QObject::disconnect(connectAlignWatcher);
}

//! for Aligned strategy, cut the rawShape by each segment of the tool profile and arrange the
//! cut results in order.
Fable
thinking
For the DCS::onSectionCutFinished method, the futures check works correctly in sync mode since they're never started, so the condition passes through. Tracing through the complex section flow on wasm when the GUI isn't up: DrawViewSection::sectionExec immediately creates the section cut, marks it as not waiting, and triggers the finished callback before returning.

The makeSectionCut override handles aligned sections by running the alignment synchronously on wasm instead of using QtConcurrent, then delegates to the parent class implementation. This ensures the flow continues properly through onSectionCutFinished, which skips the disconnect when the GUI is down and proceeds directly to the HL  …
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw/App && sed -n '466,478p' DrawViewSection.cpp; echo \"=== detail 185-210 ===\"; sed -n '185,210p' DrawViewDetail.cpp", "description": "Confirm section sync path returns and detail flow"}
tool result
    m_cuttingTool = makeCuttingTool(m_shapeSize);

    if (!DU::isGuiUp()) {
        // without the gui we will never be informed of completion of the separate thread
        makeSectionCut(baseShape);
        waitingForCut(false);
        onSectionCutFinished();
        return;
    }

    try {
        // note that &m_cutWatcher in the third parameter is not strictly required,
        // but using the 4 parameter signature instead of the 3 parameter signature
=== detail 185-210 ===
        retu  …[truncated]
Fable
thinking
I've found the bug: DrawViewDetail::detailExec doesn't return after the synchronous path completes, so it falls through and also starts the QtConcurrent thread. On wasm with isGuiUp=false, this means the code runs both synchronously and asynchronously. The fix is to add a return statement after the sync block finishes.

This also fixes a wasteful double-execution in console mode where the sync path completes but then the thread also runs makeDetailShape again (though the finished callback never fires since there's no event loop). Adding the return prevents both issues.

Now I need to verify the CMakeLists changes for TechDrawLIBS—removing PartDesign and handling the Import dependency in AppT  …
Fable
⚙ Bash {"command": "cd src/Mod/Import && echo \"=== Import App source deps (external) ===\"; grep -rnE \"find_package|_LIBRARIES|pybind|opendcm|SMESH|Netgen|E57|gts\" CMakeLists.txt App/CMakeLists.txt Gui/CMakeLists.txt 2>/dev/null | grep -ivE \"g…
tool result
=== Import App source deps (external) ===
App/CMakeLists.txt:5:    ${OCC_OCAF_LIBRARIES}
App/CMakeLists.txt:6:    ${OCC_OCAF_DEBUG_LIBRARIES}
Gui/CMakeLists.txt:7:    ${OCC_OCAF_LIBRARIES}
Gui/CMakeLists.txt:8:    ${OCC_OCAF_DEBUG_LIBRARIES}
=== Import Gui hazards ===
=== Import subdirs ===
AppImport.cpp
AppImportPy.cpp
CMakeLists.txt
ExportOCAF.cpp
ExportOCAF.h
ExportOCAF2.cpp
ExportOCAF2.h
ImportOCAF.cpp
ImportOCAF.h
ImportOCAF2.cpp
=== does Import App CMake use BUILD_IMPORT flag deps? ===
Fable
thinking
The Import module looks safe to enable since it only depends on OCC OCAF without threading or external dependencies, and it handles STEP/IGES/DXF formats. The main question is whether the Import GUI adds any problematic modal dialogs or other issues—for TechDraw I really only need the App library's DXF writing functionality, but enabling BUILD_IMPORT will also build and register the GUI components.

I'm weighing two approaches: Option A enables BUILD_IMPORT fully (adds a bit to the binary but keeps DXF export working), while Option B guards the DXF code and skips Import entirely (smaller binary but loses that feature). Since DXF export is useful and Import is cheap to build, Option A seems b  …
Fable
⚙ Bash {"command": "cd src/Mod/Import && grep -rnE \"PyMOD_INIT_FUNC|initImport\" App/AppImport.cpp Gui/AppImportGui.cpp 2>/dev/null | head; echo \"=== Init.py / InitGui.py for Import (python-side deps) ===\"; grep -nE \"PySide|import\" Init.py 2>…
tool result
Gui/AppImportGui.cpp:44:PyMOD_INIT_FUNC(ImportGui)
App/AppImport.cpp:39:PyMOD_INIT_FUNC(Import)
=== Init.py / InitGui.py for Import (python-side deps) ===
29:import FreeCAD
=== TechDraw needs 'import Import' at py runtime? ===
Fable
thinking
TechDraw's Python doesn't need to import the Import module, so that registration is only necessary if someone actually uses the Import workbench. For the DXF export functionality in C++, I just need to link against the Import App static library. I'll add Import and ImportGui to the initialization table for good measure, but the linking is what really matters. Let me verify that the Gui CMakeLists properly inherits Qt Svg linking from FreeCADGui.

Now I'm realizing there's a critical runtime consideration: TechDraw loads template files (SVG), pattern files, and symbol data from the Mod directory at runtime. In a WebAssembly environment where the filesystem is memory-based, I need to make sure  …
Fable
⚙ Bash {"command": "cd src/Mod/TechDraw && echo \"=== data install (templates etc) ===\"; grep -nE \"INSTALL|install\\(|Templates|Symbols|Patterns|CSVdata|PAT|LineGroup\" CMakeLists.txt | head -30", "description": "Check TechDraw data install (tem…
tool result
=== data install (templates etc) ===
44:SET(TechDraw_PATFile
45:    PAT/FCPAT.pat
49:    CSVdata/FillTemplateFields.csv
52:SET(TechDraw_LineGroupFile
53:    LineGroup/ANSI.Y14.2M.1992.ElementDef.csv
54:    LineGroup/ANSI.Y14.2M.1992.LineDef.csv
55:    LineGroup/ASME.Y14.2.2008.ElementDef.csv
56:    LineGroup/ASME.Y14.2.2008.LineDef.csv
57:    LineGroup/ISO.128.20.1996.ElementDef.csv
58:    LineGroup/ISO.128.20.1996.LineDef.csv
59:    LineGroup/LineGroup.csv
63:SOURCES ${TechDraw_Scripts} ${TechD  …[truncated]
Fable
thinking
TechDraw's data files—templates, patterns, line groups, and symbols—need to be included in the preloaded filesystem for the wasm build, similar to how Part, Sketcher, and Material already handle their resource directories. The existing packaging mechanism just needs to be extended to incorporate TechDraw's Mod/TechDraw data directory.
Fable
⚙ Bash {"command": "grep -rnE \"preload-file|preload|--embed-file|file_packager|MEMFS|IDBFS|packageData|CMAKE_INSTALL_DATADIR|resource\" /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Main/CMakeLists.txt | head -20; echo \"=== search for packagi…
tool result
=== search for packaging script ===
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/tools/profile/perftest.sh
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/package/rattler-build/build.sh
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/package/ubuntu/install-apt-packages.sh
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/App/ExpressionParser.sh
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Base/Parser.sh
00-OVERVIEW.md
LibreCAD
aqtinstall.log
boot-test.mjs
boot-test2.mjs
bootshot.mjs
boxrender.mjs
b  …[truncated]
Fable
thinking
I'm digging into the build infrastructure to understand how the data directory gets bundled into the wasm module, particularly looking at deployment configuration and resource packaging strategies like preload directives in linker options or deploy scripts.
Fable
⚙ Bash {"command": "cd /home/magik6k/lcad-wasm && grep -rlE \"preload|file_packager|\\.data|MEMFS|install.*Mod\" check-deploy.sh package.json 2>/dev/null; echo \"=== main link opts in Main CMakeLists ===\"; sed -n '80,130p' /home/magik6k/lcad-wasm…
tool result
=== main link opts in Main CMakeLists ===
=== deploy dir contents ===
app.html
app.html.br
app.html.gz
i18n
index.html
index.html.br
index.html.gz
librecad-logo.svg
librecad-logo.svg.gz
librecad.data
=== .data files ===
-rw-r--r-- 1 agent agent 30131103 Jul  1 22:16 /home/magik6k/lcad-wasm/deploy/librecad.data
Fable
thinking
I'm realizing the deploy directory is set up for LibreCAD in a shared workspace, so FreeCAD's WASM resources must be packaged differently. The FreeCAD.wasm file itself is quite large at around 180MB, but I need to figure out how the resource data like TechDraw templates gets preloaded alongside it—likely through some build configuration or file bundling mechanism in the freecad-port build directory.
Fable
⚙ Bash {"command": "grep -rlE \"preload-file|file_packager|--preload\" /opt/toolchains/src/freecad-gui-build/src/Main/ 2>/dev/null | head; echo \"=== link.txt preload ===\"; find /opt/toolchains/src/freecad-gui-build -name \"link.txt\" -path \"*Ma…
tool result
=== link.txt preload ===
=== search any preload in build ===
preload-file
Fable
⚙ Bash {"command": "grep -rn \"preload-file\" /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Main/CMakeLists.txt /home/magik6k/lcad-wasm/freecad-port/FreeCAD/CMakeLists.txt 2>/dev/null | head; echo \"=== broader ===\"; grep -rln \"preload-file\"…
tool result
=== broader ===
=== how data dir referenced ===
Fable
thinking
The preload-file setup happens outside the CMake build through an external deployment script using emscripten's file_packager tool on the installed files. Since this isn't TechDraw-specific and I can't quickly locate it in the source, I'll make sure the plan accounts for including TechDraw's data directories (Templates, PAT, Symbols, LineGroup, CSVdata) in whatever packaging mechanism handles the FreeCAD resource directory — the same way Part/Material resources are bundled.

This is a deployment verification step rather than a code change. I've confirmed the build configuration: QtConcurrent links fine in the App CMakeLists, and the runtime hang is purely a synchronization issue that our rou  …
Fable
⚙ Bash {"command": "grep -rn \"FC_OS_WASM\" /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/App/Application.cpp /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Base/*.h 2>/dev/null | head -3; echo \"=== FC_OS_WASM define location ===\"; grep -rl…
tool result
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/App/Application.cpp:418:#ifndef FC_OS_WASM
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/App/Application.cpp:433:#ifdef FC_OS_WASM
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/App/Application.cpp:874:#ifdef FC_OS_WASM
=== FC_OS_WASM define location ===
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/FCConfig.h
Fable
thinking
FC_OS_WASM is defined in FCConfig.h and gets pulled in through the include chain that DrawUtil.cpp uses via PreCompiled headers, so the macro should already be accessible. I'm verifying that the necessary includes are in place to ensure DrawUtil.cpp can see the definition.

Now I'm gathering the exact code snippets I need for the patches — the current isGuiUp function, the CMakeLists configuration sections, and the specific lines in DimensionReferences.cpp that need updating. I have the key pieces: the isGuiUp implementation, the TechDrawLIBS list, the PartDesign includes, and the sections in DrawViewDetail and DrawComplexSection that need modification. I'm ready to write out the comprehensi  …
Fable
I have all the information I need. Let me create the plan directory and write the deliverables.
Fable
⚙ Bash {"command": "mkdir -p /home/magik6k/lcad-wasm/porting/techdraw && echo created", "description": "Create porting/techdraw directory"}
tool result
created
Fable
thinking
Now I'm putting together the comprehensive plan document and creating the necessary patch files.
Fable
⚙ Write {"file_path": "/home/magik6k/lcad-wasm/porting/techdraw/plan.md", "content": "# TechDraw → WebAssembly port plan\n\nSlug: `techdraw`\nTarget tree: `/home/magik6k/lcad-wasm/freecad-port/FreeCAD` (branch `wasm-port`)\nBuild dir: `/opt/toolcha…
tool result
File created successfully at: /home/magik6k/lcad-wasm/porting/techdraw/plan.md (file state is current in your context — no need to Read it back)
Fable
Now let me create the patch files.
Fable
⚙ Bash {"command": "mkdir -p /home/magik6k/lcad-wasm/porting/techdraw/patches && cat > /home/magik6k/lcad-wasm/porting/techdraw/patches/0001-techdraw-app-cmake-drop-partdesign.patch <<'EOF'\n--- a/src/Mod/TechDraw/App/CMakeLists.txt\n+++ b/src/Mod…
tool result
0001,0002 written
Fable
thinking
I need to verify the exact line numbers in the DimensionReferences.cpp file to ensure the patch applies correctly.
Fable
⚙ Bash {"command": "cd /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App && sed -n '36,42p' DimensionReferences.cpp", "description": "Get exact context around PartDesign includes"}
tool result
#include <Mod/Measure/App/ShapeFinder.h>
#include <Mod/Part/App/TopoShape.h>
#include <Mod/PartDesign/App/Body.h>
#include <Mod/PartDesign/App/Feature.h>

#include "DimensionReferences.h"
Fable
⚙ Bash {"command": "cat > /home/magik6k/lcad-wasm/porting/techdraw/patches/0002-dimensionreferences-drop-partdesign-includes.patch <<'EOF'\n--- a/src/Mod/TechDraw/App/DimensionReferences.cpp\n+++ b/src/Mod/TechDraw/App/DimensionReferences.cpp\n@@ …
tool result
0002,0003,0004 written
Fable
⚙ Bash {"command": "cat > /home/magik6k/lcad-wasm/porting/techdraw/patches/0005-drawcomplexsection-sync-wasm.patch <<'EOF'\n--- a/src/Mod/TechDraw/App/DrawComplexSection.cpp\n+++ b/src/Mod/TechDraw/App/DrawComplexSection.cpp\n@@ -254,10 +254,25 @@…
tool result
0005,0006 written
Fable
thinking
I'm checking the CMakeLists.txt file to confirm the BUILD_MEASURE conditional block that adds the Measure and MeasureGui modules to the WASM Python modules list.

Now I need to write out the optional patches for the printing guard and the AppTechDrawPy option, along with a README explaining the patch set. Let me pull the exact context from MDIViewPage for the printing functionality and AppTechDrawPy to make sure the patch anchors are accurate.
Fable
⚙ Bash {"command": "cd /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/Gui && sed -n '354,400p' MDIViewPage.cpp", "description": "Read MDIViewPage printing methods for guard patch"}
tool result
void MDIViewPage::printPdf()
{
    exportAsPdf();
}

void MDIViewPage::print()
{
    auto pageAttr = PagePrinter::getPaperAttributes(getViewProviderPage());

    QPrinter printer(QPrinter::HighResolution);
    printer.setFullPage(true);
    if (pageAttr.pageSizeId() == QPageSize::Custom) {
        printer.setPageSize(
            QPageSize(QSizeF(pageAttr.pageWidth(), pageAttr.pageHeight()), QPageSize::Millimeter));
    }
    else {
        printer.setPageSize(QPageSize(pageAttr.  …[truncated]
Fable
thinking
I see that `printPdf()` works fine since it relies on `exportAsPdf()` with QPdfWriter, but `print()` and `printPreview()` are broken on wasm because they depend on QPrintDialog and QPrintPreviewDialog. I'll create optional guard patches to make these functions no-op or warn on wasm, and also prepare guidance for handling DXF export similarly.
Fable
⚙ Bash {"command": "cat > /home/magik6k/lcad-wasm/porting/techdraw/patches/0007-optional-guard-printing.patch <<'EOF'\n# OPTIONAL (§5c). QPrintDialog / QPrintPreviewDialog have no browser backend and\n# are modal -> dead on wasm. QPdfWriter-base…
tool result
0007,0009 written
0001-techdraw-app-cmake-drop-partdesign.patch
0002-dimensionreferences-drop-partdesign-includes.patch
0003-drawutil-isguiup-wasm-false.patch
0004-drawviewdetail-return-fix.patch
0005-drawcomplexsection-sync-wasm.patch
0006-main-cmake-inittab-techdraw-import.patch
0007-optional-guard-printing.patch
0009-optB-guard-dxf-import.patch
Fable
thinking
I should write a README for the patches directory and then verify the patches apply cleanly using git apply --check. First, let me check whether the working directory is actually a git repository, since the environment indicated it's not, though the FreeCAD subtree is on the wasm-port branch.
Fable
⚙ Bash {"command": "git rev-parse --is-inside-work-tree 2>&1 | head -1; echo \"=== dry-run apply core patches ===\"; for p in 0001 0002 0003 0004 0005 0006; do f=$(ls /home/magik6k/lcad-wasm/porting/techdraw/patches/${p}*.patch); git apply --check…
tool result
true
=== dry-run apply core patches ===
error: corrupt patch at line 13
0001 FAILED
error: corrupt patch at line 10
0002 FAILED
error: corrupt patch at line 17
0003 FAILED
0004 OK
error: corrupt patch at line 48
0005 FAILED
0006 OK
Fable
thinking
I'm realizing the patch hunk headers have incorrect line counts, so I need to regenerate them properly. The best approach is to apply the edits directly using the Edit tool, capture the actual diffs with git diff, save those patches, then revert the changes to restore the original state. This guarantees the context and counts will be accurate.
Fable
Let me generate correct patches by applying the real edits and using git diff.
Fable
⚙ Read {"file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/CMakeLists.txt", "limit": 10}
tool result
1	set(TechDrawLIBS
2	    Measure
3	    Part
4	    Spreadsheet
5	    PartDesign
6	)
7	
8	if (BUILD_IMPORT)
9	    list(APPEND TechDrawLIBS Import)
10	endif ()
Fable
⚙ Read {"file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/DrawUtil.cpp", "offset": 1869, "limit": 8}
tool result
1869	
1870	//! returns true if the Gui module and its event loop are active.
1871	bool DrawUtil::isGuiUp()
1872	{
1873	    auto* app = QCoreApplication::instance();
1874	    return (app != nullptr) && app->inherits("QApplication");
1875	}
1876
Fable
⚙ Edit {"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/CMakeLists.txt", "old_string": "set(TechDrawLIBS\n Measure\n Part\n Spreadsheet\n PartDesign\n)", "new_string": "set(TechDraw…
tool result
The file /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/CMakeLists.txt has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
⚙ Edit {"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/DrawUtil.cpp", "old_string": "bool DrawUtil::isGuiUp()\n{\n auto* app = QCoreApplication::instance();\n return (app != nullptr) && …
tool result
The file /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/DrawUtil.cpp has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
⚙ Edit {"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/DimensionReferences.cpp", "old_string": "#include <Mod/Part/App/TopoShape.h>\n#include <Mod/PartDesign/App/Body.h>\n#include <Mod/PartDes…
tool result
The file /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/DimensionReferences.cpp has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
⚙ Read {"file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/DrawViewDetail.cpp", "offset": 186, "limit": 10}
tool result
186	    }
187	
188	    if (!DU::isGuiUp()) {
189	        makeDetailShape(shape, dvp, dvs);
190	        onMakeDetailFinished();
191	        waitingForDetail(false);
192	    }
193	
194	    //note that &m_detailWatcher in the third parameter is not strictly required, but using the
195	    //4 parameter signature instead of the 3 parameter signature prevents clazy warning:
Fable
⚙ Edit {"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/DrawViewDetail.cpp", "old_string": " if (!DU::isGuiUp()) {\n makeDetailShape(shape, dvp, dvs);\n onMakeDetailFinished();…
tool result
The file /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/DrawViewDetail.cpp has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
⚙ Read {"file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/DrawComplexSection.cpp", "offset": 254, "limit": 28}
tool result
254	void DrawComplexSection::makeSectionCut(const TopoDS_Shape& baseShape)
255	{
256	    if (ProjectionStrategy.getValue() == 0) {
257	        //Offset. Use regular section behaviour
258	        return DrawViewSection::makeSectionCut(baseShape);
259	    }
260	
261	    try {
262	        connectAlignWatcher =
263	            QObject::connect(&m_alignWatcher, &QFutureWatcherBase::finished, &m_alignWatcher,
264	                             [this] { this->onSectionCutFinished(); });
265	
266	          …[truncated]
Fable
⚙ Edit {"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/DrawComplexSection.cpp", "old_string": " if (ProjectionStrategy.getValue() == 0) {\n //Offset. Use regular section behaviour\n …
tool result
The file /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/DrawComplexSection.cpp has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
⚙ Edit {"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/DrawComplexSection.cpp", "old_string": " catch (...) {\n Base::Console().warning(\"%s failed to make alignedPieces\\n\", Label.…
tool result
The file /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/TechDraw/App/DrawComplexSection.cpp has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
Now the Main CMakeLists inittab edit.
Fable
⚙ Read {"file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Main/CMakeLists.txt", "offset": 33, "limit": 10}
tool result
33	    if(BUILD_MEASURE)
34	        list(APPEND FREECAD_WASM_PY_MODULES Measure)
35	        list(APPEND FREECAD_WASM_PY_GUI_MODULES MeasureGui)
36	    endif()
37	    if(BUILD_START)
38	        list(APPEND FREECAD_WASM_PY_GUI_MODULES StartGui)
39	    endif()
40	    if(NOT BUILD_GUI)
41	        set(FREECAD_WASM_PY_GUI_MODULES "")
42	    endif()
Fable
⚙ Edit {"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Main/CMakeLists.txt", "old_string": " if(BUILD_MEASURE)\n list(APPEND FREECAD_WASM_PY_MODULES Measure)\n list(APPEND FREECAD_WASM_PY_GUI_…
tool result
The file /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Main/CMakeLists.txt has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
Now generate correct patches via git diff and revert the working tree.
Fable
⚙ Bash {"command": "cd /home/magik6k/lcad-wasm/freecad-port/FreeCAD\nD=/home/magik6k/lcad-wasm/porting/techdraw/patches\ngit diff -- src/Mod/TechDraw/App/CMakeLists.txt > $D/0001-techdraw-app-cmake-drop-partdesign.patch\ngit diff -- src/Mod/TechDr…
tool result
=== sizes ===
  12 /home/magik6k/lcad-wasm/porting/techdraw/patches/0001-techdraw-app-cmake-drop-partdesign.patch
  13 /home/magik6k/lcad-wasm/porting/techdraw/patches/0002-dimensionreferences-drop-partdesign-includes.patch
  21 /home/magik6k/lcad-wasm/porting/techdraw/patches/0003-drawutil-isguiup-wasm-false.patch
  15 /home/magik6k/lcad-wasm/porting/techdraw/patches/0004-drawviewdetail-return-fix.patch
  35 /home/magik6k/lcad-wasm/porting/techdraw/patches/0005-drawcomplexsection-sync-wasm.patc  …[truncated]
Fable
thinking
I'll verify the patches apply cleanly by reverting the working tree and doing a dry-run, then keeping it reverted to leave things clean since the patches are the deliverable.
Fable
⚙ Bash {"command": "cd /home/magik6k/lcad-wasm/freecad-port/FreeCAD\ngit checkout -- src/Mod/TechDraw/App/CMakeLists.txt src/Mod/TechDraw/App/DimensionReferences.cpp src/Mod/TechDraw/App/DrawUtil.cpp src/Mod/TechDraw/App/DrawViewDetail.cpp src/Mod…
tool result
=== dry-run apply all core patches ===
0001 OK
0002 OK
0003 OK
0004 OK
0005 OK
0006 OK
=== tree clean? ===
Fable
thinking
The patches all applied cleanly in dry-run mode, and I've reverted the working tree back to its original state to verify everything's in order. Now I'll write a README for the patches directory and make sure the git status is clean before wrapping up.
Fable
All 6 patches apply cleanly and the tree is reverted. Let me add a README for the patches directory.
Fable
⚙ Write {"file_path": "/home/magik6k/lcad-wasm/porting/techdraw/patches/README.md", "content": "# TechDraw wasm patches\n\nApply from the repo root `/home/magik6k/lcad-wasm/freecad-port/FreeCAD`:\n\n```bash\ncd /home/magik6k/lcad-wasm/freecad-port/…
tool result
File created successfully at: /home/magik6k/lcad-wasm/porting/techdraw/patches/README.md (file state is current in your context — no need to Read it back)
Fable
⚙ Bash {"command": "cd /home/magik6k/lcad-wasm/freecad-port/FreeCAD; echo \"=== tree status (should be clean) ===\"; git status --porcelain src/Mod/TechDraw src/Main src/Mod/Measure src/Mod/Spreadsheet | head; echo \"=== deliverables ===\"; ls -la…
tool result
=== tree status (should be clean) ===
=== deliverables ===
/home/magik6k/lcad-wasm/porting/techdraw:
total 28
drwxr-xr-x 1 agent agent    28 Jul  5 11:13 .
drwxr-xr-x 1 agent agent   370 Jul  5 11:10 ..
drwxr-xr-x 1 agent agent   666 Jul  5 11:16 patches
-rw-r--r-- 1 agent agent 25902 Jul  5 11:13 plan.md

/home/magik6k/lcad-wasm/porting/techdraw/patches:
total 36
drwxr-xr-x 1 agent agent  666 Jul  5 11:16 .
drwxr-xr-x 1 agent agent   28 Jul  5 11:13 ..
-rw-r--r-- 1 agent agent  320 Jul  5 11:16  …[truncated]
Fable
All deliverables are written and the working tree is clean. Now I'll return the structured summary.
Fable
⚙ StructuredOutput {"skill": "", "slug": "techdraw", "title": "TechDraw (+ Qt SVG / QtConcurrent) wasm port", "feasibility": "needs-code", "oneLineVerdict": "Buildable with 6 small patches + 4 CMake flags; Qt SVG already ships in the wasm Qt build, libarea is…
tool result
Output does not match required schema: root: must NOT have additional properties
Fable
thinking
I see the issue — I included an extra "skill" property that isn't defined in the schema, so I need to remove it and retry the call.
Fable
⚙ StructuredOutput {"slug": "techdraw", "title": "TechDraw (+ Qt SVG / QtConcurrent) wasm port", "feasibility": "needs-code", "oneLineVerdict": "Buildable with 6 small patches + 4 CMake flags; Qt SVG already ships in the wasm Qt build, libarea is a non-depend…
tool result
Structured output provided successfully