c1ef489cfa
Replace the legacy Emscripten JS-exceptions model with native wasm-EH (legacy encoding) across the whole build, keeping Asyncify coroutines working via a from-source Binaryen --hoist-cpp-catches pre-pass. Net result: native-EH is the only build mode, the 3D viewer is on by default, and pcbnew shrinks substantially. Highlights: - Binaryen submodule everywhere + --hoist-cpp-catches integration in apply-asyncify; post-link Asyncify covers every app wasm (not just standalone test wasm). - Build deps (incl. OpenCASCADE without OCC_CONVERT_SIGNALS) and all KiCad apps with -fwasm-exceptions; emscripten_sleep added to the post-link asyncify-imports. - libcontext fiber entry wired under native exceptions; while-loop main loop + currData shim injected into all wx apps. - Native-EH collab apply fixed: DEBUG-define the embind TU + match all out-of-CMake C++ TUs' ABI flags to the core, fixing the vtable-layout skew / mis-dispatch. - 3D viewer enabled by default (real raytracer linked, not the stub). - Retire the EH-spike scaffolding; flip the asyncify-races ablation pins to shim-redundancy pins (native-EH stays clean with the legacy shims ablated). - Fix the asyncify-races quiescence check to not require Asyncify.currData==0: under the native-EH per-frame-yield top loop the main stack is asyncify-suspended every frame, so currData legitimately churns (a freed-but-not-yet-nulled buffer, not a leak). Refresh the pcbnew toolbar screenshot baseline for the new kicad. - CI: drop the obsolete binaryen_version input/env (the build uses the binaryen submodule fork's wasm-opt, not a version download); key the wasm-output cache on the binaryen submodule SHA instead. Bumps the wxwidgets + binaryen submodules to their squashed feature commits. Validated green: all 7 apps native-EH (real 3D in pcbnew); KiCad e2e 63/63 Firefox + Chromium (3D viewer renders); wx 336; coroutine 34/34 both engines; asyncify 7/7 both engines. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
113 lines
4.2 KiB
Shell
Executable file
113 lines
4.2 KiB
Shell
Executable file
#!/bin/bash
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# Build OpenCASCADE Technology (OCCT) for WebAssembly
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# OCCT provides 3D geometry kernel for STEP file import/export
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set -e
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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source "${SCRIPT_DIR}/../common/env.sh"
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source "${SCRIPT_DIR}/../common/versions.sh"
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source "${SCRIPT_DIR}/../common/functions.sh"
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OCC_DIR="${DEPS_ROOT}/opencascade-${OCC_VERSION}"
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OCC_BUILD="${BUILD_ROOT}/deps/opencascade"
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OCC_STAMP="${BUILD_ROOT}/stamps/opencascade.stamp"
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# Parse arguments
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CLEAN=0
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for arg in "$@"; do
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case $arg in
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--clean)
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CLEAN=1
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shift
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;;
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esac
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done
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if [ $CLEAN -eq 1 ]; then
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log_info "Cleaning OpenCASCADE build..."
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rm -rf "${OCC_BUILD}" "${OCC_STAMP}"
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fi
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# Check if already built
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if check_stamp "${OCC_STAMP}"; then
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log_info "OpenCASCADE already built, skipping..."
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exit 0
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fi
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# Download if needed
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if [ ! -d "${OCC_DIR}" ]; then
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log_info "Downloading OpenCASCADE ${OCC_VERSION}..."
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mkdir -p "${DEPS_ROOT}"
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cd "${DEPS_ROOT}"
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# OpenCASCADE releases are on GitHub
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OCC_URL="https://github.com/Open-Cascade-SAS/OCCT/archive/refs/tags/V${OCC_VERSION//./_}.tar.gz"
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download_file "${OCC_URL}" "opencascade-${OCC_VERSION}.tar.gz"
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tar -xzf "opencascade-${OCC_VERSION}.tar.gz"
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# Directory name in tarball is OCCT-7_8_0 (without V prefix)
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mv "OCCT-${OCC_VERSION//./_}" "opencascade-${OCC_VERSION}"
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rm "opencascade-${OCC_VERSION}.tar.gz"
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fi
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log_info "Building OpenCASCADE ${OCC_VERSION} for WASM..."
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log_warn "This is a large library and may take a while..."
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mkdir -p "${OCC_BUILD}"
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cd "${OCC_BUILD}"
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# OpenCASCADE build configuration for WASM
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# Disable GUI, visualization that needs X11/OpenGL native
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# Enable core geometry and data exchange modules only
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#
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# OCC's CMake unconditionally adds -DOCC_CONVERT_SIGNALS (occt_defs_flags.cmake), which turns the
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# OCC_CATCH_SIGNALS macro into setjmp(handler.Label()). The STEP read/write code
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# (STEPControl_Reader/ActorRead, ...) uses OCC_CATCH_SIGNALS pervasively. Under -fwasm-exceptions that
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# setjmp is lowered (emscripten's LowerEmscriptenEHSjLj) into a wasm-SjLj state-machine br_table whose
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# branch targets are inconsistently typed -> INVALID wasm that V8, wabt AND Binaryen all reject (this
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# is the "popping from empty stack" / br_table type-mismatch that blocks pcbnew's OCC link). WASM has
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# no POSIX signals, so OCC_CONVERT_SIGNALS (signal->exception conversion) is meaningless here anyway;
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# OCC's normal C++ Standard_Failure throw/catch is unaffected. Disabling it means OCC_CATCH_SIGNALS
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# expands to nothing (clang) -> no setjmp -> no wasm-SjLj -> valid native-EH wasm.
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_occ_defs="${OCC_DIR}/adm/cmake/occt_defs_flags.cmake"
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if grep -q '^[[:space:]]*add_definitions(-DOCC_CONVERT_SIGNALS)' "${_occ_defs}" 2>/dev/null; then
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sed -i 's|add_definitions(-DOCC_CONVERT_SIGNALS)|# add_definitions(-DOCC_CONVERT_SIGNALS) # disabled for native wasm-EH by build-opencascade.sh (no POSIX signals in WASM; setjmp breaks -fwasm-exceptions)|' "${_occ_defs}"
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log_info "Disabled OCC_CONVERT_SIGNALS for native wasm-EH (avoids invalid wasm-SjLj br_table)"
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fi
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emcmake cmake "${OCC_DIR}" \
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-DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
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-DCMAKE_BUILD_TYPE=${BUILD_TYPE:-Debug} \
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-DCMAKE_INSTALL_PREFIX="${SYSROOT}" \
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-DCMAKE_CXX_FLAGS="${DEBUG_CFLAGS:--g -O0} -pthread -matomics -mbulk-memory ${DEPS_EH_FLAGS}" \
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-DCMAKE_C_FLAGS="${DEBUG_CFLAGS:--g -O0} -pthread -matomics -mbulk-memory ${DEPS_EH_FLAGS}" \
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-DBUILD_LIBRARY_TYPE=Static \
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-DBUILD_MODULE_ApplicationFramework=OFF \
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-DBUILD_MODULE_Draw=OFF \
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-DBUILD_MODULE_Visualization=OFF \
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-DBUILD_MODULE_DETools=OFF \
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-DBUILD_MODULE_FoundationClasses=ON \
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-DBUILD_MODULE_ModelingData=ON \
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-DBUILD_MODULE_ModelingAlgorithms=ON \
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-DBUILD_MODULE_DataExchange=ON \
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-DUSE_FREETYPE=OFF \
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-DUSE_FREEIMAGE=OFF \
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-DUSE_OPENVR=OFF \
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-DUSE_FFMPEG=OFF \
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-DUSE_TBB=OFF \
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-DUSE_VTK=OFF \
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-DUSE_TCL=OFF \
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-DUSE_TK=OFF \
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-DUSE_GLES2=OFF \
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-DUSE_OPENGL=OFF \
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-DUSE_D3D=OFF \
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-DUSE_RAPIDJSON=OFF \
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-DUSE_DRACO=OFF \
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-DBUILD_DOC_Overview=OFF \
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-DINSTALL_SAMPLES=OFF \
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-DINSTALL_TEST_CASES=OFF
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emmake make -j${JOBS}
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emmake make install
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create_stamp "${OCC_STAMP}"
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log_info "OpenCASCADE build complete!"
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