stroblme
6139852768
Builds n3xd-ocp end to end and publishes 7.9.3.1.dev1 to the Gitea registry, where it installs anonymously and passes its suite. - occt/Dockerfile: OCCT 7.9.3 compiled once into a manylinux_2_28 builder image (base digest + tarball sha256 pinned), Draw/VTK/Tk/Xlib/OpenGL off, FreeType on, -O2 without fast-math or march=native. A final layer asserts TKService/TKV3d exist with no libGL/libX11 DT_NEEDED, which is what lets the app image drop libgl1/libx11-6. Mounted into, never built FROM. - scikit-build-core + nanobind STABLE_ABI -> one cp312-abi3 extension that registers every OCP.* submodule via PyImport_AddModule, so `import OCP.TopoDS` needs no shim and cls.__module__ is right. Version <occt>.N is asserted against the OCCT found, keeping occt_version() truthful. - occt_handle.h: type caster for opencascade::handle<T> over OCCT's intrusive refcount. Wrappers are non-owning instances holding exactly one handle in their keep-alive list, reusing an existing wrapper so identity survives a round trip. Transient constructors go through ocp_new (never nb::init<>, which would let OCCT delete nanobind's storage); the caster refuses a refcount-0 object rather than corrupt the heap. Verified under ASAN with no memory-safety errors, plus an RSS bound over 50k create/destroy cycles. - Sub-shapes are returned by value everywhere, making the TShape lifetime class that segfaulted a process-global face memo unrepresentable. - Standard_Failure derives RuntimeError, with ~20 concrete types dispatched on the dynamic OCCT type (cad_pool marshals failures home by type name). - Inc 0 surface: gp subset, TopAbs, TopoDS (+ downcasts), TopExp, TopLoc, TopTools, BRep, BinTools, Poly, Standard. 34 of the app's 139 symbols. - n3xd_ocp: additive APIs kept out of the OCP namespace so parity testing stays meaningful. bintools (shape <-> bytes, GIL-free, byte-identical) and _debug. Two findings worth the record, both verified against the stock wheel rather than assumed: upstream binds __hash__ but leaves __eq__ at identity, which is exactly what geom_memo.py's hash-bucket + IsSame scan is built around, so we match it instead of "fixing" it; and BinTools can release the GIL after all, by slurping the file-like object instead of bridging a streambuf that would call back into Python. Gate: BREP round-trips are byte-identical to cadquery-ocp-novtk across six fixtures (the generator asserts stock idempotency first). That matters beyond IPC — derive.py content-addresses BREP payloads by sha256 and stores the ref.
65 lines
2.0 KiB
CMake
65 lines
2.0 KiB
CMake
cmake_minimum_required(VERSION 3.20)
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project(n3xd_ocp LANGUAGES CXX)
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set(CMAKE_CXX_STANDARD 17)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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if(NOT CMAKE_BUILD_TYPE)
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set(CMAKE_BUILD_TYPE Release)
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endif()
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# Match the kernel's flags: -O2, no fast-math, no -march=native. OCCT's
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# version is a determinism input for assay's committed goldens, so the binding
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# has no business introducing a different FP contract than the kernel it wraps.
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set(CMAKE_CXX_FLAGS_RELEASE "-O2 -DNDEBUG")
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find_package(Python 3.12 REQUIRED
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COMPONENTS Interpreter Development.Module Development.SABIModule)
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find_package(nanobind CONFIG REQUIRED)
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find_package(OpenCASCADE REQUIRED)
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# The version scheme is enforced, not merely conventional: a wheel labelled
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# 7.9.3.N must actually wrap OCCT 7.9.3.
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set(_occt_ver "${OpenCASCADE_MAJOR_VERSION}.${OpenCASCADE_MINOR_VERSION}.${OpenCASCADE_MAINTENANCE_VERSION}")
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if(DEFINED SKBUILD_PROJECT_VERSION)
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if(NOT SKBUILD_PROJECT_VERSION MATCHES "^${_occt_ver}\\.")
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message(FATAL_ERROR
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"Version '${SKBUILD_PROJECT_VERSION}' does not match the OCCT found "
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"(${_occt_ver}). The scheme is <occt-version>.N — see pyproject.toml.")
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endif()
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endif()
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message(STATUS "Building n3xd-ocp against OCCT ${_occt_ver}")
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file(GLOB OCP_MODULE_SOURCES CONFIGURE_DEPENDS "src/modules/*.cpp")
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file(GLOB OCP_EXT_SOURCES CONFIGURE_DEPENDS "src/ext/*.cpp")
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nanobind_add_module(_OCP
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STABLE_ABI
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NB_STATIC
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src/core.cpp
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src/common/occt_module.cpp
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src/common/occt_exceptions.cpp
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${OCP_MODULE_SOURCES}
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${OCP_EXT_SOURCES}
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)
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target_include_directories(_OCP PRIVATE ${OpenCASCADE_INCLUDE_DIR})
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# Only the toolkits the bound surface actually reaches. Grows with each
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# coverage increment; auditwheel bundles whatever the linker records.
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target_link_libraries(_OCP PRIVATE
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TKernel
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TKMath
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TKG2d
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TKG3d
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TKGeomBase
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TKBRep
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TKTopAlgo
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)
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target_compile_definitions(_OCP PRIVATE
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N3XD_OCP_VERSION="${SKBUILD_PROJECT_VERSION}"
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)
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install(TARGETS _OCP LIBRARY DESTINATION OCP)
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