Files
ocp/CMakeLists.txt
stroblme 01a5bcf188 10C Inc 3 + 4: I/O and text — the app's whole OCP surface is bound
138/138 symbols across 53 modules. New: IFSelect, Interface, XSControl,
IGESData, STEPControl, IGESControl, RWStl, Graphic3d, NCollection, StdPrs.

**The full app suite passes against this wheel: 1797 passed, 1 skipped — the
same result as the stock wheel**, run from the parity venv.

Getting there needed six methods that no static analysis could have found:
`inventory --check` only sees symbols reached through an import, so a method
called on an instance is invisible to it. The suite found them in one pass, and
one of them (gp_Vec.Reverse, which every outward-normal probe calls) accounted
for 311 of the 255 failing tests on its own. The others: gp_Trsf.SetMirror over
a plane and a point, Geom_Surface.D0, BRep_Builder.MakeFace from a
triangulation, MakePipeShell.SetMode with a fixed binormal, and MakeFace from a
surface plus tolerance.

Open question **S5 is settled: no**. The wheel does not need OCCT's share/
resources. test_inc3_io.py asserts no CSF_* variable is set and then round-trips
STEP and IGES, reading the declared units back off both — which is exactly the
resource-less container the question was about.

The XSTEP readers keep the GIL, amending the blanket "file readers and writers"
line in design.md's GIL policy. STEP and IGES traffic in process-global
Interface_Static state, the IGES reader is documented as not thread-safe, and
the app already serialises imports behind a lock — so holding it costs nothing
and removes a class of question. RWStl, which touches no global state, releases.

XSControl_Reader and IGESData are registered although the app imports neither:
they are the reader base both concrete readers inherit their transfer surface
from, and the model-to-global-section chain the IGES unit probe walks.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DfriM8XUkn7uYf5Dwe2xo6
2026-08-10 20:31:15 +02:00

84 lines
2.6 KiB
CMake

cmake_minimum_required(VERSION 3.20)
project(n3xd_ocp LANGUAGES CXX)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Release)
endif()
# Match the kernel's flags: -O2, no fast-math, no -march=native. OCCT's
# version is a determinism input for assay's committed goldens, so the binding
# has no business introducing a different FP contract than the kernel it wraps.
set(CMAKE_CXX_FLAGS_RELEASE "-O2 -DNDEBUG")
find_package(Python 3.12 REQUIRED
COMPONENTS Interpreter Development.Module Development.SABIModule)
find_package(nanobind CONFIG REQUIRED)
find_package(OpenCASCADE REQUIRED)
# The version scheme is enforced, not merely conventional: a wheel labelled
# 7.9.3.N must actually wrap OCCT 7.9.3.
set(_occt_ver "${OpenCASCADE_MAJOR_VERSION}.${OpenCASCADE_MINOR_VERSION}.${OpenCASCADE_MAINTENANCE_VERSION}")
if(DEFINED SKBUILD_PROJECT_VERSION)
if(NOT SKBUILD_PROJECT_VERSION MATCHES "^${_occt_ver}\\.")
message(FATAL_ERROR
"Version '${SKBUILD_PROJECT_VERSION}' does not match the OCCT found "
"(${_occt_ver}). The scheme is <occt-version>.N — see pyproject.toml.")
endif()
endif()
message(STATUS "Building n3xd-ocp against OCCT ${_occt_ver}")
file(GLOB OCP_MODULE_SOURCES CONFIGURE_DEPENDS "src/modules/*.cpp")
file(GLOB OCP_EXT_SOURCES CONFIGURE_DEPENDS "src/ext/*.cpp")
nanobind_add_module(_OCP
STABLE_ABI
NB_STATIC
src/core.cpp
src/common/occt_module.cpp
src/common/occt_exceptions.cpp
${OCP_MODULE_SOURCES}
${OCP_EXT_SOURCES}
)
target_include_directories(_OCP PRIVATE ${OpenCASCADE_INCLUDE_DIR})
# Only the toolkits the bound surface actually reaches. Grows with each
# coverage increment; auditwheel bundles whatever the linker records.
target_link_libraries(_OCP PRIVATE
TKernel
TKMath
TKG2d
TKG3d
TKGeomBase
TKBRep
TKTopAlgo
# Inc 1
TKGeomAlgo # GeomAPI, GCPnts
TKPrim # BRepPrimAPI
TKBO # BRepAlgoAPI, BOPAlgo
TKMesh # BRepMesh
# Inc 2
TKFillet # BRepFilletAPI
TKOffset # BRepOffsetAPI
TKShHealing # ShapeFix, ShapeAnalysis, ShapeUpgrade
TKBool # BRepAlgo helpers pulled in by the above
# Inc 3
TKXSBase # XSControl, Interface, IFSelect
TKDESTEP # STEPControl
TKDEIGES # IGESControl, IGESData
TKDESTL # RWStl
# Inc 4 — TKService carries the BRep font/text builders. The builder image
# asserts it links without libGL/libX11, so this costs the runtime image
# nothing.
TKService
)
target_compile_definitions(_OCP PRIVATE
N3XD_OCP_VERSION="${SKBUILD_PROJECT_VERSION}"
)
install(TARGETS _OCP LIBRARY DESTINATION OCP)