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luhenry
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MaterialX 1.39.5's exported MaterialXConfig.cmake calls find_dependency(X11 REQUIRED COMPONENTS Xt) on every non-Apple Unix, regardless of MATERIALX_BUILD_RENDER, so OpenUSD's find_package(MaterialX) fails to configure in the manylinux_2_39_riscv64 image, which has no X11 development packages.
OpenUSD 26.08 moved the default PXR_PYTHON_INSTALL_DIR from lib/python to lib/pythonX.Y/site-packages, so the pxr staging step (which mirrors upstream install_usdex.py and reads <usd>/lib/python/pxr) found no modules and exited on the first one: "pxr.Ar has no _ar binding". Pin the legacy layout of upstream's packman OpenUSD, as build-usd-core.yml already does.
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usd-exchange3.0.0Compiles the
usdex_core/usdex_rtxC++ libraries and pybind11 bindings, plus the OpenUSD 26.08 runtime (with MaterialX and oneTBB) the wheel bundles. Upstream publishes no riscv64 wheel.Mirrors upstream's repo_man build (
tools/repoman/cmake_build.py,install_usdex.py,py_package.py) and itswhltest suite (tools/pyproject/pytest.sh).Differs from upstream
v26.08built withbuild_usd.py— NVIDIA's packman OpenUSD/MaterialX/oneTBB packages have no riscv64 flavor.PXR_PY_UNDEFINED_DYNAMIC_LOOKUP=ON, so no libpython dependency, as in our usd-core..pyistubs — upstream's stubgen runs through internal repo_man tooling.Matrix: cp310-cp313 — upstream's
requires-pythonis<3.14.Testing
License: Wheel bundles OpenUSD (TOST-1.0), MaterialX and oneTBB (Apache-2.0), with upstream's own notice files.
Patches
0001-Support-riscv64-in-pxr-base-arch.patch—Upstream-Status: To upstream, same patch as usd-core 26.8. Without it OpenUSD'spxr/base/archstops every translation unit with#error "Unsupported architecture". riscv64-only.