tinyobjloader: add build-tinyobjloader.yml for riscv64 wheels

.github/workflows/build-tinyobjloader.yml

@@ -0,0 +1,83 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+name: Build tinyobjloader wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'tinyobjloader version to build (git tag without the leading v, e.g. 2.0.0rc13)'
+        required: true
+        default: '2.0.0rc13'
+  pull_request:
+    paths:
+      - '.github/workflows/build-tinyobjloader.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ inputs.version || '2.0.0rc13' }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read  # to fetch code (actions/checkout)
+
+env:
+  TINYOBJLOADER_VERSION: ${{ inputs.version || '2.0.0rc13' }}
+  MANYLINUX_RISCV64_IMAGE: quay.io/pypa/manylinux_2_39_riscv64
+
+jobs:
+  setup:
+    uses: $/.github/workflows/_setup.yml
+
+  build_wheels:
+    needs: [setup]
+    name: Build tinyobjloader ${{ inputs.version || '2.0.0rc13' }} ${{ matrix.python }}-manylinux_riscv64
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 60
+    strategy:
+      fail-fast: false
+      matrix:
+        python: ["cp312", "cp313", "cp314", "cp314t"]
+
+    steps:
+      - name: Checkout tinyobjloader v${{ env.TINYOBJLOADER_VERSION }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: tinyobjloader/tinyobjloader
+          ref: v${{ env.TINYOBJLOADER_VERSION }}
+          fetch-depth: 0
+          fetch-tags: true
+          persist-credentials: false
+
+      - name: Build wheels
+        uses: pypa/cibuildwheel@1828c10ab37f080699c7b81cea34097c684a7074  # v4.2.0
+        with:
+          output-dir: wheelhouse/
+          only: ${{ matrix.python }}-manylinux_riscv64
+        env:
+          CIBW_MANYLINUX_RISCV64_IMAGE: ${{ env.MANYLINUX_RISCV64_IMAGE }}
+          CIBW_ENVIRONMENT: PIP_EXTRA_INDEX_URL=https://pypi.riseproject.dev/simple/
+          # numpy has no riscv64 wheel on public PyPI; keep pip on our registry's copy.
+          # It's only a test dependency: the wheel itself declares none.
+          CIBW_TEST_ENVIRONMENT: PIP_ONLY_BINARY=numpy
+          CIBW_TEST_REQUIRES: numpy
+          # Upstream ships no automated test suite at this tag; python/sample.py is
+          # its own smoke-test script exercising parsing, attributes, materials,
+          # shapes, and the numpy_* accessors against models/cornell_box.obj.
+          CIBW_TEST_COMMAND: cd {project}/python && python sample.py
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: tinyobjloader-${{ env.TINYOBJLOADER_VERSION }}-${{ matrix.python }}-manylinux_riscv64
+          path: wheelhouse/*.whl
+          if-no-files-found: error
+
+  publish:
+    name: Publish tinyobjloader ${{ inputs.version || '2.0.0rc13' }}
+    needs: [setup, build_wheels]
+    permissions:
+      contents: write
+      pull-requests: write
+    uses: $/.github/workflows/_publish-wheel.yml
+    with:
+      artifact-pattern: tinyobjloader-${{ inputs.version || '2.0.0rc13' }}-*-manylinux_riscv64