build-xbuildenv.yml

name: Build Job for Pyodide

description: This composite action encapsulates the build job for creating the cross-build environment for Pyodide.

on:
  workflow_call:

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      
      - uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b # v5.3.0
        with:
          python-version: "3.12"

      - uses: actions/setup-node@v4
        with:
          node-version: 22

      - name: Install system-level dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y --no-install-recommends \
          cmake bzip2 ccache f2c g++ gfortran git make \
          patch pkg-config swig unzip wget xz-utils \
          autoconf autotools-dev automake texinfo dejagnu \
          build-essential libtool libltdl-dev \
          gnupg2 libdbus-glib-1-2 sudo sqlite3 \
          ninja-build jq xxd

      - name: Cache ccache outputs
        uses: actions/cache/restore@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4.2.0
        with:
          path: /tmp/ccache
          key: ccache-${{ hashFiles('Makefile.envs') }}

      - name: Check out Pyodide, and the NumPy v2 mirror branch
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          repository: pyodide/pyodide
          ref: main
          path: pyodide_checkout
          submodules: recursive

      - name: Restore cached built packages
        uses: actions/cache/restore@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4.2.0
        with:
          path: |
            pyodide_checkout/packages/.libs/*
            pyodide_checkout/packages/.artifacts/*
            pyodide_checkout/dist/*.whl
          key: pyodide-packages-${{ hashFiles('pyodide_checkout/packages/recipes/**/*.yaml') }}

      - run: echo "PYODIDE_JOBS=$(nproc)" >> "$GITHUB_ENV"

      - name: Build Pyodide packages with NumPy v2 enabled
        working-directory: pyodide_checkout/
        run: |
          source pyodide_env.sh
          ccache -z
          make -C emsdk
          make -C cpython
          pip install -e ./pyodide-build
          PYODIDE_PACKAGES="numpy,scipy,cffi" make
          ccache -s

      - name: Save ccached outputs
        uses: actions/cache/save@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4.2.0
        with:
          path: /tmp/ccache
          key: ccache-${{ hashFiles('Makefile.envs') }}

      - name: Create cross-build environment
        working-directory: pyodide_checkout/
        run: |
          python tools/create_xbuildenv.py .
          tar cjf xbuildenv.tar.bz2 ./xbuildenv/

      - name: Upload cross-build environment
        uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b # v4.5.0
        with:
          name: cross-build-env
          path: |
            pyodide_checkout/xbuildenv.tar.bz2
          if-no-files-found: error
          retention-days: 1