cross-arch.yml

name: Cross-arch

on:
  push:
    branches: [master]
    paths:
      - '**/*.c'
      - '**/*.h'
      - '.github/workflows/cross-arch.yml'
      - '.github/scripts/cross-run.sh'
  pull_request:
    types: [opened, synchronize, reopened, ready_for_review]
    paths:
      - '**/*.c'
      - '**/*.h'
      - '.github/workflows/cross-arch.yml'
      - '.github/scripts/cross-run.sh'
  workflow_call:
    inputs:
      caller_run_id:
        description: 'run id of the calling workflow; keeps a called run in its own concurrency group'
        type: string
        default: ''
  workflow_dispatch:

concurrency:
  group: ${{ inputs.caller_run_id && format('cross-arch-call-{0}', inputs.caller_run_id) || format('cross-arch-{0}', github.ref) }}
  cancel-in-progress: ${{ !inputs.caller_run_id }}

permissions:
  contents: read

jobs:
  cross:
    name: ${{ matrix.name }}
    if: github.event_name != 'pull_request' || github.event.pull_request.draft == false
    runs-on: ubuntu-24.04
    strategy:
      fail-fast: false
      matrix:
        include:
          - name: m32
            triple: ''
            cc: gcc
            cflags: '-m32'
            wrap: ''
            pkgs: gcc-multilib
          - name: aarch64
            triple: aarch64-linux-gnu
            cc: aarch64-linux-gnu-gcc
            cflags: ''
            wrap: qemu-aarch64
            pkgs: gcc-aarch64-linux-gnu libc6-dev-arm64-cross qemu-user
          - name: s390x
            triple: s390x-linux-gnu
            cc: s390x-linux-gnu-gcc
            cflags: ''
            wrap: qemu-s390x
            pkgs: gcc-s390x-linux-gnu libc6-dev-s390x-cross qemu-user
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v5
      - uses: ./.github/actions/apt-update
      - name: Install toolchain
        run: |
          set -euo pipefail
          sudo apt-get install -y --no-install-recommends autoconf automake libtool ${{ matrix.pkgs }}

      # sp-math-all keeps the bignum path pure C, so the same source runs on every
      # target; static so qemu-user needs no target sysroot at run time.
      - name: Cross-build wolfSSL (${{ matrix.name }})
        run: |
          set -euo pipefail
          bash "$GITHUB_WORKSPACE/.github/scripts/git-clone-retry.sh" -q --depth 1 --branch master https://github.com/wolfSSL/wolfssl /tmp/wolfssl
          cd /tmp/wolfssl
          ./autogen.sh >/dev/null
          host=""
          [ -n "${{ matrix.triple }}" ] && host="--host=${{ matrix.triple }} --build=x86_64-linux-gnu"
          # shellcheck disable=SC2086  # host is intentionally split into two flags
          ./configure $host CC="${{ matrix.cc }}" CFLAGS="${{ matrix.cflags }}" \
            --enable-static --disable-shared \
            --enable-ecc --enable-ed25519 --enable-keygen --enable-sp-math-all \
            --prefix=/tmp/wolfssl-inst >/dev/null
          make -j"$(nproc)" >/dev/null
          make install >/dev/null

      - name: Cross-run curated examples (${{ matrix.name }})
        env:
          CROSS_CC: ${{ matrix.cc }}
          CROSS_CFLAGS: ${{ matrix.cflags }}
          CROSS_WRAP: ${{ matrix.wrap }}
          WOLFSSL: /tmp/wolfssl-inst
        run: ./.github/scripts/cross-run.sh