wolfssl/.github/workflows/smoke-test.yml

name: Smoke Test

# Fast pre-flight build + make check across common-failure configs derived
# from the Jenkins PRB top-10 (last 30 days). Intentionally runs on drafts
# too: this is the gate that protects the rest of CI. Other PR workflows
# wait for this via .github/actions/wait-for-smoke.
#
# CFLAGS=-Werror is applied at make time only (not ./configure) so autoconf
# feature detection is not poisoned by benign warnings in conftest probes.
#
# For pull_request events the workflow tests the POST-MERGE tree:
# the PR head is checked out, the base branch is merged in, and:
#   * a merge conflict fails the job before any build runs.
#   * if the PR tree is identical to base (no diff), the matrix is skipped.
#   * otherwise the build runs against the merged tree.
# This catches stale PRs whose head builds clean but whose merge with
# current master would break.

on:
  push:
    branches: [ master, main ]
    paths-ignore:
      - '**/*.md'
      - 'doc/**'
      - 'AUTHORS'
      - 'LICENSING'
      - 'ChangeLog.md'
  pull_request:
    types: [opened, synchronize, reopened, ready_for_review]
    branches: [ master, main ]

concurrency:
  group: smoke-${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  smoke:
    runs-on: ubuntu-24.04
    timeout-minutes: 25
    strategy:
      fail-fast: false
      matrix:
        config:
          - name: default
            args: ""
          - name: enable-all
            args: "--enable-all"
          - name: opensslextra
            args: "--enable-opensslextra"
          - name: enable-all-smallstack
            args: "--enable-all --enable-smallstack"
          - name: cryptonly
            args: "--enable-cryptonly"
          # Below entries target the top Jenkins PRB failure modes
          # (-Werror unused-function / implicit-decl / link errors).
          - name: leantls-extra
            args: "--enable-leantls --enable-session-ticket --enable-sni --enable-opensslextra"
          - name: dtls-suite
            args: "--enable-psk --enable-dtls --enable-dtls13 --enable-dtls-mtu --enable-aesccm --enable-opensslextra"
          - name: integration
            args: "--enable-openssh --enable-lighty --enable-stunnel --enable-opensslextra"
          # AddressSanitizer (UBSAN excluded - current master has known
          # left-shift UB in auto-generated SP math).
          - name: sanitize-asan
            args: "--enable-all"
            cflags: "-fsanitize=address -fno-omit-frame-pointer -g -O1"
            ldflags: "-fsanitize=address"
    env:
      MAKE_CFLAGS: "-Werror"
    steps:
      # For PRs we explicitly check out the PR head (not the auto-merge
      # ref) and do the merge ourselves below so we can fail fast on
      # conflicts. For push events we just check out the pushed SHA.
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          ref: ${{ github.event.pull_request.head.sha || github.sha }}

      - name: Merge base into PR head (fail fast on conflict)
        id: merge_check
        if: github.event_name == 'pull_request'
        env:
          BASE_REF: ${{ github.event.pull_request.base.ref }}
        run: |
          set -e
          git config user.email "ci@wolfssl.invalid"
          git config user.name "wolfSSL CI Merge"
          git fetch --no-tags origin "$BASE_REF"
          BASE_SHA=$(git rev-parse FETCH_HEAD)
          if git diff --quiet "$BASE_SHA" HEAD; then
            echo "::notice::PR tree is identical to $BASE_REF; skipping smoke matrix."
            echo "skip=true" >> "$GITHUB_OUTPUT"
            exit 0
          fi
          if ! git merge --no-ff --no-commit "$BASE_SHA"; then
            echo "::error::Merge conflicts with $BASE_REF - please rebase or merge $BASE_REF into the PR branch before testing."
            git merge --abort || true
            exit 1
          fi
          echo "skip=false" >> "$GITHUB_OUTPUT"
          echo "Clean merge with $BASE_REF; testing post-merge tree."

      - name: Install dependencies
        if: steps.merge_check.outputs.skip != 'true'
        uses: ./.github/actions/install-apt-deps
        with:
          packages: autoconf automake libtool build-essential

      - name: autogen
        if: steps.merge_check.outputs.skip != 'true'
        run: ./autogen.sh

      - name: configure ${{ matrix.config.name }}
        if: steps.merge_check.outputs.skip != 'true'
        run: ./configure ${{ matrix.config.args }}

      - name: make
        if: steps.merge_check.outputs.skip != 'true'
        env:
          ENTRY_CFLAGS: ${{ matrix.config.cflags }}
          ENTRY_LDFLAGS: ${{ matrix.config.ldflags }}
        run: |
          FLAGS="${ENTRY_CFLAGS:-$MAKE_CFLAGS}"
          make -j"$(nproc)" CFLAGS="$FLAGS" LDFLAGS="$ENTRY_LDFLAGS"

      - name: make check
        if: steps.merge_check.outputs.skip != 'true'
        env:
          ENTRY_CFLAGS: ${{ matrix.config.cflags }}
          ENTRY_LDFLAGS: ${{ matrix.config.ldflags }}
        run: |
          FLAGS="${ENTRY_CFLAGS:-$MAKE_CFLAGS}"
          make check CFLAGS="$FLAGS" LDFLAGS="$ENTRY_LDFLAGS"