# instantiated by ci.yml
name: build-template
on:
  workflow_call:
    inputs:
      check-level:
        type: string
        required: true
      config:
        type: string
        required: true
      nightly:
        type: string
        required: true
      LEAN_VERSION_MAJOR:
        type: string
        required: true
      LEAN_VERSION_MINOR:
        type: string
        required: true
      LEAN_VERSION_PATCH:
        type: string
        required: true
      LEAN_SPECIAL_VERSION_DESC:
        type: string
        required: true
      RELEASE_TAG:
        type: string
        required: true

jobs:
  build:
    if: github.event_name != 'schedule' || github.repository == 'leanprover/lean4'
    strategy:
      matrix:
        include: ${{fromJson(inputs.config)}}
      # complete all jobs
      fail-fast: false
    runs-on: ${{ endsWith(matrix.os, '-with-cache') && fromJSON(format('["{0}", "nscloud-git-mirror-1gb"]', matrix.os)) || matrix.os }}
    defaults:
      run:
        shell: ${{ matrix.shell || 'nix develop -c bash -euxo pipefail {0}' }}
    name: ${{ matrix.name }}
    env:
      # must be inside workspace
      CCACHE_DIR: ${{ github.workspace }}/.ccache
      CCACHE_COMPRESS: true
      # current cache limit
      CCACHE_MAXSIZE: 400M
      # squelch error message about missing nixpkgs channel
      NIX_BUILD_SHELL: bash
      LSAN_OPTIONS: max_leaks=10
      # somehow MinGW clang64 (or cmake?) defaults to `g++` even though it doesn't exist
      CXX: c++
      MACOSX_DEPLOYMENT_TARGET: 10.15
    steps:
      - name: Install Nix
        uses: DeterminateSystems/nix-installer-action@main
        if: runner.os == 'Linux' && !matrix.cmultilib
      - name: Install MSYS2
        uses: msys2/setup-msys2@v2
        with:
          msystem: clang64
          # `:` means do not prefix with msystem
          pacboy: "make: python: cmake clang ccache gmp libuv git: zip: unzip: diffutils: binutils: tree: zstd tar:"
        if: runner.os == 'Windows'
      - name: Install Brew Packages
        run: |
          brew install ccache tree zstd coreutils gmp libuv
        if: runner.os == 'macOS'
      - name: Checkout
        if: (!endsWith(matrix.os, '-with-cache'))
        uses: actions/checkout@v4
        with:
          # the default is to use a virtual merge commit between the PR and master: just use the PR
          ref: ${{ github.event.pull_request.head.sha }}
      - name: Namespace Checkout
        if: endsWith(matrix.os, '-with-cache')
        uses: namespacelabs/nscloud-checkout-action@v7
        with:
          ref: ${{ github.event.pull_request.head.sha }}
      - name: Open Nix shell once
        run: true
        if: runner.os == 'Linux'
      # Do check out some CI-relevant files from virtual merge commit to accommodate CI changes on
      # master (as the workflow files themselves are always taken from the merge)
      # (needs to be after "Install *" to use the right shell)
      - name: CI Merge Checkout
        run: |
          git fetch --depth=1 origin ${{ github.sha }}
          git checkout FETCH_HEAD flake.nix flake.lock script/prepare-* tests/lean/run/importStructure.lean
        if: github.event_name == 'pull_request'
      # (needs to be after "Checkout" so files don't get overridden)
      - name: Setup emsdk
        uses: mymindstorm/setup-emsdk@v14
        with:
          version: 3.1.44
          actions-cache-folder: emsdk
        if: matrix.wasm
      - name: Install 32bit c libs
        run: |
          sudo dpkg --add-architecture i386
          sudo apt-get update
          sudo apt-get install -y gcc-multilib g++-multilib ccache libuv1-dev:i386 pkgconf:i386
        if: matrix.cmultilib
      - name: Restore Cache
        id: restore-cache
        uses: actions/cache/restore@v4
        with:
          # NOTE: must be in sync with `save` below and with `restore-cache` in `update-stage0.yml`
          path: |
            .ccache
            ${{ matrix.name == 'Linux Lake' && 'build/stage1/**/*.trace
            build/stage1/**/*.olean*
            build/stage1/**/*.ilean
            build/stage1/**/*.ir
            build/stage1/**/*.c
            build/stage1/**/*.c.o*' || '' }}
          key: ${{ matrix.name }}-build-v3-${{ github.sha }}
          # fall back to (latest) previous cache
          restore-keys: |
            ${{ matrix.name }}-build-v3
      # open nix-shell once for initial setup
      - name: Setup
        run: |
          ccache --zero-stats
        if: runner.os == 'Linux'
      - name: Set up env
        run: |
          echo "NPROC=$(nproc 2>/dev/null || sysctl -n hw.logicalcpu 2>/dev/null || echo 4)" >> $GITHUB_ENV
          if ! diff src/stdlib_flags.h stage0/src/stdlib_flags.h; then
            echo "src/stdlib_flags.h and stage0/src/stdlib_flags.h differ, will test and pack stage 2"
            echo "TARGET_STAGE=stage2" >> $GITHUB_ENV
          else
            echo "TARGET_STAGE=stage1" >> $GITHUB_ENV
          fi
      - name: Build
        run: |
          ulimit -c unlimited  # coredumps
          [ -d build ] || mkdir build
          cd build
          # arguments passed to `cmake`
          OPTIONS=(-DLEAN_EXTRA_MAKE_OPTS=-DwarningAsError=true)
          if [[ -n '${{ matrix.release }}' ]]; then
            # this also enables githash embedding into stage 1 library, which prohibits reusing
            # `.olean`s across commits, so we don't do it in the fast non-release CI
            OPTIONS+=(-DCHECK_OLEAN_VERSION=ON)
          fi
          if [[ -n '${{ matrix.cross_target }}' ]]; then
            # used by `prepare-llvm`
            export EXTRA_FLAGS=--target=${{ matrix.cross_target }}
            OPTIONS+=(-DLEAN_PLATFORM_TARGET=${{ matrix.cross_target }})
          fi
          if [[ -n '${{ matrix.prepare-llvm }}' ]]; then
            wget -q ${{ matrix.llvm-url }}
            PREPARE="$(${{ matrix.prepare-llvm }})"
            if [ "$TARGET_STAGE" == "stage2" ]; then
              cp -r stage1 stage2
            fi
            eval "OPTIONS+=($PREPARE)"
          fi
          if [[ -n '${{ matrix.release }}' && -n '${{ inputs.nightly }}' ]]; then
            OPTIONS+=(-DLEAN_SPECIAL_VERSION_DESC=${{ inputs.nightly }})
          fi
          if [[ -n '${{ matrix.release }}' && -n '${{ inputs.RELEASE_TAG }}' ]]; then
            OPTIONS+=(-DLEAN_VERSION_MAJOR=${{ inputs.LEAN_VERSION_MAJOR }})
            OPTIONS+=(-DLEAN_VERSION_MINOR=${{ inputs.LEAN_VERSION_MINOR }})
            OPTIONS+=(-DLEAN_VERSION_PATCH=${{ inputs.LEAN_VERSION_PATCH }})
            OPTIONS+=(-DLEAN_VERSION_IS_RELEASE=1)
            OPTIONS+=(-DLEAN_SPECIAL_VERSION_DESC=${{ inputs.LEAN_SPECIAL_VERSION_DESC }})
          fi
          # contortion to support empty OPTIONS with old macOS bash
          cmake .. --preset ${{ matrix.CMAKE_PRESET || 'release' }} -B . ${{ matrix.CMAKE_OPTIONS }} ${OPTIONS[@]+"${OPTIONS[@]}"} -DLEAN_INSTALL_PREFIX=$PWD/..
          time make $TARGET_STAGE -j$NPROC
      # Should be done as early as possible and in particular *before* "Check rebootstrap" which
      # changes the state of stage1/
      - name: Save Cache
        # Caching on cancellation created some mysterious issues perhaps related to improper build
        # shutdown
        if: steps.restore-cache.outputs.cache-hit != 'true' && !cancelled()
        uses: actions/cache/save@v4
        with:
          # NOTE: must be in sync with `restore` above
          path: |
            .ccache
            ${{ matrix.name == 'Linux Lake' && 'build/stage1/**/*.trace
            build/stage1/**/*.olean*
            build/stage1/**/*.ilean
            build/stage1/**/*.ir
            build/stage1/**/*.c
            build/stage1/**/*.c.o*' || '' }}
          key: ${{ steps.restore-cache.outputs.cache-primary-key }}
      - name: Install
        run: |
          make -C build/$TARGET_STAGE install
      - name: Check Binaries
        run: ${{ matrix.binary-check }} lean-*/bin/* || true
      - name: Count binary symbols
        run: |
          for f in lean-*/bin/*; do
            echo "$f: $(nm $f | grep " T " | wc -l) exported symbols"
          done
        if: matrix.name == 'Windows'
      - name: List Install Tree
        run: |
          # omit contents of Init/, ...
          tree --du -h lean-*-* | grep -E ' (Init|Lean|Lake|LICENSE|[a-z])'
      - name: Pack
        run: |
          dir=$(echo lean-*-*)
          mkdir pack
          # high-compression tar.zst + zip for release, fast tar.zst otherwise
          if [[ '${{ startsWith(github.ref, 'refs/tags/') && matrix.release }}' == true || -n '${{ inputs.nightly }}' || -n '${{ inputs.RELEASE_TAG }}' ]]; then
            ${{ matrix.tar || 'tar' }} cf - $dir | zstd -T0 --no-progress -19 -o pack/$dir.tar.zst
            zip -rq pack/$dir.zip $dir
          else
            ${{ matrix.tar || 'tar' }} cf - $dir | zstd -T0 --no-progress -o pack/$dir.tar.zst
          fi
      - uses: actions/upload-artifact@v4
        if: matrix.release
        with:
          name: build-${{ matrix.name }}
          path: pack/*
      - name: Lean stats
        run: |
          build/$TARGET_STAGE/bin/lean --stats src/Lean.lean -Dexperimental.module=true
        if: ${{ !matrix.cross }}
      - name: Test
        id: test
        run: |
          ulimit -c unlimited  # coredumps
          time ctest --preset ${{ matrix.CMAKE_PRESET || 'release' }} --test-dir build/$TARGET_STAGE -j$NPROC --output-junit test-results.xml
        if: (matrix.wasm || !matrix.cross) && (inputs.check-level >= 1 || matrix.test)
      - name: Test Summary
        uses: test-summary/action@v2
        with:
          paths: build/${{ env.TARGET_STAGE }}/test-results.xml
        # prefix `if` above with `always` so it's run even if tests failed
        if: always() && steps.test.conclusion != 'skipped'
      - name: Check Test Binary
        run: ${{ matrix.binary-check }} tests/compiler/534.lean.out
        if: (!matrix.cross) && steps.test.conclusion != 'skipped'
      - name: Build Stage 2
        run: |
          make -C build -j$NPROC stage2
        if: matrix.test-speedcenter
      - name: Check Stage 3
        run: |
          make -C build -j$NPROC check-stage3
        if: matrix.check-stage3
      - name: Test Speedcenter Benchmarks
        run: |
          # Necessary for some timing metrics but does not work on Namespace runners
          # and we just want to test that the benchmarks run at all here
          #echo -1 | sudo tee /proc/sys/kernel/perf_event_paranoid
          export BUILD=$PWD/build PATH=$PWD/build/stage1/bin:$PATH
          cd tests/bench
          nix shell .#temci -c temci exec --config speedcenter.yaml --included_blocks fast --runs 1
        if: matrix.test-speedcenter
      - name: Check rebootstrap
        run: |
          set -e
          # clean rebuild in case of Makefile changes/Lake does not detect uncommited stage 0
          # changes yet
          make -C build update-stage0
          make -C build/stage1 clean-stdlib
          time make -C build -j$NPROC
          time ctest --preset ${{ matrix.CMAKE_PRESET || 'release' }} --test-dir build/stage1 -j$NPROC
        if: matrix.check-rebootstrap
      - name: CCache stats
        if: always()
        run: ccache -s
      - name: Show stacktrace for coredumps
        if: failure() && runner.os == 'Linux'
        run: |
          for c in $(find . -name core); do
            progbin="$(file $c | sed "s/.*execfn: '\([^']*\)'.*/\1/")"
            echo bt | $GDB/bin/gdb -q $progbin $c || true
          done