name: Build toolchains

on:
  workflow_call:
    inputs:
      samples:
        description: Stringified JSON list of samples
        required: true
        type: string
      canadian-cross:
        description: Build Canadian Cross toolchain(x86_64-w64-mingw32)
        default: false
        required: false
        type: boolean

jobs:
  build:
    runs-on: ${{ matrix.host }}
    strategy:
      matrix:
        host: [ "ubuntu-latest", "macos-10.15" ]
        sample: ${{ fromJSON(inputs.samples) }}
        exclude:
          # Exclude both glibc & uClibc ARC Linux toolchains as
          # there's no known use of ARC Linux toolchains on Mac,
          # and anyway glibc fails to build for ARC700,
          # see https://github.com/crosstool-ng/crosstool-ng/pull/1456#issuecomment-779150246
          - { host: "macos-10.15", sample: "arc-multilib-linux-gnu" }
          - { host: "macos-10.15", sample: "arc-multilib-linux-uclibc" }

          # Exclude mips*-*-linux-gnu because of <byteswap.h> usage in
          # elf-entry.c for linux kernel headers.  <byteswap.h> is a GNU
          # extension and doesn't exist on MacOS X
          - { host: "macos-10.15", sample: "mips-unknown-linux-gnu" }
          - { host: "macos-10.15", sample: "mips64-unknown-linux-gnu" }

          # Exclude x86_64-w64-mingw32,x86_64-pc-linux-gnu because it crashes on m4 build with
          # a Segmentation fault
          - { host: "macos-10.15", sample: "x86_64-w64-mingw32,x86_64-pc-linux-gnu" }
    steps:
      - name: create case sensitive workspace volume for macOS
        if: ${{ runner.os == 'macOS' }}
        run: |
          cd ..
          rmdir crosstool-ng
          hdiutil create ${HOME}/Workspace.sparseimage -volname crosstool-ng -type SPARSE -size 20g -fs HFSX
          hdiutil mount ${HOME}/Workspace.sparseimage -mountroot /Users/runner/work/crosstool-ng
          cd crosstool-ng
      - name: download ct-ng
        uses: actions/download-artifact@v2
        with:
          name: crosstool.${{ matrix.host }}
      - name: extract ct-ng
        run: |
          tar -xf ct-ng.tar
      - name: download tarballs
        uses: actions/download-artifact@v2
        with:
          name: src.tar
      - name: extract tarballs
        run: |
          tar -xvf src.tar
      - name: prereq Linux
        if: ${{ runner.os == 'Linux' }}
        run: |
          sudo apt-get install -y gperf help2man libtool-bin
          echo "${{ github.workspace }}/.local/bin" >> $GITHUB_PATH
      - name: prereq macOS
        if: ${{ runner.os == 'macOS' }}
        run: |
          brew install autoconf automake bash binutils gawk gnu-sed \
               gnu-tar help2man make ncurses pkg-config
          echo "${{ github.workspace }}/.local/bin" >> $GITHUB_PATH
      - name: download x86_64-w64-mingw32.${{ matrix.host }} tarball
        if: ${{ inputs.canadian-cross }}
        uses: actions/download-artifact@v2
        with:
          name: x86_64-w64-mingw32.${{ matrix.host }}.tar
      - name: install x86_64-w64-mingw32.${{ matrix.host }} toolchain
        if: ${{ inputs.canadian-cross }}
        run: |
          mkdir -p ${{ github.workspace }}/x86_64-w64-mingw32
          tar -C ${{ github.workspace }}/x86_64-w64-mingw32 \
              -xf x86_64-w64-mingw32.${{ matrix.host }}.tar
          echo "${{ github.workspace }}/x86_64-w64-mingw32/bin" >> $GITHUB_PATH
      - name: build ${{ matrix.sample }} for ${{ matrix.host }}
        run: |
          mkdir -p src
          ct-ng ${{ matrix.sample }}
          sed -i -e '/CT_LOG_PROGRESS_BAR/s/y$/n/' .config
          sed -i -e '/CT_LOCAL_TARBALLS_DIR/s/HOME/CT_TOP_DIR/' .config
          sed -i -e '/CT_PREFIX_DIR/s/HOME/CT_TOP_DIR/' .config
          ct-ng build
      - name: create ${{ matrix.sample }}.${{ matrix.host }} tarball
        if: ${{ matrix.sample == 'x86_64-w64-mingw32' }}
        run: |
          tar -C ${{ github.workspace }}/x-tools/${{ matrix.sample }} \
              -cf ${{ matrix.sample }}.${{ matrix.host }}.tar .
      - name: upload ${{ matrix.sample }}.${{ matrix.host }} tarball
        if: ${{ matrix.sample == 'x86_64-w64-mingw32' }}
        uses: actions/upload-artifact@v2
        with:
          name: x86_64-w64-mingw32.${{ matrix.host }}.tar
          path: |
            x86_64-w64-mingw32.${{ matrix.host }}.tar
      - name: upload log
        uses: actions/upload-artifact@v2
        with:
          name: ${{ matrix.sample }}.${{ matrix.host }}.log
          path: |
            build.log
            .config
        if: ${{ always() }}