Clean up Github Actions config

Author: jimporter

.github/workflows/build.yml

@@ -32,17 +32,18 @@ jobs:
           - {os: ubuntu-latest, compiler: clang, version: '10'}
 
           # Windows builds
-          - {os: windows-latest, version: '14.1', boost: '1_69_0'}
-          - {os: windows-latest, version: '14.2', boost: '1_72_0'}
+          - {os: windows-2016,   version: '14.16'}
+          - {os: windows-latest, version: '14.27'}
 
           # macOS builds
           - {os: macos-latest}
 
           # C++20 builds
           - {os: ubuntu-latest, compiler: gcc, version: '10',
-             flags: '--std=c++2a -Wsuggest-override'}
-          - {os: ubuntu-latest, compiler: clang, version:  '10',
-             flags: '--std=c++2a'}
+             options: '--std=c++2a', flags: '-Wsuggest-override',
+             boost-source: '1.74.0'}
+          - {os: ubuntu-latest, compiler: clang, version: '10',
+             options: '--std=c++2a', boost-source: '1.74.0'}
       fail-fast: false
 
     steps:
@@ -55,11 +56,15 @@ jobs:
       run: |
         pip install bfg9000
     - name: Install Linux dependencies
-      if: matrix.os == 'ubuntu-latest'
-      run: |
-        sudo apt-get install ninja-build libboost-dev libboost-iostreams-dev libboost-program-options-dev
+      if: startsWith(matrix.os, 'ubuntu-')
+      run: >
+        sudo apt-get install
+        ninja-build
+        libboost-dev
+        libboost-iostreams-dev
+        libboost-program-options-dev
     - name: Install Windows dependencies
-      if: matrix.os == 'windows-latest'
+      if: startsWith(matrix.os, 'windows-')
       run: |
         cinst ninja
         ${gnomebase} = "https://ftp.gnome.org/pub/gnome/binaries/win32"
@@ -70,12 +75,26 @@ jobs:
         7z x -y glib_2.28.8-1_win32.zip -oC:\pkg-config
         7z x -y gettext-runtime_0.18.1.1-2_win32.zip -oC:\pkg-config
         echo "PKG_CONFIG=C:\pkg-config\bin\pkg-config.exe" >> ${env:GITHUB_ENV}
-        echo "BOOST_INCLUDEDIR=${env:BOOST_ROOT_${{ matrix.boost }}}\include" >> ${env:GITHUB_ENV}
-        echo "BOOST_LIBRARYDIR=${env:BOOST_ROOT_${{ matrix.boost }}}\lib" >> ${env:GITHUB_ENV}
+
+        ${boostroot} = "${env:BOOST_ROOT_1_72_0}"
+        echo "BOOST_INCLUDEDIR=${boostroot}\include" >> ${env:GITHUB_ENV}
+        echo "BOOST_LIBRARYDIR=${boostroot}\lib" >> ${env:GITHUB_ENV}
     - name: Install macOS dependencies
-      if: matrix.os == 'macos-latest'
+      if: startsWith(matrix.os, 'macos-')
       run: |
         brew install ninja pkg-config boost
+    - name: Install Boost ${{ matrix.boost-source }}
+      if: matrix.boost-source
+      run: |
+        export SRCDIR=boost_`echo ${{ matrix.boost-source }} | sed 's/\./_/g'`
+        curl -LO https://dl.bintray.com/boostorg/release/${{ matrix.boost-source }}/source/${SRCDIR}.tar.bz2
+        tar -xjf ${SRCDIR}.tar.bz2
+        pushd ${SRCDIR}
+        ./bootstrap.sh --prefix=${HOME} --with-libraries=program_options,iostreams
+        ./b2 link=shared threading=multi variant=release -d0
+        ./b2 install -d0
+        popd
+        echo "BOOST_ROOT=${HOME}" >> ${GITHUB_ENV}
     - name: Install gcc
       if: matrix.compiler == 'gcc'
       run: |
@@ -92,7 +111,7 @@ jobs:
         sudo apt-get install clang-${{ matrix.version }}
         echo "CXX=clang++-${{ matrix.version }}" >> ${GITHUB_ENV}
     - name: Initialize MSVC ${{ matrix.version }}
-      if: matrix.os == 'windows-latest'
+      if: startsWith(matrix.os, 'windows-')
       uses: ilammy/msvc-dev-cmd@v1
       with:
         toolset: ${{ matrix.version }}
@@ -102,7 +121,7 @@ jobs:
         repository: jimporter/mettle
         path: mettle
     - name: Build mettle
-      if: matrix.os != 'windows-latest'
+      if: "!startsWith(matrix.os, 'windows-')"
       run: |
         pushd mettle
         CPATH="`pwd`/../include" 9k build --backend=ninja --prefix=${HOME}
@@ -114,7 +133,7 @@ jobs:
         echo "PKG_CONFIG_PATH=${HOME}/lib/pkgconfig" >> ${GITHUB_ENV}
         echo "CXXFLAGS=${COMMONFLAGS} ${{ matrix.flags }}" >> ${GITHUB_ENV}
     - name: Build mettle (Windows)
-      if: matrix.os == 'windows-latest'
+      if: startsWith(matrix.os, 'windows-')
       run: |
         ${env:CPATH} = "${pwd}\include"
         pushd mettle
@@ -128,6 +147,6 @@ jobs:
         echo "CXXFLAGS=/WX ${{ matrix.flags }}" >> ${env:GITHUB_ENV}
     - name: Run tests
       run: |
-        9k build --backend=ninja
+        9k build --backend=ninja ${{ matrix.options }}
         cd build
         ninja test