azure-pipelines: add pipelines for linux, mac and win

This is the equivalent to the current AppVeyor + Travis setup.

azure-pipelines.yml

@@ -0,0 +1,148 @@
+strategy:
+  matrix:
+    Linux_amd64:
+      vmImage: 'ubuntu-16.04'
+      CPU: amd64
+    Linux_i386:
+      vmImage: 'ubuntu-16.04'
+      CPU: i386
+    OSX_amd64:
+      vmImage: 'macOS-10.14'
+      CPU: amd64
+    OSX_amd64_cpp:
+      vmImage: 'macOS-10.14'
+      CPU: amd64
+      NIM_COMPILE_TO_CPP: true
+    Windows_amd64:
+      vmImage: 'windows-2019'
+      CPU: amd64
+    Windows_amd64_pkg:
+      vmImage: 'windows-2019'
+      CPU: amd64
+      NIM_TEST_PACKAGES: true
+
+pool:
+  vmImage: $(vmImage)
+
+workspace:
+  clean: all
+
+steps:
+  - bash: git config --global core.autocrlf false
+    displayName: 'Disable auto conversion to CRLF by git (Windows-only)'
+    condition: eq(variables['Agent.OS'], 'Windows_NT')
+
+  - checkout: self
+
+  - bash: git clone --depth 1 https://github.com/nim-lang/csources.git
+    displayName: 'Checkout csources'
+
+  - task: NodeTool@0
+    inputs:
+      versionSpec: '8.x'
+    displayName: 'Install node.js 8.x'
+
+  - bash: |
+      sudo apt-fast update -qq
+      DEBIAN_FRONTEND='noninteractive' \
+        sudo apt-fast install --no-install-recommends -yq \
+          libcurl4-openssl-dev libgc-dev libsdl1.2-dev libsfml-dev
+    displayName: 'Install dependencies (amd64 Linux)'
+    condition: and(eq(variables['Agent.OS'], 'Linux'), eq(variables['CPU'], 'amd64'))
+
+  - bash: |
+      sudo dpkg --add-architecture i386
+
+      # Downgrade llvm, libgcc and libstdc++:
+      # - llvm has to be downgraded to have 32bit version installed for sfml.
+      # - libgcc and libstdc++ have to be downgraded as an optimization to
+      #   prevent the use of the toolchain ppa, which has a terrible download
+      #   speed.
+      cat << EOF | sudo tee /etc/apt/preferences.d/pin-to-rel
+      Package: libllvm6.0 libgcc1 libstdc++6
+      Pin: origin "azure.archive.ubuntu.com"
+      Pin-Priority: 1001
+
+      Package: *
+      Pin: release o=LP-PPA-ubuntu-toolchain-r-test
+      Pin-Priority: 100
+      EOF
+
+      sudo apt-fast update -qq
+      DEBIAN_FRONTEND='noninteractive' \
+        sudo apt-fast install --no-install-recommends --allow-downgrades -yq \
+          g++-multilib gcc-multilib libcurl4-openssl-dev:i386 libgc-dev:i386 \
+          libsdl1.2-dev:i386 libsfml-dev:i386 libglib2.0-dev:i386
+
+      cat << EOF > bin/gcc
+      #!/bin/bash
+
+      exec $(which gcc) -m32 "\$@"
+      EOF
+      cat << EOF > bin/g++
+      #!/bin/bash
+
+      exec $(which g++) -m32 "\$@"
+      EOF
+
+      chmod 755 bin/gcc
+      chmod 755 bin/g++
+
+    displayName: 'Install dependencies (i386 Linux)'
+    condition: and(eq(variables['Agent.OS'], 'Linux'), eq(variables['CPU'], 'i386'))
+
+  - bash: brew install boehmgc make sfml
+    displayName: 'Install dependencies (OSX)'
+    condition: eq(variables['Agent.OS'], 'Darwin')
+
+  - bash: |
+      mkdir dist
+      curl -L https://nim-lang.org/download/mingw64-6.3.0.7z -o dist/mingw64.7z
+      curl -L https://nim-lang.org/download/dlls.zip -o dist/dlls.zip
+      7z x dist/mingw64.7z -odist
+      7z x dist/dlls.zip -obin
+      echo '##vso[task.prependpath]$(System.DefaultWorkingDirectory)/dist/mingw64/bin'
+
+    displayName: 'Install dependencies (Windows)'
+    condition: eq(variables['Agent.OS'], 'Windows_NT')
+
+  - bash: echo '##vso[task.prependpath]$(System.DefaultWorkingDirectory)/bin'
+    displayName: 'Add build binaries to PATH'
+
+  - bash: |
+      echo 'PATH:' "$PATH"
+      echo '##[section]gcc version'
+      gcc -v
+      echo '##[section]nodejs version'
+      node -v
+      echo '##[section]make version'
+      make -v
+    displayName: 'System information'
+
+  - bash: |
+      ncpu=
+      case '$(Agent.OS)' in
+      'Linux')
+        ncpu=$(nproc)
+        ;;
+      'Darwin')
+        ncpu=$(sysctl -n hw.ncpu)
+        ;;
+      'Windows_NT')
+        ncpu=$NUMBER_OF_PROCESSORS
+        ;;
+      esac
+      [[ -z "$ncpu" || $ncpu -le 0 ]] && ncpu=1
+
+      make -C csources -j $ncpu CC=gcc ucpu=$(CPU)
+    displayName: 'Build csources'
+
+  - bash: nim c koch
+    displayName: 'Build koch'
+
+    # set result to omit the "bash exited with error code '1'" message
+  - bash: |
+      ./koch runCI || echo '##vso[task.complete result=Failed]'
+    displayName: 'Run CI'
+    env:
+      SYSTEM_ACCESSTOKEN: $(System.AccessToken)