Experiment with Semaphore CI 2.0

.semaphore/semaphore.yml

@@ -0,0 +1,59 @@
+version: v1.0
+name: LDC
+agent:
+  machine:
+    type: e1-standard-8
+    os_image: ubuntu1804
+
+blocks:
+  - name: "Semaphore 2.0"
+    task:
+      env_vars:
+        - name: HOST_LDC_VERSION
+          value: "1.14.0"
+      jobs:
+        - name: Build and test
+          commands:
+            - checkout || true
+            - git submodule update --init
+            # Install prerequisites
+            - export DEBIAN_FRONTEND=noninteractive
+            - sudo dpkg --add-architecture i386
+            - sudo apt-get -q update
+            - |
+              sudo apt-get -yq install \
+                cmake ninja-build g++-multilib \
+                llvm-dev zlib1g-dev libclang-common-6.0-dev \
+                libcurl4 libcurl4:i386 \
+                curl gdb python-pip tzdata unzip zip
+            - export CC="gcc-7"
+            - export CXX="g++-7"
+            - sudo update-alternatives --install /usr/bin/ld ld /usr/bin/ld.gold 99
+            - pip install --user lit
+            - python -c "import lit; lit.main();" --version | head -n 1
+            - curl -L -o ldc2.tar.xz https://github.com/ldc-developers/ldc/releases/download/v$HOST_LDC_VERSION/ldc2-$HOST_LDC_VERSION-linux-x86_64.tar.xz
+            - mkdir host-ldc
+            - tar -xf ldc2.tar.xz --strip 1 -C host-ldc
+            - rm ldc2.tar.xz
+            # Build LDC & LDC D unittests & defaultlib unittest runners
+            - cmake --version
+            - ninja --version
+            - mkdir build
+            - cd build
+            - |
+              cmake -G Ninja .. \
+                -DCMAKE_BUILD_TYPE=Release \
+                -DD_COMPILER=$PWD/../host-ldc/bin/ldmd2 \
+                -DMULTILIB=ON \
+                -DLDC_INSTALL_LTOPLUGIN=ON \
+                -DLDC_INSTALL_LLVM_RUNTIME_LIBS=ON
+            - ninja -j8 all ldc2-unittest all-test-runners
+            - bin/ldc2 -version
+            # Run LDC D unittests
+            - ctest --output-on-failure -R ldc2-unittest
+            # Run LIT testsuite
+            - ctest -V -R lit-tests
+            # Run DMD testsuite
+            - DMD_TESTSUITE_MAKE_ARGS=-j8 ctest -V -R dmd-testsuite
+            # Run defaultlib unittests & druntime stand-alone tests
+            - ctest -j8 --output-on-failure -E "ldc2-unittest|lit-tests|dmd-testsuite"