Add first GitHub Actions workflow

This resembles what we had in Travis, albeit simpler. We can add more
cases if we want to in the future though.

Signed-off-by: Rodrigo Tobar <[email protected]>

.github/workflows/build-and-test.yaml

@@ -0,0 +1,66 @@
+name: Build and run tests
+on: [push, pull_request]
+
+env:
+  CI_BUILD_DIR: build
+  TEST_INPUTS_DIR: inputs
+  TEST_OUTPUTS_DIR: outputs
+  TEST_CONFIG_FILE: ci-tests.cfg
+  TEST_SIM_NAME: mini-SURFS
+  TEST_FIXED_SEED: 123456
+
+jobs:
+  build_and_test:
+    name: Build and test libprofit. OS=${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        include:
+          - os: ubuntu-latest
+            CXX: g++
+            omp: true
+          - os: ubuntu-latest
+            CXX: g++
+            poor_build: true
+          - os: ubuntu-latest
+            CXX: clang++
+            omp: true
+          - os: macos-latest
+            CXX: clang++
+            omp: false
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Install system dependencies (Linux)
+        env:
+          REQUIRED_DEPS: ninja-build libgsl-dev
+          OPTIONAL_DEPS: ${{ matrix.poor_build && 'libfftw3-dev opencl-headers' || '' }}
+        if: ${{ matrix.os == 'ubuntu-latest' }}
+        run: |
+          sudo apt install $REQUIRED_DEPS $OPTIONAL_DEPS
+
+      - name: Install system dependencies (MacOS)
+        if: ${{ matrix.os == 'macos-latest' }}
+        run: |
+          brew install gsl fftw
+
+      - name: Configure
+        env:
+          SHARK_NO_OPENMP: ${{ matrix.omp && 'OFF' || 'ON' }}
+          CMAKE_EXTRA_FLAGS: ${{ matrix.poor_build && '-DLIBPROFIT_NO_OPENCL=ON -DLIBPROFIT_NO_OPENMP=ON -DLIBPROFIT_NO_FFTW=ON -DLIBPROFIT_NO_SIMD=ON' || '' }}
+        run: |
+          cmake -B ${CI_BUILD_DIR} -G Ninja \
+            -DSHARK_NO_OPENMP=$SHARK_NO_OPENMP \
+            -DSHARK_TEST=ON \
+            $CMAKE_EXTRA_FLAGS
+
+      - name: Build
+        run: cmake --build ${CI_BUILD_DIR}
+
+      - name: Run unit tests
+        run: |
+          cd ${CI_BUILD_DIR}
+          ctest --output-on-failure