Added linux GHA file

.github/workflows/linux.yml

@@ -0,0 +1,57 @@
+name: Linux
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches: [master]
+concurrency:
+  group: ${{ github.workflow }}-${{ github.job }}-${{ github.ref }}
+  cancel-in-progress: true
+defaults:
+  run:
+    shell: bash -e -l {0}
+jobs:
+  build:
+    runs-on: ubuntu-24.04
+    name: ${{ matrix.sys.compiler }} ${{ matrix.sys.version }}
+    strategy:
+      fail-fast: false
+      matrix:
+        sys:
+        - {compiler: gcc, version: '11',}
+        - {compiler: gcc, version: '12'}
+        - {compiler: gcc, version: '13'}
+        - {compiler: gcc, version: '14'}
+        - {compiler: gcc, version: '11', novendor: 1}
+        - {compiler: gcc, version: '12', novendor: 1}
+        - {compiler: gcc, version: '13', novendor: 1}
+        - {compiler: gcc, version: '14', novendor: 1}
+        #- {compiler: clang, version: '19'}
+        - {compiler: clang, version: '20'}
+
+    steps:
+
+    - name: Install GCC
+      if: matrix.sys.compiler == 'gcc'
+      uses: egor-tensin/setup-gcc@v1
+      with:
+        version: ${{matrix.sys.version}}
+        platform: x64
+
+    - name: Install LLVM and Clang
+      if: matrix.sys.compiler == 'clang'
+      run: |
+        wget https://apt.llvm.org/llvm.sh
+        chmod +x llvm.sh
+        sudo ./llvm.sh ${{matrix.sys.version}}
+        sudo apt-get install -y clang-tools-${{matrix.sys.version}}
+        sudo update-alternatives --install /usr/bin/clang++                 clang++                     /usr/bin/clang++-${{matrix.sys.version}} 200
+        sudo update-alternatives --install /usr/bin/clang                       clang                         /usr/bin/clang-${{matrix.sys.version}} 200
+        sudo update-alternatives --install /usr/bin/clang-scan-deps   clang-scan-deps     /usr/bin/clang-scan-deps-${{matrix.sys.version}} 200
+        sudo update-alternatives --set clang /usr/bin/clang-${{matrix.sys.version}}
+        sudo update-alternatives --set clang++ /usr/bin/clang++-${{matrix.sys.version}}
+        sudo update-alternatives --set clang-scan-deps /usr/bin/clang-scan-deps-${{matrix.sys.version}}
+
+    - name: Build and run tests
+      uses: ./.github/workflows/unix_impl.yml
+

.github/workflows/osx.yml

@@ -0,0 +1,28 @@
+name: OSX
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches: [master]
+concurrency:
+  group: ${{ github.workflow }}-${{ github.job }}-${{ github.ref }}
+  cancel-in-progress: true
+defaults:
+  run:
+    shell: bash -e -l {0}
+jobs:
+  build:
+    runs-on: macos-${{ matrix.os }}
+    name: macos-${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+        - 14
+        - 15
+
+    steps:
+
+    - name: Build and run tests
+      uses: ./.github/workflows/unix_impl.yml
+

.github/workflows/unix_impl.yml

@@ -0,0 +1,49 @@
+name: "Common steps for Linux and OSX"
+runs:
+  steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Set conda environment
+      uses: mamba-org/setup-micromamba@v2
+      with:
+        environment-file: environment-dev.yml
+        cache-environment: true
+
+    - name: Install NOVENDOR dependencies
+      if: env.NOVENDOR == '1'
+      run: |
+        if [[ $USE_DEV_XTENSOR_R == 1 ]]; then
+            micromamba install xtensor==0.24.4 xsimd=10.0.0 cmake -c conda-forge;
+            git clone https://github.com/xtensor-stack/xtensor-r.git;
+            cd xtensor-r; mkdir build; cd build;
+            cmake -D CMAKE_INSTALL_PREFIX=$CONDA_PREFIX ..;
+            make install;
+            cd ../..;
+        else
+            micromamba install xtensor-r==0.14.0 -c conda-forge;
+        fi
+
+    - name: Build Xtensor.R package
+      run: |
+        R CMD build ${{ github.workspace }};
+
+    - name: Check R package
+      run: |
+        if [[ $NOVENDOR == 1 ]]; then
+            echo "Running R CMD check with --novendor argument";
+            echo "R CMD check --install-args=\"--configure-args='--novendor'\" ./xtensor_*.tar.gz"
+            R CMD check --install-args="--configure-args='--novendor'" ./xtensor_*.tar.gz || (
+             cat xtensor.Rcheck/00install.out &&
+             cat xtensor.Rcheck/00check.log   &&
+             cat xtensor.Rcheck/Rdlatex.log
+            );
+        else
+            echo "Running R CMD check with --as-cran argument.";
+            echo "R CMD check --as-cran ./xtensor_*.tar.gz"
+            R CMD check --as-cran ./xtensor_*.tar.gz || (
+             cat xtensor.Rcheck/00install.out &&
+             cat xtensor.Rcheck/00check.log   &&
+             cat xtensor.Rcheck/Rdlatex.log
+            );
+        fi