xtensor-stack · serge-sans-paille · Mar 27, 2026 · Mar 27, 2026
diff --git a/.github/workflows/android.yml b/.github/workflows/android.yml
@@ -25,12 +25,10 @@ jobs:
           TARGET: ${{ matrix.target }}
           API: ${{ matrix.api }}
         run: |
-          mkdir _build
           NDK="$($ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager --list_installed | sed -E 's/( +[|] +)/|/g;s/ +$//' | grep '^  ndk' | cut -d '|' -f 4 | sort | head -n1)"
-          cd _build && \
-            cmake .. -DCMAKE_TOOLCHAIN_FILE=$ANDROID_HOME/$NDK/build/cmake/android.toolchain.cmake \
-                     -DANDROID_ABI=$ABI \
-                     -DANDROID_PLATFORM=android-$API \
-                     -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DCMAKE_BUILD_TYPE=Release
-
-          cmake --build . --verbose
+          cmake -B _build \
+                -DCMAKE_TOOLCHAIN_FILE=$ANDROID_HOME/$NDK/build/cmake/android.toolchain.cmake \
+                -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON \
+                -DANDROID_ABI=$ABI -DANDROID_PLATFORM=android-$API \
+                -DCMAKE_BUILD_TYPE=Release
+          cmake --build _build --verbose
diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
@@ -8,13 +8,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - name: Install dependencies
-      run: |
-        sudo apt install g++
     - name: Setup
-      run: |
-        mkdir _build
-        cd _build && cmake .. -DBUILD_BENCHMARK=ON -DBUILD_EXAMPLES=ON -DCMAKE_BUILD_TYPE=Release
+      run: cmake -B _build -DBUILD_BENCHMARK=ON -DBUILD_EXAMPLES=ON -DCMAKE_BUILD_TYPE=Release
     - name: Build
       run: cmake --build _build
     - name: Testing sequential

diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
@@ -13,17 +13,14 @@ jobs:
     - name: Checkout xsimd
       uses: actions/checkout@v3
     - name: Configure build
-      run: |
-        mkdir _build && cd _build
-        cmake  .. -DCMAKE_BUILD_TYPE=Release \
-                  -DCMAKE_INSTALL_PREFIX=_install
+      run: cmake -B _build -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=_install
     - name: Build
       run: cmake --build _build --target install
     - name: Check install
       run: |
         mkdir _install_build && cd _install_build
         cp ${{ github.workspace }}/.github/cmake-test/* .
-        ls $PWD/../_build/_install/share/cmake/xsimd
-        cmake . -DCMAKE_PREFIX_PATH=$PWD/../_build/_install/share/cmake/xsimd
+        ls $PWD/../_install/share/cmake/xsimd
+        cmake . -DCMAKE_PREFIX_PATH=$PWD/../_install/share/cmake/xsimd
         cmake --build .
 
diff --git a/.github/workflows/cross-arm.yml b/.github/workflows/cross-arm.yml
@@ -35,11 +35,15 @@ jobs:
       uses: actions/checkout@v3
     - name: Setup
       run: |
-        mkdir _build
-        cd _build && cmake .. -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DBUILD_BENCHMARK=${{ matrix.target.full }} -DBUILD_EXAMPLES=${{ matrix.target.full }} -DCMAKE_BUILD_TYPE=Release -DTARGET_ARCH=generic -DCMAKE_C_FLAGS="-march=${{ matrix.target.arch }} ${{ matrix.target.flags }}" -DCMAKE_CXX_FLAGS="-march=${{ matrix.target.arch }} ${{ matrix.target.flags }}" -DCMAKE_TOOLCHAIN_FILE=${{ github.workspace }}/.github/toolchains/${{ matrix.sys.compiler }}-${{ matrix.target.dir }}.cmake
+        cmake -B _build \
+              -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DBUILD_BENCHMARK=${{ matrix.target.full }} \
+              -DBUILD_EXAMPLES=${{ matrix.target.full }} -DCMAKE_BUILD_TYPE=Release \
+              -DTARGET_ARCH=generic \
+              -DCMAKE_C_FLAGS="-march=${{ matrix.target.arch }} ${{ matrix.target.flags }}" \
+              -DCMAKE_CXX_FLAGS="-march=${{ matrix.target.arch }} ${{ matrix.target.flags }}" \
+              -DCMAKE_TOOLCHAIN_FILE=${{ github.workspace }}/.github/toolchains/${{ matrix.sys.compiler }}-${{ matrix.target.dir }}.cmake
     - name: Build
       run: cmake --build _build
     - name: Testing xsimd
-      run: |
-        qemu-${{ matrix.target.platform }} -L /usr/${{ matrix.target.dir}}/ ./test/test_xsimd
+      run: qemu-${{ matrix.target.platform }} -L /usr/${{ matrix.target.dir}}/ ./test/test_xsimd
       working-directory: ${{ github.workspace }}/_build
diff --git a/.github/workflows/cross-ppc.yml b/.github/workflows/cross-ppc.yml
@@ -34,11 +34,15 @@ jobs:
       uses: actions/checkout@v3
     - name: Setup
       run: |
-        mkdir _build
-        cd _build && cmake .. -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DBUILD_BENCHMARK=${{ matrix.target.full }} -DBUILD_EXAMPLES=${{ matrix.target.full }} -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_FLAGS="${{ matrix.target.flags }}" -DCMAKE_CXX_FLAGS="${{ matrix.target.flags }}" -DCMAKE_TOOLCHAIN_FILE=${{ github.workspace }}/.github/toolchains/${{ matrix.sys.compiler }}-${{ matrix.target.dir }}.cmake
+        cmake -B _build \
+              -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON \
+              -DBUILD_BENCHMARK=${{ matrix.target.full }} -DBUILD_EXAMPLES=${{ matrix.target.full }} \
+              -DCMAKE_BUILD_TYPE=Release \
+              -DCMAKE_C_FLAGS="${{ matrix.target.flags }}" \
+              -DCMAKE_CXX_FLAGS="${{ matrix.target.flags }}" \
+              -DCMAKE_TOOLCHAIN_FILE=${{ github.workspace }}/.github/toolchains/${{ matrix.sys.compiler }}-${{ matrix.target.dir }}.cmake
     - name: Build
       run: cmake --build _build --verbose -j1
     - name: Testing xsimd
-      run: |
-        qemu-${{ matrix.target.platform }} -cpu power10 -L /usr/${{ matrix.target.dir}}/ ./test/test_xsimd
+      run: qemu-${{ matrix.target.platform }} -cpu power10 -L /usr/${{ matrix.target.dir}}/ ./test/test_xsimd
       working-directory: ${{ github.workspace }}/_build
diff --git a/.github/workflows/cross-sve.yml b/.github/workflows/cross-sve.yml
@@ -30,11 +30,16 @@ jobs:
       uses: actions/checkout@v3
     - name: Setup
       run: |
-        mkdir _build
-        cd _build && cmake .. -GNinja -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DCMAKE_BUILD_TYPE=Release -DTARGET_ARCH=generic -DCMAKE_C_FLAGS="-march=armv8-a+sve -msve-vector-bits=${{ matrix.vector_bits }}" -DCMAKE_CXX_FLAGS="-march=armv8-a+sve -msve-vector-bits=${{ matrix.vector_bits }}" -DCMAKE_TOOLCHAIN_FILE=${{ github.workspace }}/.github/toolchains/gcc-aarch64-linux-gnu.cmake
+        cmake -B _build \
+              -GNinja \
+              -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON \
+              -DCMAKE_BUILD_TYPE=Release \
+              -DTARGET_ARCH=generic \
+              -DCMAKE_C_FLAGS="-march=armv8-a+sve -msve-vector-bits=${{ matrix.vector_bits }}" \
+              -DCMAKE_CXX_FLAGS="-march=armv8-a+sve -msve-vector-bits=${{ matrix.vector_bits }}" \
+              -DCMAKE_TOOLCHAIN_FILE=${{ github.workspace }}/.github/toolchains/gcc-aarch64-linux-gnu.cmake
     - name: Build
       run: cmake --build _build
     - name: Testing xsimd
-      run: |
-        qemu-aarch64 --cpu max,sve${{ matrix.vector_bits }}=on -L /usr/aarch64-linux-gnu/ ./test/test_xsimd
+      run: qemu-aarch64 --cpu max,sve${{ matrix.vector_bits }}=on -L /usr/aarch64-linux-gnu/ ./test/test_xsimd
       working-directory: ${{ github.workspace }}/_build
diff --git a/.github/workflows/cxx-no-exceptions.yml b/.github/workflows/cxx-no-exceptions.yml
@@ -5,13 +5,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - name: Install dependencies
-      run: |
-          sudo apt install g++
     - name: Setup
-      run: |
-        mkdir _build
-        cd _build && cmake .. -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_FLAGS=-fno-exceptions
+      run: cmake -B _build -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_FLAGS=-fno-exceptions
     - name: Build
       run: cmake --build _build
 
diff --git a/.github/workflows/cxx-versions.yml b/.github/workflows/cxx-versions.yml
@@ -11,13 +11,8 @@ jobs:
         cxx-version: [14, 17, 20]
     steps:
     - uses: actions/checkout@v3
-    - name: Install dependencies
-      run: |
-          sudo apt install g++
     - name: Setup
-      run: |
-        mkdir _build
-        cd _build && cmake .. -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_STANDARD=${{matrix.cxx-version}}
+      run: cmake -B _build -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_STANDARD=${{matrix.cxx-version}}
     - name: Build
       run: cmake --build _build
 
diff --git a/.github/workflows/emulated.yml b/.github/workflows/emulated.yml
@@ -25,11 +25,10 @@ jobs:
         environment-file: environment.yml
     - name: Setup GCC compiler
       if: ${{ matrix.sys.compiler == 'g++' }}
-      run: |
-        echo "CXXFLAGS=-Wno-noexcept-type -Wno-stringop-overflow -Wno-maybe-uninitialized" >> $GITHUB_ENV
+      run: echo "CXXFLAGS=-Wno-noexcept-type -Wno-stringop-overflow -Wno-maybe-uninitialized" >> $GITHUB_ENV
     - name: Configure build
       run: |
-        cmake -B_build \
+        cmake -B _build \
           -DBUILD_TESTS=ON \
           -DBUILD_BENCHMARK=ON \
           -DBUILD_EXAMPLES=ON \

diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
@@ -105,23 +105,21 @@ jobs:
         # Cheap way of spotting uninitialized read
         CXX_FLAGS="$CXX_FLAGS -ftrivial-auto-var-init=pattern"
 
-        mkdir _build
-        cd _build
-        cmake  .. -DBUILD_TESTS=ON \
-                  -DBUILD_BENCHMARK=ON \
-                  -DBUILD_EXAMPLES=ON \
-                  -DCMAKE_BUILD_TYPE=Release \
-                  -DCMAKE_C_COMPILER=$CC \
-                  -DCMAKE_CXX_COMPILER=$CXX \
-                  $CMAKE_EXTRA_ARGS \
-                  -DCMAKE_CXX_FLAGS='$CXX_FLAGS' \
-                  -G Ninja
+        cmake -B _build \
+              -DBUILD_TESTS=ON \
+              -DBUILD_BENCHMARK=ON \
+              -DBUILD_EXAMPLES=ON \
+              -DCMAKE_BUILD_TYPE=Release \
+              -DCMAKE_C_COMPILER=$CC \
+              -DCMAKE_CXX_COMPILER=$CXX \
+              $CMAKE_EXTRA_ARGS \
+              -DCMAKE_CXX_FLAGS='$CXX_FLAGS' \
+              -G Ninja
     - name: Build
-      run: ninja -C _build
+      run: cmake --build _build
     - name: Test
       run: |
-        cd _build
-        cd test
+        cd _build/test
         if echo '${{ matrix.sys.flags }}' | grep -q 'avx512' ; then
           ../../sde-external-9.48.0-2024-11-25-lin/sde64 -tgl -- ./test_xsimd
         else

diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
@@ -16,9 +16,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Setup
-      run: |
-        mkdir _build
-        cd _build && cmake .. -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DBUILD_BENCHMARK=ON -DBUILD_EXAMPLES=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_OSX_ARCHITECTURES="arm64;x86_64"
+      run: cmake -B _build -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DBUILD_BENCHMARK=ON -DBUILD_EXAMPLES=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_OSX_ARCHITECTURES="arm64;x86_64"
     - name: Build
       run: cmake --build _build --verbose
     - name: Testing sequential

diff --git a/.github/workflows/sanitizer.yml b/.github/workflows/sanitizer.yml
@@ -30,18 +30,15 @@ jobs:
           sudo ./llvm.sh ${{ matrix.llvm-version }}
     - name: Configure build
       run: |
-        mkdir _build
-        cd _build
-        cmake  .. -DBUILD_TESTS=ON \
-                  -DBUILD_BENCHMARK=ON \
-                  -DBUILD_EXAMPLES=ON \
-                  -DDOWNLOAD_DOCTEST=ON \
-                  -DCMAKE_BUILD_TYPE=Debug \
-                  -DCMAKE_CXX_FLAGS='-f${{ matrix.flags }} -O0 -g -fno-inline' \
-                  -G Ninja
+        cmake -B_build \
+              -DBUILD_TESTS=ON \
+              -DBUILD_BENCHMARK=ON \
+              -DBUILD_EXAMPLES=ON \
+              -DDOWNLOAD_DOCTEST=ON \
+              -DCMAKE_BUILD_TYPE=Debug \
+              -DCMAKE_CXX_FLAGS='-f${{ matrix.flags }} -O0 -g -fno-inline' \
+              -G Ninja
     - name: Build
-      run: ninja -C _build
+      run: cmake --build _build
     - name: Test
-      run: |
-        cd _build/test
-        ./test_xsimd
+      run: ./_build/test/test_xsimd
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
@@ -43,16 +43,12 @@ jobs:
     - name: Checkout xsimd
       uses: actions/checkout@v3
     - name: Setup
-      run: |
-        mkdir _build
-        cd _build && cmake .. -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DBUILD_BENCHMARK=ON -DBUILD_EXAMPLES=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_FLAGS="${{ matrix.sys.flags }}" -G Ninja
+      run: cmake -B _build -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DBUILD_BENCHMARK=ON -DBUILD_EXAMPLES=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_FLAGS="${{ matrix.sys.flags }}" -G Ninja
     - name: Build
-      run: |
-        cd _build && cmake --build .
+      run: cmake --build _build
     - name: Testing xsimd
       if: ${{ !startsWith(matrix.sys.set, 'AVX512') }}
-      run: |
-        cd _build && ./test/test_xsimd
+      run: ./_build/test/test_xsimd
 
   build-windows-mingw:
     name: 'MSYS2 ${{ matrix.msystem }}'
@@ -82,15 +78,11 @@ jobs:
       - name: Checkout xsimd
         uses: actions/checkout@v2
       - name: Configure
-        run: |
-          mkdir _build
-          cd _build
-          cmake .. -DBUILD_TESTS=ON -DBUILD_BENCHMARK=ON -DBUILD_EXAMPLES=ON -DCMAKE_BUILD_TYPE=Release -DDOWNLOAD_DOCTEST=ON -G Ninja
+        run: cmake -B _build -DBUILD_TESTS=ON -DBUILD_BENCHMARK=ON -DBUILD_EXAMPLES=ON -DCMAKE_BUILD_TYPE=Release -DDOWNLOAD_DOCTEST=ON -G Ninja
       - name: Build
-        run: ninja -C _build
+        run: cmake --build _build
       - name: Test
-        run: |
-          cd _build && ./test/test_xsimd
+        run: ./_build/test/test_xsimd
 
   build-windows-arm64:
     name: 'MSVC arm64'
@@ -110,12 +102,8 @@ jobs:
     - name: Checkout xsimd
       uses: actions/checkout@v3
     - name: Setup
-      run: |
-        mkdir _build
-        cd _build && cmake .. -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DBUILD_BENCHMARK=ON -DBUILD_EXAMPLES=ON -DCMAKE_BUILD_TYPE=Release -G Ninja
+      run: cmake -B _build -DBUILD_TESTS=ON -DDOWNLOAD_DOCTEST=ON -DBUILD_BENCHMARK=ON -DBUILD_EXAMPLES=ON -DCMAKE_BUILD_TYPE=Release -G Ninja
     - name: Build
-      run: |
-        cd _build && cmake --build .
+      run: cmake --build _build
     - name: Testing xsimd
-      run: |
-        cd _build && ./test/test_xsimd
+      run: ./_build/test/test_xsimd