Only setup i386 support as needed

Author: AntoinePrv

.github/workflows/linux.yml

@@ -33,41 +33,48 @@ jobs:
           - { compiler: 'clang', version: '18', flags: '',                   preset: 'avx_128' }
           - { compiler: 'clang', version: '18', flags: '',                   preset: 'avx2_128' }
     steps:
-    - name: Setup compiler
+    - name: Setup GCC compiler
       if: ${{ matrix.sys.compiler == 'gcc' }}
       run: |
         GCC_VERSION=${{ matrix.sys.version }}
         sudo apt-get update
         sudo apt-get --no-install-suggests --no-install-recommends install g++-$GCC_VERSION
-        sudo dpkg --add-architecture i386
-        sudo add-apt-repository ppa:ubuntu-toolchain-r/test
-        sudo apt-get update
-        sudo apt-get --no-install-suggests --no-install-recommends install gcc-$GCC_VERSION-multilib g++-$GCC_VERSION-multilib linux-libc-dev:i386
-        CC=gcc-$GCC_VERSION
-        echo "CC=$CC" >> $GITHUB_ENV
-        CXX=g++-$GCC_VERSION
-        echo "CXX=$CXX" >> $GITHUB_ENV
-    - name: Setup compiler
+        # Setup i386 as needed
+        if [[ '${{ matrix.sys.flags }}' == 'i386' ]]; then
+          sudo dpkg --add-architecture i386
+          sudo add-apt-repository ppa:ubuntu-toolchain-r/test
+          sudo apt-get update
+          sudo apt-get --no-install-suggests --no-install-recommends install \
+            gcc-$GCC_VERSION-multilib g++-$GCC_VERSION-multilib linux-libc-dev:i386
+        fi
+        # Export compiler as environment var
+        echo "CC=gcc-$GCC_VERSION" >> $GITHUB_ENV
+        echo "CXX=g++-$GCC_VERSION" >> $GITHUB_ENV
+
+    - name: Setup Clang compiler
       if: ${{ matrix.sys.compiler == 'clang' }}
       run: |
         LLVM_VERSION=${{ matrix.sys.version }}
         sudo apt-get update || exit 1
         sudo apt-get --no-install-suggests --no-install-recommends install clang-$LLVM_VERSION || exit 1
         sudo apt-get --no-install-suggests --no-install-recommends install g++ g++-multilib || exit 1
         sudo ln -s /usr/include/asm-generic /usr/include/asm
-        CC=clang-$LLVM_VERSION
-        echo "CC=$CC" >> $GITHUB_ENV
-        CXX=clang++-$LLVM_VERSION
-        echo "CXX=$CXX" >> $GITHUB_ENV
+        # Export compiler as environment var
+        echo "CC=clang-$LLVM_VERSION" >> $GITHUB_ENV
+        echo "CXX=clang++-$LLVM_VERSION" >> $GITHUB_ENV
+
     - name: Checkout xsimd
       uses: actions/checkout@v6
+
     - name: Install mamba
       uses: mamba-org/setup-micromamba@v3
       with:
         environment-file: environment.yml
+
     - name: Setup SDE
       if: startswith(matrix.sys.preset, 'avx512')
       run: sh install_sde.sh
+
     - name: Configure build
       env:
         CC: ${{ env.CC }}
@@ -97,24 +104,25 @@ jobs:
               $CMAKE_EXTRA_ARGS \
               -DCMAKE_CXX_FLAGS='$CXX_FLAGS' \
               -G Ninja
+
     - name: Build
-      run: cmake --build _build
+      run: cmake --build _build --parallel
     - name: Test
       run: |
         # Set CPU feature test expectations, 0 is explicit absence of the feature
         export XSIMD_TEST_CPU_ASSUME_NEON64="0"
         export XSIMD_TEST_CPU_ASSUME_RVV="0"
         export XSIMD_TEST_CPU_ASSUME_VSX="0"
         export XSIMD_TEST_CPU_ASSUME_VXE="0"
-        cd _build/test
+
         if echo '${{ matrix.sys.preset }}' | grep -q 'avx512' ; then
           # Running with emulation, must have AVX512, lower tier are checked by implications in tests
           export XSIMD_TEST_CPU_ASSUME_AVX512F="1"
-          ../../sde-external-9.48.0-2024-11-25-lin/sde64 -tgl -- ./test_xsimd
+          ./sde-external-9.48.0-2024-11-25-lin/sde64 -tgl -- ./_build/test/test_xsimd
         else
           export XSIMD_TEST_CPU_ASSUME_SSE4_2=$(grep -q 'sse4_2' /proc/cpuinfo && echo "1" || echo "0")
           export XSIMD_TEST_CPU_ASSUME_AVX=$(grep -q 'avx' /proc/cpuinfo && echo "1" || echo "0")
           export XSIMD_TEST_CPU_ASSUME_AVX512F=$(grep -q 'avx512f' /proc/cpuinfo && echo "1" || echo "0")
           export XSIMD_TEST_CPU_ASSUME_MANUFACTURER="intel,amd"
-          ./test_xsimd
+          ./_build/test/test_xsimd
         fi