Simplify fix

Author: AntoinePrv

.github/workflows/emulated.yml

@@ -27,22 +27,17 @@ jobs:
       if: ${{ matrix.sys.compiler == 'g++' }}
       run: |
         echo "CXXFLAGS=-Wno-noexcept-type -Wno-stringop-overflow -Wno-maybe-uninitialized" >> $GITHUB_ENV
-    - name: Set emulated arch
-      run: |
-        SIZE="${{ matrix.sys.size }}"
-        echo "add_compile_definitions(\"XSIMD_DEFAULT_ARCH=emulated<${SIZE}>\")" >  /tmp/emulated.cmake
-        echo "add_compile_definitions(XSIMD_WITH_EMULATED=1)"                    >> /tmp/emulated.cmake
     - name: Configure build
       run: |
+        EMULATED_FLAGS='-DXSIMD_DEFAULT_ARCH=emulated<${{ matrix.sys.size }}> -DXSIMD_WITH_EMULATED=1'
         cmake -B_build \
           -DBUILD_TESTS=ON \
           -DBUILD_BENCHMARK=ON \
           -DBUILD_EXAMPLES=ON \
           -DCMAKE_BUILD_TYPE=Release \
           -DCMAKE_CXX_COMPILER=${{ matrix.sys.compiler }} \
           -DXSIMD_ENABLE_WERROR=ON \
-          -DCMAKE_PROJECT_INCLUDE=/tmp/emulated.cmake \
-          -DCMAKE_CXX_FLAGS="$CXXFLAGS" \
+          -DCMAKE_CXX_FLAGS="$EMULATED_FLAGS $CXXFLAGS" \
           -GNinja
     - name: Build
       run: ninja -C _build