refactor cmake command

Author: mengdilin

.github/actions/build_cmake/action.yml

@@ -63,19 +63,25 @@ runs:
       shell: bash
       run: |
         eval "$(conda shell.bash hook)"
+
+        args=(
+          -DBUILD_TESTING=ON 
+          -DBUILD_SHARED_LIBS=ON 
+          -DFAISS_ENABLE_GPU=${{ inputs.gpu }} 
+          -DFAISS_ENABLE_RAFT=${{ inputs.raft }} 
+          -DFAISS_OPT_LEVEL=${{ inputs.opt_level }} 
+          -DFAISS_ENABLE_C_API=ON 
+          -DPYTHON_EXECUTABLE=$CONDA/bin/python 
+          -DCMAKE_BUILD_TYPE=Release 
+        )
+        if [ "${{ runner.arch }}" = "X64" ]; then
+          args+=(
+            -DBLA_VENDOR=Intel10_64_dyn 
+            -DCMAKE_CUDA_FLAGS=\"-gencode arch=compute_75,code=sm_75\"
+          )
+        fi
         conda activate
-        cmake -B build \
-              -DBUILD_TESTING=ON \
-              -DBUILD_SHARED_LIBS=ON \
-              -DFAISS_ENABLE_GPU=${{ inputs.gpu }} \
-              -DFAISS_ENABLE_RAFT=${{ inputs.raft }} \
-              -DFAISS_OPT_LEVEL=${{ inputs.opt_level }} \
-              -DFAISS_ENABLE_C_API=ON \
-              -DPYTHON_EXECUTABLE=$CONDA/bin/python \
-              -DCMAKE_BUILD_TYPE=Release \
-              -DBLA_VENDOR=Intel10_64_dyn \
-              -DCMAKE_CUDA_FLAGS="-gencode arch=compute_75,code=sm_75" \
-              .
+        cmake -B build "${args[@]}" .
         make -k -C build -j$(nproc)
     - name: C++ tests
       shell: bash