build multi arch

src/paddle_ocr/Dockerfile.build-paddle-cpu

@@ -99,17 +99,20 @@ RUN pip install -r python/requirements.txt || true
 RUN mkdir -p build
 WORKDIR /build/Paddle/build
 
-# Configure for CPU-only build
+# Configure for CPU-only ARM64 build
+# WITH_ARM=ON enables ARM NEON optimizations and disables x86-specific code (XBYAK, MKL)
 RUN cmake .. \
     -GNinja \
     -DCMAKE_BUILD_TYPE=Release \
     -DPY_VERSION=${PYTHON_VERSION} \
     -DWITH_GPU=OFF \
+    -DWITH_ARM=ON \
     -DWITH_TESTING=OFF \
     -DWITH_DISTRIBUTE=OFF \
     -DWITH_NCCL=OFF \
     -DWITH_MKL=OFF \
     -DWITH_MKLDNN=OFF \
+    -DWITH_XBYAK=OFF \
     -DON_INFER=OFF \
     -DWITH_PYTHON=ON \
     -DWITH_AVX=OFF \
@@ -121,8 +124,9 @@ RUN cmake .. \
 RUN --mount=type=cache,target=/ccache \
     ninja extern_gflags extern_glog extern_protobuf extern_zlib extern_eigen3
 
+# Note: extern_xbyak excluded - it's x86-only and disabled with WITH_ARM=ON
 RUN --mount=type=cache,target=/ccache \
-    ninja extern_openblas extern_pybind extern_utf8proc extern_xxhash extern_yaml extern_cryptopp extern_warpctc extern_warprnnt extern_gloo extern_xbyak
+    ninja extern_openblas extern_pybind extern_utf8proc extern_xxhash extern_yaml extern_cryptopp extern_warpctc extern_warprnnt extern_gloo
 
 # Build PaddlePaddle
 RUN --mount=type=cache,target=/ccache \