strip symbol when linking

[pytorchbot]

Summary:
Refer to https://sourceware.org/binutils/docs/binutils/strip.html
command to build for android

rm -rf cmake-android-out && mkdir cmake-android-out

cmake -DBUCK2="$BUCK" \
    -DCMAKE_INSTALL_PREFIX=cmake-android-out \
    -DCMAKE_TOOLCHAIN_FILE="${ANDROID_NDK}/build/cmake/android.toolchain.cmake" \
    -DANDROID_ABI="arm64-v8a" \
    -DANDROID_PLATFORM=android-29 \
    -DCMAKE_BUILD_TYPE=Release \
    -DEXECUTORCH_BUILD_EXTENSION_MODULE=ON \
    -DEXECUTORCH_BUILD_EXTENSION_DATA_LOADER=ON \
    -DEXECUTORCH_BUILD_CUSTOM=ON \
    -DEXECUTORCH_BUILD_OPTIMIZED=ON \
    -DEXECUTORCH_BUILD_QUANTIZED=ON \
    -DEXECUTORCH_BUILD_XNNPACK=ON \
    -DEXECUTORCH_ENABLE_LOGGING=ON \
    -Bcmake-android-out .

cmake --build cmake-android-out -j16 --target install --config Release

cmake -DBUCK2="$BUCK" \
    -DCMAKE_INSTALL_PREFIX=cmake-android-out \
    -DCMAKE_TOOLCHAIN_FILE="${ANDROID_NDK}/build/cmake/android.toolchain.cmake" \
    -DANDROID_ABI="arm64-v8a" \
    -DANDROID_PLATFORM=android-23 \
    -DCMAKE_BUILD_TYPE=Release \
    -DEXECUTORCH_BUILD_CUSTOM=ON \
    -DEXECUTORCH_BUILD_OPTIMIZED=ON \
    -DEXECUTORCH_BUILD_XNNPACK=ON \
    -DEXECUTORCH_ENABLE_LOGGING=ON \
    -DEXECUTORCH_USE_TIKTOKEN=ON \
    -Bcmake-android-out/${dir} \
    ${dir}

cmake --build cmake-android-out/${dir} -j16 --config Release

(executorch) chenlai@chenlai-mbp executorch % du -sh cmake-android-out/examples/models/llama2/*
 44K	cmake-android-out/examples/models/llama2/CMakeCache.txt
2.2M	cmake-android-out/examples/models/llama2/CMakeFiles
 76K	cmake-android-out/examples/models/llama2/Makefile
4.0K	cmake-android-out/examples/models/llama2/cmake_install.cmake
4.0K	cmake-android-out/examples/models/llama2/compile_commands.json
4.9M	cmake-android-out/examples/models/llama2/custom_ops
736K	cmake-android-out/examples/models/llama2/lib
 54M	cmake-android-out/examples/models/llama2/llama_main
 16K	cmake-android-out/examples/models/llama2/options-pinned.h
 11M	cmake-android-out/examples/models/llama2/runner
151M	cmake-android-out/examples/models/llama2/third-party

Reviewed By: lucylq

Differential Revision: D56450794

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/3269

• 📄 Preview Python docs built from this PR

Note: Links to docs will display an error until the docs builds have been completed.

❌ 3 New Failures

As of commit 7b1cf49 with merge base d3326a2 ():

NEW FAILURES - The following jobs have failed:

• pull / test-llama-runner-linux (fp32, cmake, portable) / linux-job (gh)
  RuntimeError: Command docker exec -t 2fde0fc364501ebeffe2d604007f4ab02e5e64d3083ab98a3f8880f2ccc14259 /exec failed with exit code 1
• pull / test-llama-runner-linux (fp32, cmake, xnnpack) / linux-job (gh)
  RuntimeError: Command docker exec -t eb6d421fa3ea0a8a5fe054924a3b3deea17c918a808c6508c039d03112ca68b4 /exec failed with exit code 1
• pull / test-llama-runner-linux-android (cmake) / linux-job (gh)
  RuntimeError: Command docker exec -t df3d2497f85d5dbb276c8c208531de7f4be3f2e69e88d7ba773e19970f02fec8 /exec failed with exit code 1

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