Add Android linker compatibility stubs

Author: Apricityx

scripts/patch_tfjava.py

@@ -24,7 +24,7 @@ def patch_module_pom(path: Path) -> None:
 def patch_build_sh(path: Path) -> None:
     text = path.read_text(encoding="utf-8")
     old = """# Allows us to use ccache with Bazel on Mac\nexport BAZEL_USE_CPP_ONLY_TOOLCHAIN=1\n\nexport BAZEL_VC=\"${VCINSTALLDIR:-}\"\nif [[ -d $BAZEL_VC ]]; then\n    # Work around compiler issues on Windows documented mainly in configure.py but also elsewhere\n    export BUILD_FLAGS=\"--copt=//arch:AVX `#--copt=//arch:AVX2` --copt=-DWIN32_LEAN_AND_MEAN --host_copt=-DWIN32_LEAN_AND_MEAN --copt=-DNOGDI --host_copt=-DNOGDI --copt=-D_USE_MATH_DEFINES --host_copt=-D_USE_MATH_DEFINES --define=override_eigen_strong_inline=true\"\n    # https://software.intel.com/en-us/articles/intel-optimization-for-tensorflow-installation-guide#wind_B_S\n    export PATH=$PATH:$(pwd)/bazel-tensorflow-core-api/external/mkl_windows/lib/\n    export PYTHON_BIN_PATH=$(which python.exe)\nelse\n    export BUILD_FLAGS=\"--copt=-msse4.1 --copt=-msse4.2 --copt=-mavx `#--copt=-mavx2 --copt=-mfma` --cxxopt=-std=c++14 --host_cxxopt=-std=c++14 --linkopt=-lstdc++ --host_linkopt=-lstdc++\"\n    export PYTHON_BIN_PATH=$(which python3)\nfi\n"""
-    new = """# Allows us to use ccache with Bazel on Mac, but Android needs Bazel's Android crosstool.\nif [[ \"${PLATFORM:-}\" != \"android-arm64\" ]]; then\n    export BAZEL_USE_CPP_ONLY_TOOLCHAIN=1\nfi\n\nexport BAZEL_VC=\"${VCINSTALLDIR:-}\"\nif [[ \"${PLATFORM:-}\" == \"android-arm64\" ]]; then\n    export BUILD_FLAGS=\"--crosstool_top=@androidndk//:default_crosstool --cpu=arm64-v8a --fat_apk_cpu=arm64-v8a --host_crosstool_top=@bazel_tools//tools/cpp:toolchain --copt=-DANDROID --cxxopt=-std=c++14 --host_cxxopt=-std=c++14 --cxxopt=-include --cxxopt=cstdint --host_cxxopt=-include --host_cxxopt=cstdint --copt=-Wno-error=array-parameter --host_copt=-Wno-error=array-parameter --copt=-Wno-error=array-bounds --host_copt=-Wno-error=array-bounds\"\n    export PYTHON_BIN_PATH=$(which python3)\nelif [[ -d $BAZEL_VC ]]; then\n    # Work around compiler issues on Windows documented mainly in configure.py but also elsewhere\n    export BUILD_FLAGS=\"--copt=//arch:AVX `#--copt=//arch:AVX2` --copt=-DWIN32_LEAN_AND_MEAN --host_copt=-DWIN32_LEAN_AND_MEAN --copt=-DNOGDI --host_copt=-DNOGDI --copt=-D_USE_MATH_DEFINES --host_copt=-D_USE_MATH_DEFINES --define=override_eigen_strong_inline=true\"\n    # https://software.intel.com/en-us/articles/intel-optimization-for-tensorflow-installation-guide#wind_B_S\n    export PATH=$PATH:$(pwd)/bazel-tensorflow-core-api/external/mkl_windows/lib/\n    export PYTHON_BIN_PATH=$(which python.exe)\nelse\n    export BUILD_FLAGS=\"--copt=-msse4.1 --copt=-msse4.2 --copt=-mavx `#--copt=-mavx2 --copt=-mfma` --cxxopt=-std=c++14 --host_cxxopt=-std=c++14 --linkopt=-lstdc++ --host_linkopt=-lstdc++\"\n    export PYTHON_BIN_PATH=$(which python3)\nfi\n"""
+    new = """# Allows us to use ccache with Bazel on Mac, but Android needs Bazel's Android crosstool.\nif [[ \"${PLATFORM:-}\" != \"android-arm64\" ]]; then\n    export BAZEL_USE_CPP_ONLY_TOOLCHAIN=1\nfi\n\nexport BAZEL_VC=\"${VCINSTALLDIR:-}\"\nif [[ \"${PLATFORM:-}\" == \"android-arm64\" ]]; then\n    export TF_ANDROID_COMPAT_LIB_DIR=\"$(pwd)/android-compat-libs\"\n    mkdir -p \"${TF_ANDROID_COMPAT_LIB_DIR}\"\n    printf 'INPUT(-lc)\\n' > \"${TF_ANDROID_COMPAT_LIB_DIR}/libpthread.so\"\n    printf 'INPUT(-lc)\\n' > \"${TF_ANDROID_COMPAT_LIB_DIR}/librt.so\"\n    export BUILD_FLAGS=\"--crosstool_top=@androidndk//:default_crosstool --cpu=arm64-v8a --fat_apk_cpu=arm64-v8a --host_crosstool_top=@bazel_tools//tools/cpp:toolchain --copt=-DANDROID --cxxopt=-std=c++14 --host_cxxopt=-std=c++14 --cxxopt=-include --cxxopt=cstdint --host_cxxopt=-include --host_cxxopt=cstdint --copt=-Wno-error=array-parameter --host_copt=-Wno-error=array-parameter --copt=-Wno-error=array-bounds --host_copt=-Wno-error=array-bounds --linkopt=-L${TF_ANDROID_COMPAT_LIB_DIR}\"\n    export PYTHON_BIN_PATH=$(which python3)\nelif [[ -d $BAZEL_VC ]]; then\n    # Work around compiler issues on Windows documented mainly in configure.py but also elsewhere\n    export BUILD_FLAGS=\"--copt=//arch:AVX `#--copt=//arch:AVX2` --copt=-DWIN32_LEAN_AND_MEAN --host_copt=-DWIN32_LEAN_AND_MEAN --copt=-DNOGDI --host_copt=-DNOGDI --copt=-D_USE_MATH_DEFINES --host_copt=-D_USE_MATH_DEFINES --define=override_eigen_strong_inline=true\"\n    # https://software.intel.com/en-us/articles/intel-optimization-for-tensorflow-installation-guide#wind_B_S\n    export PATH=$PATH:$(pwd)/bazel-tensorflow-core-api/external/mkl_windows/lib/\n    export PYTHON_BIN_PATH=$(which python.exe)\nelse\n    export BUILD_FLAGS=\"--copt=-msse4.1 --copt=-msse4.2 --copt=-mavx `#--copt=-mavx2 --copt=-mfma` --cxxopt=-std=c++14 --host_cxxopt=-std=c++14 --linkopt=-lstdc++ --host_linkopt=-lstdc++\"\n    export PYTHON_BIN_PATH=$(which python3)\nfi\n"""
     text = replace_once(text, old, new, path)
     path.write_text(text, encoding="utf-8")