[Build] Android build issue on windows

[soham24]

Issue Description

I am trying to build ONNX with training enabled for Android on my Windows system using the following command:

./build.bat --android --android_sdk_path C:/myfiles/cvdl/onnx_local/onnxruntime/Android --android_ndk_path C:/Users/Soham/AppData/Local/Android/Sdk/ndk/26.0.10792818 --android_abi arm64-v8a --android_api 29 --enable_training_apis --enable_training --enable_lto --build_shared_lib --build_java --use_xnnpack --skip_tests --config RelWithDebInfo --cmake_generator Ninja

I have the necessary C++ packages installed via Visual Studio Installer. However, I am encountering an error during the build process. The error appears to be related to the Pybind11 build, even though I am targeting Android. I am unsure why Pybind11 is being built as part of this process. Am I missing something?

Urgency

Target Platform

Android

Build Script

./build.bat --android --android_sdk_path C:/myfiles/cvdl/onnx_local/onnxruntime/Android --android_ndk_path C:/Users/Soham/AppData/Local/Android/Sdk/ndk/26.0.10792818 --android_abi arm64-v8a --android_api 29 --enable_training_apis --enable_training --enable_lto --build_shared_lib --build_java --use_xnnpack --skip_tests --config RelWithDebInfo --cmake_generator Ninja

Error Output

In file included from C:/myfiles/cvdl/onnx_local/onnxruntime/build/Windows/RelWithDebInfo/_deps/pybind11_project-src/include/pybind11/detail/../attr.h:13:
In file included from C:/myfiles/cvdl/onnx_local/onnxruntime/build/Windows/RelWithDebInfo/_deps/pybind11_project-src/include/pybind11/detail/common.h:208:
In file included from C:/Users/Soham/AppData/Local/Programs/Python/Python312/Include/Python.h:12:
C:/Users/Soham/AppData/Local/Programs/Python/Python312/Include/pyconfig.h:59:10: fatal error: 'io.h' file not found
#include <io.h>

Visual Studio Version

2022

[edgchen1]

--enable_training implies --enable_pybind.

onnxruntime/tools/ci_build/build.py

Lines 2588 to 2589 in b9f3a5d

	if args.build_wheel or args.gen_doc or args.use_tvm or args.enable_training:
	args.enable_pybind = True

Try only using --enable_training_apis. See https://onnxruntime.ai/docs/get-started/training-on-device.html for more information about on-device training.

[soham24]

@edgchen1 thank you so much. it worked