Share downloaded ort with ort-extensions

[baijumeswani]

So far, ort-extensions and ort both download ort to build.

With this pull-request, ort-genai can share the downloaded ort header dir with ort-extensions.

[skyline75489]

From what I can tell, the exact version of ORT downloaded by ort-extension is NOT the same as the one download by GenAI, is this going to be a problem?

[baijumeswani]

From what I can tell, the exact version of ORT downloaded by ort-extension is NOT the same as the one download by GenAI, is this going to be a problem?

It should not matter. ort lib api is backwards compatible and ort-extensions only uses header file of ort for building. So, if any problems, it can be caught at compile time.

[skyline75489]

Is it possible to prevent onnxruntime-extension from downloading its own ORT at all? Seems that ONNXRUNTIME_PKG_DIR would help. We probably need more tweak for Android and iOS, but at least it's a start.

See: https://github.com/microsoft/onnxruntime-extensions/blob/6b94f4d7a597f0199f3e44d020d601d408605736/cmake/ext_ortlib.cmake#L4

[skyline75489]

Oh I was mistaken. Setting ONNXRUNTIME_INCLUDE_DIR would also prevent ortx from downloading ORT. Nice!

See: https://github.com/microsoft/onnxruntime-extensions/blob/6b94f4d7a597f0199f3e44d020d601d408605736/CMakeLists.txt#L297

[baijumeswani]

Thanks for the review :)