[BUG]: Pybind 11 not working with Intel C++ / DPC++ compilers (2022)

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Problem description

Apologies for a lack of detail in this bug report, i cant specify too much as i dont actually know whats causing the problem, only that it happens exclusively with pybind11.

The issue is that when using intels C++ or DPC++ compilers included in the oneapi toolkit version 2022.1.3 a module i work on compiles successfully but python throws a DLL not found error upon loading. To be clear, it compilers successfully, a .pyd is generated and it looks ok from the outside.

Just as a sanity check i decided to open up the module compiled in MSVC in a hex editor and search for its name (in this case GavinBackendDatasetUtils) and it was present in the file near the end. But in the Intel C++ / DPC++ compiler versions it can not be found in the .pyd file.

I have no clue if this is an issue on intels end or on pybind11s end. So i am posting this here while also following up with intel about the issue. If anyone knows of a fix or has encountered the same issue please reply with any additional information.

The image below is a screencapture of hex editor opening the MSVC compiled module showing the content which is NOT present in the Intel C++/ DPC++ compiled module.

Reproducible example code

No response

Start by reproducing the reported failure with Intel C++ or DPC++ from oneAPI 2022.1.3 and compare the generated .pyd with the MSVC build. There is no reproducible example, named file, or test in the report; done requires determining whether the failure is in pybind11 or the compiler and documenting a minimal reproduction or fix.