[Feature]: Re-hipify changed source files

[stepeos]

Suggestion Description

Hi!

from my understanding, the current setup only copies cuda project source files to hip output directory with

hipify_python.py:1130

shutil.copytree(project_directory, output_directory)

and then skips hipifying all files that are already hipifyed.

Now I assume this was intented to be used as one-time submit command in cmake. The problem I see with this is what happens if I make changes to my cuda source files?
The current result is that the files are skipped as they are seen as already hipifyed:
in hipify_python.py::preprocessor, the hipified source file is read and compared against (you guessed it) the hipified source file. So you re-hipify the source file and detect changes but from my understanding the hip source file will not ever change since changes to cuda source files are not detected.

One can circumvent this by always copying the cuda source tree by commenting out the if-condition.

So my question is why not make it default behavior or an override flag or more checks for such source file changes?

Operating System

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GPU

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ROCm Component

No response

[stepeos]

Additionally, I would suggest to create custom cmake targets for all cuda source files so that the hipify is automatically invoked whenver a CUDA file is touched. Otherwise, even with the CUDA source file change detection mechanism, one still has to manually re-configure cmake to have hipify re-run.