avrdude 6.3-20190619 aka avrdude-arduino17 source code

can somebody give me a hint where I find the Source for avrdude 6.3-20190619 aka avrdude-arduino17.
I tried original 6.3. version, but it looks like this is not the same as used in arduino IDE (for example in ide 1.8.13)

thx in advance,

This is the source code of the version of AVRDUDE used by Arduino:

(@facchinm is one of Arduino's lead developers)

The build script is here:

(note that there are some patches)

thx, it works as expected!

You're welcome. I'm glad if I was able to be of assistance. Enjoy!