well, you should first trace which ppc*** is used.
That is you see the IDE call fpc -... and fpc uses some ppc for that.
There must be some way to specify a flag that it will tell you the ppcxxx used. Then, you can run this, and check which version it has.
You can also use -va
This will display ALL files accessed, including which fpc.cfg
It will be a huge amount of output, so redirect to a file.
In Lazarus, you must do "Copy all shown and hidden msgs"