Several times in past years I've noticed Kinetis start compiling all my C code, not just the modified files. I tracked it down to Builder Type was being set to External Build, which I would never do deliberately. It was easy to repair, but hard to find.
Hi @Frank_Z
I understand that you are not longer having this issue, and yes, that is an interesting trick to save time. Just to add something else to this post: Our collague Erich Styger has a post regarding how external builder in eclipse solved the issue. Eclipse Project ‘Refresh Policy’: Broken Incremental Build with External Make
Best regards,
Diego