Enabling debugging in the Arduino IDE 2#1275
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The necessary changes to enable debugging are relatively minimal:
If you want to play around with it, check out the quickstart start guide for CNANO boards.
The most intrusive change is to disable the
-mrelaxoption, since this optimization plays havoc with debugging information: MCUdude/MegaCoreX#216If you really want to support this option, it may be better to enable it via platform.local.txt or by implementing my pragma-mechanism.
I would have loved to disable LTO, because this removes debug information about class structures, and it removes information about variables being global. However, I will rather wait for a new GCC version to be used, which fixes these bugs.