"Optimize for Debugging" results in link errors

Development Tools IDE 2.x
1

Environment:

Macbook Air; Apple M2; Sequoia 15.5
Version: 2.3.6
Date: 2025-04-09T11:22:51.016Z
CLI Version: 1.2.0

I am compiling OnStepX (GitHub - hjd1964/OnStepX) and uploading to an ESP32S3 Devkit.
You need to make only one change for the ESP32S3 hardware in the config.h file: Line25:#define SERIAL_B_BAUD_DEFAULT OFF
It runs successfully on the hardware.

To prepare for JTAG debugging, I select the "Optimize for Debugging" in the Sketch dropdown.
This results in the following errors in linking:

/Users/jarchbold/Library/Arduino15/packages/esp32/tools/esp-x32/2411/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld: /Users/jarchbold/Library/Caches/arduino/sketches/73C5D897EE8597E32A48D0086FB30EE2/sketch/src/lib/nv/NvBase.cpp.o:(.rodata._ZTV18NonVolatileStorage[_ZTV18NonVolatileStorage]+0x18): undefined reference to `_ZN18NonVolatileStorage15readFromStorageEt'
/Users/jarchbold/Library/Arduino15/packages/esp32/tools/esp-x32/2411/bin/../lib/gcc/xtensa-esp-elf/14.2.0/../../../../xtensa-esp-elf/bin/ld: /Users/jarchbold/Library/Caches/arduino/sketches/73C5D897EE8597E32A48D0086FB30EE2/sketch/src/lib/nv/NvBase.cpp.o:(.rodata._ZTV18NonVolatileStorage[_ZTV18NonVolatileStorage]+0x1c): undefined reference to `_ZN18NonVolatileStorage14writeToStorageEth'
collect2: error: ld returned 1 exit status

If I turn off the "Optimize for Linking" option, it compiles and downloads.

2

To enable the NonVolatileStorage class on ESP32, it seems necessary to define NV_DRIVER to NV_ESP32 instead of NV_DEFAULT.

3

Thanks for that hint.

It worked.

I did this sometime ago as per your suggestion, but for some reason (old age maybe) my solution click and reply did not work.

4

Glad to hear that.
Thank you for coming back!