Compilation error when all debug options are disabled

[prasimix]

I tried to compile sketch with all debug options disabled (i.e. CONF_DEBUG, CONF_DEBUG_LATEST) and got the following error:

Archiving built core (caching) in: /tmp/arduino_cache_262959/core/core_arduino_sam_arduino_due_x_dbg_a3e93ab440d82c6ab9eb01c8144007f3.a
sketch/scpi_psu.cpp.o:(.rodata._ZN3eez3psu4scpiL13scpi_commandsE+0xfc): undefined reference to `eez::psu::scpi::scpi_cmd_debug(_scpi_t*)'
sketch/scpi_psu.cpp.o:(.rodata._ZN3eez3psu4scpiL13scpi_commandsE+0x104): undefined reference to `eez::psu::scpi::scpi_cmd_debugQ(_scpi_t*)'
sketch/scpi_psu.cpp.o:(.rodata._ZN3eez3psu4scpiL13scpi_commandsE+0x10c): undefined reference to `eez::psu::scpi::scpi_cmd_debugWdog(_scpi_t*)'
sketch/scpi_psu.cpp.o:(.rodata._ZN3eez3psu4scpiL13scpi_commandsE+0x114): undefined reference to `eez::psu::scpi::scpi_cmd_debugWdogQ(_scpi_t*)'
sketch/scpi_psu.cpp.o:(.rodata._ZN3eez3psu4scpiL13scpi_commandsE+0x11c): undefined reference to `eez::psu::scpi::scpi_cmd_debugOntimeQ(_scpi_t*)'
sketch/scpi_psu.cpp.o:(.rodata._ZN3eez3psu4scpiL13scpi_commandsE+0x124): undefined reference to `eez::psu::scpi::scpi_cmd_debugDirQ(_scpi_t*)'
sketch/scpi_psu.cpp.o:(.rodata._ZN3eez3psu4scpiL13scpi_commandsE+0x12c): undefined reference to `eez::psu::scpi::scpi_cmd_debugFileQ(_scpi_t*)'
sketch/scpi_psu.cpp.o:(.rodata._ZN3eez3psu4scpiL13scpi_commandsE+0x134): undefined reference to `eez::psu::scpi::scpi_cmd_debugVoltage(_scpi_t*)'
sketch/scpi_psu.cpp.o:(.rodata._ZN3eez3psu4scpiL13scpi_commandsE+0x13c): undefined reference to `eez::psu::scpi::scpi_cmd_debugCurrent(_scpi_t*)'
sketch/scpi_psu.cpp.o:(.rodata._ZN3eez3psu4scpiL13scpi_commandsE+0x144): undefined reference to `eez::psu::scpi::scpi_cmd_debugMeasureVoltage(_scpi_t*)'
sketch/scpi_psu.cpp.o:(.rodata._ZN3eez3psu4scpiL13scpi_commandsE+0x14c): undefined reference to `eez::psu::scpi::scpi_cmd_debugMeasureCurrent(_scpi_t*)'
collect2: error: ld returned 1 exit status
exit status 1
Error compiling for board Arduino Due (Programming Port).

[prasimix]

Fixed