Ok great— thanks Leila!

Thanks for the suggestion. I updated to Catalina 10.15.4, and for good measure I deleted the Arduino application folder, the ~/Library/Arduino15 folder, and the ~/Documents/Arduino folder, and reinstalled the patched Arduino version you linked to earlier. Still getting the same compiler error.

I also tried compiling for Arduino Uno just to check if something weird was going on with the AVR toolchain, and that worked just fine.

It's an issue with compiling, even before the compiler gets to the source code. I did try your test code for good measure, but I get the same "bad CPU type" issue from the detailed error message above:

fork/exec /Users/daltonb/Library/Arduino15/packages/arduino/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++: bad CPU type in executable
Error compiling for board Rokit-SmartInventor-mega32_v2.

Since this happens at compile time, I don't think it matters which board is actually connected, but my board does say "Smart Inventor V2+" on it. Not sure about a green sticker.

Thanks Leila! I tried to respond earlier, but have been getting a persistent "connection lost" message in the forums whether I'm logged in/out or try a different browser. The forum went down earlier today, so I'm guessing it was fixed then.

Anyhow, it looks like the build you linked to is the same one I tried above (i.e. "the 1.8.10 patch provided from this post"). Any thoughts on what to try next?

Hi there, I'm having trouble getting the default FlightController sketch uploaded to my new CoDrone Pro controller. After configuring my Arduino environment and installing the USB driver, I'm getting the following error:

avr-g++: bad CPU type in executable
Error compiling for board Rokit-SmartInventor-mega32_v2.

Any clues on how to proceed? Here is some more debug info on my setup.

OS: macOS Catalina 10.15.2
Arduino IDE: 1.8.12 (I also tried the 1.8.10 patch provided from this post).

Controller PCB: Smart Inventor V2+, Rokit_Line_2.20 Rev5 2019-07

Library: CoDrone by Robolink Version 2.2.1
Board package: rokit by ROBOLINK version 1.0.3

Board > Rokit-SmartInventor-mega32_v2
Port > /dev/cu.SLAB_USBtoUART

Full (verbose) build error on Arduino 1.8.12.

/Applications/Arduino.app/Contents/Java/arduino-builder -dump-prefs -logger=machine -hardware /Applications/Arduino.app/Contents/Java/hardware -hardware /Users/daltonb/Library/Arduino15/packages -tools /Applications/Arduino.app/Contents/Java/tools-builder -tools /Applications/Arduino.app/Contents/Java/hardware/tools/avr -tools /Users/daltonb/Library/Arduino15/packages -built-in-libraries /Applications/Arduino.app/Contents/Java/libraries -libraries /Users/daltonb/Documents/Arduino/libraries -fqbn=rokit:avr:SmartInventor-mega32_v2 -vid-pid=10C4_EA60 -ide-version=10812 -build-path /var/folders/ct/zm_r0fxd7859yvcw7r_fk88m0000gn/T/arduino_build_955951 -warnings=none -build-cache /var/folders/ct/zm_r0fxd7859yvcw7r_fk88m0000gn/T/arduino_cache_744638 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avr-gcc.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avr-gcc/4.8.1-arduino5 -prefs=runtime.tools.avr-gcc-4.8.1-arduino5.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avr-gcc/4.8.1-arduino5 -prefs=runtime.tools.avrdude.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avrdude/6.0.1-arduino5 -prefs=runtime.tools.avrdude-6.0.1-arduino5.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avrdude/6.0.1-arduino5 -verbose /Users/daltonb/Documents/Arduino/libraries/CoDrone/examples/Controller/FlightController/FlightController.ino
/Applications/Arduino.app/Contents/Java/arduino-builder -compile -logger=machine -hardware /Applications/Arduino.app/Contents/Java/hardware -hardware /Users/daltonb/Library/Arduino15/packages -tools /Applications/Arduino.app/Contents/Java/tools-builder -tools /Applications/Arduino.app/Contents/Java/hardware/tools/avr -tools /Users/daltonb/Library/Arduino15/packages -built-in-libraries /Applications/Arduino.app/Contents/Java/libraries -libraries /Users/daltonb/Documents/Arduino/libraries -fqbn=rokit:avr:SmartInventor-mega32_v2 -vid-pid=10C4_EA60 -ide-version=10812 -build-path /var/folders/ct/zm_r0fxd7859yvcw7r_fk88m0000gn/T/arduino_build_955951 -warnings=none -build-cache /var/folders/ct/zm_r0fxd7859yvcw7r_fk88m0000gn/T/arduino_cache_744638 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avr-gcc.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avr-gcc/4.8.1-arduino5 -prefs=runtime.tools.avr-gcc-4.8.1-arduino5.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avr-gcc/4.8.1-arduino5 -prefs=runtime.tools.avrdude.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avrdude/6.0.1-arduino5 -prefs=runtime.tools.avrdude-6.0.1-arduino5.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avrdude/6.0.1-arduino5 -verbose /Users/daltonb/Documents/Arduino/libraries/CoDrone/examples/Controller/FlightController/FlightController.ino
Using board 'SmartInventor-mega32_v2' from platform in folder: /Users/daltonb/Library/Arduino15/packages/rokit/hardware/avr/1.0.3
Using core 'atmega32' from platform in folder: /Users/daltonb/Library/Arduino15/packages/rokit/hardware/avr/1.0.3
Detecting libraries used...
/Users/daltonb/Library/Arduino15/packages/arduino/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -w -x c++ -E -CC -mmcu=atmega32 -DF_CPU=7372800L -DARDUINO=10812 -DARDUINO_AVR_SMARTINVENTOR-MEGA32_V2 -DARDUINO_ARCH_AVR -I/Users/daltonb/Library/Arduino15/packages/rokit/hardware/avr/1.0.3/cores/atmega32 -I/Users/daltonb/Library/Arduino15/packages/rokit/hardware/avr/1.0.3/variants/SmartInventor /var/folders/ct/zm_r0fxd7859yvcw7r_fk88m0000gn/T/arduino_build_955951/sketch/FlightController.ino.cpp -o /dev/null
fork/exec /Users/daltonb/Library/Arduino15/packages/arduino/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++: bad CPU type in executable
Error compiling for board Rokit-SmartInventor-mega32_v2.

Full build error on Arduino 1.8.10 (Catalina patch).

/Applications/Arduino.app/Contents/Java/arduino-builder -dump-prefs -logger=machine -hardware /Applications/Arduino.app/Contents/Java/hardware -hardware /Users/daltonb/Library/Arduino15/packages -tools /Applications/Arduino.app/Contents/Java/tools-builder -tools /Applications/Arduino.app/Contents/Java/hardware/tools/avr -tools /Users/daltonb/Library/Arduino15/packages -built-in-libraries /Applications/Arduino.app/Contents/Java/libraries -libraries /Users/daltonb/Documents/Arduino/libraries -fqbn=rokit:avr:SmartInventor-mega32_v2 -vid-pid=10C4_EA60 -ide-version=10810 -build-path /var/folders/ct/zm_r0fxd7859yvcw7r_fk88m0000gn/T/arduino_build_157681 -warnings=none -build-cache /var/folders/ct/zm_r0fxd7859yvcw7r_fk88m0000gn/T/arduino_cache_856219 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avr-gcc.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avr-gcc/4.8.1-arduino5 -prefs=runtime.tools.avr-gcc-4.8.1-arduino5.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avr-gcc/4.8.1-arduino5 -prefs=runtime.tools.avrdude.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avrdude/6.0.1-arduino5 -prefs=runtime.tools.avrdude-6.0.1-arduino5.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avrdude/6.0.1-arduino5 -verbose /Users/daltonb/Documents/Arduino/libraries/CoDrone/examples/Controller/FlightController/FlightController.ino
/Applications/Arduino.app/Contents/Java/arduino-builder -compile -logger=machine -hardware /Applications/Arduino.app/Contents/Java/hardware -hardware /Users/daltonb/Library/Arduino15/packages -tools /Applications/Arduino.app/Contents/Java/tools-builder -tools /Applications/Arduino.app/Contents/Java/hardware/tools/avr -tools /Users/daltonb/Library/Arduino15/packages -built-in-libraries /Applications/Arduino.app/Contents/Java/libraries -libraries /Users/daltonb/Documents/Arduino/libraries -fqbn=rokit:avr:SmartInventor-mega32_v2 -vid-pid=10C4_EA60 -ide-version=10810 -build-path /var/folders/ct/zm_r0fxd7859yvcw7r_fk88m0000gn/T/arduino_build_157681 -warnings=none -build-cache /var/folders/ct/zm_r0fxd7859yvcw7r_fk88m0000gn/T/arduino_cache_856219 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avr-gcc.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avr-gcc/4.8.1-arduino5 -prefs=runtime.tools.avr-gcc-4.8.1-arduino5.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avr-gcc/4.8.1-arduino5 -prefs=runtime.tools.avrdude.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avrdude/6.0.1-arduino5 -prefs=runtime.tools.avrdude-6.0.1-arduino5.path=/Users/daltonb/Library/Arduino15/packages/arduino/tools/avrdude/6.0.1-arduino5 -verbose /Users/daltonb/Documents/Arduino/libraries/CoDrone/examples/Controller/FlightController/FlightController.ino
Using board 'SmartInventor-mega32_v2' from platform in folder: /Users/daltonb/Library/Arduino15/packages/rokit/hardware/avr/1.0.3
Using core 'atmega32' from platform in folder: /Users/daltonb/Library/Arduino15/packages/rokit/hardware/avr/1.0.3
Detecting libraries used...
/Users/daltonb/Library/Arduino15/packages/arduino/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -w -x c++ -E -CC -mmcu=atmega32 -DF_CPU=7372800L -DARDUINO=10810 -DARDUINO_AVR_SMARTINVENTOR-MEGA32_V2 -DARDUINO_ARCH_AVR -I/Users/daltonb/Library/Arduino15/packages/rokit/hardware/avr/1.0.3/cores/atmega32 -I/Users/daltonb/Library/Arduino15/packages/rokit/hardware/avr/1.0.3/variants/SmartInventor /var/folders/ct/zm_r0fxd7859yvcw7r_fk88m0000gn/T/arduino_build_157681/sketch/FlightController.ino.cpp -o /dev/null
fork/exec /Users/daltonb/Library/Arduino15/packages/arduino/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++: bad CPU type in executable
Error compiling for board Rokit-SmartInventor-mega32_v2.