Compilation fails on macOS machine: "ctags: bad CPU type in executable"

[hgrecco]

Describe the problem

Cannot Verify/Compile even simple examples (AnalogReadSerial.ino). ctags: bad CPU type in executable in macOS with

To reproduce

Just run the any example.

Using board 'uno' from platform in folder: /Users/grecco/Library/Arduino15/packages/arduino/hardware/avr/1.8.3
Using core 'arduino' from platform in folder: /Users/grecco/Library/Arduino15/packages/arduino/hardware/avr/1.8.3
Detecting libraries used...
/Users/grecco/Library/Arduino15/packages/arduino/tools/avr-gcc/7.3.0-atmel3.6.1-arduino7/bin/avr-g++ -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10607 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -I/Users/grecco/Library/Arduino15/packages/arduino/hardware/avr/1.8.3/cores/arduino -I/Users/grecco/Library/Arduino15/packages/arduino/hardware/avr/1.8.3/variants/standard /var/folders/xj/xsrq0ml15_q98sq78466mbwr000bjr/T/arduino-sketch-ECD2946323C50FF71A5DD32C03F77EE8/sketch/AnalogReadSerial.ino.cpp -o /dev/null
Generating function prototypes...
/Users/grecco/Library/Arduino15/packages/arduino/tools/avr-gcc/7.3.0-atmel3.6.1-arduino7/bin/avr-g++ -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10607 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -I/Users/grecco/Library/Arduino15/packages/arduino/hardware/avr/1.8.3/cores/arduino -I/Users/grecco/Library/Arduino15/packages/arduino/hardware/avr/1.8.3/variants/standard /var/folders/xj/xsrq0ml15_q98sq78466mbwr000bjr/T/arduino-sketch-ECD2946323C50FF71A5DD32C03F77EE8/sketch/AnalogReadSerial.ino.cpp -o /var/folders/xj/xsrq0ml15_q98sq78466mbwr000bjr/T/arduino-sketch-ECD2946323C50FF71A5DD32C03F77EE8/preproc/ctags_target_for_gcc_minus_e.cpp
/Users/grecco/Library/Arduino15/packages/builtin/tools/ctags/5.8-arduino11/ctags -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives /var/folders/xj/xsrq0ml15_q98sq78466mbwr000bjr/T/arduino-sketch-ECD2946323C50FF71A5DD32C03F77EE8/preproc/ctags_target_for_gcc_minus_e.cpp
Compilation error: Error: 2 UNKNOWN: fork/exec /Users/grecco/Library/Arduino15/packages/builtin/tools/ctags/5.8-arduino11/ctags: bad CPU type in executable

Expected behavior

It should compile.

Arduino IDE version

2.0.0-beta.7

Operating system

macOS

Operating system version

Big Sur (11.4)

Additional context

I also have Arduino 1.8.13 installed and there it works fine. It seems to be using a different toolchain located in:

/Applications/Arduino.app/Contents/Java/tools-builder/ctags/5.8-arduino11/ctags

Issue checklist

• I searched for previous reports in the issue tracker
• I verified the problem still occurs when using the latest nightly build
• My report contains all necessary details

[flatsiedatsie]

I'm seeing this issue on M1 Macbook Pro, running Monterey 12.1.
Upgrading to latest Arduino IDE 1.8.19 did not solve it.

It happened while trying to upload code to an Arduino Nano
There is no problem with the checkmark (test) button, only when using the arrow (upload) button.
I tried updating all libraries too, no effect.
This also occurs with the basic blink sketch.

Could it be that part of the upload process is still 32 bit?

[nickdesaulniers]

possible dup of #1818 or #1796. @hgrecco @flatsiedatsie do you have rosetta installed?

[flatsiedatsie]

@nickdesaulniers Yes I have

[per1234]

Thanks for your report @hgrecco. Although Arduino IDE 2.x is a native Apple Silicon application, it uses various helper tools and some of these tools are only available in "Intel" (x86) builds. One such tool is ctags.

Apple has created a "binary translator" named Rosetta 2 that allows x86 applications to run on Apple Silicon machines. So the problem can be solved by simply installing Rosetta 2. You can do that by following these instructions:

https://support.apple.com/102527

We are tracking the need to produce native Apple Silicon builds of ctags to avoid the need for Rosetta 2 here: arduino/ctags#20. The infrastructure is already present in Arduino IDE to automatically install the Apple Silicon build of the the helper tools if available, so no work is needed in this repository in order to resolve this deficiency. For this reason, and since the deficiency is already being tracked in the relevant repository, I'll go ahead and close this issue.