Arduino IDE no longer compiles on macOS 10.15 Catalina

[colinta]

Very sad! macOS no longer supports 32bit binaries. I deleted my copy of Arduino IDE and reinstalled the latest version, and the error message is `.../avr/bin/avr-g++: bad CPU type in executable``

[facchinm]

@colinta , we are working on it, there will be a beta release with only 64 bits tools soon but not too soon (10.15 is still in dev preview)

[donev77]

1.9 beta works on Catalina, tested on nodemcu ESP-12E

[colinta]

Thank you all! I’ll download the beta, and test it out.

…

On Jun 14, 2019, at 5:12 AM, donev77 ***@***.***> wrote: 1.9 beta works on Catalina, tested on nodemcu ESP-12E — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or mute the thread.

[per1234]

This isn't really about the Arduino IDE. It's about the toolchain. The ESP8266 core for Arduino uses a different toolchain, which apparently is 64 bit. That's great, but not relevant here because the ESP8266 core for Arduino is a 3rd party project.

If you use the beta build of the Arduino IDE to compile for one of the AVR boards like Arduino/Genuino Uno then you'll get the same "bad CPU type in executable" error.

[ttimpe]

Why is this even still 32-Bit? 64-Bit has been standard for a decade.

[gvarisco]

@colinta hi! could you please give build 865 a try? You can download it from #8976

[colinta]

In the latest macOS it won't let me open the app from an undientified developer, even if I override it in Security settings! Could be a bug, there are quite a few bugs in this beta version of macOS 10.15.

[gvarisco]

@colinta could you please confirm that Gatekeeper is activated on your system? What is the output of spctl --status?

Indeed, we do not codesign that bundle at the moment for test builds, but in case it becomes mandatory we may have to change this behaviour and update our build scripts.

[colinta]

spctl --status
assessments enabled
...
sudo spctl --master-disable

And now I can run the IDE, so thanks for that heads up. And my project compiled! I had new errors that I didn't have in the prev IDE (around assigning &PORTB as a uint8_t* instead of volatile uint8_t*), but all good after that! I haven't tried to actually flash my project yet; it's my keyboard and I want to test a quick blink project first.

[colinta]

In the interest of cleaning up, I'll close this issue, if I have more problems I'll let you know! Thanks for all the help, and everyone's work on the Arduino IDE in general.

[gvarisco]

Thanks for the feedback. Still, we want it to be fully working with GateKeeper turned ON, thus we'll make sure everything works as expected and without hacks before GA ships. /cc @facchinm