Failure to compile Marlin: error: redefinition of 'struct std::hash<long unsigned int>'

PlatformIO IDE
1

Hi,
So, I am not much of a code person but have successfully customized marlin for my ender 3 before. I know PIO can be touchy at times, but I am running into an error and cannot figure it out. So when downloading the original marlin package from BTT for the SKR E3 Turbo, I cannot get PIO to compile the firmware even with no changes.

Firmware: GitHub - bigtreetech/BIGTREETECH-SKR-E3-Turbo

The error I am getting. I am using unedited firmware, so the link above is what my Config and Config adv files will be.

Error Message: c:\users\the gun psychiatrist.platformio\packages\toolchain-gccarmnoneeabi\arm-none-eabi\include\c++\10.3.1\bits\functional_hash.h:168:3: error: redefinition of ‘struct std::hash’

Build error
Build error1330×215 72.7 KB

At this point, I just want to get marlin to compile successfully first before making any changes. That way I can isolate any issues when they popup. I am far from what you would call a person who can write code. I probably could do hello world if someone showed me step by step. However, I do understand how to edit firmware and why you specify certain things. Course, I think the issue is PIO and not Marlin. I could be wrong.

2

Please link issues you’ve created in reference to this problem so that it can be found.

3

I am not sure what that means. Sorry

4

And well one cheap way to fix the problem is to comment out the double-define, e.g. by getting rid of the wchar_t specialization in the header pointed to by the error.

grafik
grafik1024×768 73.1 KB

But that’s not what users are supposed to do. The project hasn’t been updated to use newer Marlin versions for almost 2 years nows, and this version of Marlin uses a platform (https://github.com/p3p/pio-nxplpc-arduino-lpc176x/archive/0.1.3.zip) which does not pin the toolchain version (as e.g. seen in Fix compilation error by maxgerhardt · Pull Request #12 · p3p/pio-nxplpc-arduino-lpc176x · GitHub), so breakagaes can happen.

Per compilation log the compile is using

 - framework-arduino-lpc176x @ 0.2.9
 - toolchain-gccarmnoneeabi @ 1.100301.220327 (10.3.1)

but that toolchain version didn’t even exist 2 or 3 years ago, it was only published 1 year ago.

So the obvios way is to go in here

and turn that into

platform_packages =
   framework-arduino-lpc176x@^0.2.5
   toolchain-gccarmnoneeabi@~1.90301.0

then recompilation works without problems and no file modifications.

grafik
grafik1024×768 70.4 KB

1 Like
5

@maxgerhardt That fixed the issue! I really appreciate your time and intelligence in this matter. My computer thanks you too. It about took a flight to the parking lot LOL! I have always had a lot of respect for folks who are good at this code stuff. Amazing. Thank you again and have a great evening.

6

Thank you very much! That helped me too!