Error "relocation truncated to fit: R_ARM_PREL31 against `.ARM.extab'" causes on Linux ARM machines if using std::function.

[asukiaaa]

I got the following an error at building a project on Linux ARM machine.

/home/asuki/.platformio/packages/toolchain-gccarmnoneeabi-teensy/bin/../lib/gcc/arm-none-eabi/11.3.1/thumb/v7e-m+dp/hard/libgcc.a(pr-support.o):(.ARM.exidx+0x34): relocation truncated to fit: R_ARM_PREL31 against `.ARM.extab'

The following code causes this error.

#include <Arduino.h>

using CalcInt = std::function<int(int, int)>;
int _plus(int a, int b) { return a + b; }
CalcInt plus = _plus;

void setup() { Serial.begin(9600); }

void loop() {
  Serial.println(plus(1, 2));
  delay(100);
}

However, I could build the code on Linux x86 64bit machine.

CPU type	OS	Machine	Build result
ARM	Ubuntu22.04 64bit	Nvidia Jetson AGX Orin	Failed
ARM	Raspberry Pi OS 64bit	Raspberry Pi 3B	Failed
ARM	Raspberry Pi OS 32bit	Raspberry Pi 3B	Failed
x86	Ubuntu22.04 64bit	Lenovo ThinkPad S1 Yoga (Intel)	Succeeded

Version of tools.
PlatformIO: 6.1.16
platformio-teensy: 5.0.0 (It uses Teensyduino v1.59)

I tried to build with using Arduino IDE but IDE2 does not support ARM and IDE1.8.19 cannot failed loading board setting of teensy so I gave up trying Arduino IDE.

I read the following threads but I cannot find any way to resolve the error.

RT1064: How to solve gcc linker error (.ARM.exidx+0x0): relocation truncated to fit: R_ARM_PREL31

Hi, According to my understanding this linker error occurs because of the following requirements from the ARM ABI standard: - There is a separate .ARM.exidx section created by the compiler which contains entries that refer to addresses in the code. - Each entry in .ARM.exidx contains a 31 bit...

community.nxp.com

How to solve gcc linker error (.ARM.exidx+0x0): relocation truncated to fit: R_ARM_PREL31: followup

Followup to old issue: Re: RT1064: How to solve gcc linker error (.ARM.ex... - NXP Community I am disappointed that the long-standing answer to a limitation of the ARM-EABI is: 1. Use C (discard 100s of our application's files) 2. Compile C++ without exceptions (ie. modify the semantics of...

community.nxp.com

I could avoid the error if I stop using std::function like this but I want to use std::function.

// using CalcInt = std::function<int(int, int)>;
typedef int(*CalcInt)(int, int);

Is there any way to avoid the error on ARM machines?

 

[jmarsh]

Sounds like a bug in platformio's Teensy linker script.

 

[PaulStoffregen]

and IDE1.8.19 cannot failed loading board setting of teensy

Arduino IDE 1.8.19 does work on ARM-based Linux. But you must run the dedicated installed, because Boards Manager in those old IDE versions is not enough for Teensy.

Get the installer here:

Teensyduino: Teensy support for Arduino IDE

www.pjrc.com

Scroll down to "Arduino 1.8.x Software Development (Download and Run Installer)".

 

[asukiaaa]

Arduino IDE 1.8.19 does work on ARM-based Linux. But you must run the dedicated installed, because Boards Manager in those old IDE versions is not enough for Teensy.

Thank you for the information.
I miss understood the way to install teensy info to Arduino IDE.
I could install board info of teensy with using the installer.

However, same error occurs even on Arduino IDE on Jetson AGX Orin (arm64bit).