Multiple Defintions error

[Szum123321]

Hi!

I'm trying to compile some code for Teensy 3.5 with PlatformIO 2.3.2, and I'm getting multiple definitions error.

I followed the procedure described in README, which sadly didn't work even though I cleaned the build environment and restarted VScode all the time.

Error message looks like this: link

I'm using Arch based linux distro:
Linux sz-81nh 5.11.14-arch1-1 #1 SMP PREEMPT Wed, 14 Apr 2021 12:06:34 +0000 x86_64 GNU/Linux

Also, the same code (the only difference being instead of TeensyTimer, I used STM32Timer) compiles and works perfectly on ST Nulceo F303RE

Steps to Reproduce

Minimal example: Teensy_minimal.zip

Expected behavior

Code compiles for Teensy

Actual behavior

Linker spews out a bunch of Multiple definitions error

[Szum123321]

The library is included in include/I2CEEPROM.h file

[khoih-prog]

You have to modify like this to use new C++ style hpp

1. main.cpp or Teensy_minimal.ino

#include <Arduino.h>
#include "I2CEEPROM.h"

I2CEEPROM mem;

void setup() 
{
}

void loop() 
{
}

---

2. I2CEEPROM.h

#ifndef I2CEEPROM_H
#define I2CEEPROM_H

#include <Arduino.h>
#include <Wire.h>
#include <math.h>
#include "TimerInterrupt_Generic.h"

class I2CEEPROM {};

#include "I2CEEPROM_Impl.hpp"

#endif

---

3. I2CEEPROM_Impl.hpp

#ifndef I2CEEPROM_IMPL_HPP
#define I2CEEPROM_IMPL_HPP

#if ( defined(STM32F0) || defined(STM32F1) || defined(STM32F2) || defined(STM32F3)  ||defined(STM32F4) || defined(STM32F7) || \
       defined(STM32L0) || defined(STM32L1) || defined(STM32L4) || defined(STM32H7)  ||defined(STM32G0) || defined(STM32G4) || \
       defined(STM32WB) || defined(STM32MP1) )
  STM32Timer DEVICE_TICK_TIMER(TIM2);
#elif ( defined(CORE_TEENSY) || defined(TEENSYDUINO) )
  TeensyTimer DEVICE_TICK_TIMER(TEENSY_TIMER_3);
#endif

/*library code here*/

#endif    // I2CEEPROM_IMPL_HPP

---

Compile is OK on Arduino IDE, and should be OK on PIO, unless you have wrong settings / configurations