I installed an Eclipse Version: 2018-12 (4.10.0) for Arduino.

I’ve got an CDT Core Builder error when I try to compile.

I’ve searched but cannot fix the problem.

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  • It is strange, because I added AVR Eclipse Plugin and GNU AVR-GCC toolchain. Also creating new project C/C++ -> Arduino Project. According some sources it works. But mine shows CDT error.
    – IlgarSky
    Jan 20, 2019 at 10:51
  • I have no clue what you installed. If you want to make arduino in eclipse easy use my sloeber at sloeber.io
    – jantje
    Jan 20, 2019 at 20:31


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