I'm trying to build a sketch using `FastLED` with [queezythegreat/arduino-cmake]( https://github.com/queezythegreat/arduino-cmake ),

Archive FastLED Archive
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1

I’m trying to build a sketch using FastLED with queezythegreat/arduino-cmake, and I’m seeing the following error:

CMakeFiles/Sketch.dir/Sketch_simple.cpp.obj: In function `ClocklessController<(unsigned char)10, 4, 10, 6, (EOrder)66, 0, false, 10>::clearLeds(int)':
/home/justin/p/alburrell/libraries/FastLED/platforms/avr/clockless_trinket.h:105: undefined reference to `__cxa_guard_acquire'
/home/justin/p/alburrell/libraries/FastLED/platforms/avr/clockless_trinket.h:108: undefined reference to `__cxa_guard_release'

Adding #define NEED_CXX_BITS to my sketch (as suggested in #46) has no effect for me.

Copying and pasting this section from FastLED.cpp fixed the problem - but I’d prefer to avoid that if I can.

I also tried adding #define NEED_CXX_BITS and using __cxxabiv1; to my sketch, but I still saw the error message above.

Am I doing something wrong here? I’m a total C++ novice, so it could be a super simple fix!

I’m building on Ubuntu for Arduino Uno.

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You need to add #define NEED_CXX_BITS to fastled_config.h - since you’re building with a completely untested/unsupported build environment.

Also, it looks like arduino cmake hasn’t been updated in years, make sure that you’re using recent versions of the avr build tools and such.

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Great, thanks! That worked!