Hi! I am evaluating PlatformIO for my next Arduino Due project. My greatest concern is that I want to use the latest stable version of gccarmnoneeabi (Version 8-2018-q4-major). There is of course no such release from the Arduino team, because it would force several library owners out in the world …

Wow, thank you for the recent update, updating gccarmnoneeabi to 2017-q4! (I have just received it in the 4.0 Beta, as Atmel SAM 3.7.0.) This seems to be a huge but reasonable step, as Arduino itself brought out this version for SAMD as a beta a while ago, so library owners had some time to adapt.…

[image] csaba: build_flags = -std=c++17 Just for safety reasons you should also build_unflags = -std=... whatever C++ standard it was using before. Best to get a look at a compile command using pio run -v and inspecting all set -std switches for a g++ invoke

Thanks, you are right. build_unflags = -std=gnu++11 And now I have much-much more warnings. :slight_smile:

PlatformIO Community

How to install a newer toolchain than the official one

maxgerhardt July 2, 2019, 7:07pm 3

You should be able to use the new platform_packages feature (docs)

platform_packages =
  toolchain-gccarmnoneeabi@1.80201.181220

Possible to use C++17