Going for more standard C++ on AVR

[jputcu]

After using ETL a long time on AVR I wanted to replace some etl:: with more standard C++. So I found avr-libstdcpp.
Using Microchip/Arduino avr-gcc-7.3 + ETL + avr-libstdcpp my code already started to look like its normal C++.
Doing some tests with Zak Kemble's avr-gcc-15.2 I'm starting to get errors with modm-io avr-libstdcpp.

Yesterday I used crosstool-ng to build me a avr-gcc-15.2 + libstdc++ giving me the following headers:

algorithm  avr       bits    climits   coroutine  cstdbool  cstdlib   exception  functional        iterator  new      optional  scoped_allocator  string_view  typeinfo     variant
array      backward  bitset  compare   cstdalign  cstddef   cxxabi.h  expected   generator         limits    numbers  ranges    source_location   tuple        type_traits  version
atomic     bit       cfloat  concepts  cstdarg    cstdint   debug     ext        initializer_list  memory    numeric  ratio     span              typeindex    utility

So now my idea: Replace avr-libstdcpp with the one provided by GCC, instead of a custom gcc build script, call ct-ng avr Wouldn't this require less maintenance and be more future proof?

[salkinium]

Yes, indeed our libstdc++ is from an older version than GCC14 (I think even as old as GCC10). I would be very appreciative if the crosstool-ng generated library would just work for AVR, can you test it out by replacing the avr-libstdcpp with a new one?