Hi, I am trying to build freestanding libstdc++ [1] for avr target in gcc 10.1. Initially, I wanted to play with coroutines, so I need <coroutine>. I use --enable-libstdcxx --disable-host-libstdcxx for configure. ./configure script runs fine with this arguments, but then make fails with the following: checking if /home/matwey/temp/gcc-10.1.0/build/./gcc/xgcc -B/home/matwey/temp/gcc-10.1.0/build/./gcc/ -B/usr/avr/bin/ -B/usr/avr/lib/ -isystem /usr/avr/include -isystem /usr/avr/sys-include --sysroot=/usr/avr/sys-root -mmcu=avrxmega3 supports -fno-rtti -fno-exceptions... no checking for /home/matwey/temp/gcc-10.1.0/build/./gcc/xgcc -B/home/matwey/temp/gcc-10.1.0/build/./gcc/ -B/usr/avr/bin/ -B/usr/avr/lib/ -isystem /usr/avr/include -isystem /usr/avr/sys-include --sysroot=/usr/avr/sys-root -mmcu=avrxmega3 option to produce PIC... -fPIC -DPIC checking if /home/matwey/temp/gcc-10.1.0/build/./gcc/xgcc -B/home/matwey/temp/gcc-10.1.0/build/./gcc/ -B/usr/avr/bin/ -B/usr/avr/lib/ -isystem /usr/avr/include -isystem /usr/avr/sys-include --sysroot=/usr/avr/sys-root -mmcu=avrxmega3 PIC flag -fPIC -DPIC works... no checking if /home/matwey/temp/gcc-10.1.0/build/./gcc/xgcc -B/home/matwey/temp/gcc-10.1.0/build/./gcc/ -B/usr/avr/bin/ -B/usr/avr/lib/ -isystem /usr/avr/include -isystem /usr/avr/sys-include --sysroot=/usr/avr/sys-root -mmcu=avrxmega3 static flag -static works... no checking if /home/matwey/temp/gcc-10.1.0/build/./gcc/xgcc -B/home/matwey/temp/gcc-10.1.0/build/./gcc/ -B/usr/avr/bin/ -B/usr/avr/lib/ -isystem /usr/avr/include -isystem /usr/avr/sys-include --sysroot=/usr/avr/sys-root -mmcu=avrxmega3 supports -c -o file.o... yes checking if /home/matwey/temp/gcc-10.1.0/build/./gcc/xgcc -B/home/matwey/temp/gcc-10.1.0/build/./gcc/ -B/usr/avr/bin/ -B/usr/avr/lib/ -isystem /usr/avr/include -isystem /usr/avr/sys-include --sysroot=/usr/avr/sys-root -mmcu=avrxmega3 supports -c -o file.o... (cached) yes checking whether the /home/matwey/temp/gcc-10.1.0/build/./gcc/xgcc -B/home/matwey/temp/gcc-10.1.0/build/./gcc/ -B/usr/avr/bin/ -B/usr/avr/lib/ -isystem /usr/avr/include -isystem /usr/avr/sys-include --sysroot=/usr/avr/sys-root -mmcu=avrxmega3 linker (/home/matwey/temp/gcc-10.1.0/build/./gcc/collect-ld) supports shared libraries... yes checking whether -lc should be explicitly linked in... yes checking dynamic linker characteristics... no checking how to hardcode library paths into programs... immediate checking for shl_load... configure: error: Link tests are not allowed after GCC_NO_EXECUTABLES. make[1]: *** [Makefile:10635: configure-target-libstdc++-v3] Error 1 make[1]: Leaving directory '/home/matwey/temp/gcc-10.1.0/build' make: *** [Makefile:954: all] Error 2 Is it configuration supported for avr architecture? [1] https://en.cppreference.com/w/cpp/freestanding
