tce-load -i compiletc libunistring-dev

https://ftp.gnu.org/gnu/libidn/libidn2-2.3.0.tar.gz

cd libidn2-2.3.0

CC="gcc -march=armv8-a+crc -mtune=cortex-a72 -Os -pipe" CXX="g++ -march=armv8-a+crc -mtune=cortex-a72 -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --localstatedir=/var --disable-static

find . -name Makefile -type f -exec sed -i 's/-g -O2//g' {} \;

make [0m 14.89s]
sudo make install

  CFLAGS:            -g -O2 
  LDFlags:           
  Documentation:     yes
  Library types:     Shared=yes, Static=no
  Libiconv:          yes 
  Libunistring:      yes 0.9.10 -L/usr/local/lib -lunistring -R/usr/local/lib
  Valgrind:          
  Version script:    yes