tce-load -i compiletc 

https://ftp.gnu.org/gnu/libunistring/libunistring-0.9.10.tar.xz

cd libunistring-0.9.10

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 [3m 49.31s]
sudo make install