tce-load -i compiletc

wget https://download.libsodium.org/libsodium/releases/libsodium-1.0.18.tar.gz

cd libsodium-1.0.18

CC="gcc -march=armv8-a+crc -mtune=cortex-a53 -Os -pipe" CXX="g++ -march=armv8-a+crc -mtune=cortex-a53 -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --disable-static --localstatedir=/var

[-flto fails]

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

make [1m 44.11s]
sudo make install