tce-load -i compiletc cmake 

wget https://github.com/google/double-conversion/archive/v3.1.6/double-conversion-3.1.6.tar.gz

cd double-conversion-3.1.6

mkdir build
cd build

cmake -LAH -DCMAKE_C_FLAGS_RELEASE="-flto -march=armv8-a+crc -mtune=cortex-a72 -Os -pipe" -DCMAKE_CXX_FLAGS_RELEASE="-flto -march=armv8-a+crc -mtune=cortex-a72 -Os -pipe -fno-exceptions -fno-rtti" -DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_BUILD_TYPE=Release -DCMAKE_VERBOSE_MAKEFILE=TRUE -DCMAKE_INSTALL_LIBDIR=lib -DBUILD_SHARED_LIBS=ON ../

make [0m 10.74s]
sudo make install