tce-load -i compiletc cmake boost-dev

wget https://downloads.sourceforge.net/clucene/clucene-core-2.3.3.4.tar.gz
wget https://www.linuxfromscratch.org/patches/blfs/svn/clucene-2.3.3.4-contribs_lib-1.patch

cd clucene-core-2.3.3.4

patch -Np1 -i ../clucene-2.3.3.4-contribs_lib-1.patch

sed -i '/Misc.h/a #include <ctime>' src/core/CLucene/document/DateTools.cpp

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 -DNDEBUG" -DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_BUILD_TYPE=Release -DCMAKE_VERBOSE_MAKEFILE=TRUE -DBUILD_CONTRIBS_LIB=ON -Wno-dev ../

[-fno-exceptions] fails

make [2m 3.56s]
sudo make install