$ tce-load -wi compiletc cmake sdl2-dev openssl-1.1.1-dev pcre-dev zlib_base-dev libunistring-dev mpg123-dev libX11-dev
$ mkdir build
$ cd build
$ export CFLAGS="-mtune=generic -Os -pipe -flto"
$ export CXXFLAGS="-mtune=generic -Os -pipe -flto"
$ export LDFLAGS="-Wl,-O1 -flto"
$ cmake /path/to/lagrange-1.3.3/ -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local
$ sudo cmake --build . --target install