tce-load -i compiletc cmake libebml-dev

cd libmatroska-1.5.2

mkdir build
cd build

cmake -LAH -DCMAKE_C_FLAGS_RELEASE="-flto -fuse-linker-plugin -mtune=generic -Os -pipe" -DCMAKE_CXX_FLAGS_RELEASE="-flto -fuse-linker-plugin -mtune=generic -Os -pipe -fno-rtti" -DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_BUILD_TYPE=Release -DCMAKE_VERBOSE_MAKEFILE=TRUE -DBUILD_SHARED_LIBS=YES ../

[-fno-exceptions fails]

make [0m 11.03s]
sudo make install