# Note: depends on cmake
wget -c https://github.com/uclouvain/openjpeg/archive/v2.3.1/openjpeg-2.3.1.tar.gz
tar -xzf openjpeg-2.3.1.tar.gz
cd openjpeg-2.3.1
mkdir -p build
cd build
cmake .. -DCMAKE_INSTALL_PREFIX="/usr"
make # Doesn't mind -j#
make install