wget -c http://download.gna.org/cal3d/sources/cal3d-0.11.0.tar.gz
tar -xzf cal3d-0.11.0.tar.gz
cd cal3d-0.11.0
mkdir -p build
cd build
../configure --prefix="/usr"
# workaround for missing includes:
sed -i -e '1i#include <string.h>' config.h
make # Doesn't mind -j#
make install