Forget the `buildLoris' option.
You compile loris from the source with

  CPPFLAGS="-I/path/to/csound/headers" ./configure ...
  make && make install

if you use the double float csound version

  CPPFLAGS="-I/path/to/csound/headers -DUSE_DOUBLE" ./configure ...
  ...

I create a symbolic link on gnu/linux

  cd $OPCODEDIR64      # or OPCODEDIR for float
  ln -s /usr/lib64/libloris.so

tito