/usr/lib/pkgconfig/tao-openal.pc is in libtaoframework-openal-cil-dev 2.1.svn20090801-14.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/pkgconfig/tao-openal-1.1.pc
/usr/lib/pkgconfig/tao-openal-1.1.pc