/usr/lib/x86_64-linux-gnu/pkgconfig/openscenegraph-osgFX.pc is in libopenscenegraph-dev 3.2.1-7ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | # pkg-config source file
prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name: openscenegraph-osgFX
Description: Special effects library for Openscenegraph
Version: 3.2.1
Requires: openscenegraph-osgDB openscenegraph-osgUtil openscenegraph-osg openthreads
Conflicts:
Libs: -L${libdir} -losgFX
Cflags: -I${includedir}
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