/usr/share/GNUstep/debian/libdev.install.in is in gnustep-make 2.6.2-2.1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | @GNUSTEP_SYSTEM_LIBRARIES@/*.so
@GNUSTEP_SYSTEM_HEADERS@/@LIBRARY@
|