/usr/share/dpkg/pie-compile.specs is in libdpkg-perl 1.18.25.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | *self_spec:
+ %{!r:%{!fpie:%{!fPIE:%{!fpic:%{!fPIC:%{!fno-pic:%{!fno-PIE:%{!no-pie:-fPIE}}}}}}}}
|