/usr/lib/pkgconfig/glib-sharp-3.0.pc is in libglib3.0-cil-dev 2.99.3-2.
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 | prefix=${pcfiledir}/../..
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
gapidir=${prefix}/share/gapi-3.0
Name: GLib#
Description: GLib# - .NET Binding for the glib library.
Version: 2.99.3
Cflags: -I:${gapidir}/glib-api.xml
Libs: -r:${libdir}/cli/glib-sharp-3.0/glib-sharp.dll
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