wpkg --libs

Options Comments
--admindir Define the administration directory, where the database of the installed packages resides.
--debug Define a set of flags of things to print out for debug purposes.
--instdir Define the installation directory, where the data files are installed on the target.
--quiet Not used.
--root Define the installation root path.
--verbose Not used.

The --libs command lists the C/C++ command line options to use to link your package against the specified packages.

In many cases these include -L options with paths to the libraries and -l entries (lower case L, for example -lz for the z library) with the name of each of the library to link against.

wpkg --libs wpkg
-L/usr/lib/wpkg -L/usr/lib -lwpkg_tld -lwpkg_z -lwpkg_bz2 -lutf8 -lexpr -ldebpackages

The pkg-config support in wpkg also include --cflags which is used to list options when compiing files with the specified packages.