pkg-config --cflags --libs prints libs for Requires.private

[humm]

>Synopsis:      pkg-config --cflags --libs prints libs for Requires.private
>Category:      user
>Environment:
        System      : OpenBSD 7.3
        Details     : OpenBSD 7.3-current (GENERIC.MP) #1200: Tue May 23 
15:22:30 MDT 2023
                         
dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP

        Architecture: OpenBSD.amd64
        Machine     : amd64
>Description:
        The pkg-config script is supposed to:

          - print the cflags of $pkg, its Requires, and its
            Requires.private iff --cflags is given
          - print the libs of $pkg and its Requires if --libs is
            given
          - print the libs of $pkg’s Requires.private if --libs
            and --static are given

        What it does is: If --libs and --cflags are given, the
        cflags and libs of $pkg, its Requires, and
        its Requires.private are printed; i.e., --cflags causes
        it to print the libs for static linking.
>How-To-Repeat:
        $ pkg-config --cflags egl
        -I/usr/X11R6/include -I/usr/X11R6/include/libdrm
        $ pkg-config --libs egl
        -L/usr/X11R6/lib -lEGL
        $ pkg-config --cflags --libs egl
        -I/usr/X11R6/include -I/usr/X11R6/include/libdrm -L/usr/X11R6/lib -lEGL 
-lXfixes -lX11-xcb -lxcb-glx -lxcb-dri2 -lXxf86vm -lXext -lX11 -lxcb -lXau 
-lXdmcp -ldrm