installing pcmanfm does not seem to work properly on its deps

[userx-bw]

when Installing pcmanfm wither from slackbuilds.org or ponce git in the tool it shows the option for GTK 2 or 3 or none. and when entering for 3 it does not add the required libfm-gtk it fails to install the package at all.

this part here

`$ sudo sboinstall pcmanfm

This package provides files required to build freedesktop.org menu
spec-compliant desktop menus for LXDE. The files are originally taken
from gnome-menus, and some minor modifications were made. lxmenu-data
package is required by lxpanel and lxlauncher.

Proceed with lxmenu-data? [y] y
lxmenu-data added to install queue.

LibFM provides file management functions built on top of Glib/GIO,
giving a convenient higher-level API.

This package contains a library and other files required by
menu-cache-gen libexec of the recent menu-cache >= 1.0.0.

Proceed with libfm-extra? [y] y
libfm-extra added to install queue.

Libmenu-cache is a library creating and utilizing caches to speed up
the manipulation for freedesktop.org defined application menus. It can
be used as a replacement of libgnome-menu of gnome-menus.

Proceed with menu-cache? [y] y
menu-cache added to install queue.

LibFM provides file management functions built on top of Glib/GIO,
giving a convenient higher-level API.

You can choose which version of gtk the library will build against:

GTK=2 link with gtk+2 (default)
GTK=3 link with gtk+3
GTK=0 don't link against gtk at all

Pass the script the parameter you prefer, like
GTK=3 ./libfm.SlackBuild

It looks like libfm has options; would you like to set any when the slackbuild is run? [n] y

Please supply any options here, or enter to skip: GTK=3 <---- first time

Proceed with libfm? [y]
libfm added to install queue.

PCManFM is an extremely fast and lightweight GTK+ based file manager
which features tabbed browsing and a user-friendly interface.

By default the gtk+2 version is built: if you prefer to build the
gtk+3 one pass the script the parameter GTK=3, like

GTK=3 ./pcmanfm.SlackBuild

If you have problems viewing icons on pcmanfm and you're using the
gtk+2 version, include this line to your $HOME/.gtkrc-2.0:
gtk-icon-theme-name="Tango"

It looks like pcmanfm has options; would you like to set any when the slackbuild is run? [n] y

Please supply any options here, or enter to skip: GTK=3 <-- second time

Proceed with pcmanfm? [y]
pcmanfm added to install queue.

Install queue: lxmenu-data libfm-extra menu-cache libfm pcmanfm

Are you sure you wish to continue? [y] `

and I do not know why it is asking twice to GTK= other then it maybe reading wrong because libfm is the only package that is requring it as it looks to be reading do it again or ??? as it should not have to be added twice when it is calling for the second dep options to be added.
as in
for libfm add the GTK option then next dep is for or my eyes and brain or maybe confusing me which is probably the case