Jetson TK1 + Gentoo: Fails to install x11-libs/gtk+

Hey,

I am running a Jetson TK1 with the Nvidia Kernel 3.10.40 and a Gentoo Operating System the Driver Package is taken from L4T 21.4.
I am trying to emerge the x11-libs/gtk+ to get the following two libraries:

libgtk-x11-2.0.so.0 => not found
libgdk-x11-2.0.so.0 => not found

They are needed by OpenJFX and necessary for it to successully utilize the truetype library.

I get the following errors during compilation:

* ACCESS DENIED:  open_wr:      /dev/mem
 * ACCESS DENIED:  open_wr:      /dev/mem
 * ACCESS DENIED:  open_wr:      /dev/nvmap

****NvRmMemInit failed****

* ACCESS DENIED:  open_wr:      /dev/nvhost-ctrl
* --------------------------- ACCESS VIOLATION SUMMARY ---------------------------
 * LOG FILE: "/var/log/sandbox/sandbox-24195.log"
 * 
VERSION 1.0
FORMAT: F - Function called
FORMAT: S - Access Status
FORMAT: P - Path as passed to function
FORMAT: A - Absolute Path (not canonical)
FORMAT: R - Canonical Path
FORMAT: C - Command Line

F: open_wr
S: deny
P: /dev/mem
A: /dev/mem
R: /dev/mem
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspectZ5Kk7w/.libs/lt-Gdk-3.0 --introspect-dump=/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspectZ5Kk7w/functions.txt,/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspectZ5Kk7w/dump.xml 

F: open_wr
S: deny
P: /dev/mem
A: /dev/mem
R: /dev/mem
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspectZ5Kk7w/.libs/lt-Gdk-3.0 --introspect-dump=/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspectZ5Kk7w/functions.txt,/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspectZ5Kk7w/dump.xml 

F: open_wr
S: deny
P: /dev/nvmap
A: /dev/nvmap
R: /dev/nvmap
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspectZ5Kk7w/.libs/lt-Gdk-3.0 --introspect-dump=/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspectZ5Kk7w/functions.txt,/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspectZ5Kk7w/dump.xml 

F: open_wr
S: deny
P: /dev/nvhost-ctrl
A: /dev/nvhost-ctrl
R: /dev/nvhost-ctrl
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspectZ5Kk7w/.libs/lt-Gdk-3.0 --introspect-dump=/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspectZ5Kk7w/functions.txt,/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspectZ5Kk7w/dump.xml 

F: open_wr
S: deny
P: /dev/mem
A: /dev/mem
R: /dev/mem
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspecttnJ809/.libs/lt-GdkX11-3.0 --introspect-dump=/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspecttnJ809/functions.txt,/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspecttnJ809/dump.xml 

F: open_wr
S: deny
P: /dev/mem
A: /dev/mem
R: /dev/mem
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspecttnJ809/.libs/lt-GdkX11-3.0 --introspect-dump=/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspecttnJ809/functions.txt,/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspecttnJ809/dump.xml 

F: open_wr
S: deny
P: /dev/nvmap
A: /dev/nvmap
R: /dev/nvmap
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspecttnJ809/.libs/lt-GdkX11-3.0 --introspect-dump=/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspecttnJ809/functions.txt,/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspecttnJ809/dump.xml 

F: open_wr
S: deny
P: /dev/nvhost-ctrl
A: /dev/nvhost-ctrl
R: /dev/nvhost-ctrl
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspecttnJ809/.libs/lt-GdkX11-3.0 --introspect-dump=/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspecttnJ809/functions.txt,/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gdk/tmp-introspecttnJ809/dump.xml 

F: open_wr
S: deny
P: /dev/mem
A: /dev/mem
R: /dev/mem
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/tmp-introspecttp_Lrb/.libs/lt-Gtk-3.0 --introspect-dump=/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/tmp-introspecttp_Lrb/functions.txt,/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/tmp-introspecttp_Lrb/dump.xml 

F: open_wr
S: deny
P: /dev/mem
A: /dev/mem
R: /dev/mem
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/tmp-introspecttp_Lrb/.libs/lt-Gtk-3.0 --introspect-dump=/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/tmp-introspecttp_Lrb/functions.txt,/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/tmp-introspecttp_Lrb/dump.xml 

F: open_wr
S: deny
P: /dev/nvmap
A: /dev/nvmap
R: /dev/nvmap
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/tmp-introspecttp_Lrb/.libs/lt-Gtk-3.0 --introspect-dump=/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/tmp-introspecttp_Lrb/functions.txt,/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/tmp-introspecttp_Lrb/dump.xml 

F: open_wr
S: deny
P: /dev/nvhost-ctrl
A: /dev/nvhost-ctrl
R: /dev/nvhost-ctrl
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/tmp-introspecttp_Lrb/.libs/lt-Gtk-3.0 --introspect-dump=/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/tmp-introspecttp_Lrb/functions.txt,/var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/tmp-introspecttp_Lrb/dump.xml 

F: open_wr
S: deny
P: /dev/mem
A: /dev/mem
R: /dev/mem
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/.libs/lt-gtk-query-immodules-3.0 im-am-et.la im-cedilla.la im-cyrillic-translit.la im-inuktitut.la im-ipa.la im-multipress.la im-thai.la im-ti-er.la im-ti-et.la im-viqr.la im-xim.la 

F: open_wr
S: deny
P: /dev/mem
A: /dev/mem
R: /dev/mem
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/.libs/lt-gtk-query-immodules-3.0 im-am-et.la im-cedilla.la im-cyrillic-translit.la im-inuktitut.la im-ipa.la im-multipress.la im-thai.la im-ti-er.la im-ti-et.la im-viqr.la im-xim.la 

F: open_wr
S: deny
P: /dev/nvmap
A: /dev/nvmap
R: /dev/nvmap
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/.libs/lt-gtk-query-immodules-3.0 im-am-et.la im-cedilla.la im-cyrillic-translit.la im-inuktitut.la im-ipa.la im-multipress.la im-thai.la im-ti-er.la im-ti-et.la im-viqr.la im-xim.la 

F: open_wr
S: deny
P: /dev/nvhost-ctrl
A: /dev/nvhost-ctrl
R: /dev/nvhost-ctrl
C: /var/tmp/portage/x11-libs/gtk+-3.14.13/work/gtk+-3.14.13-.arm/gtk/.libs/lt-gtk-query-immodules-3.0 im-am-et.la im-cedilla.la im-cyrillic-translit.la im-inuktitut.la im-ipa.la im-multipress.la im-thai.la im-ti-er.la im-ti-et.la im-viqr.la im-xim.la 
 * --------------------------------------------------------------------------------

>>> Failed to emerge x11-libs/gtk+-3.14.13

Does anyone have an idea if I can solve this anyhow?

The only option I found is using FEATURES="-sandbox -usersandbox" but this just makes the installation successful, the libraries are still missing after this.