$ sudo prt-get -fr depinst bbswitch
prt-get: installing /usr/ports/contrib/bbswitch
=======> Building '/usr/ports/contrib/bbswitch/bbswitch#0.8-1.pkg.tar.gz'.
bsdtar -p -o -C /usr/ports/contrib/bbswitch/work/src -xf /usr/ports/contrib/bbswitch/bbswitch-0.8.tar.gz
+ build
+ cd bbswitch-0.8
+ make
make -C /lib/modules/4.19.1/build M="$(pwd)" modules
make[1]: Entering directory '/usr/src/linux-4.19.1'
  CC [M]  /usr/ports/contrib/bbswitch/work/src/bbswitch-0.8/bbswitch.o
/usr/ports/contrib/bbswitch/work/src/bbswitch-0.8/bbswitch.c: In function 'bbswitch_proc_write':
/usr/ports/contrib/bbswitch/work/src/bbswitch-0.8/bbswitch.c:317:9: error: implicit declaration of function 'copy_from_user'; did you mean 'raw_copy_from_user'? [-Werror=implicit-function-declaration]
     if (copy_from_user(cmd, buff, len))
         ^~~~~~~~~~~~~~
         raw_copy_from_user
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:312: /usr/ports/contrib/bbswitch/work/src/bbswitch-0.8/bbswitch.o] Error 1
make[1]: *** [Makefile:1517: _module_/usr/ports/contrib/bbswitch/work/src/bbswitch-0.8] Error 2
make[1]: Leaving directory '/usr/src/linux-4.19.1'
make: *** [Makefile:13: default] Error 2
=======> ERROR: Building '/usr/ports/contrib/bbswitch/bbswitch#0.8-1.pkg.tar.gz' failed.
prt-get: error while install

-- Packages where install failed
bbswitch