/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf/utils.c: In function ‘sf_init_inode’:
/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf/utils.c:165:28: error: passing argument 1 of ‘sf_ftime_from_timespec’ from incompatible pointer type [-Werror=incompatible-pointer-types]
     sf_ftime_from_timespec(&inode->i_atime, &info->AccessTime);
                            ^
/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf/utils.c:53:13: note: expected ‘struct timespec *’ but argument is of type ‘struct timespec64 *’
 static void sf_ftime_from_timespec(struct timespec *tv, RTTIMESPEC *ts)
             ^~~~~~~~~~~~~~~~~~~~~~
/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf/utils.c:166:28: error: passing argument 1 of ‘sf_ftime_from_timespec’ from incompatible pointer type [-Werror=incompatible-pointer-types]
     sf_ftime_from_timespec(&inode->i_ctime, &info->ChangeTime);
                            ^
/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf/utils.c:53:13: note: expected ‘struct timespec *’ but argument is of type ‘struct timespec64 *’
 static void sf_ftime_from_timespec(struct timespec *tv, RTTIMESPEC *ts)
             ^~~~~~~~~~~~~~~~~~~~~~
/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf/utils.c:167:28: error: passing argument 1 of ‘sf_ftime_from_timespec’ from incompatible pointer type [-Werror=incompatible-pointer-types]
     sf_ftime_from_timespec(&inode->i_mtime, &info->ModificationTime);
                            ^
/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf/utils.c:53:13: note: expected ‘struct timespec *’ but argument is of type ‘struct timespec64 *’
 static void sf_ftime_from_timespec(struct timespec *tv, RTTIMESPEC *ts)
             ^~~~~~~~~~~~~~~~~~~~~~
/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf/utils.c: In function ‘sf_setattr’:
/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf/utils.c:377:54: error: passing argument 2 of ‘sf_timespec_from_ftime’ from incompatible pointer type [-Werror=incompatible-pointer-types]
             sf_timespec_from_ftime(&info.AccessTime, &iattr->ia_atime);
                                                      ^
/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf/utils.c:63:13: note: expected ‘struct timespec *’ but argument is of type ‘struct timespec64 *’
 static void sf_timespec_from_ftime(RTTIMESPEC *ts, struct timespec *tv)
             ^~~~~~~~~~~~~~~~~~~~~~
/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf/utils.c:379:60: error: passing argument 2 of ‘sf_timespec_from_ftime’ from incompatible pointer type [-Werror=incompatible-pointer-types]
             sf_timespec_from_ftime(&info.ModificationTime, &iattr->ia_mtime);
                                                            ^
/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf/utils.c:63:13: note: expected ‘struct timespec *’ but argument is of type ‘struct timespec64 *’
 static void sf_timespec_from_ftime(RTTIMESPEC *ts, struct timespec *tv)
             ^~~~~~~~~~~~~~~~~~~~~~
   ./tools/objtool/objtool orc generate  --module --no-fp  --retpoline "/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf/.tmp_VBoxGuestR0LibSharedFolders.o";
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:317: /var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf/utils.o] Error 1
make[1]: *** [Makefile:1500: _module_/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf] Error 2
make[1]: Leaving directory '/usr/src/linux-4.18.0-gentoo'
make: *** [/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf/Makefile.include.footer:101: vboxsf] Error 2
 * ERROR: app-emulation/virtualbox-guest-additions-5.2.16::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=app-emulation/virtualbox-guest-additions-5.2.16::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=app-emulation/virtualbox-guest-additions-5.2.16::gentoo'`.
 * The complete build log is located at '/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/temp/environment'.
 * Working directory: '/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf'
 * S: '/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/VirtualBox-5.2.16'

>>> Failed to emerge app-emulation/virtualbox-guest-additions-5.2.16, Log file:

>>>  '/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/temp/build.log'

 * Messages for package app-emulation/virtualbox-guest-additions-5.2.16:

 * ERROR: app-emulation/virtualbox-guest-additions-5.2.16::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=app-emulation/virtualbox-guest-additions-5.2.16::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=app-emulation/virtualbox-guest-additions-5.2.16::gentoo'`.
 * The complete build log is located at '/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/temp/environment'.
 * Working directory: '/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/vboxsf'
 * S: '/var/tmp/portage/app-emulation/virtualbox-guest-additions-5.2.16/work/VirtualBox-5.2.16'
gentoovbox /usr/src/linux #