drm-legacy-kmod fails to build

[Robert Huff]

Hello:
	As part of upgrading a system from :

FreeBSD 13.0-CURRENT #0 r354131: Mon Oct 28 17:27:33 EDT 2019  amd64

	to CURRENT, I am attempting to (re)build drm-legacy-kmod.
	Whether done stand-alone or through PORTS_MODULES this fails
with:

===>  License BSD2CLAUSE MIT GPLv2 accepted by the user
===>   drm-legacy-kmod-g20200306 depends on file: /usr/local/sbin/pkg - found
=> FreeBSDDesktop-drm-legacy-g20200306-9691917_GH0.tar.gz doesn't seem to exist in /usr/ports/distfiles/.
=> Attempting to fetch https://codeload.github.com/FreeBSDDesktop/drm-legacy/tar.gz/9691917?dummy=/FreeBSDDesktop-drm-legacy-g20200306-9691917_GH0.tar.gz
fetch: https://codeload.github.com/FreeBSDDesktop/drm-legacy/tar.gz/9691917?dummy=/FreeBSDDesktop-drm-legacy-g20200306-9691917_GH0.tar.gz: size unknown
fetch: https://codeload.github.com/FreeBSDDesktop/drm-legacy/tar.gz/9691917?dummy=/FreeBSDDesktop-drm-legacy-g20200306-9691917_GH0.tar.gz: size of remote file is not known
FreeBSDDesktop-drm-legacy-g20200306-9691917_GH0.tar.gz        1637 kB 5572 kBps    00s
===> Fetching all distfiles required by drm-legacy-kmod-g20200306 for building
===>  Extracting for drm-legacy-kmod-g20200306
=> SHA256 Checksum OK for FreeBSDDesktop-drm-legacy-g20200306-9691917_GH0.tar.gz.
===>  Patching for drm-legacy-kmod-g20200306
===>  Configuring for drm-legacy-kmod-g20200306
===>  Building for drm-legacy-kmod-g20200306
--- all_subdir_drm ---
===> drm (all)
--- all_subdir_drm/drm ---
===> drm/drm (all)
make[4]: "/usr/src/sys/conf/kmod.mk" line 77: Could not find bsd.sysdir.mk
make[4]: Fatal errors encountered -- cannot continue
make[4]: stopped in /data/port-work/usr/ports/graphics/drm-legacy-kmod/work/drm-legacy-9691917/drm/drm
*** [all_subdir_drm/drm] Error code 1

make[3]: stopped in /data/port-work/usr/ports/graphics/drm-legacy-kmod/work/drm-legacy-9691917/drm
1 error

make[3]: stopped in /data/port-work/usr/ports/graphics/drm-legacy-kmod/work/drm-legacy-9691917/drm
*** [all_subdir_drm] Error code 2

make[2]: stopped in /data/port-work/usr/ports/graphics/drm-legacy-kmod/work/drm-legacy-9691917
1 error

make[2]: stopped in /data/port-work/usr/ports/graphics/drm-legacy-kmod/work/drm-legacy-9691917
===> Compilation failed unexpectedly.
Try to set MAKE_JOBS_UNSAFE=yes and rebuild before reporting the failure to
the maintainer.
*** Error code 1

	Setting "MAKE_JOBS_UNSAFE=yes" doesn't help, and it doesn't
_seem_ to be related to ports/UPDATING entry 20200208.
	I am confused.
	Help, please.


			Respectfully,


				Robert Huff