Error building current

[Fernando Apesteguía]

Hi,

Today I left one of my VM's (VirtualBox) updating current. I did:

make -j4 buildworld && make -j4 kernel

and finished fine. Then I rebooted and did a:

make installworld.

And at some point, I got this error:

===> usr.bin/msgs (install)
install  -s -o root -g wheel -m 555   msgs /usr/bin/msgs
install  -o root -g wheel -m 444  msgs.debug /usr/lib/debug/usr/bin/msgs.debug
install  -o root -g wheel -m 444 msgs.1.gz  /usr/share/man/man1/
===> usr.bin/bmake (install)
install  -s -o root -g wheel -m 555   make /usr/bin/make
install  -o root -g wheel -m 444  make.debug /usr/lib/debug/usr/bin/make.debug
install  -o root -g wheel -m 444 make.1.gz  /usr/share/man/man1/
===> usr.bin/bmake/tests (install)
ld-elf.so.1: /usr/obj/usr/src/amd64.amd64/tmp/legacy/usr/sbin/make:
Undefined symbol "regcomp at FBSD_1.6"
*** Error code 1

Stop.
make[5]: stopped in /usr/src/usr.bin/bmake
*** Error code 1

uname -a
FreeBSD vm-current 13.0-CURRENT FreeBSD 13.0-CURRENT #1 r363784: Mon
Aug  3 16:15:22 CEST 2020
root at vm-current:/usr/obj/usr/src/amd64.amd64/sys/GENERIC  amd64

Has anyone experienced this?

Thanks in advance.