NanoBSD install phase failing for releng/11

[Guido Falsi]

Hi,

While building a NanoBSD image using releng/11 sources I got this error
message:

===> lib/libc++ (install)
install  -C -o root -g wheel -m 444   libc++.a
/usr/local/nanobsd/rr-trunk/obj/_.w/usr/lib/
install  -s -o root -g wheel -m 444     libc++.so.1
/usr/local/nanobsd/rr-trunk/obj/_.w/usr/lib/
install  -S -C -o root -g wheel -m 444   libc++.ld
/usr/local/nanobsd/rr-trunk/obj/_.w/usr/lib/libc++.so
===> lib/libcxxrt (install)
install  -C -o root -g wheel -m 444   libcxxrt.a
/usr/local/nanobsd/rr-trunk/obj/_.w/usr/lib/
install  -s -o root -g wheel -m 444     libcxxrt.so.1
/usr/local/nanobsd/rr-trunk/obj/_.w/lib/
install -l rs  /usr/local/nanobsd/rr-trunk/obj/_.w/lib/libcxxrt.so.1
/usr/local/nanobsd/rr-trunk/obj/_.w/usr/lib/libcxxrt.so
install: symlink ../../lib/libcxxrt.so.1 ->
/usr/local/nanobsd/rr-trunk/obj/_.w/usr/lib: File exists
*** Error code 71

Stop.

I'm not sure what's happening, I already tried reverting locally
r301880, thinking it could be related, but this changed nothing.

Anyone has some insight? It was working fine up to August 4th.

Thanks in advance to anyone giving me some hint!

-- 
Guido Falsi <mad at madpilot.net>