CURRENT: buildworld fails to compile: cannot find -lctf cc: error: linker command failed [libproc.so.3]

Recent sources (Revision: 272529) fail to compile:

[...]
cc -m32 -march=native -DCOMPAT_32BIT  -isystem /usr/obj/usr/src/lib32/usr/include/
-L/usr/obj/usr/src/lib32/usr/lib32  -B/usr/obj/usr/src/lib32/usr/lib32  -O2 -pipe -O3 -O3
-pipe  -DYP -I/usr/obj/usr/src/lib32/usr/include/rpcsvc -std=gnu99 -fstack-protector
-Wsystem-headers -Werror -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int
-Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value
-Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -Wno-switch
-Wno-switch-enum -Wno-knr-promoted-parameter -Wno-parentheses -Qunused-arguments
-c /usr/src/lib/librpcsvc/yp_passwd.c -o yp_passwd.o --- all_subdir_libproc --- ---
libproc.so.3 --- /usr/obj/usr/src/tmp/usr/bin/ld: skipping
incompatible /usr/obj/usr/src/tmp/usr/lib/libctf.so when searching for
-lctf /usr/obj/usr/src/tmp/usr/bin/ld: skipping
incompatible /usr/obj/usr/src/tmp/usr/lib/libctf.a when searching for
-lctf /usr/obj/usr/src/tmp/usr/bin/ld: cannot find -lctf cc: error: linker command failed
with exit code 1 (use -v to see invocation) *** [libproc.so.3] Error code 1

make[5]: stopped in /usr/src/lib/libproc
--- libproc.a ---
ranlib -D libproc.a
[...]

oh