build failure w/ up-to-date src

[bch <brad.harder%gmail.com@localhost>]

dependall ===> lib/../external/bsd/am-utils/lib/libamu
nbmake[6]: /usr/src/external/bsd/am-utils/lib/libamu/obj/.depend,
2305: ignoring stale .depend for
/usr/src/external/bsd/am-utils/lib/libamu/obj/config_local.h
#    create  libamu/hasmntopt.d
CC=/usr/src/obj/tooldir.NetBSD-7.99.41-amd64/bin/x86_64--netbsd-gcc
/usr/src/obj/tooldir.NetBSD-7.99.41-amd64/bin/nbmkdep -f
hasmntopt.d.tmp  --   -std=gnu99
--sysroot=/usr/src/obj/destdir.amd64 -DHAVE_CONFIG_H
-I/usr/src/external/bsd/am-utils/lib/libamu/../../include
-I/usr/src/external/bsd/am-utils/dist/libamu
-I/usr/src/external/bsd/am-utils/dist/include
-I/usr/src/external/bsd/am-utils/lib/libamu/obj -DDEBUG
-DHAVE_MAP_HESIOD=1 -DHAVE_MAP_LDAP=1 -DHAVE_LBER_H=1 -DHAVE_LDAP_H
-DHAVE_LDAP_OPEN=1 -DLDAP_DEPRECATED=1 -DHAVE_MAP_NIS=1
/usr/src/external/bsd/am-utils/dist/libamu/hasmntopt.c &&  mv
hasmntopt.d.tmp hasmntopt.d
In file included from
/usr/src/external/bsd/am-utils/dist/libamu/hasmntopt.c:43:0:
/usr/src/external/bsd/am-utils/lib/libamu/../../include/config.h:1482:26:
fatal error: config_local.h: No such file or directory
compilation terminated.
nbmkdep: compile failed.

*** Failed target:  hasmntopt.d
*** Failed command:
CC=/usr/src/obj/tooldir.NetBSD-7.99.41-amd64/bin/x86_64--netbsd-gcc
/usr/src/obj/tooldir.NetBSD-7.99.41-amd64/bin/nbmkdep -f
hasmntopt.d.tmp -- -std=gnu99 --sysroot=/usr/src/obj/destdir.amd64
-DHAVE_CONFIG_H
-I/usr/src/external/bsd/am-utils/lib/libamu/../../include
-I/usr/src/external/bsd/am-utils/dist/libamu
-I/usr/src/external/bsd/am-utils/dist/include
-I/usr/src/external/bsd/am-utils/lib/libamu/obj -DDEBUG
-DHAVE_MAP_HESIOD=1 -DHAVE_MAP_LDAP=1 -DHAVE_LBER_H=1 -DHAVE_LDAP_H
-DHAVE_LDAP_OPEN=1 -DLDAP_DEPRECATED=1 -DHAVE_MAP_NIS=1
/usr/src/external/bsd/am-utils/dist/libamu/hasmntopt.c && mv
hasmntopt.d.tmp hasmntopt.d
*** Error code 1

Stop.
nbmake[6]: stopped in /usr/src/external/bsd/am-utils/lib/libamu

*** Failed target:  dependall-libamu
*** Failed command: _makedirtarget() { dir="$1"; shift; target="$1";
shift; case "${dir}" in /*) this="${dir}/"; real="${dir}" ;; .)
this="lib/../external/bsd/am-utils/lib/";
real="/usr/src/external/bsd/am-utils/lib" ;; *)
this="lib/../external/bsd/am-utils/lib/${dir}/";
real="/usr/src/external/bsd/am-utils/lib/${dir}" ;; esac;
show=${this:-.}; echo "${target} ===> ${show%/}${1:+ (with: $@)}"; cd
"${real}" && /usr/src/obj/tooldir.NetBSD-7.99.41-amd64/bin/nbmake
_THISDIR_="${this}" "$@" ${target}; }; _makedirtarget libamu dependall
*** Error code 1