build failure (gcov.1)

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

[...]

dependall ===> external/gpl3/gcc/usr.bin/libcpp
dependall ===> external/gpl3/gcc/usr.bin/libdecnumber
dependall ===> external/gpl3/gcc/usr.bin/gcov
#      link  gcov/gcov
/usr/src/obj/tooldir.NetBSD-7.99.33-amd64/bin/x86_64--netbsd-c++
--sysroot=/usr/src/obj/destdir.amd64  -pie  -shared-libgcc
-Wl,-z,relro -Wl,--warn-shared-textrel     -o gcov  gcov.o
-Wl,-rpath-link,/usr/src/obj/destdir.amd64/lib  -L=/lib
/usr/src/external/gpl3/gcc/usr.bin/common/obj/libcommon.a
/usr/src/external/gpl3/gcc/usr.bin/libcpp/obj/libcpp.a
/usr/src/external/gpl3/gcc/lib/libbacktrace/obj/libbacktrace.a
/usr/src/external/gpl3/gcc/lib/libiberty/obj/libiberty.a
/usr/src/external/gpl3/gcc/usr.bin/libdecnumber/obj/libdecnumber.a
-lintl
/usr/src/obj/tooldir.NetBSD-7.99.33-amd64/bin/nbctfmerge -t -g -L
VERSION -g -o gcov gcov.o
#    create  gcov/gcov.debug
(  /usr/src/obj/tooldir.NetBSD-7.99.33-amd64/bin/x86_64--netbsd-objcopy
--only-keep-debug gcov gcov.debug  &&
/usr/src/obj/tooldir.NetBSD-7.99.33-amd64/bin/x86_64--netbsd-objcopy
--strip-debug -p -R .gnu_debuglink  --add-gnu-debuglink=gcov.debug
gcov  ) || (rm -f gcov.debug; false)
nbmake[9]: don't know how to make gcov.1. Stop

nbmake[9]: stopped in /usr/src/external/gpl3/gcc/usr.bin/gcov

*** Failed target:  dependall
*** Failed command: cd "/usr/src/external/gpl3/gcc/usr.bin/gcov";
/usr/src/obj/tooldir.NetBSD-7.99.33-amd64/bin/nbmake realall
*** Error code 2

Stop.
nbmake[8]: stopped in /usr/src/external/gpl3/gcc/usr.bin/gcov

*** Failed target:  dependall-gcov
*** Failed command: _makedirtarget() { dir="$1"; shift; target="$1";
shift; case "${dir}" in /*) this="${dir}/"; real="${dir}" ;; .)
this="external/gpl3/gcc/usr.bin/";
real="/usr/src/external/gpl3/gcc/usr.bin" ;; *)
this="external/gpl3/gcc/usr.bin/${dir}/";
real="/usr/src/external/gpl3/gcc/usr.bin/${dir}" ;; esac;
show=${this:-.}; echo "${target} ===> ${show%/}${1:+ (with: $@)}"; cd
"${real}" && /usr/src/obj/tooldir.NetBSD-7.99.33-amd64/bin/nbmake
_THISDIR_="${this}" "$@" ${target}; }; _makedirtarget gcov dependall
*** Error code 1

Stop.
nbmake[7]: stopped in /usr/src/external/gpl3/gcc/usr.bin

*** Failed target:  dependall-usr.bin
*** Failed command: _makedirtarget() { dir="$1"; shift; target="$1";
shift; case "${dir}" in /*) this="${dir}/"; real="${dir}" ;; .)
this="external/gpl3/gcc/"; real="/usr/src/external/gpl3/gcc" ;; *)
this="external/gpl3/gcc/${dir}/";
real="/usr/src/external/gpl3/gcc/${dir}" ;; esac; show=${this:-.};
echo "${target} ===> ${show%/}${1:+ (with: $@)}"; cd "${real}" &&
/usr/src/obj/tooldir.NetBSD-7.99.33-amd64/bin/nbmake
_THISDIR_="${this}" "$@" ${target}; }; _makedirtarget usr.bin
dependall
*** Error code 1

[...]