build failure (gmake: static declaration of 'bsd_signal' follows non-static declaration)

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

dependall-gmake ===> tools
dependall ===> tools/gmake
install-gmake ===> tools
install ===> tools/gmake
Making install in glob
Making install in config
Making install in po
if test "make" = "gettext-tools"; then  /bin/sh
/usr/src/tools/gmake/../../external/gpl2/gmake/dist/config/mkinstalldirs
/usr/src/obj/tooldir.NetBSD-7.99.30-amd64/share/gettext/po;  for file
in Makefile.in.in remove-potcdate.sin  quot.sed boldquot.sed
en@quot.header en@boldquot.header insert-header.sin Rules-quot
Makevars.template; do
/usr/src/obj/tooldir.NetBSD-7.99.30-amd64/bin/x86_64--netbsd-install
-c -p -r -m 644
/usr/src/tools/gmake/../../external/gpl2/gmake/dist/po/$file
/usr/src/obj/tooldir.NetBSD-7.99.30-amd64/share/gettext/po/$file;
done;  for file in Makevars; do  rm -f
/usr/src/obj/tooldir.NetBSD-7.99.30-amd64/share/gettext/po/$file;
done;  else  : ;  fi
Making install in doc
test -z "/usr/src/obj/tooldir.NetBSD-7.99.30-amd64/info" || /bin/sh
/usr/src/tools/gmake/../../external/gpl2/gmake/dist/config/mkinstalldirs
"/usr/src/obj/tooldir.NetBSD-7.99.30-amd64/info"
 install-info --info-dir='/usr/src/obj/tooldir.NetBSD-7.99.30-amd64/info'
'/usr/src/obj/tooldir.NetBSD-7.99.30-amd64/info/make.info'
install-info: No such file or directory for
/usr/src/obj/tooldir.NetBSD-7.99.30-amd64/info/make.info
NOT REBUILDING /usr/src/tools/gmake/../../external/gpl2/gmake/dist/config.h.in
NOT REBUILDING /usr/src/tools/gmake/../../external/gpl2/gmake/dist/configure
if cc -DLOCALEDIR=\"/usr/src/obj/tooldir.NetBSD-7.99.30-amd64/share/locale\"
-DLIBDIR=\"/usr/src/obj/tooldir.NetBSD-7.99.30-amd64/lib\"
-DINCLUDEDIR=\"/usr/src/obj/tooldir.NetBSD-7.99.30-amd64/include\"
-DHAVE_CONFIG_H -I.
-I/usr/src/tools/gmake/../../external/gpl2/gmake/dist -I.
-I/usr/src/tools/gmake/../../external/gpl2/gmake/dist/glob     -O -MT
main.o -MD -MP -MF ".deps/main.Tpo" -c -o main.o
/usr/src/tools/gmake/../../external/gpl2/gmake/dist/main.c;  then mv
-f ".deps/main.Tpo" ".deps/main.Po"; else rm -f ".deps/main.Tpo"; exit
1; fi
/usr/src/tools/gmake/../../external/gpl2/gmake/dist/main.c:521:1:
error: static declaration of 'bsd_signal' follows non-static
declaration
 bsd_signal (int sig, bsd_signal_ret_t func)
 ^
In file included from /usr/include/signal.h:45:0,
                 from
/usr/src/tools/gmake/../../external/gpl2/gmake/dist/make.h:70,
                 from
/usr/src/tools/gmake/../../external/gpl2/gmake/dist/main.c:19:
/usr/include/sys/signal.h:238:8: note: previous declaration of
'bsd_signal' was here
 void (*bsd_signal(int, void (*)(int)))(int);
        ^

*** Failed target:  main.o
*** Failed command: if cc
-DLOCALEDIR=\"/usr/src/obj/tooldir.NetBSD-7.99.30-amd64/share/locale\"
-DLIBDIR=\"/usr/src/obj/tooldir.NetBSD-7.99.30-amd64/lib\"
-DINCLUDEDIR=\"/usr/src/obj/tooldir.NetBSD-7.99.30-amd64/include\"
-DHAVE_CONFIG_H -I.
-I/usr/src/tools/gmake/../../external/gpl2/gmake/dist -I.
-I/usr/src/tools/gmake/../../external/gpl2/gmake/dist/glob -O -MT
main.o -MD -MP -MF ".deps/main.Tpo" -c -o main.o
/usr/src/tools/gmake/../../external/gpl2/gmake/dist/main.c; then mv -f
".deps/main.Tpo" ".deps/main.Po"; else rm -f ".deps/main.Tpo"; exit 1;
fi
*** Error code 1