zoom$ cat Makefile
#       $NetBSD$

NOMAN=  # defined

.include <bsd.own.mk>

HOSTPROGNAME=   ${_TOOL_PREFIX}dtc
HOST_SRCDIR=    external/gpl2/dtc/usr.bin/dtc

FDTOBJ!=        cd ${.CURDIR}/../libfdt && ${PRINTOBJDIR}
LDADD+=         -L${FDTOBJ} -lfdt

.include "${.CURDIR}/../Makefile.nbincludes"
.include "${.CURDIR}/../Makefile.host"
zoom$ 
I-search: 
zoom$ nbmake-evbearmv7hf-el 
#   compile  dtc/dtc-parser.lo
cc -O -I/wrk/commit/src/../tools/include -I/wrk/commit/src/../tools/include/nbinclude -I/wrk/commit/src/../tools/include/compat -I/wrk/commit/src/tools/compat -DHAVE_NBTOOL_CONFIG_H=1 -D_FILE_OFFSET_BITS=64 -I/wrk/commit/src/tools/dtc/../../external/gpl2/dtc/usr.bin/dtc -I/wrk/commit/src/external/gpl2/dtc/dist -I/wrk/commit/src/external/gpl2/dtc/dist/libfdt -c -o dtc-parser.lo.o    dtc-parser.c
dtc-parser.c: In function 'yyparse':
dtc-parser.c:110:36: error: 'yylloc' undeclared (first use in this function)
 #define YYERROR_DECL() yyerror(YYLTYPE *loc, const char *s)
                                    ^
dtc-parser.c:739:5: note: in expansion of macro 'YYERROR_CALL'
     }
     ^
dtc-parser.c:110:36: note: each undeclared identifier is reported only once for each function it appears in
 #define YYERROR_DECL() yyerror(YYLTYPE *loc, const char *s)
                                    ^
dtc-parser.c:739:5: note: in expansion of macro 'YYERROR_CALL'
     }
     ^
/wrk/commit/src/external/gpl2/dtc/dist/dtc-parser.y:156:19: error: 'YYSTACKDATA' has no member named 'p_mark'
     ERROR(&@3, "Label or path %s not found", $3);
                   ^
/wrk/commit/src/external/gpl2/dtc/dist/dtc-parser.y:34:17: note: in definition of macro 'ERROR'
   srcpos_error((loc), "Error", __VA_ARGS__); \
                 ^
/wrk/commit/src/external/gpl2/dtc/dist/dtc-parser.y:166:19: error: 'YYSTACKDATA' has no member named 'p_mark'
     ERROR(&@2, "Label or path %s not found", $2);
                   ^
/wrk/commit/src/external/gpl2/dtc/dist/dtc-parser.y:34:17: note: in definition of macro 'ERROR'
   srcpos_error((loc), "Error", __VA_ARGS__); \
                 ^
/wrk/commit/src/external/gpl2/dtc/dist/dtc-parser.y:176:19: error: 'YYSTACKDATA' has no member named 'p_mark'
     ERROR(&@3, "Label or path %s not found", $3);
                   ^
/wrk/commit/src/external/gpl2/dtc/dist/dtc-parser.y:34:17: note: in definition of macro 'ERROR'
   srcpos_error((loc), "Error", __VA_ARGS__); \
                 ^
/wrk/commit/src/external/gpl2/dtc/dist/dtc-parser.y:294:19: error: 'YYSTACKDATA' has no member named 'p_mark'
     ERROR(&@2, "Array elements must be"
                   ^
/wrk/commit/src/external/gpl2/dtc/dist/dtc-parser.y:34:17: note: in definition of macro 'ERROR'
   srcpos_error((loc), "Error", __VA_ARGS__); \
                 ^
/wrk/commit/src/external/gpl2/dtc/dist/dtc-parser.y:320:20: error: 'YYSTACKDATA' has no member named 'p_mark'
      ERROR(&@2, "Value out of range for"
                    ^
/wrk/commit/src/external/gpl2/dtc/dist/dtc-parser.y:34:17: note: in definition of macro 'ERROR'
   srcpos_error((loc), "Error", __VA_ARGS__); \
                 ^
/wrk/commit/src/external/gpl2/dtc/dist/dtc-parser.y:335:19: error: 'YYSTACKDATA' has no member named 'p_mark'
     ERROR(&@2, "References are only allowed in "
                   ^
/wrk/commit/src/external/gpl2/dtc/dist/dtc-parser.y:34:17: note: in definition of macro 'ERROR'
   srcpos_error((loc), "Error", __VA_ARGS__); \
                 ^
/wrk/commit/src/external/gpl2/dtc/dist/dtc-parser.y:455:18: error: 'YYSTACKDATA' has no member named 'p_mark'
    ERROR(&@2, "Properties must precede subnodes");
                  ^
/wrk/commit/src/external/gpl2/dtc/dist/dtc-parser.y:34:17: note: in definition of macro 'ERROR'
   srcpos_error((loc), "Error", __VA_ARGS__); \
                 ^

*** Failed target:  dtc-parser.lo
*** Failed command: cc -O -I/wrk/commit/src/../tools/include -I/wrk/commit/src/../tools/include/nbinclude -I/wrk/commit/src/../tools/include/compat -I/wrk/commit/src/tools/compat -DHAVE_NBTOOL_CONFIG_H=1 -D_FILE_OFFSET_BITS=64 -I/wrk/commit/src/tools/dtc/../../external/gpl2/dtc/usr.bin/dtc -I/wrk/commit/src/external/gpl2/dtc/dist -I/wrk/commit/src/external/gpl2/dtc/dist/libfdt -c -o dtc-parser.lo.o dtc-parser.c
*** Error code 1

Stop.
nbmake: stopped in /wrk/commit/src/tools/dtc
zoom$