ongoing build issues (GCC)

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

With very latest src:


[...]
dependall ===> external/gpl3/gcc/usr.bin/host-libcpp
dependall ===> external/gpl3/gcc/usr.bin/backend
#      link  backend/genconstants
c++ -O -I. -I/usr/src/external/gpl3/gcc/usr.bin/backend/../gcc/arch/x86_64
-DIN_GCC -DHAVE_CONFIG_H -I/usr/src/external/gpl3/gcc/dist/gcc
-I/usr/src/external/gpl3/gcc/dist/gcc/.
-I/usr/src/external/gpl3/gcc/dist/gcc/../include
-I/usr/src/external/gpl3/gcc/dist/gcc/../libcpp/include
-I/usr/src/external/gpl3/gcc/dist/gcc/../libdecnumber
-I/usr/src/external/gpl3/gcc/dist/gcc/../libdecnumber/dpd
-I/usr/src/external/gpl3/gcc/dist/gcc/../libbacktrace -DGENERATOR_FILE
-I/usr/src/external/gpl3/gcc/usr.bin/backend/..  -o genconstants
genconstants.lo read-md.lo build-errors.lo
-L/usr/src/obj/tooldir.NetBSD-7.99.26-amd64/lib -lnbcompat
/usr/src/external/gpl3/gcc/usr.bin/host-libiberty/obj/libiberty/libiberty.a
#    create  backend/insn-constants.h
./genconstants /usr/src/external/gpl3/gcc/dist/gcc/common.md
/usr/src/external/gpl3/gcc/dist/gcc/config/i386/i386.md
>insn-constants.h
#   compile  backend/genattr.lo
c++ -O -I. -I/usr/src/external/gpl3/gcc/usr.bin/backend/../gcc/arch/x86_64
-DIN_GCC -DHAVE_CONFIG_H -I/usr/src/external/gpl3/gcc/dist/gcc
-I/usr/src/external/gpl3/gcc/dist/gcc/.
-I/usr/src/external/gpl3/gcc/dist/gcc/../include
-I/usr/src/external/gpl3/gcc/dist/gcc/../libcpp/include
-I/usr/src/external/gpl3/gcc/dist/gcc/../libdecnumber
-I/usr/src/external/gpl3/gcc/dist/gcc/../libdecnumber/dpd
-I/usr/src/external/gpl3/gcc/dist/gcc/../libbacktrace -DGENERATOR_FILE
-I/usr/src/external/gpl3/gcc/usr.bin/backend/.. -c -o genattr.lo.o
/usr/src/external/gpl3/gcc/dist/gcc/genattr.c
In file included from
/usr/src/external/gpl3/gcc/usr.bin/backend/../gcc/arch/x86_64/tm.h:45:0,
                 from /usr/src/external/gpl3/gcc/dist/gcc/genattr.c:25:
/usr/src/external/gpl3/gcc/dist/gcc/defaults.h:484:2: error: #error
Unknown BITS_PER_UNIT
 #error Unknown BITS_PER_UNIT
  ^
In file included from
/usr/src/external/gpl3/gcc/usr.bin/backend/../gcc/arch/x86_64/tm.h:43:0,
                 from /usr/src/external/gpl3/gcc/dist/gcc/genattr.c:25:
/usr/src/external/gpl3/gcc/dist/gcc/machmode.h:360:29: error:
'NUM_INT_N_ENTS' was not declared in this scope
 extern bool int_n_enabled_p[NUM_INT_N_ENTS];
                             ^
/usr/src/external/gpl3/gcc/dist/gcc/machmode.h:361:38: error:
'NUM_INT_N_ENTS' was not declared in this scope
 extern const int_n_data_t int_n_data[NUM_INT_N_ENTS];
                                      ^
In file included from /usr/src/external/gpl3/gcc/dist/gcc/real.h:25:0,
                 from /usr/src/external/gpl3/gcc/dist/gcc/rtl.h:26,
                 from /usr/src/external/gpl3/gcc/dist/gcc/genattr.c:26:
/usr/src/external/gpl3/gcc/dist/gcc/wide-int.h:232:5: error:
'MAX_BITSIZE_MODE_ANY_INT' was not declared in this scope
   ((MAX_BITSIZE_MODE_ANY_INT + HOST_BITS_PER_WIDE_INT) /
HOST_BITS_PER_WIDE_INT)
     ^
/usr/src/external/gpl3/gcc/dist/gcc/wide-int.h:289:46: note: in
definition of macro 'FIXED_WIDE_INT'
   generic_wide_int < fixed_wide_int_storage <N> >
                                              ^
/usr/src/external/gpl3/gcc/dist/gcc/wide-int.h:234:33: note: in
expansion of macro 'WIDE_INT_MAX_ELTS'
 #define WIDE_INT_MAX_PRECISION (WIDE_INT_MAX_ELTS * HOST_BITS_PER_WIDE_INT)
                                 ^
/usr/src/external/gpl3/gcc/dist/gcc/wide-int.h:293:25: note: in
expansion of macro 'WIDE_INT_MAX_PRECISION'
 typedef FIXED_WIDE_INT (WIDE_INT_MAX_PRECISION) widest_int;
                         ^
/usr/src/external/gpl3/gcc/dist/gcc/wide-int.h:289:47: error: template
argument 1 is invalid
   generic_wide_int < fixed_wide_int_storage <N> >
                                               ^
/usr/src/external/gpl3/gcc/dist/gcc/wide-int.h:293:9: note: in
expansion of macro 'FIXED_WIDE_INT'
 typedef FIXED_WIDE_INT (WIDE_INT_MAX_PRECISION) widest_int;
         ^
/usr/src/external/gpl3/gcc/dist/gcc/wide-int.h:289:49: error: template
argument 1 is invalid
   generic_wide_int < fixed_wide_int_storage <N> >
                                                 ^
[...]