amd64 build failure

[Paul Goyette <paul%vps1.whooppee.com@localhost>]

With up-to-date sources, I got:

#    create  libstdc++-v3/ext-inst.d
CC=/build/netbsd-local/tools/x86_64/amd64/bin/x86_64--netbsd-c++ /build/netbsd-local/tools/x86_64/amd64/bin/nbmkdep -f ext-inst.d.tmp  -- -I/build/netbsd-local/dest/amd64/usr/include/g++/backward      --sysroot=/build/netbsd-local/dest/amd64 -I/build/netbsd-local/src/external/gpl3/gcc.old/dist/gcc -I/build/netbsd-local/src/external/gpl3/gcc.old/dist/include -I/build/netbsd-local/src/external/gpl3/gcc.old/dist/libstdc++-v3/libsupc++ -I/build/netbsd-local/src/external/gpl3/gcc.old/dist/libgcc -I/build/netbsd-local/src/external/gpl3/gcc.old/lib/libstdc++-v3/../libstdc++-v3/arch/x86_64 -I. -DHAVE_STDLIB_H -DHAVE_STRING_H -I/build/netbsd-local/src/external/gpl3/gcc.old/dist/libstdc++-v3/include -I/build/netbsd-local/src/external/gpl3/gcc.old/lib/libstdc++-v3/arch/x86_64 -D_GLIBCXX_SHARED -DGTHREAD_USE_WEAK -DSUPPORTS_WEAK      /build/netbsd-local/src/external/gpl3/gcc.old/dist/libstdc++-v3/src/c++98/ext-inst.cc &&  mv ext-inst.d.tmp ext-inst.d
In file included from /build/netbsd-local/src/external/gpl3/gcc.old/dist/libstdc++-v3/include/ext/rope:56:0,
                 from /build/netbsd-local/src/external/gpl3/gcc.old/dist/libstdc++-v3/src/c++98/ext-inst.cc:29:
/build/netbsd-local/src/external/gpl3/gcc.old/dist/libstdc++-v3/include/tr1/functional:1336:2: error: #endif without #if
nbmkdep: compile failed.
*** [ext-inst.d] Error code 1





+------------------+--------------------------+-------------------------+
| Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:       |
| (Retired)        | FA29 0E3B 35AF E8AE 6651 | paul at whooppee.com    |
| Kernel Developer | 0786 F758 55DE 53BA 7731 | pgoyette at netbsd.org  |
+------------------+--------------------------+-------------------------+