Build error on amd64

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

While building tools, I get

In file included from 
/build/netbsd-local/src_ro/tools/binutils/../../external/gpl3/binutils/dist/bfd/i386netbsd.c:38:
/build/netbsd-local/src_ro/tools/binutils/../../external/gpl3/binutils/dist/bfd/
netbsd.h:54:10: fatal error: bfd.h: No such file or directory
 #include "bfd.h"
          ^~~~~~~
compilation terminated.
*** [i386netbsd.lo] Error code 1



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