I've committed the last few changes that make it possible to
cross-build on a FreeBSD 4.x host.

. build.sh distribution - works

. build.sh build - works but when postinstall checks are run PR 20061
  manifests, though it's harmless.  it's arguable that when building
  into DESTDIR != / postinstall checks should not be run anyway.

. build.sh release - will trigger 20051 and 20061

Also note, that FreeBSD 4.x has a 64K limit to command line +
environment, so building with a long path to the root of the NetBSD
source tree will fail somewhere in toolchain (www, GNU toolchain
makefiles).  E.g. /export/netbsd/cvs/src will cause overflow, while
/nb/src will work.

SY, Uwe
-- 
uwe@ptc.spbu.ru                         |       Zu Grunde kommen
http://www.ptc.spbu.ru/~uwe/            |       Ist zu Grunde gehen