toolchain/42014: Can't cross-compile netbsd 5.0.1 toolchain on snow leopard

[urumisama%excite.co.jp@localhost]

>Number:         42014
>Category:       toolchain
>Synopsis:       Can't cross-compile netbsd 5.0.1 toolchain on snow leopard
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    toolchain-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Sep 08 08:20:00 +0000 2009
>Originator:     Urumi Kanzaki
>Release:        5.0.1
>Organization:
>Environment:
Darwin urumi 10.0.0 Darwin Kernel Version 10.0.0: Fri Jul 31 22:47:34 PDT 2009; 
root:xnu-1456.1.25~1/RELEASE_I386 i386
>Description:
$ ./build.sh -m i386 tools
===> build.sh command: ./build.sh -m i386 tools
===> build.sh started: Tue Sep  8 04:14:45 EDT 2009
===> NetBSD version:   5.0.1
===> MACHINE:          i386
===> MACHINE_ARCH:     i386
===> Build platform:   Darwin 10.0.0 i386
...
dependall ===> compat
mkdir -p include/sys include/machine include/rpc include/arpa
rm -f config.cache
CC=cc CFLAGS=-O LDFLAGS=  /bin/sh /Volumes/eve/usr/src/tools/compat/configure 
--cache-file=config.cache
configure: creating cache config.cache
checking for gcc... cc
checking for C compiler default output... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for executable suffix... 
checking for object suffix... o
checking whether we are using the GNU C compiler... yes
checking whether cc accepts -g... yes
checking how to run the C preprocessor... cc -E
checking for NetBSD... no
checking for sh... /bin/sh
checking whether byte ordering is bigendian... no
checking for ANSI C header files... yes
checking for zlib.h... yes
checking for gzdopen in -lz... yes
checking for sys/ioctl.h... yes
checking for sys/mman.h... yes
checking for sys/mtio.h... no
configure: error: standard system header file not found

>How-To-Repeat:

>Fix: