It's the following change which causes the problem:

	Module Name:	src
	Committed By:	sjg
	Date:		Thu Jun  2 05:11:55 UTC 2005

	Modified Files:
		src/sys/conf: Makefile.kern.inc

	Log Message:
	Don't assume infinite command line length.

http://mail-index.netbsd.org/source-changes/2005/06/02/0053.html

Not sure how to fix so far...

Jukka Salmi --> current-users (2005-06-02 15:10:38 +0200):
> Hi,
> 
> using HEAD sources checked out some minutes ago, building a XEN0 kernel
> fails:
> 
> $ cd /usr/src && ./build.sh [...] kernel=XEN0
> [...]
> #    create  XEN0/config_time.h
> cp config_time.src config_time.h
> #    create  XEN0/.depend
> /opt/tools/i386/bin/nbmkdep -a -- -x assembler-with-cpp -traditional-cpp -D_LOCORE -Di386 -I. -I/build/nbsd/i386/sys/arch/i386/compile/XEN0/xen-ma -I/usr/src/sys/arch -I/usr/src/sys -nostdinc -DLKM -DDIAGNOSTIC -DDEBUG -DMAXUSERS=32 -D_KERNEL -D_KERNEL_OPT -I/usr/src/sys/dist/ipf rm -f i386 ln -s /usr/src/sys/arch/i386/include i386 rm -f x86 ln -s /usr/src/sys/arch/x86/include x86 rm -rf xen-ma mkdir xen-ma ln -s ../i386 xen-ma/machine /usr/src/sys/arch/xen/i386/locore.S /usr/src/sys/arch/xen/i386/spl.S /usr/src/sys/arch/xen/i386/vector.S /usr/src/sys/arch/i386/i386/db_dbgreg.S /usr/src/sys/arch/i386/i386/in_cksum.S /usr/src/sys/crypto/des/arch/i386/des_enc.S /usr/src/sys/crypto/des/arch/i386/des_cbc.S /usr/src/sys/crypto/blowfish/arch/i386/bf_enc.S /usr/src/sys/crypto/blowfish/arch/i386/bf_cbc.S /usr/src/sys/arch/i386/i386/svr4_sigcode.S /usr/src/sys/arch/i386/i386/ibcs2_sigcode.S /usr/src/sys/arch/i386/i386/linux_sigcode.S /usr/src/sys/arch/i386/i386/freebsd_sigcode.S
> i386--netbsdelf-gcc: rm: No such file or directory
> i386--netbsdelf-gcc: ln: No such file or directory
> i386--netbsdelf-gcc: rm: No such file or directory
> i386--netbsdelf-gcc: ln: No such file or directory
> i386--netbsdelf-gcc: rm: No such file or directory
> i386--netbsdelf-gcc: mkdir: No such file or directory
> i386--netbsdelf-gcc: ln: No such file or directory
> i386--netbsdelf-gcc: ../i386: No such file or directory
> cc1: error: unrecognized option `-f'
> cc1: error: unrecognized option `-f'
> [...]
> cc1: error: unrecognized option `-f'
> cc1: error: unrecognized option `-f'
> nbmkdep: compile failed.
> 
> *** Failed target:  .depend
> *** Failed command: /opt/tools/i386/bin/nbmake -f Makefile _sfiles | CC=/opt/tools/i386/bin/i386--netbsdelf-gcc xargs -t /opt/tools/i386/bin/nbmkdep -a -- -x assembler-with-cpp -traditional-cpp -D_LOCORE -Di386 -I. -I/build/nbsd/i386/sys/arch/i386/compile/XEN0/xen-ma -I/usr/src/sys/arch -I/usr/src/sys -nostdinc -DLKM -DDIAGNOSTIC -DDEBUG -DMAXUSERS=32 -D_KERNEL -D_KERNEL_OPT -I/usr/src/sys/dist/ipf
> *** Error code 123
> 
> Stop.
> nbmake: stopped in /build/nbsd/i386/sys/arch/i386/compile/XEN0
> 
> ERROR: Failed to make depend in /build/nbsd/i386/sys/arch/i386/compile/XEN0
> *** BUILD ABORTED ***

-- 
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