Hi,

this is on i386 -current, /usr/src union-mounted like so (if it matters):
/dev/wd0i               35061832  28130596   3423624    89%    /u
<above>:/u/NetBSD/lsrc  63192428  56261192   3423624    94%    /u/NetBSD/src

and build.sh called with objdir etc (if it makes a difference):
./build.sh -N 1 -o -u -U -m i386 -O /u/NetBSD/arch/i386/obj -D /u/NetBSD/arch
/i386/dest -T /u/NetBSD/arch/i386/TOOLS distribution

[...]
dependall ===> usr.sbin/ndiscvt
/u/NetBSD/arch/i386/TOOLS/bin/nbyacc: f - cannot open "inf-parse.y"

*** Failed target:  y.tab.h
*** Failed command: /u/NetBSD/arch/i386/TOOLS/bin/nbyacc -v -d inf-parse.y
*** Error code 2

Stop.
nbmake: stopped in /u/NetBSD/src/usr.sbin/ndiscvt

*** Failed target:  dependall-ndiscvt
*** Failed command: _makedirtarget() { dir="$1"; shift; target="$1"; shift; case "${dir}" in /*) thi
s="${dir}/"; real="${dir}" ;; .) this="usr.sbin/"; real="/u/NetBSD/src/usr.sbin" ;; *) this="usr.sbi
n/${dir}/"; real="/u/NetBSD/src/usr.sbin/${dir}" ;; esac; show=${this:-.}; echo "${target} ===> ${sh
ow%/}${1:+ (with: $@)}"; cd "${real}" && /u/NetBSD/arch/i386/TOOLS/bin/nbmake _THISDIR_="${this}" "$
@" ${target}; }; _makedirtarget ndiscvt dependall
*** Error code 1
[...]

Kurt