cd sys/rump; $TOOLDIR/bin/nbmake-$MACHINE doesn't work

[Ryota Ozaki <ozaki-r%netbsd.org@localhost>]

Hi,

I sometimes build only rump-related binaries
by cd sys/rump; $TOOLDIR/bin/nbmake-$MACHINE.
It worked fine, but since one or two weeks ago,
it doesn't work for me; it fails with the
following errors:

----
cd sys/rump; ~/git/seil6/work.tools/bin/nbmake-amd64 -j9 &&
~/git/seil6/work.tools/bin/nbmake-amd64 -j9 install; cd -
all ===> include
all ===> librump
all ===> dev
all ===> fs
all ===> kern
all ===> net
all ===> share
all ===> dev/lib
all ===> include/rump
all ===> librump/rumpkern
all ===> librump/rumpdev
all ===> kern/lib
all ===> librump/rumpnet
all ===> net/lib
all ===> share/man
nbmake: "/home/ozaki-r/git/netbsd-src/sys/rump/include/rump/Makefile"
line 7: Malformed conditional ((${MKRUMP} != "no"))
nbmake: Fatal errors encountered -- cannot continue
nbmake: stopped in /home/ozaki-r/git/netbsd-src/sys/rump/include/rump
--- all-rump ---
*** [all-rump] Error code 1

nbmake: stopped in /home/ozaki-r/git/netbsd-src/sys/rump/include
1 error

nbmake: stopped in /home/ozaki-r/git/netbsd-src/sys/rump/include
--- all-include ---
*** [all-include] Error code 2

nbmake: stopped in /home/ozaki-r/git/netbsd-src/sys/rump
nbmake: "/home/ozaki-r/git/netbsd-src/sys/rump/kern/lib/../Makefile.rumpkerncomp"
line 8: Malformed conditional (${MKSLJIT} != "no")
nbmake: "/home/ozaki-r/git/netbsd-src/sys/rump/net/lib/../Makefile.rumpnetcomp"
line 9: Malformed conditional (${MKSLJIT} != "no")
nbmake: Fatal errors encountered -- cannot continue
nbmake: stopped in /home/ozaki-r/git/netbsd-src/sys/rump/kern/lib
A failure has been detected in another branch of the parallel make

nbmake: stopped in /home/ozaki-r/git/netbsd-src/sys/rump/share/man
----

After the build failure, some symlinks are created
in the source code tree:
sys/rump/librump/rumpdev/amd64
sys/rump/librump/rumpdev/i386
sys/rump/librump/rumpdev/machine
sys/rump/librump/rumpdev/x86
sys/rump/librump/rumpkern/amd64
sys/rump/librump/rumpkern/i386
sys/rump/librump/rumpkern/machine
sys/rump/librump/rumpkern/x86
sys/rump/librump/rumpnet/amd64
sys/rump/librump/rumpnet/i386
sys/rump/librump/rumpnet/machine
sys/rump/librump/rumpnet/x86

It's something wrong because I do build.sh with
-O work.amd64 so nothing should be created in
the source code tree.

Do anyone know how to fix it?

Thanks,
  ozaki-r