wip/firefox on NetBSD/i386 4.0

Building wip/firefox on NetBSD/i386 4.0 fails with:

make[3]: Leaving directory 
`/home/reed/pkgsrc/wip/firefox/work/mozilla-1.9.1/js/src'
make[3]: Entering directory 
`/home/reed/pkgsrc/wip/firefox/work/mozilla-1.9.1/js/src'
rm -f libmozjs.so
c++ -I/usr/include -I/usr/pkg/include/python2.5 -I/usr/pkg/include 
-I/usr/pkg/include/freetype2  -fno-rtti -fno-exceptions -Wall 
-Wpointer-arith -Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy 
-Wno-non-virtual-dtor -Wcast-align -Wno-invalid-offsetof -Wno-long-long 
-O2 -I/usr/include -I/usr/pkg/include/python2.5 -I/usr/pkg/include 
-I/usr/pkg/include/freetype2 -fno-strict-aliasing -Dunix -fshort-wchar 
-pthread -pipe  -DNDEBUG -DTRIMMED -O2 -fPIC -DPIC -shared 
-Wl,-soname,libmozjs.so -o libmozjs.so  jsapi.o jsarena.o jsarray.o 
jsatom.o jsbool.o jscntxt.o jsdate.o jsdbgapi.o jsdhash.o jsdtoa.o 
jsemit.o jsexn.o jsfun.o jsgc.o jshash.o jsinterp.o jsinvoke.o jsiter.o 
jslock.o jslog2.o jsmath.o jsnum.o jsobj.o json.o jsopcode.o jsparse.o 
jsprf.o jsregexp.o jsscan.o jsscope.o jsscript.o jsstr.o jsutil.o 
jsxdrapi.o jsxml.o prmjtime.o jstracer.o Assembler.o Fragmento.o LIR.o 
RegAlloc.o avmplus.o Nativei386.o jsbuiltins.o     -lpthread -L/usr/lib 
-Wl,-R/usr/lib -L/usr/pkg/lib/python2.5/config -L/usr/pkg/lib 
-Wl,-R/usr/pkg/lib  -Wl,-rpath-link,/bin -Wl,-rpath-link,/usr/pkg/lib  
-L/home/reed/pkgsrc/wip/firefox/work/mozilla-1.9.1/dist/lib -lplds4 -lplc4 
-lnspr4 -L/usr/lib -L/usr/pkg/lib/python2.5/config -L/usr/pkg/lib -pthread 
-lm -lm  -lm  
usage: rm [-f|-i] [-dPRrvW] file ...
make[3]: *** [libmozjs.so] Error 1
make[3]: *** Deleting file `libmozjs.so'
make[3]: Leaving directory 
`/home/reed/pkgsrc/wip/firefox/work/mozilla-1.9.1/js/src'
make[2]: *** [libs_tier_js] Error 2
make[2]: Leaving directory 
`/home/reed/pkgsrc/wip/firefox/work/mozilla-1.9.1'
make[1]: *** [tier_js] Error 2
make[1]: Leaving directory 
`/home/reed/pkgsrc/wip/firefox/work/mozilla-1.9.1'
gmake: *** [all] Error 2
*** Error code 2



I don't know why it says leaving and then entering the same directory.
I can't find the errant "rm" command.

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