gcj static crosscompiling raises issues with boehm-gc

hi gcj experts,

i've spent some time already trying to statically cross compile a java source 
for an embedded mipsel architecture. i'm using openembedded and gcc-4.4.4 with 
the latest java part imported from master

in the makefile, i am using the command

$(CROSS_COMPILE)gcj $(JFLAGS) $(SOURCES) \
		-static-libgcj \
		-fjni \
		-g \
		-o dumphd-mipsel-static \
		 --main=dumphd.core.DumpHD \
		-nostdlib \
		-L/dream/oe1.6/dm8000/build/tmp/staging/mipsel-oe-linux/usr/lib \
		-L/dream/projects/bluray/aacskeys-0.4.0c-mipsel/lib/linux/ \
		-Wl,-rpath-link,/dream/oe1.6/dm8000/build/tmp/staging/mipsel-oe-
linux/usr/lib \
		-Wl,-rpath-link,/dream/projects/bluray/aacskeys-0.4.0c-
mipsel/lib/linux/ -laacskeys \
		-shared-libgcc -Wl,-non_shared -lgcj -Wl,-call_shared -lstdc++ -
Wl,--as-needed -lgcc_s -lpthread -lc -lm -ldl -lrt -Wl,--no-as-needed -Wl,-O1

this may contain a lot of redundancies or look silly in many ways but for 
right now i just aggregated as much as possible in there from what i could find 
online.

i've also set 
CLASSPATH=/dream/oe1.6/dm8000/build/tmp/cross/mipsel/bin/ecj.jar:./

when i run make, linking fails:

/dream/oe1.6/dm8000/build/tmp/cross/mipsel/lib/gcc/mipsel-oe-
linux/4.4.4/../../../../mipsel-oe-linux/bin/ld: warning: cannot find entry 
symbol __start; defaulting to 00000000004084b0
/dream/oe1.6/dm8000/build/tmp/cross/mipsel/lib/gcc/mipsel-oe-
linux/4.4.4/../../../../mipsel-oe-linux/lib/libgcj.a(dyn_load.o): In function 
`GC_register_dynamic_libraries_dl_iterate_phdr':
/dream/oe1.6/dm8000/build/tmp/work/mipsel-oe-linux/gcc-cross-4.4.4-
r0.1/gcc-4.4.4/boehm-gc/dyn_load.c:454: undefined reference to `__data_start'
/dream/oe1.6/dm8000/build/tmp/cross/mipsel/lib/gcc/mipsel-oe-
linux/4.4.4/../../../../mipsel-oe-linux/lib/libgcj.a(os_dep.o): In function 
`GC_register_data_segments':
/dream/oe1.6/dm8000/build/tmp/work/mipsel-oe-linux/gcc-cross-4.4.4-
r0.1/gcc-4.4.4/boehm-gc/os_dep.c:1450: undefined reference to `__data_start'
collect2: ld returned 1 exit status
make: *** [dumphd-static-new] Error 1

i'd be grateful for any suggestions or hints.

andreas