Build fails on armv7hl unless --disable-elf-hack is used, crashing with a segfault while running elfhack on libxul.so


Makefile:102: FULL_NSPR_CFLAGS=
===
=== If you get failures below, please file a bug describing the error
=== and your environment (compiler and linker versions), and use
=== --disable-elf-hack until this is fixed.
===
cd ../../dist/bin; find . -name "*.so" | xargs ../../build/unix/elfhack/elfhack
./libmozjs.so: Reduced by 16272 bytes
./libmozalloc.so: No gain. Skipping
./components/libdbusservice.so: No gain. Skipping
./components/libmozgnome.so: No gain. Skipping
./libxul.so: xargs: ../../build/unix/elfhack/elfhack: terminated by signal 11
make[1]: Leaving directory `/builddir/build/BUILD/xulrunner-7.0/mozilla-release/xulrunner/installer'
make[1]: *** [elfhack] Error 125
make: *** [install] Error 2


Seen with 7.0-1.fc15 and 7.0.1-1.fc15


gcc-4.6.1-9.fc15.0.arm1.armv7hl
gcc (GCC) 4.6.1 20110908 (Red Hat 4.6.1-9)

binutils-2.21.51.0.6-7.fc15.armv7hl

relevant build flags:
-march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=hard 


Have not filed an upstream bug report yet as I am not 100% sure what file it agains. Core? or Firefox?