msp430-elf cross-compiler: libstdc++ supported?

[Florian Weimer]

I'm trying to validate a change to gcc/config/msp430/msp430.cc.
The cross-compiler builds as far as I can tell, but I hit a snag while
configuring libstdc++:

checking for shl_load... configure: error: Link tests are not allowed after GCC_NO_EXECUTABLES.
make[1]: *** [Makefile:12334: configure-target-libstdc++-v3] Error 1
make[1]: Leaving directory '/root/msp/build-gcc'

Is this expected?  Is libstdc++ even supported for this target?
Thanks,
Florian