[openbeos] cc1plus: Invalid option `-fmultiple-symbol-spaces'

Can someone help with this error-

        cc1plus: Invalid option `-fmultiple-symbol-spaces'

 been getting it for quite some time now, and when I comment out the 
line, the build works, but I feel like I'm masking a problem instead of 
solving it.

...updated 3 target(s)...
MkDir1 objects/x86.release.haiku/add-ons/input_server/methods
MkDir1 objects/x86.release.haiku/add-ons/input_server/methods/canna
C++ objects/x86.release.haiku/add-ons/input_server/methods/canna/
CannaInterface.o
cc1plus: Invalid option `-fmultiple-symbol-spaces'
/boot/home/trunk/src/add-ons/input_server/methods/canna/
CannaInterface.cpp: In method `int CannaInterface::ConvertSpecial(char, 
long unsigned int, long int)':      

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