/usr/include/c++/4.2/exception:59: multiple definition of `root_category'

[@]

porting win32 project to linux, after resolving all incompatibilities still
have weird "multiple definition":

bin/gcc-4.2.4/debug/lobby.o:/usr/include/c++/4.2/exception:59: multiple
definition of `root_category'
bin/gcc-4.2.4/debug/database.o:/usr/include/c++/4.2/bits/locale_facets.tcc:2560:
first defined here
bin/gcc-4.2.4/debug/main.o:/usr/include/c++/4.2/bits/locale_classes.h:464:
multiple definition of `root_category'
bin/gcc-4.2.4/debug/database.o:/usr/include/c++/4.2/bits/locale_facets.tcc:2560:
first defined here
bin/gcc-4.2.4/debug/dbcore.o:/usr/include/c++/4.2/exception:59: multiple
definition of `root_category'
bin/gcc-4.2.4/debug/database.o:/usr/include/c++/4.2/bits/locale_facets.tcc:2560:
first defined here
bin/gcc-4.2.4/debug/aes.o:/usr/include/c++/4.2/bits/locale_classes.h:464:
multiple definition of `root_category'
bin/gcc-4.2.4/debug/database.o:/usr/include/c++/4.2/bits/locale_facets.tcc:2560:
first defined here

and no idea where to look for any clue

thanks in advance for any help
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