Bizarre error running a program linked against a shared lib (help please!)

[Yves Arrouye <yves@realnames.com>]

gabier% make
../../../data/ebcdic-xml-us.ucm -> ./makeconv: error while loading shared
libraries: ../../common/libicu-uc.so.1: undefined symbol:
.gnu.linkonce.t__tf24ForwardCharacterIterator
make: *** [../../data/ebcdic-xml-us.cnv] Error 127
gabier% nm -p -a ../../common/libicu-uc.so.1 | grep tf24Forward
00042af0 T .gnu.linkonce.t.__tf24ForwardCharacterIterator
00042af0 W __tf24ForwardCharacterIterator
gabier%                   

Any idea? It looks to me that the symbol is defined and should be found. I
have libc6-2.1.94-3 on an unstable dist I updated yesterday.

Thanks,
YA
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