Compilation problem under Slackware 9

Hello there,

I'm kinna new to this stuff, so if anybody could tell me, what's going on:

make[2]: Entering directory `/usr/local/src/poedit-1.2.2/src'
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\" 
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DSTDC_HEADERS=1 
-DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 
-DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 
-DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1  -I. -I. 
-I../extras/wx-contrib/include    -g -O2 -DUSE_TRANSMEM 
-DDB_HEADER=\"db.h\" -O3 -I/usr/lib/wx/include/gtk-2.4 
-DGTK_NO_CHECK_CASTS -D__WXGTK__ -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES 
"-DPOEDIT_PREFIX=\"/usr/local\"" -MT transmem.o -MD -MP -MF 
".deps/transmem.Tpo" \
  -c -o transmem.o `test -f 'transmem.cpp' || echo './'`transmem.cpp; \
then mv ".deps/transmem.Tpo" ".deps/transmem.Po"; \
else rm -f ".deps/transmem.Tpo"; exit 1; \
fi
transmem.cpp: In constructor `DbBase::DbBase(const wxString&, DBTYPE)':
transmem.cpp:310: cannot convert `const wxChar*' to `DB_TXN*' in argument
   passing
make[2]: *** [transmem.o] Error 1
make[2]: Leaving directory `/usr/local/src/poedit-1.2.2/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/usr/local/src/poedit-1.2.2/src'
make: *** [all-recursive] Error 1

thanks in advance.