build error in chart library

This is on Mandriva Cooker i586 with gcc 4.1.2 (CVS):

g++ -O2 -g -pipe -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fomit-frame-pointer -march=i586 -mtune=generic -fasynchronous-unwind-tables -DHAVE_XSHAPE_H=1 -DHAVE_XSHM_H=1 -DFOX_THREAD_SAFE=1 -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT -D_GNU_SOURCE -DHAVE_JPEG_H=1 -DHAVE_PNG_H=1 -DHAVE_TIFF_H=1 -DHAVE_ZLIB_H=1 -DHAVE_BZ2LIB_H=1 -DHAVE_XCURSOR_H=1 -DHAVE_XRENDER_H=1 -DHAVE_XRANDR_H=1 -DNO_XIM -DHAVE_CUPS_H=1 -Wall -W -Woverloaded-virtual -Wformat -Wshadow -DHAVE_GLU_H=1 -DHAVE_GL_H=1 -I/usr/include -o .libs/chart chart.o icons.o ./.libs/libCHART-1.7.so -L/usr/lib ../src/.libs/libFOX-1.7.so /usr/lib/libXcursor.so /usr/lib/libXfixes.so /usr/lib/libXrandr.so /usr/lib/libXext.so /usr/lib/libXrender.so /usr/lib/libX11.so /usr/lib/libXau.so /usr/lib/libXdmcp.so -ldl -lpthread -lrt -lpng /usr/lib/libtiff.so /usr/lib/libjpeg.so -lc -lz /usr/lib/libbz2.so -lm -lcups -lnsl -lGLU -lGL
../src/.libs/libFOX-1.7.so: undefined reference to `vtable for FX::FXReactor'
collect2: ld returned 1 exit status
make[1]: *** [chart] Fehler 1
make[1]: Leaving directory `/tmp/goetz-BUILD/fox-1.7.5/chart'
make: *** [all-recursive] Fehler 1