ocamlopt -inline 10 -linkall -o mlnet \
             unix.cmxa str.cmxa -ccopt " " -cclib "-lz  " -cclib -lbz2 -ccopt "-pthread" \
          \
         -cclib "-lgd " -ccopt "" \
         -cc 'g++ -g -O2' -ccopt '-fno-omit-frame-pointer -mno-omit-leaf-frame-pointer' \
         -cclib -lmagic \
        -I build    build/cdk.cmxa    build/magic.cmxa    build/common.cmxa    build/client.cmxa    build/core.cmxa    build/driver.cmxa    src/daemon/common/commonMain.cmx
src/utils/cdk/gdstubs.o: In function `ml_image_arc_fill_native':
/home/alex/Software/mlnet/mldonkey-2.8.5/src/utils/cdk/gdstubs.c:264: undefined reference to `gdImageFilledArc'
collect2: ld devolvió el estado de salida 1
Error during linking
make: *** [mlnet] Error 2