Geant3 can not compile with root v5-20-00

Hi all,
  I do not know where I should ask for help about the problem of Geant3, so I sent both mailing list, I wish somebody could give me some helps...  After I compiled with the new root version v5-20-00 successfully, I can not recompile geant3 (v1-9) again, before everything works fine for me, Could somebody tell me where I did wrong? Thanks in advance!
  Cheers...Yaxian

[maoyx_at_iopp-server pro]$ make
added/loadmod.F
make: O2: Command not found
make: [/direct/data04/ALICE/maoyx/soft/GEANT3/v1-9/tgt_linux/added/loadmod.o] Error 127 (ignored)
gbase/gbhsta.F
make: O2: Command not found
make: [/direct/data04/ALICE/maoyx/soft/GEANT3/v1-9/tgt_linux/gbase/gbhsta.o] Error 127 (ignored)
gbase/geamon.F
make: O2: Command not found
make: [/direct/data04/ALICE/maoyx/soft/GEANT3/v1-9/tgt_linux/gbase/geamon.o] Error 127 (ignored)
gbase/getnum.F
make: O2: Command not found
make: [/direct/data04/ALICE/maoyx/soft/GEANT3/v1-9/tgt_linux/gbase/getnum.o] Error 127 (ignored)
gbase/getver.F
make: O2: Command not found
make: [/direct/data04/ALICE/maoyx/soft/GEANT3/v1-9/tgt_linux/gbase/getver.o] Error 127 (ignored)
gbase/gffgo.F
make: O2: Command not found
make: [/direct/data04/ALICE/maoyx/soft/GEANT3/v1-9/tgt_linux/gbase/gffgo.o] Error 127 (ignored)
gbase/gfhead.F
make: O2: Command not found
make: [/direct/data04/ALICE/maoyx/soft/GEANT3/v1-9/tgt_linux/gbase/gfhead.o] Error 127 (ignored)
gbase/gfhsta.F
...
g++: minicern/lnxgs/rdmin.o: No such file or directory make: *** [/direct/data04/ALICE/maoyx/soft/GEANT3/v1-9/lib/tgt_linux/libgeant321.so] Error 1

The configure of root compilation is as follows: #!/bin/sh

ALIEN_ROOT=/direct/data04/ALICE/maoyx/soft/AliEn/$VERSION ./configure \

--with-f77=g77 \
--with-pythia6-uscore=SINGLE \
--disable-rfio \
--enable-mathmore --enable-mathcore --enable-roofit \
--enable-asimage --enable-minuit2 \
--enable-alien \
--with-alien-incdir=${ALIEN_ROOT}/api/include \
--with-alien-libdir=${ALIEN_ROOT}/api/lib \
--with-alien-libdir=${ALIEN_ROOT}/lib
make
make install Received on Mon Jun 30 2008 - 17:03:50 CEST