problem when 'make' gnatcoll in windows using mingw

[Dwiki <dwiki.jtk07@gmail.com>]

hello again,
its another newbie question about installing gnatcoll in windows,
im trying to install gnatcoll in windows using mingw,
im using gnatcoll-gpl-2010-src.tgz, this is the result of ./configure command :


configure: --------- Summary for GNAT Components --------------
configure:  Shared libraries: yes (default: static)
configure:  Gtk+:   yes
configure:     Make sure pkg-config is in your PATH
configure:     and gtkada.gpr in your project path
configure:  Python: no no
configure:     use --with-python to override
configure:  PyGtk:  no
configure:     use --enable-pygtk to override
configure:  Syslog: no
configure:     use --enable-syslog to override
configure:  PostgreSQL: no
configure:     use --with-postgresql to override
configure:  Sqlite: no
configure:     use --with-sqlite to override
configure:  Projects: yes
configure:  gmp: no
configure:     use --with-gmp to override
configure: --------------------------------------------

but when i execute 'make' command, it show me error : 

gprbuild -m -j -XLIBRARY_TYPE=static -Pgnatcoll_build -p
gprbuild: illegal option "-j" on the command line

im using gcc (GCC) 4.3.4

thank you.....