SAGE_SPKG_CONFIGURE([zn_poly], [
    SAGE_SPKG_DEPCHECK([gmp], [
       AC_CHECK_HEADER([zn_poly/zn_poly.h], [
        AC_SEARCH_LIBS([zn_mod_init], [zn_poly-0.9], [
        ], [sage_spkg_install_zn_poly=yes])
       ], [sage_spkg_install_zn_poly=yes])
    ])
])