"make xconfig" error (2.4.25 devel)

[HappyPhot]

Hello,
  I am trying "linuxppc_2_4_devel-2005-10-25-1440".
The "make xconfig" seems not work. ("make menuconfig" is ok)
It shows :
======================================
....
./tkparse < ../arch/ppc/config.in >> kconfig.tk
arch/ppc/8xx_io/Config.in: 312: unknown define_bool value
make[1]: *** [kconfig.tk] Error 1
....
======================================
  Does this version support "make xconfig" ?

thank you,
/HappyPhot