2.4.21.rc1 - make xconfig

Ran a 'make oldconfig' which completed without error, then ran:

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# make xconfig
rm -f include/asm
( cd include ; ln -sf asm-i386 asm)
make -C scripts kconfig.tk
make[1]: Entering directory `/usr/src/linux-2.4.21-rc1/scripts'
cat header.tk >> ./kconfig.tk
./tkparse < ../arch/i386/config.in >> kconfig.tk
drivers/ide/Config.in: 46: can't handle dep_bool/dep_mbool/dep_tristate
condition
make[1]: *** [kconfig.tk] Error 1
make[1]: Leaving directory `/usr/src/linux-2.4.21-rc1/scripts'
make: *** [xconfig] Error 2

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The line 46 in 'drivers/ide/Config.in' the complaint is about:

dep_tristate ' Pacific Digital ADMA-100 basic support'
CONFIG_BLK_DEV_ADMA100

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'make config' and 'make menuconfig' work correctly.