xke compilation error

[Mikhail K. <kl...@la...>]

kl@laska:/tmp/s/xke-0.01$ make
yacc -dv parse_gram.y 
parse_gram.y:62: type clash (`' `num') on default action
make: *** [parse_gram.c] Error 1

yacc --version
bison (GNU Bison) 1.35

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