Cannot make libnl

Hello! While compiling libnl I get the following errors: route/cls/ematch_grammar.c:773:5: error: unknown type name 'YYSTYPE' route/cls/ematch_grammar.c:816:1: error: unknown type name 'YYSTYPE' route/cls/ematch_grammar.c:818:23: error: unknown type name 'YYSTYPE' route/cls/ematch_grammar.c:931:17: error: unknown type name 'YYSTYPE' route/cls/ematch_grammar.c:954:1: error: unknown type name 'YYSTYPE' route/cls/ematch_grammar.c:2433:1: error: unknown type name 'YYSTYPE' route/cls/ematch_grammar.c:2439:23: error: unknown type name 'YYSTYPE' route/cls/ematch_grammar.c:1766:26: warning: 'yy_get_previous_state' defined but not used [-Wunused-function] route/cls/ematch_grammar.c:1799:26: warning: 'yy_try_NUL_trans' defined but not used [-Wunused-function] route/cls/ematch_grammar.c:1631:12: warning: 'yy_get_next_buffer' defined but not used [-Wunused-function] make[2]: *** [route/cls/ematch_grammar.lo] Error 1 make[2]: Exiting `/libnl/lib' make[1]: *** [all] Error 2 make[1]: Exiting `/libnl/lib' make: *** [all-recursive] Error 1 I've tried bison 2.2, 2.3 and 2.6.2 with no success. Byacc and flex are also installed. Is it possible to fix these errors somehow? Unfortunately my knowledge of source syntax is not sufficient. With best regards, C470IP.