1YACC: w - -B flag unsupported, reconfigure with --enable-btyacc 2Usage: YACC [options] filename 3 4Options: 5 -b file_prefix set filename prefix (default "y.") 6 -B create a backtracking parser 7 -d write definitions (.tab.h) 8 -i write interface (y.tab.i) 9 -g write a graphical description 10 -l suppress #line directives 11 -L enable position processing, e.g., "%locations" 12 -o output_file (default ".tab.c") 13 -p symbol_prefix set symbol prefix (default "yy") 14 -P create a reentrant parser, e.g., "%pure-parser" 15 -r produce separate code and table files (y.code.c) 16 -s suppress #define's for quoted names in %token lines 17 -t add debugging support 18 -v write description (y.output) 19 -V show version information and exit 20