bison error

[hazardpl]

bison -v -d gram.y bison report an error: gram.y: conflicts: 48 shift/reduce, 23 reduce/reduce win_bison: C:\Modex-master\Src\data/m4sugar/m4sugar.m4: cannot open: No such fil e or directory

[nimble-code]

I've no idea what the m4sugar.m4 files is all about -- it's not part of the distribution. the format looks odd as well, with some forward and backward slashes mixed. i assume you're executing this on a windows system (given the filename)? a call to 'make' on my system (windows, with cygwin), proceeds normally as follows: bison -v -d gram.y gram.y: warning: 48 shift/reduce conflicts [-Wconflicts-sr] gram.y: warning: 23 reduce/reduce conflicts [-Wconflicts-rr] mv gram.tab.c gram.c mv gram.tab.h gram.h gcc -g -c -o heap.o heap.c gcc -g -c -o nmetab.o nmetab.c gcc -g -c -o symtab.o symtab.c gcc -g -c -o modex.o modex.c gcc -g -c -o xtract.o xtract.c gcc -g -c -o token.o token.c gcc -g -c -o tree.o tree.c gcc -g -c -o treestk.o treestk.c flex lexer.l mv lex.yy.c lexer.c gcc -g -c -o lexer.o lexer.c gcc -g -c -o gram.o gram.c gcc -g -c -o dflow.o dflow.c gcc -g -c -o prnttree.o prnttree.c gcc -g -c -o modex_pp.o modex_pp.c gcc -g -c -o ps_graph.o ps_graph.c gcc -o modex heap.o nmetab.o symtab.o modex.o xtract.o token.o tree.o treestk.o lexer.o gram.o dflow.o prnttree.o modex_pp.o ps_graph.o -lm (and there's no Src/data directory there)

[hazardpl]

thanks! the problem is solved step1 my bison is not install correct , re-install bison will be OK; step2 I modified pram.y line50 / The next line makes the parser re-entrant. / //%define api.pure full %pure_parser but,I dont know why. : )