It could help if you post ur files. Maybe theres something wrong. hmm i´m this on the following way
bison -d -oparser.c parser.y // -d option creates the header for the token used in the flexer flex -oflexer.c flexer.l gcc -oparser.o -c parser.c gcc -oflexer.o -c flexer.c gcc flexer.o parser.o Regards 2010/3/10, john30 <rp...@mailinator.com>: > > Hi, I am working on a bison parser and I get this error when compiling: > > Undefined symbols: > "NFA::setFinal(int)", referenced from: > doString(char, NFA&)in ccVcU1O4.o > negarRang(NFA&) in ccVcU1O4.o > doElement(char, char)in ccVcU1O4.o > yyparse() in ccVcU1O4.o > "NFA::getFinals()", referenced from: > doRepeticions(int*, NFA&) in ccVcU1O4.o > doRepeticions(int*, NFA&) in ccVcU1O4.o > doRepeticions(int*, NFA&) in ccVcU1O4.o > "NFA::addTransition(int, int, char)", referenced from: > doString(char, NFA&)in ccVcU1O4.o > doString(char, NFA&)in ccVcU1O4.o > negarRang(NFA&) in ccVcU1O4.o > doElement(char, char)in ccVcU1O4.o > doElement(char, char)in ccVcU1O4.o > doElement(char, char)in ccVcU1O4.o > doElement(char, char)in ccVcU1O4.o > doRepeticions(int*, NFA&) in ccVcU1O4.o > doRepeticions(int*, NFA&) in ccVcU1O4.o > doRepeticions(int*, NFA&) in ccVcU1O4.o > yyparse() in ccVcU1O4.o > yyparse() in ccVcU1O4.o > "NFA::plus()", referenced from: > yyparse() in ccVcU1O4.o > "NFA::NFA()", referenced from: > doString(char, NFA&)in ccVcU1O4.o > negarRang(NFA&) in ccVcU1O4.o > doElement(char, char)in ccVcU1O4.o > doRepeticions(int*, NFA&) in ccVcU1O4.o > doRepeticions(int*, NFA&) in ccVcU1O4.o > doRepeticions(int*, NFA&) in ccVcU1O4.o > yyparse() in ccVcU1O4.o > yyparse() in ccVcU1O4.o > yyparse() in ccVcU1O4.o > yyparse() in ccVcU1O4.o > yyparse() in ccVcU1O4.o > yyparse() in ccVcU1O4.o > "NFA::setInitial(int)", referenced from: > doString(char, NFA&)in ccVcU1O4.o > negarRang(NFA&) in ccVcU1O4.o > doElement(char, char)in ccVcU1O4.o > doRepeticions(int*, NFA&) in ccVcU1O4.o > doRepeticions(int*, NFA&) in ccVcU1O4.o > yyparse() in ccVcU1O4.o > "NFA::addOptional()", referenced from: > yyparse() in ccVcU1O4.o > "yylex()", referenced from: > yyparse() in ccVcU1O4.o > "NFA::concatenate(NFA&)", referenced from: > doString(char, NFA&)in ccVcU1O4.o > doRepeticions(int*, NFA&) in ccVcU1O4.o > doRepeticions(int*, NFA&) in ccVcU1O4.o > doRepeticions(int*, NFA&) in ccVcU1O4.o > yyparse() in ccVcU1O4.o > "NFA::one_of(NFA&)", referenced from: > yyparse() in ccVcU1O4.o > yyparse() in ccVcU1O4.o > "NFA::addState()", referenced from: > doString(char, NFA&)in ccVcU1O4.o > doString(char, NFA&)in ccVcU1O4.o > negarRang(NFA&) in ccVcU1O4.o > negarRang(NFA&) in ccVcU1O4.o > doElement(char, char)in ccVcU1O4.o > doElement(char, char)in ccVcU1O4.o > doRepeticions(int*, NFA&) in ccVcU1O4.o > doRepeticions(int*, NFA&) in ccVcU1O4.o > yyparse() in ccVcU1O4.o > yyparse() in ccVcU1O4.o > "NFA::star()", referenced from: > yyparse() in ccVcU1O4.o > ld: symbol(s) not found > collect2: ld returned 1 exit status > > > I don't think it's because of some include missing (I have all includes > needed to read the functions). I compile the files like: > > bison -dvt p5.y > flex -c++ -d p5.l > g++ lex.yy.cc p5.tab.c -lfl -o main > > Could you help me? > > Thanks in advance > -- > View this message in context: > http://old.nabble.com/Help-with-bison-errors-tp27848610p27848610.html > Sent from the Gnu - Bison - Help mailing list archive at Nabble.com. > > > > _______________________________________________ > help-bison@gnu.org http://lists.gnu.org/mailman/listinfo/help-bison > _______________________________________________ help-bison@gnu.org http://lists.gnu.org/mailman/listinfo/help-bison
