Help with bison errors

[john30]

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
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