Undefined Reference To yywrap

Question

I have a simple \"language\" that I\'m using Flex(Lexical Analyzer), it\'s like this:

/* Just like UNIX wc */
%{
int chars = 0;
int words = 0;
int lines = 0;         


        

Answer 1

As a note for followers, flex 2.6.3 has a bug where libfl.a "typically would" define yywrap but then doesn't in certain instances, so check if that's your version of flex, might be related to your problem:

https://github.com/westes/flex/issues/154