Need to get rid of the leading spaces on all lines except the "int fileno" line. Can also forgo the "here doc" and just save the lines between "flex" and "eof" to a file. Run flex on that file. This will create lex.yy.c. Then compile lex.yy.c.
The compiled program is only useful for filtering chunked transfer encoding on stdin. Most "HTTP clients" like wget or curl already take care of processing chunked transfer encoding. It is when working with something like netcat that chunked tranfser encoding becomes "DIY". This is a simple program that attempts to solve that problem. It could be written by hand without using flex.
Okay I'll give up for now. There are really no spaces in front of the lines. In pastebin if you check the raw version you'll see they are tabs. Which get stripped out because I added a `-` before eof. Providing the file manually to flex also produces the same gibberish for me.
The compiled program is only useful for filtering chunked transfer encoding on stdin. Most "HTTP clients" like wget or curl already take care of processing chunked transfer encoding. It is when working with something like netcat that chunked tranfser encoding becomes "DIY". This is a simple program that attempts to solve that problem. It could be written by hand without using flex.