Re: [Flex-help] Error changing yylex return.

[Fabricio S. P. <fab...@gm...>]

On 03/04/2016 11:33 PM, Chris verBurg wrote:
> I gave this a shot on my own (using the same version) and got it working
> with a tweak.  My next question: where did lex.yy.h come from?  As far as I
> know, flex does not generate header files unless you put it in C++ mode.  I
> got your main.c to compile by changing its include from "lex.yy.h" to
> "lex.yy.c", and the resulting binary recognizes "test" input and prints out
> "T: 2.000000".

Chris the lex.yy.h came from flex command line option:
Files:
   -o, --outfile=FILE      specify output filename
   -S, --skel=FILE         specify skeleton file
   -t, --stdout            write scanner on stdout instead of lex.yy.c
       --yyclass=NAME      name of C++ class
       --header-file=FILE   create a C header file in addition to the 
scanner

--header-file option

> Of course the best-practices answer is to not to #include a .c file, but
> rather add a bunch of extern declarations and link, blah blah blah...  But
> the point is the YY_DECL worked.
>
> -Chris
>
>
> On Wed, Mar 2, 2016 at 6:13 AM, Fabricio S. Paranhos <
> fab...@gm...> wrote:
>
>>> What version of flex are you running?
>>
>> flex 2.5.39
>>
>>
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-- 
Fabrício S. Paranhos