Wireshark · Wireshark-users: Re: [Wireshark-users] Build failures with ascend.c

[Guy Harris <guy@xxxxxxxxxxxx>]

On Feb 19, 2018, at 12:26 AM, Jungle Boogie <jungleboogie0@xxxxxxxxx> wrote:

> I can't build wireshark from master src because of this:
> CC       toshiba.lo
>  CC       visual.lo
>  CC       vms.lo
>  CC       vwr.lo
>  CC       wtap.lo
>  CC       wtap_opttypes.lo
>  CC       ascend.lo
> ascend.c: In function 'ascendparse':
> ascend.c:38:20: error: declaration of 'ascendlval' shadows a global declaration [-Werror=shadow]                                                                                    
> #define yylval     ascendlval
>                    ^
> ascend.c:670:14: note: in expansion of macro 'yylval'
>     YYSTYPE  yylval;
>              ^
> In file included from ./ascend.y:150:0:
> ascend.h:25:16: note: shadowed declaration is here
> extern YYSTYPE ascendlval;
>                ^
> cc1: all warnings being treated as errors
> Makefile:936: recipe for target 'ascend.lo' failed
> make[3]: *** [ascend.lo] Error 1

What version of Flex do you have?

I've seen similar issues when building libpcap on at least some BSDs, but not when building it on some versions of Linux distributions or on macOS.