Re: implicit declaration of function 'yylex' is invalid in C99

On Jan 15, 2022, at 03:57, Akim Demaille wrote:

> I personally feel that generating these prototypes automatically is actually more complex (for the user, not for Bison) than merely specifying them.

Ok. Can you provide any guidance for how to specify them?

I am a maintainer of packages within the MacPorts package management system. I've encountered many of our ports that fail to build for this reason, and I haven't known how to fix them. For other implicit declaration of function problems it's usually been a simple matter of including a missing header or writing a function prototype, but with bison/flex, there isn't a .c or .h file into which such a prototype could be inserted, and even if I knew what file to insert it into, I wouldn't know what prototype to write.