Re: flex 2.5.2[34] / bison 1.75b interaction

[Bruce Lilly]

Bruce Lilly wrote:

> Current workaround is:
>
> #undef YYLTYPE
> #ifndef FLEX_SCANNER
> # define YY_HEADER_NO_UNDEFS
> # include "mailflex.h"
> # undef yyout
> #endif
>
> where mailflex.h is the flex-generated header.

Actually it is a post-processed version of the header.
Post-processing is via:

        egrep -v 'yylval[^p]|<(string|errno|stdlib)\.h>' mailflex.h > z.h
        mv -f z.h mailflex.h

which also removes yylval conflicts with bison as previously
reported on the help-flex list (as well as removing a bunch
of unnecessary header #includes that only slow down compilation).