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From: vu0310@bingvaxu.cc.binghamton.edu (R. Kym Horsell)
Newsgroups: comp.unix.questions,comp.misc
Subject: Re: File I/O with lex/yacc
Keywords: lex, yacc, file i/o
Message-ID: <3918@bingvaxu.cc.binghamton.edu>
Date: 30 Aug 90 16:25:18 GMT
References: <2320@cirrusl.UUCP> <1990Aug29.122152.1600@virtech.uucp> <1990Aug29.172830.14348@cunixf.cc.columbia.edu>
Reply-To: vu0310@bingvaxu.cc.binghamton.edu.cc.binghamton.edu (R. Kym Horsell)
Organization: SUNY Binghamton, NY
Lines: 21

In article <1990Aug29.172830.14348@cunixf.cc.columbia.edu> gld@cunixd.cc.columbia.edu (Gary L Dare) writes:
>
>Is there any way to get around the use of standard input/output in a
>lex file???  The C file generated by lex (from the lexical analyzer
>spec you feed in) has the following line hard-coded:
>
>	FILE *yyin = {stdin}, *yyout = {stdout};

This is a rather unfortunate idea from those responsible -- I have
discovered some C compilers that don't even *support* initialization
of pointers (dumb linkers?) so it should have been taken care of
by the main supplied in the lex & yacc libraries.

If *you* put another initialization into your lex file (which
you *could* do) you would probably get a compiler error (double
definition). 

The cleanest solution is therefore to write your *own* main
and do the assignments yourself.

-Kym Horsell