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Re: Multiple parsers/scanners with automake

From: Svend Sorensen
Subject: Re: Multiple parsers/scanners with automake
Date: Mon, 21 Mar 2005 13:57:59 -0800

After more research, I stumbled on:

which recommeds %option prefix="foo" in the Lex file to add the
prefix.  This seems to be working.

On Mon, 21 Mar 2005 12:51:18 -0800, Svend Sorensen <address@hidden> wrote:
> I am trying to convert my program ( to use
> automake and autoconf (my first attempt at using these tools).  I am
> having some difficulty because the code uses two sets of scanners and
> parsers.
> Previously, my hand hacked Makefile had included the following lines:
> toc_scan.c: LFLAGS+= -Ptoc_yy
> cue_scan.c: LFLAGS+= -Pcue_yy
> toc_parse.c: YFLAGS+= -p toc_yy
> cue_parse.c: YFLAGS+= -p cue_yy
> (these only work with gmake).  I have read the automake manual
> regarding Yacc and Lex support.  So far, I have used the list of
> recommended defines, and that has allowed me to remove the Yacc
> command line prefixes in the Makefile.
> I am unsure what to do now regarding the Lex prefixes.  The automake
> manual seems to indicate that only Yacc requires the variable
> prefixing hack, but I am getting variable redefined errors when I
> don't use the Lex command line prefix.
> I have looked at the gdb source, which is recommeded by the automake
> manual.  However, gdb only seems to have one Lex file, so it only
> helped me with the Yacc part.  In addition, gdb seems to only use
> autoconf, not automake.  Again, this is my first attempt at using the
> automake/autoconf tools, so I could be wrong about this.
> Do I have to find a list of symbol names used by Lex, and redefine
> them to have a prefix?  Is there any examples of packages that have
> multiple Yacc _and_ Lex files that use autoconf/automake?

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