From: Jim Weirich <jweirich@...>
Date: 2003-09-09T10:39:04+09:00
Subject: Re: tcltklib not built with Ruby 1.8

On Mon, 2003-09-08 at 17:49, Bermejo, Rodrigo wrote:
> Tricky but works ..
> 
> cp   /usr/include/tcl8.3/tcl.h   to    /usr/include 

Well, not quite.  Then it fails to find tclDecls.h.  Copying that leads
to problems including tk.h ... hmmm, not good.

But I got it to work.  This is how:  I modified the extconf.rb file to
include the line ...

   $CPPFLAGS << "-I/usr/include/tcl8.3"

immediately after the require 'mkmkf' line.  Then (in the ext/tcltcklib
directory) I executed a 'ruby extconf.rb', a 'make', and then a 'make
install'.  And everything was cool.

There looks like there is code in the extconf.rb file to search out the
proper version of tcl/tk, but it only runs if the have_header("tcl.h")
function returns true.  And *that* only is true if you already know
where to look for the header.  Seems kinda backwards to me, but I don't
hack with the mkmf.rb library very often..

-- 
-- Jim Weirich       jweirich@one.net      http://onestepback.org
-----------------------------------------------------------------
"Beware of bugs in the above code; I have only proved it correct, 
not tried it." -- Donald Knuth (in a memo to Peter van Emde Boas)