From: Brian Candler <b.candler@...>
Date: 2009-04-30T00:18:07+09:00
Subject: Re: Ruby Interface of Erlang

BTW, I haven't been able to get it to build yet - it's stuck looking for 
-lei

$ ruby configure.rb 
--with-ei-dir=/usr/lib/erlang/lib/erl_interface-3.5.7
*** ./extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
  --with-opt-dir
  --without-opt-dir
  --with-opt-include
  --without-opt-include=${opt-dir}/include
  --with-opt-lib
  --without-opt-lib=${opt-dir}/lib
  --with-make-prog
  --without-make-prog
  --srcdir=.
  --curdir
  --ruby=/usr/local/bin/ruby
  --with-ei-dir
  --with-ei-include
  --without-ei-include=${ei-dir}/include
  --with-ei-lib
  --without-ei-lib=${ei-dir}/lib
  --with-eilib
  --without-eilib
checking for erl_init() in -lei... no
error: erl_interface not found!
$ ls /usr/lib/erlang/lib/erl_interface-3.5.7/
bin  doc  include  info  lib  src
$

I've tried various values for --with-eir without success. This is under 
Ubuntu Hardy but with erlang 12.b.3 from Intrepid. (Works fine with 
CouchDB, for example).

On a different point, I noticed the following in the C source:

  //check: all elements' must be ErlixTerm
  for(i=0;i<RARRAY(array)->len;i++){
    VALUE e=RARRAY(array)->ptr[i];
    if(!IS_ETERM(e)){
      rb_raise(rb_eTypeError,"all tuple's elements must be ErlixTerm!");
    }
  }

I think it could be useful if some automatic conversions were done here. 
e.g. Fixnum converted to Erlix[::]Int automatically, String to a List, 
maybe Array to Tuple. However maybe they're done elsewhere - as I say, 
I've not been able to run it yet.

Regards,

Brian.
-- 
Posted via http://www.ruby-forum.com/.