Matt: 

Thanks for your quick reply.  The hot patch seems to work.

You may find serialport named as 'ruby-serialport'.

At one time I had serialport working in ruby 1.8.7 but then after attempting to install some other Gems I now get the error:

irb 0.9.5(05/04/13)
new-host:~ robertrice$ ruby -v
ruby 1.8.7 (2008-08-11 patchlevel 72) [i686-darwin9.7.0]
new-host:~ robertrice$ irb
irb(main):001:0> require "rubygems"
=> true
irb(main):002:0> require "serialport"
[BUG] cross-thread violation on rb_gc()
ruby 1.8.6 (2008-08-11) [universal-darwin9.0]

Abort trap
new-host:~ robertrice$ exit
logout

[Process completed]

Could you suggest a fix for this?

Thanks,
Bob Rice


On May 22, 2009, at 12:59 PM, Matt Aimonetti wrote:

For XML, you can use Cocoa API or if you want to ue REXML, you need to use the hot patch I mentioned there:

http://www.macruby.org/trac/ticket/134

Regarding the serialport library, I can't seem to see it on rubyforge, so I'm not sure what you are referring to.

- Matt

On Fri, May 22, 2009 at 9:44 AM, Robert Rice <rice.audio@pobox.com> wrote:
Dear MacRuby development team:

I am new to Ruby and I have an application that I would like to port to MacRuby. The two extensions I will need are XML and serial port I/O.
So far I have not been able to get them to work:

Last login: Fri May 22 12:31:48 on ttys000
new-host:~ robertrice$ macirb
>> require "rexml/document"
NameError: uninitialized constant REXML::Attribute::NAME_STR
       from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.1/rexml/attribute.rb:18:in `<class:Attribute>'
       from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.1/rexml/attribute.rb:9:in `<module:REXML>'
       from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.1/rexml/attribute.rb:4:in `<top (required)>'
       from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.1/rexml/element.rb:3:in `require'
       from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.1/rexml/element.rb:3:in `<top (required)>'
       from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.1/rexml/document.rb:1:in `require'
       from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.1/rexml/document.rb:1:in `<top (required)>'
       from (irb):1:in `require'
       from (irb):1
       from /usr/local/bin/macirb:12:in `<main>'
>> require "rubygems"
=> false
>> require "serialport"
LoadError: no such file to load -- serialport
       from (irb):3:in `require'
       from (irb):3
       from /usr/local/bin/macirb:12:in `<main>'
>> exit
new-host:~ robertrice$ exit
logout

[Process completed]

Can anyone help me? Do I have a bad installation of MacRuby?

Thanks,
Bob Rice
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