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Date: Tue, 27 Jan 2015 15:59:43 +0100
From: Gabriel Paubert <paubert AT iram DOT es>
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Subject: Re: [geda-user] Footprint Generator
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On Tue, Jan 27, 2015 at 06:08:23AM +0100, Kai-Martin Knaak wrote:
> So I tried the footgen on the trimble copernicus. Everything went
> smooth until the export. When I pressed the export button the
> application died with these messages on the command line:
> 
> /------------------------------------
> $ gfootgen 
> /var/lib/gems/2.1.0/gems/gfootgen-0.0.1/lib/gfootgen/gui.rb:428:in `rescue in on_export_footprint': uninitialized constant Gio::IO
> 	 from /var/lib/gems/2.1.0/gems/gfootgen-0.0.1/lib/gfootgen/gui.rb:433:in `on_export_footprint'
> 	 from /var/lib/gems/2.1.0/gems/gfootgen-0.0.1/lib/gfootgen/gui.rb:306:in `block in create_export_button'
> 	 from /var/lib/gems/2.1.0/gems/gfootgen-0.0.1/bin/gfootgen:24:in `call'
> 	 from /var/lib/gems/2.1.0/gems/gfootgen-0.0.1/bin/gfootgen:24:in `main'
> 	 from /var/lib/gems/2.1.0/gems/gfootgen-0.0.1/bin/gfootgen:24:in `<top (required)>'
> 	 from /usr/local/bin/gfootgen:23:in `load'
> 	 from /usr/local/bin/gfootgen:23:in `<main>'
> \-------------------------------------
> 
> I get the same result if I don't enter anything and just try to 
> export with the preloaded values.

I have exactly the same problem, as I was trying to define a footprint
for a QFN48 package (LTC6950) which is a 5 by 9mm and not the more
common 7 by 7 mm package already defined in the library.

I was also on a frequencly updated Debian testing machine. On another
machine I had Debian stable but ruby-gtk3 is not available, so it's
hopeless. 

I don't know Ruby at all and the syntax looks funny, with all the
special characters like the vertical bars. However, from a cursory look
at gio2.rb, I see that Gio::Error exists:

module Gio
  LOG_DOMAIN = "Gio"
    GLib::Log.set_log_domain(LOG_DOMAIN)

      class Error < StandardError
        end

[snipped],
so I replaced Gio::IO::Error with Gio::Error and the failure is
now different:

/usr/lib/ruby/vendor_ruby/gobject-introspection/loader.rb:299:in`validate_arguments': Gio::File#replace: wrong number of arguments (0 for 2..4)
         from /usr/lib/ruby/vendor_ruby/gobject-introspection/loader.rb:386:in `block in load_method_info'
         from /usr/lib/ruby/vendor_ruby/gobject-introspection/loader.rb:389:in `call'
         from /usr/lib/ruby/vendor_ruby/gobject-introspection/loader.rb:389:in `block in load_method_info'
         from /var/lib/gems/2.1.0/gems/gfootgen-0.0.1/lib/gfootgen/gui.rb:423:in `on_export_footprint'
         from /var/lib/gems/2.1.0/gems/gfootgen-0.0.1/lib/gfootgen/gui.rb:306:in `block in create_export_button'
         from /var/lib/gems/2.1.0/gems/gfootgen-0.0.1/bin/gfootgen:24:in `call'
         from /var/lib/gems/2.1.0/gems/gfootgen-0.0.1/bin/gfootgen:24:in `main'
         from /var/lib/gems/2.1.0/gems/gfootgen-0.0.1/bin/gfootgen:24:in `<top (required)>'
                                                                                 

The version of gio2 is 2.2.0-5+b2 in Debian numbering. 

However the changes between 2.1 and 2.2 from the git repository for
ruby-gio2 are extremely large, so it's not surprising. Most of
the C code has disappeared and many bindings seem to be automatically
generated through black magic, I mean gobject-introspection.

Besides that, I think that this package generator is a very good initiative,
but I'd suggest to add a BGA generation option.

    Regards,
    Gabriel