ruby-debug install error: failed to build gem native extension

Question

I\'m running 1.9.2 with rails 3.

I\'m using rvm.

I did:

sudo gem install ruby-gem

and got:

Building native exte         


        

Answer 1

In your gemfile, change your ruby-debug line to this:

gem 'ruby-debug19', :require => 'ruby-debug'

My source is http://dirk.net/2010/04/17/ruby-debug-with-ruby-19x-and-rails-3-on-rvm/

Answer 2

just use this one:

[sudo] gem update --system 

Solution comes from http://rubygems.org/pages/download

Answer 3

The problem here can be that the install script is going off to get the Ruby Header files over the web (to build the debugger gem against) but doesn't find them for the particular patch-level of Ruby you're after. This is what's going on in the output line

Looking for http://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.2-p14.tar.gz and all I got was a 404! (URI::NotFoundError)

As a solution you can point to your local copy of the Ruby source which rvm has already used to build ruby on your machine. Here goes...

gem install ruby-debug19 -- --with-ruby-include=$rvm_path/src/ruby-1.9.2-head/

Many thanks to Dirk at the following link which helped solve this

• http://dirk.net/2010/04/17/ruby-debug-with-ruby-19x-and-rails-3-on-rvm/

Answer 4

Installing gem ruby-debug-base19x also failed due to connection problems by using cntlm proxy and "--with-ruby-include" didn't worked for me. Installing the gem without a proxy worked smoothly.

Answer 5

For windows, search your ruby dir for vm_core.h and then use that dir as your include path. For me, that's

gem install ruby-debug-base19 -- --with-ruby-include=C:\JRuby\lib\native\include\ruby-1.9.3-p392

Then I had to check:

C:\JRuby\lib\ruby\gems\shared\gems\linecache19-0.5.12\ext\trace_nums\gem_make.out

and move ruby/ruby.h into the include directory above.

Now I have some other error, fix it a bit later...

Answer 6

the ruby-debug gem is not compatible to Ruby 1.9.2 and later . replace gem 'ruby-debug19' with following You need use the gem ruby-debug19 So change in your Gemfile to use this one

gem 'ruby-debug19'