Debugger cannot compile on Ruby 2.0

Question

Originally posted here: "How to use the debugger with Ruby 2.0?"

I keep ending up back here, but I have a different problem. I don't have the option to change to Byebug right now. We are currently stuck on "debugger" for now, and I cannot install it.

Building native extensions.  This could take a while...
ERROR:  Error installing debugger:
  ERROR: Failed to build gem native extension.

    /Users/mbridges/.rbenv/versions/2.0.0-p247/bin/ruby extconf.rb
*** 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=/Users/mbridges/.rbenv/versions/2.0.0-p247/bin/ruby
/Users/mbridges/.rbenv/versions/2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:51:in `require': cannot load such file -- debugger/ruby_core_source (LoadError)
  from /Users/mbridges/.rbenv/versions/2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:51:in `require'
  from extconf.rb:16:in `<main>'

Anyone have any ideas?

Using `debugger` for rubies after 2.0 is not a good idea. I don't get why you're stuck on `debugger`. You don't have control over your own development environment? — deivid, Dec 03 '13 at 00:26
I'm stuck on `debugger` because it is a dependency of `pry-debugger` which we rely on heavily for development. — Matt Bridges, Dec 03 '13 at 23:46
possible duplicate of [How to use the debugger with ruby 2.0?](http://stackoverflow.com/questions/15200165/how-to-use-the-debugger-with-ruby-2-0) — number5, Apr 26 '15 at 13:59

Eric Guo · Answer 1 · 2015-04-26T13:55:33.097

Update: Now Ruby 2.1+ should using byebug instead of debugger.

clone the debugger-ruby_core_source to local folder, e.g. C:\git\debugger-ruby_core_source
copy C:\git\debugger-ruby_core_source\lib to C:\Ruby200\lib\ruby\gems\2.0.0\gems\debugger-ruby_core_source-1.3.2
run the gem install debugger again.

I'm now sure why the gems debugger-ruby_core_source didn't copy the lib to that folder, but certainly the debugger need it.

Debugger cannot compile on Ruby 2.0

1 Answers1