rvm - gem install ruby-debug19 - *** extconf.rb failed *** -


i blew away , re-installed rvm fix issues.

now, however, when try , install ruby-debug19 get:

$ gem install ruby-debug19  ... ...  building native extensions.  take while... error:  error installing ruby-debug19:     error: failed build gem native extension.      /users/snowcrash/.rvm/rubies/ruby-2.2.1/bin/ruby -r ./siteconf20150619-25075-s8ve57.rb extconf.rb checking vm_core.h... no *** extconf.rb failed *** not create makefile due reason, lack of necessary libraries and/or headers.  check mkmf.log file more details.  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/snowcrash/.rvm/rubies/ruby-2.2.1/bin/$(ruby_base_name)     --with-ruby-dir     --without-ruby-dir     --with-ruby-include     --without-ruby-include=${ruby-dir}/include     --with-ruby-lib     --without-ruby-lib=${ruby-dir}/lib /users/snowcrash/.rvm/gems/ruby-2.2.1/gems/ruby_core_source-0.1.5/lib/ruby_core_source.rb:39:in `create_makefile_with_core': uninitialized constant ruby_core_source::config (nameerror)     extconf.rb:19:in `<main>'  extconf failed, exit code 1  gem files remain installed in /users/snowcrash/.rvm/gems/ruby-2.2.1/gems/linecache19-0.5.12 inspection. results logged /users/snowcrash/.rvm/gems/ruby-2.2.1/extensions/x86_64-darwin-14/2.2.0-static/linecache19-0.5.12/gem_make.out

and log contains these lines.

any suggestions?

ruby-debug19 works on ruby 1.9. ruby 2.0 , above use byebug.

gem install byebug

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