I am trying to do bundle in the large project on Mavericks and some gems are broken or something wrong with my environment in spite of this is fresh install of rbenv.
$ gem install debugger -v '1.5.0'
Building native extensions. This could take a while...
ERROR: Error installing debugger:
ERROR: Failed to build gem native extension.
/Users/samat/.rbenv/versions/1.9.3-p448/bin/ruby extconf.rb
checking for rb_method_entry_t.called_id in method.h... no
checking for rb_control_frame_t.method_id in method.h... no
checking for rb_method_entry_t.called_id in method.h... no
checking for rb_control_frame_t.method_id in method.h... no
Makefile creation failed
**************************************************************************
No source for ruby-1.9.3-p448 provided with debugger-ruby_core_source gem.
**************************************************************************
*** 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.
...
Have no idea of what configuration options do I need
In mkmf I see things like
"gcc -I/Users/samat/.rbenv/versions/1.9.3-p448/include/ruby-1.9.1/x86_64-darwin13.0.0 -I/Users/samat/.rbenv/versions/1.9.3-p448/include/ruby-1.9.1/ruby/backward -I/Users/samat/.rbenv/versions/1.9.3-p448/include/ruby-1.9.1 -I. -I/Users/samat/.rbenv/versions/1.9.3-p448/include/ruby-1.9.1/ruby-1.9.3-p448 -I'/Users/samat/.rbenv/versions/1.9.3-p448/include' -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -I'/Users/samat/.rbenv/versions/1.9.3-p448/include' -O3 -Wno-error=shorten-64-to-32 -pipe -c conftest.c"
conftest.c:3:10: fatal error: 'method.h' file not found
#include <method.h>
^
1 error generated.
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <method.h>
...
I use rbenv,
$ rbenv version
1.9.3-p448 (set by /Users/samat/Documents/bm-git/.ruby-version)
You better to use latest version of debugger, bc issue with your Ruby version was solved.