gistfile1.txt

~ → mkdir project_with_bundled_json
~ → cd project_with_bundled_json 
~/project_with_bundled_json → echo "gem 'json'" > Gemfile
~/project_with_bundled_json → gem bundle
Calculating dependencies...
Updating source: http://gems.rubyforge.org
Downloading json-1.1.9.gem
Installing json-1.1.9.gem
Building native extensions.  This could take a while...
Done.

~/project_with_bundled_json → ls -l vendor/gems/gems/json-1.1.9/ext/json/ext/
total 120
drwxr-xr-x  11 brent  staff    374 Sep  5 12:41 generator
-rwxr-xr-x   1 brent  staff  30280 Sep  5 12:41 generator.bundle
drwxr-xr-x  12 brent  staff    408 Sep  5 12:41 parser
-rwxr-xr-x   1 brent  staff  26048 Sep  5 12:41 parser.bundle

~/project_with_bundled_json → rm **/*.o **/*.bundle **/Makefile **/mkmf.log

~/project_with_bundled_json → ls -l vendor/gems/gems/json-1.1.9/ext/json/ext 
total 0
drwxr-xr-x  7 brent  staff  238 Sep  5 12:47 generator
drwxr-xr-x  8 brent  staff  272 Sep  5 12:47 parser

~/project_with_bundled_json → gem bundle
Calculating dependencies...
Done.

~/project_with_bundled_json → ls -l vendor/gems/gems/json-1.1.9/ext/json/ext
total 0
drwxr-xr-x  7 brent  staff  238 Sep  5 12:47 generator
drwxr-xr-x  8 brent  staff  272 Sep  5 12:47 parser