ruby on rails - Error with sudo gem install sqlite3 and gem install sqlite3 -

error 'gem install sqlite3'

'error: while executing gem ... (gem::filepermissionerror) don't have write permissions /library/ruby/gems/2.0.0 directory.'

and error while 'sudo gem install sqlite3'

"1 warning generated. compiling exception.c compiling sqlite3.c compiling statement.c linking shared-object sqlite3/sqlite3_native.bundle clang: error: unknown argument: '-multiply_definedsuppress' [-wunused-command-line-argument-hard-error-in-future] clang: note: hard error (cannot downgraded warning) in future make: * [sqlite3_native.bundle] error 1

make failed, exit code 2

gem files remain installed in /library/ruby/gems/2.0.0/gems/sqlite3-1.3.9 inspection. results logged /library/ruby/gems/2.0.0/extensions/universal-darwin-13/2.0.0/sqlite3-1.3.9/gem_make.out"

i have installed rvm , used 'sudo' gem install sqlite3 , gem install sqlite3 . missing?

thx!

you should not use sudo rvm. however, may rvm default ruby system ruby.

to install new ruby version using rvm:

rvm install 2.1.1 

after installed rvm list make sure installed:

rvm list 

and list of installed rubies.

rvm rubies     ruby-2.0.0-p247 [ x86_64 ]    ruby-2.1.1 [ x86_64 ]  # => - current # =* - current && default #  * - default 

note show list. need select 1 installed if not selected already:

 rvm use 2.1.1 

then, running rvm list again, should see this:

rvm rubies     ruby-2.0.0-p247 [ x86_64 ] =* ruby-2.1.1 [ x86_64 ]  # => - current # =* - current && default #  * - default 

note difference, , how have local 2.1.1 ruby selected. safe run

gem install sqlite3