gcc and extconf fail

Question

This is the mkmf.log file that shows when the ERRORS For gcc and extconf are generated when I am trying to install Rails. 'sudo gem install rails'. I have not seen an answer that gets to the response about the mkmf.log and provides a solution.

I have installed Homebrew, RVM, Ruby, gcc, Xcode Tools, etc. These Errors are thrown during the rails install. I get some understanding about this and how I can complete the Rails 5 installation?

mkmf.log file: "gcc -o conftest -I/Users/fulbriw/.rvm/rubies/ruby- 2.2.2/include/ruby-2.2.0/x86_64-darwin14 -I/Users/fulbriw/.rvm/rubies/ruby-2.2.2/include/ruby-2.2.0/ruby/b$ ld: warning: directory not found for option '-L/Users/haven/.sm/pkg/active/lib' ld: warning: ignoring file /usr/local/lib/libz.dylib, file was built for i386 which is not the architecture being linked (x86_64): /usr/local/lib/libz.dylib checked program was: /* begin */ 1: #include "ruby.h" 2: 3: int main(int argc, char **argv) 4: { 5: return 0; 6: } /* end */

"gcc -I/Users/fulbriw/.rvm/rubies/ruby-2.2.2/include/ruby-2.2.0/x86_64-darwin14 -I/Users/fulbriw/.rvm/rubies/ruby-2.2.2/include/ruby-2.2.0/ruby/backward -I/U$
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: int main() {return 0;}
/* end */

Thank you, I have been working to resolve this since this morning. Any help will be so appreciated.

Answer 1

Never do

sudo gem install rails

let bundler install rails for you.

1) make sure the version of Rails you need is in your Gemfile.

2) run bundle install from the command line in your project.

If you get an error for not having bundler you may need to run gem install bundler first

3) ensure you are using the correct version of Rvm

run rvm list and ensure that your current version matches what is specified in the gem file.