Question

Just got a new macbook pro and im having troubles installing rails..
I got ruby 1.8.7 already installed and when i try to write ‘gem install rails’ i get:

ERROR:  While executing gem ... (Gem::FilePermissionError)
You don't have write permissions into the /Library/Ruby/Gems/1.8 directory.

I also tried to install a higher version of ruby and it said:

    Nirs-MacBook-Pro:~ nirohayon$ rvm install 1.9.3
Fetching yaml-0.1.4.tar.gz to /Users/nirohayon/.rvm/archives
Extracting yaml-0.1.4.tar.gz to /Users/nirohayon/.rvm/src
Configuring yaml in /Users/nirohayon/.rvm/src/yaml-0.1.4.
Error running ' ./configure --prefix="/Users/nirohayon/.rvm/usr"  ', please read /Users/nirohayon/.rvm/log/ruby-1.9.3-p125/yaml/configure.log
Compiling yaml in /Users/nirohayon/.rvm/src/yaml-0.1.4.
Error running 'make ', please read /Users/nirohayon/.rvm/log/ruby-1.9.3-p125/yaml/make.log


Database file /Users/nirohayon/.rvm/config/packages does not exist.

Installing Ruby from source to: /Users/nirohayon/.rvm/rubies/ruby-1.9.3-p125, this may take a while depending on your cpu(s)...

ruby-1.9.3-p125 - #fetching 
ruby-1.9.3-p125 - #extracted to /Users/nirohayon/.rvm/src/ruby-1.9.3-p125 (already extracted)
ruby-1.9.3-p125 - #configuring 
Error running ' ./configure --prefix=/Users/nirohayon/.rvm/rubies/ruby-1.9.3-p125 --enable-shared --disable-install-doc --with-libyaml --with-opt-dir=/Users/nirohayon/.rvm/usr ', please read /Users/nirohayon/.rvm/log/ruby-1.9.3-p125/configure.log
There has been an error while running configure. Halting the installation.
ls: /Users/nirohayon/.rvm/rubies/*/bin/ruby: No such file or directory

PLEASE help me, i used windows before and also pretty new to rails, so i dont know much about which path should i direct my terminal. i need a step by step explanation to put rails up and standing on my mac.

Thanks so much!
Nir

Answer 1

Your use of RVM looks a lot like you don’t have the developer tools installed. Grab XCode from the App Store, the install the command line tools!

If you really want to install rails on the platform-provided ruby, all you need to do is to sudo gem install rails, for you need to use administrator privileges to isntall gems in the system gemset.