I tried different json versions 1. Installing rake 0. I figured this out — my project path had odd characters in it. The path of my app had a space and parenthesis in it — like so:. However I do not have the experience to over come every obstacle: Centos 5.
Installing pg gem with the Postgres.app
Thank you Ernst. I wondered about this in the past and dont know the answer but this as it should be. You can install it with: gem install ruby-graphviz After gem install ruby-graphviz it still gives the same LoadError I think I make a wrong assumptions about execution environments and do not know enough. Tried gem install rvm gem install bundle install rvm wrapper ruby Now bundle install works and I get much further Sorry I do not know why and how. Then, while looking back at the documentation, I realized I also had to install selenium-webdriver.
You might also have to run the following command before installing selenium-webdriver. Ubuntu Community Ask! Home Questions Tags Users Unanswered. Can't install gem: Failed to build gem native extension while trying to install Watir Ask Question. I am trying to install Watir, but when I try to run sudo gem install watir I get this error Building native extensions. This could take a while Zanna Cloud9 is a good option if you have trouble installing Ruby on Rails on your Mac.
Make sure you have the latest version of macOS. Under the Apple menu, check "About This Mac. You can install macOS Allow plenty of time for the download and installation it may take several hours. The Terminal application or console gives us access to the Unix command line, or shell. Launch the Terminal application.
Then try out the terminal application by entering a shell command:. This is a longtime convention that indicates you should enter a command in the terminal application. The Unix shell command whoami returns your username. Xcode is Apple's software library for macOS developers. You need the full Xcode package if you are doing development of applications for the Apple operating systems but you don't need all of Xcode for Rails development. You just need the Xcode Command Line Tools.
Here's how to install the Xcode Command Line Tools. The Xcode package is not installed. Jump to the next section and install only the Xcode Command Line Tools. If Xcode is installed, you will need to update Xcode to the newest version Xcode 7. Go to the App Store application and check "Updates.
For many Rails projects, you will need the C language compiler to install gems that use native extensions.
For example, you can enter gcc , git , or make. Alternatively, you can use a command to install Xcode Command Line Tools. It will produce a similar alert box. Note the double hyphen:. The instructions in the alert box are confusing. If you have a slow Internet connection, it may take many minutes. If the download takes a very long time over an hour or fails, you can try an alternative. You'll be asked to agree to the terms of the Apple Developer Program.
You'll see a list of software packages you can download. Look for the latest version of Command Line Tools and click to download the. Downloading the. Install the.
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The Xcode Command Line Tools must be installed before you go to the next steps. Just to be certain, verify that gcc is installed:. Before installing Ruby on Rails, you should configure Git. Git is automatically installed as part of the Xcode Command Line Tools. Git provides a source control repository.
Developers use Git to roll back code changes as needed, to collaborate with others, and deploy applications for hosting with a service such as Heroku. See the article Rails with Git and GitHub for more background. First, list the current settings with the git config -l --global command. Then set user. Before you do this, it is a good idea to create an account on GitHub. You don't have to, but it is important to use the same email address for git and for GitHub. Don't just copy and paste the code below.
Edit it to add your name and the email address you've used for GitHub. If you did not use a password to log in to your Mac that is, if your password is blank , you cannot install Homebrew. Many developers use Homebrew to install various Unix software packages. If Homebrew is not installed, install it:. Ignore the scary warning and enter your Mac password. You won't see the characters as you type. Press enter when you are done. You may notice that we use Ruby to install Homebrew. We use the macOS pre-installed system version of Ruby to install Homebrew. Soon we'll add a newer version of Ruby using RVM.
You can use Homebrew to install gpg , an encryption program used to check the security of the RVM download. Installing gpg eliminates a warning message which will halt installation of RVM. If your Mac user name contains a space character, you must change you account name to remove the space. RVM includes an "autolibs" option to identify and install components needed for your operating system. If you already have RVM installed, update it to the latest version and install Ruby:. You can use rvm implode to remove all traces of RVM from your system except changes it makes to your shell files such as.
IRC on freenode requires registration see how to register. RVM will leave your "system Ruby" untouched and use your shell to intercept any calls to Ruby. The system Ruby will remain on your system and the RVM version will take precedence. Ruby 2.
You can check for the current recommended version of Ruby. You must specify a version number to install the newest stable Ruby version:. You may be asked to enter a password. When you enter the password, type carefully.
Installing Rmagick on OSX High Sierra
You will not see the characters you enter. Sometimes a precompiled version of Ruby is available. If not, it takes a long time about five minutes to install Ruby because the computer must compile the source code. RubyGems is the package manager in Ruby. We use it to install software packages that add functionality to Ruby.
Don't type the number you see above.