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I'm having some trouble installing jekyll. Can't quite figure out how to patch the missing link. I think it's an update to Ruby, but RVM is having trouble installing alternate versions of ruby as well.

Heres the full post:

$ sudo gem install jekyll    

ERROR:  Error installing jekyll:
ERROR: Failed to build gem native extension.

    /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb
mkmf.rb can't find header files for ruby at /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ruby.h


Gem files will remain installed in /Library/Ruby/Gems/1.8/gems/fast-stemmer-1.0.1 for inspection.
Results logged to /Library/Ruby/Gems/1.8/gems/fast-stemmer-1.0.1/ext/gem_make.out

Does this mean I need to update the version of ruby I'm using via rvm?

Rivera answered 23/5, 2012 at 18:29 Comment(5)

What commands specifically are you running to update RVM and then switch your ruby version? – Unthinkable 23/5, 2012 at 19:11

Hey Noah, I was trying $ rvm install ruby-1.9.2-p320 – Rivera 23/5, 2012 at 19:25

It would be helpful if you gave the exact commands you issued followed by the complete output. Try to use code highlighting too. – Unthinkable 23/5, 2012 at 19:41

Thanks for pointing that out Noah, I added the command I issued for the jekyll install and what it output. – Rivera 23/5, 2012 at 20:4

what does which make return? – Unthinkable 23/5, 2012 at 20:17

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Your problem is that either you system doesn't know where make is located at or you don't have it installed. The easiest way to fix this (and probably other issues you'll run into trying to get a ruby system up and running) is to install xcode.

You can get it at http://itunes.apple.com/us/app/xcode/id497799835?ls=1&mt=12 for lion. Or it came on a CD with your computer for earlier versions.

If you're using Lion, please see comments below for a link to how to install developer tools on Lion.

Unthinkable answered 23/5, 2012 at 20:58 Comment(9)

Great! Thanks Noah, glad to hear that's the problem. About 30 min into the install now. – Rivera 23/5, 2012 at 21:41

I saw you're relatively new here so if my solution works you should come back and mark it as an acceptable answer so others can benefit from it. – Unthinkable 23/5, 2012 at 21:54

Absolutely, Thanks so much for your help @NoahClark - Unfortunately though, I've installed xcode and am still getting the same issue when running the sudo gem install jekyll - I'll try and update ruby again via rvm? – Rivera 24/5, 2012 at 13:38

running the which make command also is still coming back empty – Rivera 24/5, 2012 at 13:41

What does typing in /usr/bin/make at the command line give you? Have you ever compiled anything for source on your system before? – Unthinkable 24/5, 2012 at 16:27

I'm getting /usr/bin/make: No such file or directory. But I've actually just noticed something rather peculiar, My .gem .rvm .gitconfig files are are installed in the /Users/Username directory. This is actually a work computer I've not used much for dev, I am definitely fairly new to command line tools and had all of this working on my personal mac, using the work computer now I'm thinking the user settings are all jammed up. I don't think some important things are installed in the right directories. – Rivera 24/5, 2012 at 17:56

Which means I don't think my system knows where make is located. With xcode installed it has to be there. – Rivera 24/5, 2012 at 20:46

.gem, .rvm and .gitconfig could (and probably should) be in your home directory. That's not weird. Can you confirm that xcode is installed by running it? Are you on Lion? See: https://mcmap.net/q/269272/-using-39-make-39-on-os-x – Unthinkable 24/5, 2012 at 21:0

Yeah, that's what I referencing from the link above! Glad you found it! – Unthinkable 26/5, 2012 at 4:40

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Ubuntu

sudo apt-get install ruby-dev
gem install jekyll

Vanden answered 28/7, 2012 at 9:8 Comment(8)

but it does solve my problem in Ubuntu, since the question title doesn't mention the os – Calorie 18/1, 2013 at 15:40

OP did not mention it explicitly but the error message with the /System/Library/Frameworks was pretty revealing. Worked for me none the less on Ubuntu 13.10 – Venturous 18/3, 2014 at 12:25

This solution works on Raspberry Pi, just need add sudo for the second command: sudo gem install jekyll – Vines 14/5, 2014 at 10:56

Thank you! I had to sudo apt-get remove ruby as I had Ruby 1.9.3, and it wouldn't let me sudo gem install jekyll. – Dabster 14/7, 2014 at 5:12

but no one says anything about Windows :( – Annulment 25/4, 2015 at 19:14

Installing ruby dev fixed the issue. PS: For fedora: # dnf install ruby ruby-dev – Backstage 5/1, 2016 at 0:56

Same in my case, version supplied didn't match, but tried ruby-dev then worked, as usual when you miss some packages that requires compiling. – Depressor 4/5, 2016 at 9:47

I needed sudo on both commands. Other than that: GREAT. (Unbuntu MATE 14.04) – Supergalaxy 15/1, 2017 at 15:6