I already installed Ruby 1.9.2 with Rubygems successfully on my main machine.
Now on my server I'm again in this job.
Last time I had a problem, which came up right now as well:
gem install rails
ERROR: Loading command: install (LoadError)
no such file to load -- zlib
ERROR: While executing gem ... (NameError)
uninitialized constant Gem::Commands::InstallCommand
I knew how to fix this, but forgot it.
I found an article here on stackoverflow (which I cannot find again) that tells me to compile some native ruby extension first. In the source code you have to go into a dir, where you find dirs for zlib, linecache and so on. Those you have to compile and you're done: everything then works.
Can somebody tell me again how to do this?
Sorry, Google and the Stackoverflow search didn't help this time.
Thanks.
Yours,
Joern
use RVM to install a ruby - its really incredible stuff
you didnt used flags on the ruby compilation (--with-zlib-dir=/...zlib_path...)
I found the thread again!
Has anyone tried installing ruby & rubygems from source on ubuntu
In the 3rd answer of Evgeny you find exactly what I was searching for!
Related
Getting this error when trying to install chef on OS X Yosemite, other gems have installed fine. Not seeing a requirement. Just wondering if anyone has and idea of what the issue is or has come across this.
$sudo gem install chef
Building native extensions. This could take a while...
ERROR: Error installing chef:
ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby -r ./siteconf20141023-4708-6api21.rb extconf.rb
creating Makefile
/Library/Ruby/Gems/2.0.0/gems/libyajl2-1.1.0/ext/libyajl2
extconf.rb:104:in `makemakefiles': unhandled exception
from extconf.rb:138:in `<main>'
extconf failed, exit code 1
EDIT: Although my answer below will help you install it on the system version of Ruby. I would probably suggest using RVM instead as the comment below mentions. I do not use Ruby very often and it would probably be fine, but I decided to take the 10 mins to change it to installing to RVM since that way I leave the system ruby untouched.
As I was searching across the web, I could actually resolve this issue (which also appeared on docker/ubuntu) as suggested in this thread:
https://stackoverflow.com/a/32191707/1948319
Long story short: The gmp library is missing. You can install it on ubuntu with
sudo apt-get install libgmp3-dev
I had this problem with this gem specifically, and another gem with c extensions as well.
Turns out I needed to accept new terms & conditions after updating XCode :-)
sudo xcodebuild -license
So I actually answered my own question very shortly after I posted and I hope it helps someone else in the future.
I used this instead:
$ sudo ARCHFLAGS=-Wno-error=unused-command-line-argument-hard-error-in-future gem install chef
The Apple LLVM compiler in Xcode treats unrecognized command-line options as errors. This issue has been seen when building both Python native extensions and Ruby Gems, where some invalid compiler options are currently specified.
Came across this issue which was similar enough:
https://github.com/FontCustom/fontcustom/issues/194
After a couple of days of not doing pretty much anything on the ubuntu box, I decided to try out some ruby stuff. For this, I wanted to fire up pry. Unfortunately, I was presented with
Sorry, you can't use Pry without Readline or a compatible library.
Please gem install rb-readline or recompile Ruby --with-readline.
~/.rbenv/versions/2.1.1/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in
`require': libreadline.so.5: cannot open shared object file: No such
file or directory -
~/.rbenv/versions/2.1.1/lib/ruby/2.1.0/x86_64-linux/readline.so
(LoadError)
Being quite new to linux in general, I figured I'd just do as it said, and install this rb-readline. The installation passes just fine, but doesnt seem to do anything at all. If I do gem list p, the package just doesn't appear.
So yeah, I just don't know what to do to get it working again, and the only thing I managed to find by searching was related to an installation without rbenv and had something to do with sudo etc.
Any ideas?
Without understanding the problem and following the advice in option 2 of the message:
Sorry, you can't use Pry without Readline or a compatible library.
Possible solutions:
* Rebuild Ruby with Readline support using `--with-readline`
* Use the rb-readline gem, which is a pure-Ruby port of Readline <==== Option 2
* Use the pry-coolline gem, a pure-ruby alternative to Readline
I added the gem into the Gemfile (as follows), bundled and pry was then available.
group :development, :test do
gem 'pry'
gem 'rb-readline'
end
I had this problem too. I am using rbenv and reinstalling ruby via
rbenv install -f 2.2.3
did fixed it for me. Of course you'd put in your respective version. -f forces the installation even though you already have that specific version installed. use rbenv global to find out what version you have installed and set.
I have some problem. But I don't want to add gem 'rb-readline'. So try it...
$ln -s /usr/local/opt/readline/lib/libreadline.8.0.dylib /usr/local/opt/readline/lib/libreadline.7.dylib
Do a sudo apt-get install libreadline-dev, seems like you're missing the readline shared library that pry is wanting. If it worked before, not sure why the library isn't there anymore.
I ended up doing rbenv uninstall, followed by rbenv install and re-installing all the gems, and got it back to working. Still no idea what caused it in the first place, but it works now.
I'm trying to install the mysql2 gem on Windows 8 (Ruby 1.9.3 and Rails 4.0.1). I've installed the Devkit and it's working properly, and I'm entering the following:
gem install mysql2 --platform=ruby -- '--with-mysql-lib="C:\mysql-connector\lib" --with-mysql-include="C:\mysql-connector\include" --with-mysql-dir="C:\mysql-conector"'
I've done this before and it's worked, but for some reason this time it's throwing this bizarre message:
Cannot find include dir at C:\mysql-connector\include;C:\mysql-connector\include;C:\mysql-connector/include;
This is of course in addition to the whole "Could not create makefile for some reason..." message. I'm using the mysql connector that I found through a different post here--Ruby MYSQL2 gem installation on windows 7
Does anyone know how I can fix this? I really need this gem...
I figured this out...
All I had to do was:
gem install mysql2 --platform=ruby -- '--with-mysql-dir="C:\mysql-connector\"'
Strange though--last time it worked with the code above... Go figure...
I just ran into the exact same issue trying to install mysql2 0.3.14 on Window 64bit, Rails 3.2.15 and Ruby 2.0.0p247. I used a command very simliar to what user2986379 posted and it worked; literally 5 minutes later when I had to rerun the command to fix another issue it stopped working. I was even copying the command from notepad each time so there wasn't a typo. Odd.
Anyway, user2986379's solution of adding quotes to the paths helped me get past the issue, but I was still getting some errors. I ended up modifying the command by removing the single quotes. In case anyone needs it, here's the command I ran:
gem install mysql2 --platform=ruby -- --with-mysql-dir="C:\mysql-connector"
Lastly, just for completeness, I had to use the version of connector c located here. You can read more about why this is necessary at the bottom of https://github.com/brianmario/mysql2/issues/372. It will install fine, but without the special connector_c you might get a segmentation fault when you go to actually use the gem. (Don't forget to grab the libmysql.dll out of that special connector c zip file as well and place it in your ruby bin directory.)
i originally followed these steps to get a RoR environmentgoing: https://help.ubuntu.com/community/RubyOnRails
that worked. then i put 1.9.2 on here. then i decided i want the original setup, did a "whereis ruby" and deleted those directories manually.
that fubar'd my ruby installation. i can't use the repository to what i originally had. how can i purge ruby from completely and start fresh?
right now the specific error is this:
/usr/lib/ruby/1.8/rubygems.rb:11:in `require': no such file to load -- thread (LoadError)
from /usr/lib/ruby/1.8/rubygems.rb:11
from /usr/bin/gem1.8:8:in `require'
from /usr/bin/gem1.8:8
tipu#tipu_ubuntu:~$
You're not giving enough real information to be specific, but this is what I'd try:
Use apt-search to locate Ruby 1.8.7 for your OS version.
Using apt-get, uninstall that version so you're back to what APT thinks is a clean slate.
Again using apt-get, reinstall that version so you're back to what APT thinks is a normal installation.
From that point, I would STOP messing with the system Ruby, and instead use RVM to manage and install any new Ruby and gems installations into RVM's ~/.rvm sandbox.
To follow up on the Tin Man's answer:
I wrote a guide to installing Ruby and Rails on Ubuntu which you may find useful for getting this all peachy again.
Hope it helps!
You need to reinstall libruby1.8. I'm pretty sure that will take care of it. I had exactly the same problem.
I installed ruby186-27_rc2 and i am getting the same error as described in the Ruby: Cannot Install Watir Gem On Windows thread when i try to install watir using gem install watir. Please see the error below.
C:\DevKit>gem install watir
Building native extensions. This could take a while...
ERROR: Error installing watir:
ERROR: Failed to build gem native extension.
C:/Ruby/bin/ruby.exe extconf.rb
checking for strncpy_s()... no
creating Makefile.....
And then tried to install the devkit as suggested in the thread mentioned above. During the devkit installation i came up with a problem.
In step4 of devkit installation as described at Development Kit wiki i have added the path C:\Ruby to the config file and then ran the command ruby dk.rb install and i got the following error. Please help! Waiting for your inputs. Thanks!
C:/Ruby/lib/ruby/1.8/yaml.rb:133:in `load': syntax error on line 15, col -1: `'
(ArgumentError)
from C:/Ruby/lib/ruby/1.8/yaml.rb:133:in `load'
from dk.rb:151:in `review'
from dk.rb:143:in `open'
from dk.rb:143:in `review'
from dk.rb:248:in `send'
from dk.rb:248:in `run'
from dk.rb:262
The DevKit contains a development environment for the MinGW port of MRI and YARV. You are using the MSVC6 port of MRI, so you need to install a development environment for MSVC6.
Unfortunately, there is no ready-made DevKit-like package for that. You will have to install it on your own. Note that it's not actually that hard to install, the biggest problem is to get a hold of a copy of Microsoft Visual C 6.0, since that hasn't been on sale for about 10 years now. You'll basically have to find someone who is going to sell you a used copy.
May I ask why you need to use a port of Ruby that hasn't been maintained in over 2 years, contains a version of Ruby that is so old that it cannot even run most modern code (e.g. Rails requires at least 1.8.7 or 1.9.2) and has several bugs, including security holes? Why don't you just use the MinGW port which is actually maintained?
This is all independent of the actual problem, of course, which is that you have a syntax error in your config.yml: you missed a dash and a space on line 15, which should read
- C:/Ruby
as indicated in the example section directly above it.