I'm new with ruby and I'm facing a problem with installing some gems required by a ruby project I'm trying to build
I have installed rvm and I try to run the following command to fetch, if I understand well the missing dependencies of my project
$> jruby --1.9 /home/user/.gem/jruby/1.9/bin/bundle install
And I fall into the following exception:
Fetching additional metadata from https://rubygems.org/..
Resolving dependencies...
Installing rake 0.9.6
Installing addressable 2.3.6
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
/usr/local/rvm/rubies/jruby-1.7.12-dev/bin/jruby extconf.rb
/usr/local/rvm/rubies/jruby-1.7.12/lib/ruby/shared/mkmf.rb:14: Use RbConfig instead of obsolete and deprecated Config.
mkmf.rb can't find header files for ruby at /usr/local/rvm/rubies/jruby-1.7.12/lib/native/include/ruby/ruby.h
extconf failed, uncaught signal 1
Gem files will remain installed in /usr/local/rvm/gems/jruby-1.7.12/gems/cool.io-1.2.4 for inspection.
Results logged to /usr/local/rvm/gems/jruby-1.7.12/extensions/universal-java-1.7/1.9/cool.io-1.2.4/gem_make.out
My version is
$> ruby -v
jruby 1.7.12 (1.9.3p392) 2014-04-15 643e292 on Java HotSpot(TM) 64-Bit Server VM 1.7.0_60-b19 [linux-amd64]
I've seen on similar posts that a dev package is missing but how do I install it via rvm?
JRuby's native extension support was an experiment and is not recommended to be used.
All of your gems that use MRI's native extension API might just no longer work on JRuby, usually mature gems provide a JRuby specific alternative but that is not always the case.
cool.io gem seems to be one of those (will only work on MRI as it needs to build it's native extension)
Related
The command rails server throws this error.
C:/Ruby200/lib/ruby/gems/2.0.0/gems/mysql2-0.3.11-x86-mingw32/lib/mysql2/mysql2.rb:2:in `require': cannot load
such file -- mysql2/2.0/mysql2 (LoadError)
I use Ruby 2.0.0 from RubyInstaller on Windows XP box.
I figured out what is the problem but I don't know how to solve it. The problem is that there is no any 2.0/ directory in the mysql2-0.3.11-x86-mingw32 gem. This is the gem that rails installs as its dependency from Gemfile:
GEM
remote: https://rubygems.org/
specs:
... many gems here
mysql2 (0.3.11-x86-mingw32)
... many gems here
DEPENDENCIES
...
mysql2
...
This is what is in that mysql2.rb file:
# C:\Ruby200\lib\ruby\gems\2.0.0\gems\mysql2-0.3.11-x86-mingw32\lib\mysql2\mysql2.rb
RUBY_VERSION =~ /(\d+.\d+)/
require "mysql2/#{$1}/mysql2" # <<-- this is that #2 line that throws an error
It is obvious that it takes the current Ruby version number and uses it as the path segment to reach some mysql2 file. In fact it is mysql2.so file. As I use Ruby 2.0.0 the path segment is 2.0:
mysql2/2.0/mysql2
Ok, now lets see how that directory of mysql2-0.3.11-x86-mingw32 gem looks like:
dir: C:\Ruby200\lib\ruby\gems\2.0.0\gems\mysql2-0.3.11-x86-mingw32\lib\mysql2\
No any 2.0/ directory.
I know the issue about libmysql.dll. I have it in my C:\Ruby200\bin. It doesn't help.
I read this answer https://stackoverflow.com/a/5368767/1114926 from the creator of RubyInstaller. I tried but it didn't help. It works for Ruby 1.9.3 because there is 1.9/ directory. But it doesn't work for Ruby 2.0.0.
How to solve it?
UPD 1:
Thank you for your answer. I've tried. Unfortunately I have ERROR: Failed to build gem native extension. error:
C:\>gem install mysql2 --platform=ruby
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
C:/Ruby200/bin/ruby.exe extconf.rb
checking for rb_thread_blocking_region()... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.
Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=C:/Ruby200/bin/ruby
C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:431:in `try_do': The compiler failed to generate an executable file. (Runtim
eError)
You have to install development tools first.
... other code follows here...
It says:
You have to install development tools first.
But I have full DevKit installed, RubyInstaller installs it. Can't understand what else does it need.
I've already posted an issue to mysql2 GitHub page https://github.com/brianmario/mysql2/issues/364. No answers yet.
Had the absolutely same issue on Windows 7 x64 with Ruby 2.0.0 and DevKit 4.7.
The following steps helped me.
gem uninstall mysql2
Download last MySQL connector from http://cdn.mysql.com/Downloads/Connector-C/mysql-connector-c-noinstall-6.0.2-win32.zip
Extract it to C:\connector-6.0.2
gem install mysql2 --platform=ruby -- '--with-mysql-lib="C:\connector-6.0.2\lib" --with-mysql-include="C:\connector-6.0.2\include" --with-mysql-dir="C:\connector-6.0.2"'
Or even shorter:
gem install mysql2 --platform=ruby -- --with-opt-dir="C:\connector-6.0.2"
uninstall mysql2-0.3.11-x86-mingw32, gems compiled before Ruby200 won't work. You have to compile it yourself.
If you run gem uninstall mysql2 and there is a non compiled version listed then just uninstall mysql2-0.3.11-x86-mingw32 - the compiled version else...
Installation
gem install mysql2 --platform=ruby. that would work.
Follow this guide on installing devkit http://rubyonwindowsguides.github.com/book/ch02-04.html.
Then try again.
Exactly the same behavior when I try to install Redmine on windows XP
when I try to do the "rake generate_secret_token", I got "cannot load
such file -- mysql2/2.0/mysql2 (LoadError)"
and when I try to re build mysql2 using --platform=ruby, I got the
same message as you green.
for the moment, I am stucked there ... but if anybody has anything to allow me to move forward, it will be very welcome.
I will keep informed as well
antoine
I almost done the same what #odiszapc described. Uninstall old gem, download mysql-connector-c-noinstall, unzip, but finally I used this command to build native gem:
gem install mysql2 --platform=ruby -- --with-opt-dir=/c/connector-6.0.2
(If you use git-bash then you can use unix style directory syntax.)
Copy paste from that link: https://github.com/brianmario/mysql2/issues/359. It worked for me.
If after installing the gem, you get an error:
"The specified module could not be found.
C:/Devel/Ruby200/lib/ruby/gems/2.0.0/gems/mysql2-0.3.11/lib/mysql2/mysql2.so"
That can be fixed by copying libmysql.dll to Ruby's bin folder.
I have installed google api client with the following code and it installed successfuly.
gem install google-api-client
I am using rails 3.0.3 so i also included the above line bundler and ran bundle install which went successfully.
I have also rvm installed. And created a gemset.
And when I run the following command in the terminal:
gem environment | grep INSTALLATION | awk '{print $4}'
It gives me the following result
/home/jamal/.rvm/gems/ruby-1.9.3-p194
When i try to execute the following code in scintilla outside the project directory. It gives me an error.
require 'rubygems'
require 'google/api_client'
ERROR:
usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no such file to load -- google/api_client (LoadError)
from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
What is the main reason of this kind of error?
Possible chances are your editor does not loading the specific gemset in which you install the gem.
Please provide output of gem list google-api-client -d in your questions. So that I can figure it out exactly what is going one.
EDIT:
Another issue which usually occurs are the dual installation of ruby. When we do have a system level installation and a rvm installation, many editor got confused in it. They load up original system installed ruby which do have prefixes like 1.8.7, 1.9.1and available in /usr/share/bin/. Where was you had installed the gem in rvm profile. To overcome this problem you must run your code from terminal after choosing the right gemset
I had that google/api_client (LoadError) message but, it concerned another Google gem.
gem 'google_drive', '~> 0.3.10'
gem 'google-api-client'
I just removed the , '~> 0.3.10' part in case of it was a compatibility problem. That did the trick:
Using google-api-client 0.7.1 (was 0.9.4)
Installing google_drive 1.0.6 (was 0.3.11)
I've been trying to work out how to install lesscss.org on Windows 7 so I can use it from a cygwin command line interface and also using Maven.
We have SASS running in this way but there is a requirement to use LESS in a new project.
My Steps so far...
Checked Ruby is installed, I have it installed at C:\Ruby193
Downloaded the Ruby DevKit and followed this to install it.
At CMD.exe, execute gem install less - 1 gem installed ... less-2.2.1
CMD.exe, run lessc - This gives [WARNING] Please install gem 'therubyracer' to use Less.
So at CMD.exe I try gem install therubyracer which gives this error...
ERROR:
Error installing therubyracer: ERROR: Failed to build gem native extension.
Full error is here
6. And this is where I'm stuck because lessc is still complaining therubyracer is not installed. I've also installed Python27 and added it to the Path variable as that came up in a previous error.
I can confirm I have this path C:\Ruby193\lib\ruby\gems\1.9.1\gems\therubyracer-0.10.1 which looks like a project to me but something is obviously wrong.
I've also found this as a potential answer to getting LESS on Windows but that would indicate we can't get the native 'real' version to run so both Macs, Windows and Ubuntu can use the same switches/ environment? github.com/duncansmart/less.js-windows
As the others mentioned, this is now easily done with node:
npm install -g less
This will install less as a global module that you can use from anywhere on the command line by typing:
lessc input-file.less output-file.css
An even easer way to do this is to just use a tool like SimpleLess that will automagically compile and minify your LESS for you:
http://wearekiss.com/simpless
Happy Coding!
Perhaps you had the same problem I did where you successfully installed the node module via:
npm install -g less
but when trying to run lessc, you were getting the error:
[WARNING] Please install gem 'therubyracer' to use Less.
I think this is because, though you've installed the node module, the lessc command is still tied to the ruby gem. Try uninstalling the less gem:
gem uninstall less
And then try running lessc again.
I'm using Ubuntu 11.10 and the terminal to install and run Rails. Here
is the process I've taken so far to setup Rails:
download and install Ruby 1.9.2 and Rails 3.1.0
-- I did this using sudo apt-get ruby1.9.1 and sudo gem install
rails
I made a new rails app using rails new path/to/app
I went to the new app directory and tried running rails server and got an
error about not having a JS ruby environment
I had to get a JS runtime environment for execjs so I downloaded 'therubyracer'
as well as 'therubyrhino' and added them to my gem file, one at a time like this:
gem
'therubyracer' then ran bundle install
After everything was successful with the install, I ran rails server again
-- with both runtime environments I have had similar errors:
Could not find libv8-3.3.10.4 in any of the sources
Run `bundle install` to install missing gems.
Could not find therubyrhino-1.73.0 in any of the sources
Run `bundle install` to install missing gems.
Bundle knows where these programs live, giving correct pathnames when I
enter bundle show libv8 or bundle show therubyrhino. They are both
in /usr/lib/ruby/gems/1.9.1/gems/_ where all the other gems are
located for the bundle install.
Does anyone know where this exception is coming up in the Rails source
code? Does anyone know how Rails is gathering the gems? Better yet,
anyone had this problem and know how to fix it?
Thanks so much,
Feav
Have you tried starting the server using bundle exec rails server?
This problem has been fixed in a newer version of Rails.
I installed JRuby and the neo4j gem and trying to use a generator to create a model:
jruby -S rails generate scaffold User name:string born:date --orm=neo4j
However, I get this error:
error neo4j [not found]
I tried installing neo4j through bundler and just gem install. Either way, which neo4j returns nothing.
I tried this with the the neo4j-rails gem as well but I the neo4j rubyforge page says it is no longer needed. I also tried just generating a model rather than a scaffold.
Is this error specific to just generators or does it mean that my neo4j installation didn't work?
Your installation did not work.
The problem is that you have probably installed version 0.4.6 which is not specific to the JRuby platform but also installs (incorrectly) on MRI. So the error 'neo4j [not found]' is because you are using JRuby and installed the neo4j.rb gem in MRI. Neo4j.rb version >= 1.0.0 can only be installed on JRuby.
I recommend using RVM:
rvm install jruby
rvm use jruby
gem install bundler
bundle install