unable to install "eventmachine" both from gem and build

[suryart]

I am trying to install eventmachine by command: gem install eventmachine and it is giving me this error at the end:

make: shared: Command not found
make: [rubyeventmachine.so] Error 127 (ignored)
/usr/bin/install -c -m 0755 rubyeventmachine.so /usr/local/lib/ruby/gems/1.8/gems/eventmachine-0.12.10/lib
/usr/bin/install: cannot stat `rubyeventmachine.so': No such file or directory
make: *** [/usr/local/lib/ruby/gems/1.8/gems/eventmachine-0.12.10/lib/rubyeventmachine.so] Error 1

you may review whole log here: http://pastie.org/private/ebiehjoa23klhec6hurmg

And when I tried to grab and build like this:

git clone git://github.com/eventmachine/eventmachine.git
cd eventmachine
rake build

at rake build it is prompting following error:

surya@surya-desktop:~/Desktop/Surya/Projects/eventmachine$ rake build
(in /home/surya/Desktop/Surya/Projects/eventmachine)
rake aborted!
Don't know how to build task 'build'

(See full trace by running task with --trace)
surya@surya-desktop:~/Desktop/Surya/Projects/eventmachine$

Can you kindly suggest me any possible way to solve this issue?

Thanks
Surya

[michaelklishin]

After cloning, do

gem install rake-compiler

and then

rake gem

to build a gem. Now on to installation:

rake gem:install

will also install it but it uses sudo. If you are running RVM, for example, and not really installing gems system-wide, install it via

gem install pkg/eventmachine-1.0.0.beta.3.gem

Your pastie suggests that gem failed to build it's C++ extension. Can you post contents of /usr/local/lib/ruby/gems/1.8/gems/eventmachine-0.12.10/ext/gem_make.out up?

[suryart]

After cloning I get up to rake gem but when I hit rake gem:install it came up with the same issue, you may check whole log here : http://pastie.org/private/exlwqogpwaxukb1bvp51q

And /usr/local/lib/ruby/gems/1.8/gems/eventmachine-0.12.10/ext/gem_make.out file content here : http://pastie.org/private/q9sa5dovdxdoajxdotctg

[michaelklishin]

Sorry for stupid question but are you sure you have all the build toolchain installed? g++ (part of gcc) and libstdc++6 package? I see a blog post that demonstrates the same issue (even though that is on OS X) and the solution seems to be editing extconf.rb to force g++ usage.

Try what is in that post but I suspect that something from the C++ build toolchain is missing from your system.

[suryart]

It's not a problem. Well I have already installed mingw32 and libstd++6 and libconfig8-dev before doing all this. Cause if I hadn't done it then rake-compiler cross-ruby VERSION=1.8.7-p330 wouldn't work. Even I'm not getting any idea that what's going wrong here!

[michaelklishin]

I see. try exporting CXX="g++"?

[suryart]

still not working :(

[tmm1]

You are missing make. Install it via xcode.

[tmm1]

Oops, should have looked closer. You're not even on OSX.

Something is screwy with your build chain or ruby installation. What is your ruby -v? Try an rvm ruby instead.

[suryart]

Well sorry, I must have told you this part of the story too. my ruby -v show ruby 1.8.8p1 (2011-01-19) [i686-linux] I had compiled cross-ruby using rake-compiler of version 1.8.8p1 by copying /home/surya/.rake-compiler/builds/ruby-1.8.7-p330 all file to /home/surya/.rake-compiler/builds/ruby-1.8.8-p1 directory cause when I used this command rake-compiler cross-ruby VERSION=1.8.8-p1 it says Error 404 : can not find source for ruby-1.8.8-p1, and does not create any build for it but it does create a build for rake-compiler cross-ruby VERSION=1.8.7-p330 so I copied and compiled and it worked !
Config.yml of rake-compiler is now looks like this:

/home/surya/.rake-compiler/config.yml

rbconfig-1.8.7: /home/surya/.rake-compiler/ruby/ruby-1.8.7-p330/lib/ruby/1.8/i386-mingw32/rbconfig.rb
rbconfig-1.8.8: /home/surya/.rake-compiler/ruby/ruby-1.8.8-p1/lib/ruby/1.8/i386-mingw32/rbconfig.rb

I know I should not do something like this. But is there any way to get rid off all from this?

[tmm1]

How did you install 1.8.8p1? Are you having issues with 1.8.7? This could be an issue with rake-compiler in 1.8.8.

@luislavena: any ideas?

[suryart]

I had followed this blog : https://help.ubuntu.com/community/RubyOnRails
and had used this command to install ruby: sudo apt-get install ruby-full build-essential now I'm afraid of installing 1.8.7 or any other version only because of gem dependencies! BTW do I have to install everything from scratch now?

[michaelklishin]

If you reinstall Ruby, yes, gems have to be reinstalled, too. You really should take a look at RVM and what gemsets can do. 1.8.8 release plans were abandoned as far as I know, so 1.8.7 is now a synonym for "Ruby 1.8" for most library maintainers.

[tmm1]

What distribution are you running that includes a 1.8.8?

[luislavena]

@tmm1 1.8.8 is not even released, how on earth it got installed? See here http://ftp.ruby-lang.org/pub/ruby/1.8/ no releases

And Ruby Core decided not to release 1.8.8 at all

Now, rake-compiler will affect rake compile but will not affect gem install, that is RubyGems alone working.

@SuryaTripathi the cross compilation part is only required when cross compiling to Windows, which I think you don't need it, why you did that in the first place?

None of this makes any sense. Which version of Ubuntu are we talking about? 11.04? Sorry, but I can't believe that.

[michaelklishin]

@luislavena I think there is no cross-compilation going on and @SuryaTripathi understands that. What it comes down is some Linux build chain (or environment setup) deficiency that prevents EM reactor from compiling. I personally think it is not even 1.8.8-specific. Sorry that we bothered you ;)

@SuryaTripathi, try this: in EM git repository on your server, run

ruby ext/extconf.rb

which will generate Makefile in the repository root. Now if you run make from the repository root, C++ extension will compile just like it does upon gem installation. At the very least, post that Makefile to pastie or gist.github.com.

[luislavena]

@michaelklishin seems it was as ~/.rake-compiler/* directory and configuration files were mentioned several times.

Anyhow, can @SuryaTripathi try this?

which g++

Seems to me from the make output that g++ executable is not set properly, perhaps CXX environment variable is set to empty which is affecting extconf from generating a valid makefile.

[suryart]

All I used to get stuck is on this command: rake build

@luislavena I did compilation at the first place cause it were asking for the same I got this error before installing rake-cmpiler: no such file to load -- rake/extensiontask, and when I installed rake-compiler it again puzzled me with this: rake-compiler must be configured first to enable cross-compilation
After configuring and compiling of rake-compiler cross-ruby VERSION=1.8.8-p1
by copying files of 1.8.7, as I mentioned above it then come up with this issue: rake/extension compiler.rb:28:in mingw host': No MinGW tools or unknown setup platform? After installing mingw32 and other runtime libraries I again compiled it using above command it did worked, but unfortunately in last when I again used this command:rake build` in eventmachine directory after cloning, it says: Don't know how to build task 'build' for eventmachine

you may see the rake build --trace here: http://pastie.org/private/rbo9phabe1xochspnu5g

I don't know but it is(ruby-1.8.8-p1) on my system and running fine before I wasn't trying to install eventmachine, I had installed it on 2011-01-19(yyyy-mm-dd) . I am using Ubuntu 10.10, the Maverick Meerkat - released in October 2010. This is my gem ENV:
surya@surya-desktop:~/Desktop/Surya/Projects/eventmachine$ gem ENV
RubyGems Environment:

• RUBYGEMS VERSION: 1.5.0
• RUBY VERSION: 1.8.8 (2011-01-19 patchlevel 1) [i686-linux]
• INSTALLATION DIRECTORY: /usr/local/lib/ruby/gems/1.8
• RUBY EXECUTABLE: /usr/local/bin/ruby
• EXECUTABLE DIRECTORY: /usr/local/bin
• RUBYGEMS PLATFORMS:
  • ruby
  • x86-linux
• GEM PATHS:
  • /usr/local/lib/ruby/gems/1.8
  • /home/surya/.gem/ruby/1.8
• GEM CONFIGURATION:
  • :update_sources => true
  • :verbose => true
  • :benchmark => false
  • :backtrace => false
  • :bulk_threshold => 1000
• REMOTE SOURCES:
  • http://rubygems.org/

I don't know what kind of issue I'm facing cause there is no reference out there on internet for this :( If you still don't believe that I have ruby-1.8.8 then you are welcome to share my system and may try out things by yourself!

I think I need to do everything from scratch now, well I'll close this issue if installing from scratch worked, else guys I will let you know the issue came with it.. If you have any suggestion or any idea you think can work then kindly let me know..
Thanks
Surya

[suryart]

@michaelklishin I got the make file here it is: http://pastie.org/private/ukxw63lghqacyiqpnrfnbg
you may also look at the mkmf.log here at: http://pastie.org/private/qj4bi12lpymgudgcafdiyq

@luislavena which g++ came up with this: /usr/bin/g++

[luislavena]

@SuryaTripathi @michaelklishin @tmm1 line 43 of this pastie is the guilty one: http://pastie.org/private/ukxw63lghqacyiqpnrfnbg

For some reason is not being referenced to g++ as pointed by previous comment (which g++)

[suryart]

@luislavena should I try make after adding g++ at line 43?

[luislavena]

@SuryaTripathi please do, it should work, however, that does not explain why is failing in the first place.

[suryart]

@luislavena here is the log of make : http://pastie.org/private/dbov0zjlvrlcb02asv40q
what do I do after this? kindly assist

[luislavena]

@tmm1 see above, it did compile, so the issue is why CXX was added to the Makefile empty.

Leave that to you guys now that I cleared rake-compiler's fame ;-)

[suryart]

@michaelklishin I think there are some issues with rake gem:install cause when I use this command it updates Makefile which does not have g++ in CXX field and thus fails the compilation. What could be the possible reason?

[michaelklishin]

@SuryaTripathi for whatever reason, on your system CXX Makefile variable is blank. If you fire up irb and run

require 'mkmf'

what are values of CONFIG['CC'] and CONFIG['CXX']?

[michaelklishin]

Also, lets see what RbConfig looks like:

require "rbconfig"
puts RbConfig::CONFIG['CXX']
puts RbConfig::CONFIG['CC']
puts RbConfig::CONFIG['LDSHARED']

[suryart]

@michaelklishin Here are the irb results: rbconfig isn't loading, any guess?

surya@surya-desktop:~/Desktop/Surya/Projects/eventmachine$ irb
irb(main):001:0> require 'mkmf'
=> true
irb(main):002:0> puts CONFIG['CC'] 
gcc
=> nil
irb(main):003:0> puts CONFIG['CXX']
nil
=> nil
irb(main):004:0> require "rbconfig"
=> false

[michaelklishin]

No reason to worry: it does load, false returned by Kernel#require means that the file was already loaded (presumably by mkmf under the hood).

From my irb:

ruby-1.9.2-p180 :001 > require 'mkmf'
 => true 
ruby-1.9.2-p180 :002 > require 'rbconfig'
 => false 
ruby-1.9.2-p180 :003 > RbConfig
 => RbConfig 
ruby-1.9.2-p180 :004 > CONFIG['CXX']
 => "g++"

and to prove that mkmf loads rbconfig under the hood:

ruby-1.9.2-p180 :001 > require 'mkmf'
 => true 
ruby-1.9.2-p180 :002 > CONFIG['CXX']
 => "g++"

RbConfig contents is a reflection of what environment looked like when Ruby was compiled. CXX variable wasn't set. I guess you are running a binary package and this is something inherited from whoever built the package.

You can edit extconf.rb and set CONFIG['CXX'] to "g++", then run

ruby extconf.rb

again to regenerate Makefile. Then see if make works.

[suryart]

Great it worked!

I put this:

CONFIG['CXX'] = "g++"

in /eventmachine/ext/extconf.rb and /eventmachine/ext/fastfilereader/extconf.rb files, right below require 'mkmf' line.

then I did: rake gem and then rake gem:install
And it worked perfectly.

@michaelklishin, @tmm1 and @luislavena for your time and great support! This issue is resolved now! Great work :)

[ScarletMcLearn]

Bump