jRuby, gems with C extensions

Question

Does anyone has the same error with jRuby? When I trying to install gem with C extension I have the next error:

gem install serialport Building native extensions. This could take a while... ERROR: Error installing serialport: ERROR: Failed to build gem native extension.
    /home/username/.rvm/rubies/jruby-head/bin/jruby extconf.rb NotImplementedError: C > extension support is not enabled. Pass -Xcext.enabled=true to JRuby or set JRUBY_OPTS or modify .jrubyrc to enable.
(root) at /home/username/.rvm/rubies/jruby-head/lib/ruby/shared/mkmf.rb:8
require at org/jruby/RubyKernel.java:1021 (root) at /home/username/.rvm/rubies/jruby-head/lib/ruby/shared/rubygems/custom_require.rb:1 (root) at extconf.rb:1

Any arguments declared in errors explanation does not give any success...

Info about installed jruby version: jruby 1.7.0.preview2.dev (1.9.3p203) 2012-08-05 22cd6f9 on Java HotSpot(TM) Server VM 1.7.0_05-b05 [linux-i386]

Platform: Linux

Gem: serialport

It says: "Pass -Xcext.enabled=true to JRuby or set JRUBY_OPTS or modify .jrubyrc to enable". Did you do that? — Sergio Tulentsev, Aug 05 '12 at 15:26
C extension support for JRuby is buggy and deprecated. You aren't likely to get what you want with C extensions. The best option would be to find a Java library that does what you want. — echristopherson, Aug 06 '12 at 00:31

score 1 · Answer 1 · answered Jul 11 '13 at 11:04

As echristopherson as put it C extension support for JRuby is deprecated. In most gems you should find the Java specific version in RubyGems or a healthy alternative lyiing around in Github. I do not recommend you to try an hack the gem to work with jruby as it will be a world of pain...

score 0 · Answer 2 · answered Apr 07 '14 at 07:34

0

Have you tried the rs232 gem? It may have jruby support, as the ffi gem it depends on has jruby support. https://rubygems.org/gems/rs232

answered Apr 07 '14 at 07:34

kristianp

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jRuby, gems with C extensions

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