How to enable C extension support in jRuby?
12,841
Solution 1
.jrubyrc edits suggested by Rodrigo didn't work for me (jdk 7u25 / JRuby 1.7.4), but exporting the JRUBY_OPTS did do the trick:
export JRUBY_OPTS="--1.9 -Xcext.enabled=true"
Solution 2
Make sure you are using the latest openjdk (7 update 21, at the time of this writing) and latest JRuby (1.7.4).
Create a file called .jrubyrc in your user home folder.
add the following;
cext.enabled=true
done
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Author by
ada91
Updated on July 28, 2022Comments
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ada91 over 1 year
I want to install a gem but I get the following error:
Building native extensions. This could take a while... ERROR: Error installing twitter-login: ERROR: Failed to build gem native extension. C:/nwcloud/jruby-1.7.2/bin/jruby.exe extconf.rb NotImplementedError: C extension support is not enabled. Pass -Xcext.enabled=true to JRuby or set JRUBY_OPTS or modify .jrubyrc to enable.
I also read this question with the same problem, but I don't even know how to enable the support with the three options because I don't know how to pass
-Xcext.enabled=true
to JRuby or set JRUBY_OPTS or modify .jrubyrc to enable.Can anybody help me with my beginner problem?
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fmendez over 10 yearsIt was intended for you to read between the lines of all the solutions offered there. For instances, this example:
export JRUBY_OPTS="--1.9 -J-XX:+CMSClassUnloadingEnabled -J-XX:+UseConcMarkSweepGC -J-XX:MaxPermSize=256m -J-Xmx1024m"
, tells you that JRUBY_OPTS is aenvironment
variable and one way to set its content is like that. Not all solutions come in a handy copy/paste format. -
Seanny123 about 10 yearsIt should be note that C extension support is looking at being eliminated in future versions of JRuby github.com/jruby/jruby/wiki/C-Extension-Alternatives
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Daniel Antonio Nuñez Carhuayo over 9 yearsin windows work fine too with: set JRUBY_OPTS="--1.9 -Xcext.enabled=true"
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Pravin almost 7 yearscan we make it project specific setup rather than machine specific setup?