How to enable C extensions error in Jruby? - jruby

Question

I am getting the following error and dont know how to solve this. Can someone simplify this process?
My Jruby is installed in
C:/jruby-1.7.13/bin
my project is in
C:/Users/myname/downloads/projectdirectory
The error is when I do
bundle install
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
c:/jruby-1.7.13/bin/jruby.exe extconf.rb
NotImplementedError: C extension support is not enabled. Pass -Xcext.enabled=true to JRuby or set JRUBY_OPTS.
(root) at c:/jruby-1.7.13/lib/ruby/shared/mkmf.rb:8
require at org/jruby/RubyKernel.java:1065
(root) at c:/jruby-1.7.13/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:1
(root) at extconf.rb:2
Gem files will remain installed in c:/jruby-1.7.13/lib/ruby/gems/shared/gems/pg-0.17.0 for inspection.
Results logged to c:/jruby-1.7.13/lib/ruby/gems/shared/gems/pg-0.17.0/ext/gem_make.out
An error occurred while installing pg (0.17.0), and Bundler cannot continue.
Make sure that `gem install pg -v '0.17.0'` succeeds before bundling.

Answer 1

C- extensions are not really supported in JRuby and were actually dropped in the 1.7.x line ...
thus despite the message mentioning -Xcext.enabled=true won't help you!
since it's pg you're trying, there's a jruby alternative that uses a Java API instead of C pg_jruby, alternatively if you're using active-record look for activerecord-jdbc-adapter + jdbc-postgres