I want to install rjb on Linux (ubuntu) and I get this message:
$ sudo JAVA_HOME=/usr/lib/jvm/java-6-openjdk gem install rjb
Building native extensions. This could take a while…
ERROR: Error installing rjb:
ERROR: Failed to build gem native extension.
*** 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:
extconf.rb:45:in `open’: No such file or directory -
Gem files will remain installed in /var/lib/gems/1.8/gems/rjb-1.3.4 for
Results logged to /var/lib/gems/1.8/gems/rjb-1.3.4/ext/gem_make.out
Can anyone help me?