JRubyOnHPUX11_23

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Using JRuby on HPUX

This document describes a workaround to get JRUBY working on HPUX, since untarring jruby-bin-1.0.tar causes the following error, in addition to missing jar files in $JRUBY_HOME/lib.

  x jruby-1.0/lib/ruby/gems/1.8/doc/rspec-1.0.5/ri/Spec/Runner/Formatter/RdocFormatter/
  example_passed-i., 216 bytes, 1 tape blocks
  tar: ././@LongLink creating as regular file.
  x ././@LongLink, 125 bytes, 1 tape blocks
  directory checksum error 

Workaround

This document was authored by a newbie. There might be better ways to make JRuby work on HPUX. (Don't know how to test or check if all JRuby functions and features are working with this workaround. At least my scripts seem to work.)

Note: Before going through all the work below, you might want to try downloading and building GNU tar. I used GNU tar to unpack the JRuby tar and everything worked great. No errors. If you don't want to go through building GNU tar, then here's the workaround:

1. tar xvf jruby-bin-1.0.tar (ignore the @LongLink errors)
2. Copy the following jars to JRUBY_HOME/lib directory. (I had a copy of these jar files on a Linux box, where the untar worked successfully.)

  asm-2.2.3.jar
  asm-commons-2.2.3.jar
  backport-util-concurrent.jar
  bsf.jar
  emma.jar
  emma_ant.jar
  jarjar-0.7.jar
  jline-0.9.91.jar
  jruby.jar
  junit.jar

3. Modify $JRUBY_HOME/bin/jruby bash file as follows. (I had to do this as I don't have bash on my HP box and don't know how to convert a bash script into ksh or some other shell script.)

  JRUBY_HOME="<<jruby_home>>" #Substitute your jruby_home
  JRUBY_OPTS=""
  JAVA_CMD='java'
  JRUBY_SHELL=/bin/sh
  CP="$JRUBY_HOME/lib/asm-2.2.3.jar:              \
  $JRUBY_HOME/lib/asm-commons-2.2.3.jar:          \
  $JRUBY_HOME/lib/backport-util-concurrent.jar:   \
  $JRUBY_HOME/lib/bsf.jar:                        \
  $JRUBY_HOME/lib/emma.jar:                       \
  $JRUBY_HOME/lib/emma_ant.jar:                   \
  $JRUBY_HOME/lib/jarjar-0.7.jar:                 \
  $JRUBY_HOME/lib/jline-0.9.91.jar:               \
  $JRUBY_HOME/lib/jruby.jar:                      \
  $JRUBY_HOME/lib/junit.jar"
  JRUBY_BASE="$JRUBY_HOME"
  JAVA_MEM=-Xmx256m
  JAVA_STACK=-Xss1024k
  JAVA_OPTS="$JAVA_MEM $JAVA_STACK -Xverify:none -da"
  exec "$JAVA_CMD" $JAVA_OPTS -classpath "$CP"    \
    "-Djruby.base=$JRUBY_BASE" "-Djruby.home=$JRUBY_HOME" \
    "-Djruby.lib=$JRUBY_BASE/lib" -Djruby.script=jruby    \
    "-Djruby.shell=$JRUBY_SHELL"                          \
    org.jruby.Main $JRUBY_OPTS "$@"

4. Set up your environment variables.

   export JAVA_HOME="<<java_home>>" #Substitute your java_home
   export JRUBY_HOME="<<jruby_home>>" #Substitute your jruby_home
   export PATH=$PATH:$JRUBY_HOME/bin:$JAVA_HOME/bin:.

5. Test JRUBY

   jruby -e '  puts "jruby is working"   '