JRuby on HPUX 11.23

From JRubyWiki

This document describes a workaround to get JRUBY working on HPUX as untaring jruby-bin-1.0.tar yields 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/RdocForma
 tter/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, features are working with this workaround, atleast my scripts seems to work):

• tar xvf jruby-bin-1.0.tar (ignore the @LongLink errors)
• 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

• Modified $JRUBY_HOME/bin/jruby bash file to the following: (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 $JRUBY_OPTS "$@"

• Setup 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:.

• Test JRUBY

  jruby -e '  puts "jruby is working"   '

Alternative approach

Before going through all of the work above, you may want to try downloading and building GNU tar. I used GNU tar to unpack the JRuby tar and everything worked great. No errors.