[Swift-devel] Swift shell script and JAVA_HOME

[David Kelly]

Hello,

I noticed on login.ci.uchicago.edu that I was not able to launch swift. Even
though I had "+java-sun" in ~/.soft, the system was pointing me to gcj.
Normally in ubuntu, something like "update-java-alternatives -s java-6-sun"
lets you switch JVMs, but as far I know it makes changes system wide
(requiring root access) and not on a per-user basis. Then I set $JAVA_HOME
to the correct path and it still wouldn't launch. Should the swift shell
script test for $JAVA_HOME to determine the correct location? Maybe
something like this would work:

### EXECUTE ############
if test -n "$CYGWIN"; then
    set CLASSPATHSAVE=$CLASSPATH
    export CLASSPATH="$LOCALCLASSPATH"
    eval java ${OPTIONS} ${COG_OPTS} ${EXEC} ${CMDLINE}
    export CLASSPATH=$CLASSPATHSAVE
else
    if [ -n "$JAVA_HOME" ]; then
        eval $JAVA_HOME/bin/java ${OPTIONS} ${COG_OPTS} -classpath
${LOCALCLASSPATH} ${EXEC} ${CMDLINE}
    else
        eval java ${OPTIONS} ${COG_OPTS} -classpath ${LOCALCLASSPATH}
${EXEC} ${CMDLINE}
    fi
fi
return_code=$?

exit $return_code
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