RFR(S): JDK-8026964 Building with an IBM J9 boot jdk requires special settings for BOOT_RTJAR

[Magnus Ihse Bursie]

On 2013-11-15 18:51, Kumar Srinivasan wrote:
>
> Hi Volker,
>
> One thing I notieced,
>
> BOOT_RTJAR=`$BOOT_JDK/bin/java -XshowSettings 2>&1 .......
>
> I suggest using java -XshowSettings:props -version 2>&1 .........
>
> props,  will narrow down the reporting to only properties section, 
> which is
> really what you want
>
> -version, will allow the launcher to return a 0 exit value, since 
> -XshowSettings
> behaves like -showversion ie. another class or option is expected for 
> the launcher
> to continue.

Kumar,

While these sounds like good suggestions, when I tested them locally, it 
does not seem to work. -XshowSettings:props behaves no different from 
-XshowSettings.

What's worse, when I tested with an older version of java with -version 
added, the effect of -XshowSettings disappeared! If this method is not 
robust for all JDKs that can be used as boot jdk, we should be careful 
about using it.

/Magnus