RFR (S): 7143766: add ALT_JDK_IMAGE_DIR and improve test_jdk

[John Rose]

Consider rolling in this debug help so "make gamma" works. 

http://hg.openjdk.java.net/mlvm/mlvm/hotspot/rev/f21b335377b0

-- John  (on my iPhone)

On Feb 8, 2012, at 5:50 AM, Christian Thalinger <christian.thalinger at oracle.com> wrote:

> http://cr.openjdk.java.net/~twisti/7143766/
> 
> 7143766: add ALT_JDK_IMAGE_DIR and improve test_jdk
> Reviewed-by:
> 
> I'd like to add the possibility to specify JDK_IMAGE_DIR via
> ALT_JDK_IMAGE_DIR.  This is very helpful during development since it's
> possible to copy a JDK into a specified directory and export different
> VM builds to the same JDK.  Doing this you don't have to change any
> paths (or command line arguments) but use the same java command, e.g.:
> 
> $ make copy_product_jdk ALT_JDK_IMAGE_DIR=/foo/jdk
> $ make jvmg export_debug ALT_EXPORT_DIR=/foo/jdk
> 
> And after all your bugs are fixed do a product build, export that and
> use the same java command:
> 
> $ make product export_product ALT_EXPORT_DIR=/foo/jdk
> 
> The changes for test_jdk make sure that the right VM is tested.  This
> might not be the case when you are doing 64-bit builds on Solaris,
> export the VM and do a test_jdk:
> 
> $ make test_jdk LP64=1
> INFO: no objcopy cmd found so cannot create .debuginfo files.
> /export/twisti/build/hsx/hotspot-comp/hotspot/build/jdk-solaris/bin/java -server -version
> java version "1.8.0-ea"
> Java(TM) SE Runtime Environment (build 1.8.0-ea-b24)
> Java HotSpot(TM) Server VM (build 23.0-b12, mixed mode)
> 
> What you actually want is to run the just-built 64-bit VM, like:
> 
> $ make test_jdk LP64=1
> INFO: no objcopy cmd found so cannot create .debuginfo files.
> /export/twisti/build/hsx/hotspot-comp/hotspot/build/jdk-solaris/bin/java -d64 -server -Xinternalversion
> Java HotSpot(TM) 64-Bit Server VM (23.0-b15-internal-jvmg) for solaris-amd64 JRE (1.8.0), built on Feb  8 2012 04:26:02 by "ct232829" with Sun Studio 12u1
> /export/twisti/build/hsx/hotspot-comp/hotspot/build/jdk-solaris/bin/java -d64 -server -version
> java version "1.8.0-ea"
> Java(TM) SE Runtime Environment (build 1.8.0-ea-b24)
> Java HotSpot(TM) 64-Bit Server VM (build 23.0-b15-internal-jvmg, mixed mode)
> 
> I also added printing -Xinternalversion to test_jdk.  This makes it
> easier to verify the installed VM is the one you just built (and want
> to test).
> 
> make/Makefile
> make/bsd/makefiles/defs.make
> make/defs.make
>