RFR: JDK-8197571 Change storage location for generated-configure.sh

[Volker Simonis]

Hi Magnus,

thanks for doing this change. It was actually on my TODO list but I
somehow forgot about it :)

The change looks good. Thumb up from me,
Volker

On Mon, Feb 12, 2018 at 2:09 PM, Magnus Ihse Bursie
<magnus.ihse.bursie at oracle.com> wrote:
> In JDK-8195689, the generated-configure.sh was no longer checked in, but
> locally generated. The selected location for generation ($TOPDIR/.build) was
> not unproblematic for some use cases. This patch attempts remedy this.
>
> The new behaviour will be this:
>  * If run from $TOPDIR, the storage directory will be
> $TOPDIR/build/.configure-support.
>  * If run from $CUSTOM_ROOT, the storage directory will be
> $CUSTOM_ROOT/build/.configure-support.
>  * If run from any other directory (about to become the build output
> directory for the configuration), the storage directory will be
> $PWD/configure-support.
>
> This will allow "rm -rf $TOPDIR/build" to function as before to remove all
> build artifacts. It will allow configuration created in out-of-tree
> directories to have the script generated locally.
>
> I could not put the output file in build/$BUILD/configure-support, since the
> $BUILD name is not yet determined. I did not want to put it in
> build/configure-support, since that would make it look like a configuration
> to the code that enumerates configurations in build.
>
> I hope this addresses all issues that has been raised.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8197571
> WebRev:
> http://cr.openjdk.java.net/~ihse/JDK-8197571-change-storage-location-for-generated-configure/webrev.01
>
> /Magnus
>