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
