The control builds for 6u14 b01 are failing, because the build thinks there isn't any hotspot source, so all builds on all platforms are failing for 6u14.
The sanity WARNING occurs if BUILD_HOTSPOT is false.
> WARNING: You are not building HOTSPOT workspace from
> the control build. Hotspot libs will be obtained from
> the location set in ALT_HOTSPOT_IMPORT_PATH.
I'm looking at control/make/common/Defs.gmk
> BUILD_HOTSPOT := $(shell if [ -r $(HOTSPOT_TOPDIR)/build/$(PLATFORM) ]; then \
> $(ECHO) true; \
> else \
> $(ECHO) false; \
Without hotspot/build/$PLATFORM existing, the control build makes the assumption that there is no hotspot source for $PLATFORM, setting BUILD_HOTSPOT to false, which means hotspot isn't built by control, even though the hotspot source is there.