--- old/make/HotspotWrapper.gmk	2014-08-21 11:34:15.000000000 -0500
+++ new/make/HotspotWrapper.gmk	2014-08-21 11:34:15.000000000 -0500
@@ -35,8 +35,8 @@
 
 default: all
 
-# Get all files except .hg in the hotspot directory.
-HOTSPOT_FILES := $(shell $(FIND) -L $(HOTSPOT_TOPDIR) -name ".hg" -prune -o -print)
+# Get all files except .hg and ide in the hotspot directory.
+HOTSPOT_FILES := $(shell $(FIND) -L $(HOTSPOT_TOPDIR) -name ".hg" -prune -o -print | $(GREP) -v "ide")
 
 # The old build creates hotspot output dir before calling hotspot and
 # not doing it breaks builds on msys.