HAWQ-1535. Set PXF_HOME
diff --git a/pxf/Makefile b/pxf/Makefile
index ae50996..92e11e7 100644
--- a/pxf/Makefile
+++ b/pxf/Makefile
@@ -24,6 +24,7 @@
     ifneq "$(PXF_HOME)" ""
         BUILD_PARAMS= -DdeployPath=$(PXF_HOME)
     else ifneq "$(GPHOME)" ""
+        PXF_HOME= $(GPHOME)/pxf
         BUILD_PARAMS= -DdeployPath="$(GPHOME)/pxf"
     else
 		@echo "Cannot invoke install without configuring either PXF_HOME or GPHOME"