diff --git a/Make.inc b/Make.inc
index 81ff923156ed8..7846a5f89f2d6 100644
--- a/Make.inc
+++ b/Make.inc
@@ -96,7 +96,7 @@ ARCH:=
 ifeq ($(BUILDROOT),)
 ifeq ("$(origin O)", "command line")
   BUILDROOT := $(abspath $O)
-  BUILDDIR := $(abspath $(BUILDROOT)/$(shell $(JULIAHOME)/contrib/relative_path.sh $(JULIAHOME) $(SRCDIR)))
+  BUILDDIR := $(abspath $(BUILDROOT)/$(shell $(JULIAHOME)/contrib/relative_path.sh $(JULIAHOME) $(abspath $(dir $(lastword $(MAKEFILE_LIST))))))
   $(info $(shell printf '\033[32;1mBuilding into $(BUILDROOT)\033[0m')) # use printf to expand the escape sequences
 else
   BUILDROOT:=$(JULIAHOME)