Make this file capable of being used by both LLVM and its projects
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19588 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Makefile.common b/Makefile.common
index 2b0a696..d33d3da 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -57,7 +57,11 @@
#
# Configuration file to set paths specific to local installation of LLVM
#
+ifndef LLVM_OBJ_ROOT
include $(LEVEL)/Makefile.config
+else
+include $(LLVM_OBJ_ROOT)/Makefile.config
+endif
#
# Include all of the build rules used for making LLVM