diff --git a/Makefile.in b/Makefile.in
index 2b9cf9c958a..05b5c722106 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -493,6 +493,12 @@ ifneq ($(findstring clean,$(MAKECMDGOALS)),)
 endif
 
 ifneq ($(findstring install,$(MAKECMDGOALS)),)
+  ifdef DESTDIR
+    CFG_INFO := $(info cfg: setting CFG_PREFIX via DESTDIR, $(DESTDIR))
+    CFG_PREFIX:=$(DESTDIR)
+    export CFG_PREFIX
+  endif
+
   CFG_INFO := $(info cfg: including install rules)
   include $(CFG_SRC_DIR)/mk/install.mk
 endif