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-rw-r--r--Makefile4
1 files changed, 4 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 5806729cef64..26500ffc5eab 100644
--- a/Makefile
+++ b/Makefile
@@ -128,6 +128,10 @@ _all:
# Cancel implicit rules on top Makefile
$(CURDIR)/Makefile Makefile: ;
+ifneq ($(words $(subst :, ,$(CURDIR))), 1)
+ $(error main directory cannot contain spaces nor colons)
+endif
+
ifneq ($(KBUILD_OUTPUT),)
# Invoke a second make in the output directory, passing relevant variables
# check that the output directory actually exists