kbuild: fix building with O=.. options

[firefly-linux-kernel-4.4.55.git] / scripts / mkmakefile

diff --git a/scripts/mkmakefile b/scripts/mkmakefile
index ee39facee15238f8f4148fc2b7e914f07a31b613..9ad1bd793252ff4241e99813b3c179afc99e9363 100644 (file)
--- a/scripts/mkmakefile
+++ b/scripts/mkmakefile
@@ -11,6 +11,12 @@
 
 
 test ! -r $2/Makefile -o -O $2/Makefile || exit 0
+# Only overwrite automatically generated Makefiles
+# (so we do not overwrite kernel Makefile)
+if ! grep -q Automatically $2/Makefile
+then
+       exit 0
+fi
 echo "  GEN     $2/Makefile"
 
 cat << EOF > $2/Makefile