[PATCH 09/13] kbuild: do not overwrite .gitignore in output directory

[Ilias Apalodimas]

Backported from kernel
commit 156e7cbb3ef5 ("kbuild: do not overwrite .gitignore in output directory")

Signed-off-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>
---
 Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 055898935372..19fa77953d2f 100644
--- a/Makefile
+++ b/Makefile
@@ -519,7 +519,8 @@ outputmakefile:
 ifneq ($(KBUILD_SRC),)
 	$(Q)ln -fsn $(srctree) source
 	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree)
-	$(Q){ echo "# this is build directory, ignore it"; echo "*"; } > .gitignore
+	$(Q)test -e .gitignore || \
+       	{ echo "# this is build directory, ignore it"; echo "*"; } > .gitignore
 endif
 
 # To make sure we do not include .config for any of the *config targets
-- 
2.49.0