[PATCH 2/3] kbuild: fix silentoldconfig with make O=

[Sam Ravnborg <sam@ravnborg.org>]

Subject: [PATCH 2/3] kbuild: fix silentoldconfig with make O=

Al Viro reported that sometimes silentoldconfig failed because
output directory was missing.
So create it unconditionally before executing conf

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

---

 Makefile |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

5011cdd01bedd66b314e330a638c97984c71b53d
diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -491,6 +491,7 @@ include .config
 # If .config is newer than include/linux/autoconf.h, someone tinkered
 # with it and forgot to run make oldconfig
 include/linux/autoconf.h: .config
+	$(Q)mkdir -p include/linux
 	$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
 else
 # Dummy target needed, because used as prerequisite
-
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