linux-kernel - [PATCH V2] try to create KBUILD

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Date:	Thu, 15 Dec 2011 08:40:36 -0500 (EST)
From:	Peter Foley <pefoley2@...izon.net>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Kbuild Mailing List <linux-kbuild@...r.kernel.org>,
	mmarek@...e.cz
Subject: [PATCH V2] try to create KBUILD_OUTDIR automatically

This patch makes it possible to execute make O=/path/to/work instead of
mkdir -p /path/to/work
make O=/path/to/work

Signed-off-by: Peter Foley <pefoley2@...izon.net>
---

V2:
update error message

 Makefile |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index d1ea73f..5855399 100644
--- a/Makefile
+++ b/Makefile
@@ -115,11 +115,11 @@ $(CURDIR)/Makefile Makefile: ;
 
 ifneq ($(KBUILD_OUTPUT),)
 # Invoke a second make in the output directory, passing relevant variables
-# check that the output directory actually exists
+# check that the output directory exists or can be created
 saved-output := $(KBUILD_OUTPUT)
-KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
+KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && /bin/pwd)
 $(if $(KBUILD_OUTPUT),, \
-     $(error output directory "$(saved-output)" does not exist))
+     $(error output directory "$(saved-output)" does not exist and cannot be created))
 
 PHONY += $(MAKECMDGOALS) sub-make
 
-- 
1.7.8

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