linux-kernel - [patch] kbuild: create KBUILD

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Date:	Wed, 24 Jan 2007 00:53:06 +0000
From:	Oleg Verych <olecom@...wer.upol.cz>
To:	Linus Torvalds <torvalds@...l.org>, Sam Ravnborg <sam@...nborg.org>
Cc:	kbuild <kbuild-devel@...ts.sourceforge.net>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [patch] kbuild: create KBUILD_OUTPUT

kbuild: create KBUILD_OUTPUT

 When requesting build to another directory, try to create it first.

Cc: Sam Ravnborg <sam@...nborg.org>
Signed-off-by: Oleg Verych <olecom@...wer.upol.cz>
---

,-*- bash -*-
|olecom@...n:~/kernel.org/_work/src/linux-2.6.20-rc5$
|olecom@...n:~/kernel.org/_work/src/linux-2.6.20-rc5$ make O=/tmp/build
|cd: 1: can't cd to /tmp/build
|Makefile:116: *** output directory "/tmp/build" does not exist.  Stop.
|olecom@...n:~/kernel.org/_work/src/linux-2.6.20-rc5$ patch -p1 <../../va-patch/
|kbuild-create-output-dir.patch
|patching file Makefile
|olecom@...n:~/kernel.org/_work/src/linux-2.6.20-rc5$ make O=/tmp/build
|HOSTCC scripts/basic/fixdep HOSTCC scripts/basic/docproc make[3]: ***
|[scripts/basic/docproc] Interrupt make[2]: *** [scripts_basic] Interrupt
|make: *** [_all] Interrupt
|
|olecom@...n:~/kernel.org/_work/src/linux-2.6.20-rc5$
`-*-

--- linux-2.6.20-rc5/Makefile~orig	2007-01-12 19:54:26.000000000 +0100
+++ linux-2.6.20-rc5/Makefile	2007-01-24 00:59:55.926951750 +0100
@@ -113,5 +113,5 @@
 # check that the output directory actually exists
 saved-output := $(KBUILD_OUTPUT)
-KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
+KBUILD_OUTPUT := $(shell d=$(KBUILD_OUTPUT) ; mkdir -p $$d && cd $$d && pwd)
 $(if $(KBUILD_OUTPUT),, \
      $(error output directory "$(saved-output)" does not exist))
-
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