From e86fc9f47f05f47375d5a306fe979012e3b7e8e4 Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@linux.ie>
Date: Wed, 14 Jul 2004 12:14:37 +0000
Subject: [PATCH] allow O= usage for Linux 2.6 kernel building in another
 directory

---
 linux-core/Makefile | 11 +++++++++++
 linux/Makefile      | 11 +++++++++++
 2 files changed, 22 insertions(+)

diff --git a/linux-core/Makefile b/linux-core/Makefile
index 3d56c96c..066766a7 100644
--- a/linux-core/Makefile
+++ b/linux-core/Makefile
@@ -41,6 +41,10 @@ RUNNING_REL := $(shell uname -r)
 LINUXDIR := /lib/modules/$(RUNNING_REL)/build
 endif
 
+ifndef O
+O := $(LINUXDIR)
+endif
+
 MACHINE := $(shell uname -m)
 
 # Modules for all architectures
@@ -153,6 +157,13 @@ RHCONFIG :=
 endif
 endif
 
+ifneq ($(HAVECONFIG),y)
+ifneq ($(0),$(LINUXDIR))
+GETCONFIG += O=$(O)
+endif
+HAVECONFIG := $(shell if [ -e $(O)/.config ]; then echo y; fi)
+endif
+
 ifneq ($(HAVECONFIG),y)
 $(error Cannot find a kernel config file)
 endif
diff --git a/linux/Makefile b/linux/Makefile
index 3d56c96c..066766a7 100644
--- a/linux/Makefile
+++ b/linux/Makefile
@@ -41,6 +41,10 @@ RUNNING_REL := $(shell uname -r)
 LINUXDIR := /lib/modules/$(RUNNING_REL)/build
 endif
 
+ifndef O
+O := $(LINUXDIR)
+endif
+
 MACHINE := $(shell uname -m)
 
 # Modules for all architectures
@@ -153,6 +157,13 @@ RHCONFIG :=
 endif
 endif
 
+ifneq ($(HAVECONFIG),y)
+ifneq ($(0),$(LINUXDIR))
+GETCONFIG += O=$(O)
+endif
+HAVECONFIG := $(shell if [ -e $(O)/.config ]; then echo y; fi)
+endif
+
 ifneq ($(HAVECONFIG),y)
 $(error Cannot find a kernel config file)
 endif