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Date: Sun, 24 Nov 2002 08:09:41 +0100
From: Sam Ravnborg <sam@ravnborg.org>
To: linux-kernel@vger.kernel.org
Subject: Re: [CFT] Separate obj dir [2]
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Hi all.

I the previous mail I forgot the kbuild script - sorry.
Here it comes (as a patch).

	Sam

--- /dev/null	2002-08-31 01:31:37.000000000 +0200
+++ kbuild	2002-11-24 08:06:33.000000000 +0100
@@ -0,0 +1,48 @@
+#!/bin/sh
+#
+# This script is used to build a kernel from a directory
+# separate from the kernel src tree.
+# The location of this script is assumed to be the root of
+# the kernel src tree. Do not copy it elsewhere.
+# Usage: kbuild [Usual options provided to make]
+
+# kbuild prints out SRCTREE and OBJTREE when started, and then makes 
+# symlinks of relevant files from the kernelsrc.
+
+# Files we do not care about in the kernel src
+RCS_FIND_IGNORE="-name SCCS -o -name BitKeeper -o -name .svn -o -name CVS"
+
+# Obtain absolute paths for SRCTREE and OBJTREE
+OBJTREE=$PWD
+cd `dirname $0`
+SRCTREE=$PWD
+cd $OBJTREE
+echo OBJTREE $OBJTREE
+echo SRCTREE $SRCTREE
+
+# If kbuild is executed from the root of the kernel src tree just call make
+if [ "$SRCTREE" == "$OBJTREE" ]; then
+  rm -f .tmp_make_config
+  make $*
+else
+  # A directory separate from kernel src tree
+  # Test if make has been executed in kernel src tree already
+  if [ -f $SRCTREE/.config -o -d $SRCTREE/include/asm ]; then
+    echo '$SRCTREE contains generated files, please run "make mrproper" in the SRCTREE'
+  else
+    # Symlink relevant files
+    for a in `cd $SRCTREE; \
+      find \( $RCS_FIND_IGNORE \) -prune -o -name Makefile\*`; do
+      if [ ! -d `dirname $a` ]; then
+        mkdir -p $a
+      fi
+      ln -fs $SRCTREE/$a $a
+    done
+
+    ( echo "srctree := $SRCTREE";
+      echo "objtree := $OBJTREE";
+    ) > .tmp_make_config
+    echo "#Dummy file" > Rules.make
+    make $*
+  fi
+fi