bitkeeper revision 1.1087 (40f56a0eJ3YluUqh_hXolLsP2iLy0w)

Add mkbuildtree script to prepare a Linux 2.6 build tree.

diff --git a/.rootkeys b/.rootkeys
index 0d34efe94b38c5bffb023baa830fe4c8a1fa2301..cf8b154e9c6d4417e9c4b27af0b74a51aa9615b6 100644 (file)
--- a/.rootkeys
+++ b/.rootkeys
@@ -246,6 +246,7 @@
 40f5623cndVUFlkxpf7Lfx7xu8madQ linux-2.6.7-xen-sparse/include/asm-xen/multicall.h
 40f5623cTZ80EwjWUBlh44A9F9i_Lg linux-2.6.7-xen-sparse/include/asm-xen/netif.h
 40f5623cBiQhPHILVLrl3xa6bDBaRg linux-2.6.7-xen-sparse/include/asm-xen/xen.h
+40f56a0ddHCSs3501MY4hRf22tctOw linux-2.6.7-xen-sparse/mkbuildtree
 40e1b09db5mN69Ijj0X_Eol-S7dXiw tools/Make.defs
 3f776bd1Hy9rn69ntXBhPReUFw9IEA tools/Makefile
 401d7e160vaxMBAUSLSicuZ7AQjJ3w tools/examples/Makefile

diff --git a/linux-2.6.7-xen-sparse/mkbuildtree b/linux-2.6.7-xen-sparse/mkbuildtree
new file mode 100755 (executable)
index 0000000..b5e2474
--- /dev/null
+++ b/linux-2.6.7-xen-sparse/mkbuildtree
@@ -0,0 +1,103 @@
+#!/bin/sh
+
+# mkbuildtree <build tree>
+#
+# Creates symbolic links in <build tree> for the sparse tree
+# in the current directory.
+
+# Script to determine the relative path between two directories.
+# Copyright (c) D. J. Hawkey Jr. 2002
+# Fixed for Xen project by K. Fraser in 2003.  
+abs_to_rel ()
+{
+       local CWD SRCPATH
+                
+       if [ "$1" != "/" -a "${1##*[^/]}" = "/" ]; then
+               SRCPATH=${1%?}
+       else
+               SRCPATH=$1
+       fi
+       if [ "$2" != "/" -a "${2##*[^/]}" = "/" ]; then
+               DESTPATH=${2%?}
+       else
+               DESTPATH=$2
+       fi
+
+       CWD=$PWD
+       [ "${1%%[^/]*}" != "/" ] && cd $1 && SRCPATH=$PWD
+       [ "${2%%[^/]*}" != "/" ] && cd $2 && DESTPATH=$PWD
+       [ "$CWD" != "$PWD" ] && cd $CWD
+
+       BASEPATH=$SRCPATH
+
+       [ "$SRCPATH" = "$DESTPATH" ] && DESTPATH="." && return
+       [ "$SRCPATH" = "/" ] && DESTPATH=${DESTPATH#?} && return
+
+       while [ "$BASEPATH/" != "${DESTPATH%${DESTPATH#$BASEPATH/}}" ]; do
+          BASEPATH=${BASEPATH%/*}
+       done
+
+       SRCPATH=${SRCPATH#$BASEPATH}
+        DESTPATH=${DESTPATH#$BASEPATH}
+        DESTPATH=${DESTPATH#?}
+       while [ -n "$SRCPATH" ]; do
+               SRCPATH=${SRCPATH%/*}
+               DESTPATH="../$DESTPATH"
+       done
+
+       [ -z "$BASEPATH" ] && BASEPATH="/"
+       [ "${DESTPATH##*[^/]}" = "/" ] && DESTPATH=${DESTPATH%?}
+}
+
+# relative_lndir <target_dir>
+# Creates a tree of symlinks in the current working directory that mirror
+# real files in <target_dir>. <target_dir> should be relative to the current
+# working directory. Symlinks in <target_dir> are ignored. Source-control files
+# are ignored.
+relative_lndir ()
+{
+  local SYMLINK_DIR REAL_DIR pref i j
+  SYMLINK_DIR=$PWD
+  REAL_DIR=$1
+  (
+  cd $REAL_DIR
+  for i in `find . -type d | grep -v SCCS`; do
+    [ -d $SYMLINK_DIR/$i ] || mkdir -p $SYMLINK_DIR/$i
+    (
+    cd $i
+    pref=`echo $i | sed -e 's#/[^/]*#../#g' -e 's#^\.##'`
+    for j in `find . -type f -o -type l -maxdepth 1`; do
+      ln -sf ${pref}${REAL_DIR}/$i/$j ${SYMLINK_DIR}/$i/$j
+    done
+    )
+  done
+  )
+}
+
+[ "$1" == "" ] && { echo "Syntax: $0 <linux tree to xenify>"; exit 1; }
+
+# Get absolute path to the destination directory
+pushd . >/dev/null
+cd ${1}
+AD=$PWD
+popd >/dev/null
+  
+# Get absolute path to the source directory
+AS=`pwd`
+
+# Get path to source, relative to destination
+abs_to_rel ${AD} ${AS}
+RS=$DESTPATH
+
+# Remove old copies of files and directories at the destination
+for i in `find . -type f -o -type l` ; do rm -f ${AD}/${i#./} ; done
+
+# We now work from the destination directory
+cd ${AD}
+
+# Remove old symlinks
+for i in `find . -type l`; do rm -f $i; done
+
+# Create symlinks of files and directories which exist in the sparse source
+relative_lndir ${RS}
+rm -f mkbuildtree