--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/utils/crosstool/create-snapshots.sh	Thu Dec 12 14:37:49 2013 +0900
@@ -0,0 +1,41 @@
+#!/bin/bash
+#
+# Creates LLVM SVN snapshots: llvm-$REV.tar.bz2 and llvm-gcc-4.2-$REV.tar.bz2,
+# where $REV is an SVN revision of LLVM.  This is used for creating stable
+# tarballs which can be used to build known-to-work crosstools.
+#
+# Syntax:
+#   $0 [REV] -- grabs the revision $REV from SVN; if not specified, grabs the
+#   latest SVN revision.
+
+set -o nounset
+set -o errexit
+
+readonly LLVM_PROJECT_SVN="http://llvm.org/svn/llvm-project"
+
+getLatestRevisionFromSVN() {
+  svn info ${LLVM_PROJECT_SVN} | egrep ^Revision | sed 's/^Revision: //'
+}
+
+readonly REV="${1:-$(getLatestRevisionFromSVN)}"
+
+createTarballFromSVN() {
+  local module=$1
+  local log="${module}.log"
+  echo "Running: svn export -r ${REV} ${module}; log in ${log}"
+  svn -q export -r ${REV} ${LLVM_PROJECT_SVN}/${module}/trunk \
+      ${module} > ${log} 2>&1
+
+  # Create "module-revision.tar.bz2" packages from the SVN checkout dirs.
+  local tarball="${module}-${REV}.tar.bz2"
+  echo "Creating tarball: ${tarball}"
+  tar cjf ${tarball} ${module}
+
+  echo "Cleaning up '${module}'"
+  rm -rf ${module} ${log}
+}
+
+for module in "llvm" "llvm-gcc-4.2"; do
+  createTarballFromSVN ${module}
+done
+