diff --git a/build_tools/build_mlir.sh b/build_tools/build_mlir.sh
new file mode 100755
index 0000000..5ccefb9
--- /dev/null
+++ b/build_tools/build_mlir.sh
@@ -0,0 +1,52 @@
+#!/bin/bash
+# Copyright 2020 The TensorFlow Authors. All Rights Reserved.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -e
+
+if [[ $# -ne 2 ]] ; then
+  echo "Usage: $0 <path/to/llvm> <build_dir>"
+  exit 1
+fi
+
+# LLVM source
+LLVM_SRC_DIR="$1"
+build_dir="$2"
+
+if ! [ -f "$LLVM_SRC_DIR/llvm/CMakeLists.txt" ]; then
+  echo "Expected the path to LLVM to be set correctly (got '$LLVM_SRC_DIR'): can't find CMakeLists.txt"
+  exit 1
+fi
+echo "Using LLVM source dir: $LLVM_SRC_DIR"
+
+# Setup directories.
+echo "Building MLIR in $build_dir"
+mkdir -p "$build_dir"
+
+echo "Beginning build (commands will echo)"
+set -x
+
+cmake -GNinja \
+  "-H$LLVM_SRC_DIR/llvm" \
+  "-B$build_dir" \
+  -DLLVM_INSTALL_UTILS=ON \
+  -DLLVM_ENABLE_LLD=ON \
+  -DLLVM_ENABLE_PROJECTS=mlir \
+  -DLLVM_TARGETS_TO_BUILD="X86;NVPTX;AMDGPU" \
+  -DLLVM_INCLUDE_TOOLS=ON \
+  -DLLVM_BUILD_TOOLS=OFF \
+  -DLLVM_INCLUDE_TESTS=OFF \
+  -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+  -DLLVM_ENABLE_ASSERTIONS=On
+
+cmake --build "$build_dir" --target all --target mlir-cpu-runner
diff --git a/build_tools/llvm_version.txt b/build_tools/llvm_version.txt
new file mode 100644
index 0000000..a8703ae
--- /dev/null
+++ b/build_tools/llvm_version.txt
@@ -0,0 +1,2 @@
+b5059b7140232559ed123cb94d4e8f75ca9a44dc
+