|  | # Copyright 2020 Google LLC | 
|  | # | 
|  | # 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 | 
|  | # | 
|  | #      https://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. | 
|  |  | 
|  | # An image for cross-compiling IREE towards Android using CMake. | 
|  |  | 
|  | ARG NDK_VERSION=r21d | 
|  |  | 
|  | FROM gcr.io/iree-oss/util@sha256:40846b4aea5886af3250399d6adfdb3e1195a8b0177706bb0375e812d62dc49c AS install-ndk | 
|  | ARG NDK_VERSION | 
|  | WORKDIR /install-ndk | 
|  |  | 
|  | RUN wget "https://dl.google.com/android/repository/android-ndk-${NDK_VERSION?}-linux-x86_64.zip" | 
|  |  | 
|  | RUN unzip "android-ndk-${NDK_VERSION?}-linux-x86_64.zip" -d /usr/src/ | 
|  |  | 
|  | FROM gcr.io/iree-oss/cmake@sha256:9d9953acf5ca0cf1ff3e8de32f10f24dfab1c4e8ec5d1fc047f556024ee4bed6 AS final | 
|  | ARG NDK_VERSION | 
|  | COPY --from=install-ndk "/usr/src/android-ndk-${NDK_VERSION}" "/usr/src/android-ndk-${NDK_VERSION}" | 
|  | ENV ANDROID_NDK "/usr/src/android-ndk-${NDK_VERSION}" |