# Copyright 2026 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.
# ==============================================================================

# Dockerfile to build a manylinux 2014/2014 compliant cross-compiler.
#
# Builds a devtoolset-7 environment with manylinux2014 compatible
# glibc (2.12) and libstdc++ (4.4) in /dt7.
#
# Builds a devtoolset-9 environment with manylinux2014 compatible
# glibc (2.17) and libstdc++ (4.8) in /dt9.
#
# To build a new version, run:
# $ docker build -f Dockerfile.local-toolchain-ubuntu20.04-manylinux2014 \
#  --tag "local-toolchain-ubuntu20.04-manylinux2014" .

FROM ubuntu:20.04 as local-toolchain-ubuntu20.04-manylinux2014

ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get install -y \
      cpio \
      file \
      flex \
      g++ \
      make \
      patch \
      rpm2cpio \
      unar \
      wget \
      xz-utils \
      && \
    rm -rf /var/lib/apt/lists/*

ADD devtoolset/fixlinks.sh fixlinks.sh
ADD devtoolset/build_devtoolset.sh build_devtoolset.sh
ADD devtoolset/rpm-patch.sh rpm-patch.sh

# Set up a sysroot for glibc 2.12 / libstdc++ 4.4 / devtoolset-7 in /dt7.
RUN /build_devtoolset.sh devtoolset-7 /dt7
# Set up a sysroot for glibc 2.17 / libstdc++ 4.8 / devtoolset-9 in /dt9.
RUN /build_devtoolset.sh devtoolset-9 /dt9