steps:
# We're executing in the container as non-root but `yum` requires root. We
# need to install `sudo` but to do that we need `sudo`. Do a bit of a weird
# hack where we use the host `docker` executable to re-execute in our own
# container with the root user to install `sudo`
- bash: /tmp/docker exec -t -u 0 ci-container sh -c "yum install -y sudo"
  displayName: Configure sudo

# See https://edwards.sdsu.edu/research/c11-on-centos-6/ for where these
# various commands came from.
- bash: |
    set -e
    sudo yum install -y centos-release-scl cmake xz epel-release
    sudo yum install -y rh-python36 patchelf unzip
    sudo yum install -y devtoolset-8-gcc devtoolset-8-binutils devtoolset-8-gcc-c++
    echo "##vso[task.prependpath]/opt/rh/devtoolset-8/root/usr/bin"
    echo "##vso[task.prependpath]/opt/rh/rh-python36/root/usr/bin"
  displayName: Install system dependencies

# Delete `libstdc++.so` to force gcc to link against `libstdc++.a` instead.
# This is a hack and not the right way to do this, but it ends up doing the
# right thing for now.
- bash: sudo rm -f /opt/rh/devtoolset-8/root/usr/lib/gcc/x86_64-redhat-linux/8/libstdc++.so
  displayName: Force a static libstdc++