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Dockerfile
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Dockerfile
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FROM centos:5
WORKDIR /build
# Centos 5 is EOL and is no longer available from the usual mirrors, so switch
# to http://vault.centos.org/
RUN sed -i 's/enabled=1/enabled=0/' /etc/yum/pluginconf.d/fastestmirror.conf
RUN sed -i 's/mirrorlist/#mirrorlist/' /etc/yum.repos.d/*.repo
RUN sed -i 's|#\(baseurl.*\)mirror.centos.org/centos/$releasever|\1vault.centos.org/5.11|' /etc/yum.repos.d/*.repo
RUN yum upgrade -y && yum install -y \
curl \
bzip2 \
gcc \
gcc-c++ \
make \
glibc-devel \
perl \
zlib-devel \
file \
xz \
which \
pkgconfig \
wget \
autoconf \
gettext
ENV PATH=/rustroot/bin:$PATH
ENV LD_LIBRARY_PATH=/rustroot/lib64:/rustroot/lib
ENV PKG_CONFIG_PATH=/rustroot/lib/pkgconfig
WORKDIR /tmp
COPY host-x86_64/dist-x86_64-linux/shared.sh /tmp/
# We need a build of openssl which supports SNI to download artifacts from
# static.rust-lang.org. This'll be used to link into libcurl below (and used
# later as well), so build a copy of OpenSSL with dynamic libraries into our
# generic root.
COPY host-x86_64/dist-x86_64-linux/build-openssl.sh /tmp/
RUN ./build-openssl.sh
# The `curl` binary on CentOS doesn't support SNI which is needed for fetching
# some https urls we have, so install a new version of libcurl + curl which is
# using the openssl we just built previously.
#
# Note that we also disable a bunch of optional features of curl that we don't
# really need.
COPY host-x86_64/dist-x86_64-linux/build-curl.sh /tmp/
RUN ./build-curl.sh
# binutils < 2.22 has a bug where the 32-bit executables it generates
# immediately segfault in Rust, so we need to install our own binutils.
#
# See https://github.com/rust-lang/rust/issues/20440 for more info
COPY host-x86_64/dist-x86_64-linux/build-binutils.sh /tmp/
RUN ./build-binutils.sh
# libssh2 (a dependency of Cargo) requires cmake 2.8.11 or higher but CentOS
# only has 2.6.4, so build our own
COPY host-x86_64/dist-x86_64-linux/build-cmake.sh /tmp/
RUN ./build-cmake.sh
# Need a newer version of gcc than centos has to compile LLVM nowadays
COPY host-x86_64/dist-x86_64-linux/build-gcc.sh /tmp/
RUN ./build-gcc.sh
# CentOS 5.5 has Python 2.4 by default, but LLVM needs 2.7+
COPY host-x86_64/dist-x86_64-linux/build-python.sh /tmp/
RUN ./build-python.sh
# Now build LLVM+Clang 7, afterwards configuring further compilations to use the
# clang/clang++ compilers.
COPY host-x86_64/dist-x86_64-linux/build-clang.sh host-x86_64/dist-x86_64-linux/llvm-project-centos.patch /tmp/
RUN ./build-clang.sh
ENV CC=clang CXX=clang++
# Apparently CentOS 5.5 desn't have `git` in yum, but we're gonna need it for
# cloning, so download and build it here.
COPY host-x86_64/dist-x86_64-linux/build-git.sh /tmp/
RUN ./build-git.sh
# for sanitizers, we need kernel headers files newer than the ones CentOS ships
# with so we install newer ones here
COPY host-x86_64/dist-x86_64-linux/build-headers.sh /tmp/
RUN ./build-headers.sh
# OpenSSL requires a more recent version of perl
# with so we install newer ones here
COPY host-x86_64/dist-x86_64-linux/build-perl.sh /tmp/
RUN ./build-perl.sh
COPY scripts/sccache.sh /scripts/
RUN sh /scripts/sccache.sh
ENV HOSTS=i686-unknown-linux-gnu
ENV RUST_CONFIGURE_ARGS \
--enable-full-tools \
--enable-sanitizers \
--enable-profiler \
--set target.i686-unknown-linux-gnu.linker=clang \
--build=i686-unknown-linux-gnu \
--set rust.jemalloc
ENV SCRIPT python2.7 ../x.py dist --build $HOSTS --host $HOSTS --target $HOSTS
ENV CARGO_TARGET_I686_UNKNOWN_LINUX_GNU_LINKER=clang
# This was added when we switched from gcc to clang. It's not clear why this is
# needed unfortunately, but without this the stage1 bootstrap segfaults
# somewhere inside of a build script. The build ends up just hanging instead of
# actually killing the process that segfaulted, but if the process is run
# manually in a debugger the segfault is immediately seen as well as the
# misaligned stack access.
#
# Added in #50200 there's some more logs there
ENV CFLAGS -mstackrealign
# When we build cargo in this container, we don't want it to use the system
# libcurl, instead it should compile its own.
ENV LIBCURL_NO_PKG_CONFIG 1
ENV DIST_REQUIRE_ALL_TOOLS 1