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# We document platform support for minimum glibc 2.17 and kernel 3.2.
# CentOS 7 has headers for kernel 3.10, but that's fine as long as we don't
# actually use newer APIs in rustc or std without a fallback. It's more
# important that we match glibc for ELF symbol versioning.
FROM centos:7
WORKDIR /build
RUN yum upgrade -y && \
yum install -y epel-release && \
yum install -y \
automake \
bzip2 \
file \
cmake3 \
gcc \
gcc-c++ \
git \
glibc-devel.i686 \
glibc-devel.x86_64 \
libedit-devel \
libstdc++-devel.i686 \
libstdc++-devel.x86_64 \
make \
ncurses-devel \
openssl-devel \
patch \
perl \
pkgconfig \
python3 \
unzip \
wget \
xz \
zlib-devel.i686 \
zlib-devel.x86_64 \
&& yum clean all
RUN mkdir -p /rustroot/bin && ln -s /usr/bin/cmake3 /rustroot/bin/cmake
ENV PATH=/rustroot/bin:$PATH
ENV LD_LIBRARY_PATH=/rustroot/lib64:/rustroot/lib32:/rustroot/lib
ENV PKG_CONFIG_PATH=/rustroot/lib/pkgconfig
WORKDIR /tmp
RUN mkdir /home/user
COPY host-x86_64/dist-x86_64-linux/shared.sh /tmp/
# Need at least GCC 5.1 to compile LLVM nowadays
COPY host-x86_64/dist-x86_64-linux/build-gcc.sh /tmp/
RUN ./build-gcc.sh && yum remove -y gcc gcc-c++
# Now build LLVM+Clang, afterwards configuring further compilations to use the
# clang/clang++ compilers.
COPY host-x86_64/dist-x86_64-linux/build-clang.sh /tmp/
RUN ./build-clang.sh
ENV CC=clang CXX=clang++
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 llvm.ninja=false \
--set rust.jemalloc
ENV SCRIPT python3 ../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
# There was a bad interaction between "old" 32-bit binaries on current 64-bit
# kernels with selinux enabled, where ASLR mmap would sometimes choose a low
# address and then block it for being below `vm.mmap_min_addr` -> `EACCES`.
# This is probably a kernel bug, but setting `ulimit -Hs` works around it.
# See also `src/ci/run.sh` where this takes effect.
ENV SET_HARD_RLIMIT_STACK 1
ENV DIST_REQUIRE_ALL_TOOLS 1
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