src/ci/docker/scripts/freebsd-toolchain.sh

   1 #!/bin/bash
   2 # ignore-tidy-linelength
   3
   4 set -eux
   5
   6 arch=$1
   7 binutils_version=2.25.1
   8 freebsd_version=10.3
   9 triple=$arch-unknown-freebsd10
  10 sysroot=/usr/local/$triple
  11
  12 hide_output() {
  13   set +x
  14   local on_err="
  15 echo ERROR: An error was encountered with the build.
  16 cat /tmp/build.log
  17 exit 1
  18 "
  19   trap "$on_err" ERR
  20   bash -c "while true; do sleep 30; echo \$(date) - building ...; done" &
  21   local ping_loop_pid=$!
  22   $@ &> /tmp/build.log
  23   trap - ERR
  24   kill $ping_loop_pid
  25   set -x
  26 }
  27
  28 # First up, build binutils
  29 mkdir binutils
  30 cd binutils
  31 curl https://ftp.gnu.org/gnu/binutils/binutils-${binutils_version}.tar.bz2 | tar xjf -
  32 mkdir binutils-build
  33 cd binutils-build
  34 hide_output ../binutils-${binutils_version}/configure \
  35   --target="$triple" --with-sysroot="$sysroot"
  36 hide_output make -j"$(getconf _NPROCESSORS_ONLN)"
  37 hide_output make install
  38 cd ../..
  39 rm -rf binutils
  40
  41 # Next, download the FreeBSD libraries and header files
  42 mkdir -p "$sysroot"
  43 case $arch in
  44   (x86_64) freebsd_arch=amd64 ;;
  45   (i686) freebsd_arch=i386 ;;
  46 esac
  47
  48 files_to_extract=(
  49 "./usr/include"
  50 "./usr/lib/*crt*.o"
  51 )
  52 # Try to unpack only the libraries the build needs, to save space.
  53 for lib in c cxxrt gcc_s m thr util; do
  54   files_to_extract=("${files_to_extract[@]}" "./lib/lib${lib}.*" "./usr/lib/lib${lib}.*")
  55 done
  56 for lib in c++ c_nonshared compiler_rt execinfo gcc pthread rt ssp_nonshared; do
  57   files_to_extract=("${files_to_extract[@]}" "./usr/lib/lib${lib}.*")
  58 done
  59
  60 # Originally downloaded from:
  61 # https://download.freebsd.org/ftp/releases/${freebsd_arch}/${freebsd_version}-RELEASE/base.txz
  62 URL=https://ci-mirrors.rust-lang.org/rustc/2019-04-04-freebsd-${freebsd_arch}-${freebsd_version}-RELEASE-base.txz
  63 curl "$URL" | tar xJf - -C "$sysroot" --wildcards "${files_to_extract[@]}"
  64
  65 # Fix up absolute symlinks from the system image.  This can be removed
  66 # for FreeBSD 11.  (If there's an easy way to make them relative
  67 # symlinks instead, feel free to change this.)
  68 set +x
  69 find "$sysroot" -type l | while read symlink_path; do
  70   symlink_target=$(readlink "$symlink_path")
  71   case $symlink_target in
  72     (/*)
  73       echo "Fixing symlink ${symlink_path} -> ${sysroot}${symlink_target}" >&2
  74       ln -nfs "${sysroot}${symlink_target}" "${symlink_path}" ;;
  75   esac
  76 done
  77 set -x
  78
  79 # Clang can do cross-builds out of the box, if we give it the right
  80 # flags.  (The local binutils seem to work, but they set the ELF
  81 # header "OS/ABI" (EI_OSABI) field to SysV rather than FreeBSD, so
  82 # there might be other problems.)
  83 #
  84 # The --target option is last because the cross-build of LLVM uses
  85 # --target without an OS version ("-freebsd" vs. "-freebsd10").  This
  86 # makes Clang default to libstdc++ (which no longer exists), and also
  87 # controls other features, like GNU-style symbol table hashing and
  88 # anything predicated on the version number in the __FreeBSD__
  89 # preprocessor macro.
  90 for tool in clang clang++; do
  91   tool_path=/usr/local/bin/${triple}-${tool}
  92   cat > "$tool_path" <<EOF
  93 #!/bin/sh
  94 exec $tool --sysroot=$sysroot --prefix=${sysroot}/bin "\$@" --target=$triple
  95 EOF
  96   chmod +x "$tool_path"
  97 done