98 lines
3.0 KiB
Bash
Executable File
98 lines
3.0 KiB
Bash
Executable File
#!/bin/bash
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# ignore-tidy-linelength
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set -eux
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arch=$1
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binutils_version=2.25.1
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freebsd_version=10.3
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triple=$arch-unknown-freebsd10
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sysroot=/usr/local/$triple
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hide_output() {
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set +x
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local on_err="
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echo ERROR: An error was encountered with the build.
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cat /tmp/build.log
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exit 1
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"
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trap "$on_err" ERR
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bash -c "while true; do sleep 30; echo \$(date) - building ...; done" &
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local ping_loop_pid=$!
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$@ &> /tmp/build.log
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trap - ERR
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kill $ping_loop_pid
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set -x
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}
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# First up, build binutils
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mkdir binutils
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cd binutils
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curl https://ftp.gnu.org/gnu/binutils/binutils-${binutils_version}.tar.bz2 | tar xjf -
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mkdir binutils-build
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cd binutils-build
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hide_output ../binutils-${binutils_version}/configure \
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--target="$triple" --with-sysroot="$sysroot"
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hide_output make -j"$(getconf _NPROCESSORS_ONLN)"
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hide_output make install
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cd ../..
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rm -rf binutils
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# Next, download the FreeBSD libraries and header files
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mkdir -p "$sysroot"
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case $arch in
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(x86_64) freebsd_arch=amd64 ;;
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(i686) freebsd_arch=i386 ;;
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esac
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files_to_extract=(
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"./usr/include"
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"./usr/lib/*crt*.o"
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)
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# Try to unpack only the libraries the build needs, to save space.
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for lib in c cxxrt gcc_s m thr util; do
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files_to_extract=("${files_to_extract[@]}" "./lib/lib${lib}.*" "./usr/lib/lib${lib}.*")
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done
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for lib in c++ c_nonshared compiler_rt execinfo gcc pthread rt ssp_nonshared; do
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files_to_extract=("${files_to_extract[@]}" "./usr/lib/lib${lib}.*")
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done
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# Originally downloaded from:
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# https://download.freebsd.org/ftp/releases/${freebsd_arch}/${freebsd_version}-RELEASE/base.txz
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URL=https://ci-mirrors.rust-lang.org/rustc/2019-04-04-freebsd-${freebsd_arch}-${freebsd_version}-RELEASE-base.txz
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curl "$URL" | tar xJf - -C "$sysroot" --wildcards "${files_to_extract[@]}"
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# Fix up absolute symlinks from the system image. This can be removed
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# for FreeBSD 11. (If there's an easy way to make them relative
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# symlinks instead, feel free to change this.)
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set +x
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find "$sysroot" -type l | while read symlink_path; do
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symlink_target=$(readlink "$symlink_path")
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case $symlink_target in
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(/*)
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echo "Fixing symlink ${symlink_path} -> ${sysroot}${symlink_target}" >&2
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ln -nfs "${sysroot}${symlink_target}" "${symlink_path}" ;;
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esac
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done
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set -x
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# Clang can do cross-builds out of the box, if we give it the right
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# flags. (The local binutils seem to work, but they set the ELF
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# header "OS/ABI" (EI_OSABI) field to SysV rather than FreeBSD, so
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# there might be other problems.)
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#
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# The --target option is last because the cross-build of LLVM uses
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# --target without an OS version ("-freebsd" vs. "-freebsd10"). This
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# makes Clang default to libstdc++ (which no longer exists), and also
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# controls other features, like GNU-style symbol table hashing and
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# anything predicated on the version number in the __FreeBSD__
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# preprocessor macro.
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for tool in clang clang++; do
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tool_path=/usr/local/bin/${triple}-${tool}
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cat > "$tool_path" <<EOF
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#!/bin/sh
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exec $tool --sysroot=$sysroot --prefix=${sysroot}/bin "\$@" --target=$triple
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EOF
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chmod +x "$tool_path"
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done
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