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478 lines
17 KiB
478 lines
17 KiB
#!/usr/bin/env bash
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export LC_ALL=C
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set -e -o pipefail
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# Source the common prelude, which:
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# 1. Checks if we're at the top directory of the Bitcoin Core repository
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# 2. Defines a few common functions and variables
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#
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# shellcheck source=libexec/prelude.bash
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source "$(dirname "${BASH_SOURCE[0]}")/libexec/prelude.bash"
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###################
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## SANITY CHECKS ##
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###################
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################
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# Required non-builtin commands should be invocable
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################
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check_tools cat mkdir make getent curl git guix
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################
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# GUIX_BUILD_OPTIONS should be empty
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################
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#
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# GUIX_BUILD_OPTIONS is an environment variable recognized by guix commands that
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# can perform builds. This seems like what we want instead of
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# ADDITIONAL_GUIX_COMMON_FLAGS, but the value of GUIX_BUILD_OPTIONS is actually
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# _appended_ to normal command-line options. Meaning that they will take
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# precedence over the command-specific ADDITIONAL_GUIX_<CMD>_FLAGS.
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#
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# This seems like a poor user experience. Thus we check for GUIX_BUILD_OPTIONS's
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# existence here and direct users of this script to use our (more flexible)
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# custom environment variables.
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if [ -n "$GUIX_BUILD_OPTIONS" ]; then
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cat << EOF
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Error: Environment variable GUIX_BUILD_OPTIONS is not empty:
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'$GUIX_BUILD_OPTIONS'
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Unfortunately this script is incompatible with GUIX_BUILD_OPTIONS, please unset
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GUIX_BUILD_OPTIONS and use ADDITIONAL_GUIX_COMMON_FLAGS to set build options
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across guix commands or ADDITIONAL_GUIX_<CMD>_FLAGS to set build options for a
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specific guix command.
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See contrib/guix/README.md for more details.
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EOF
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exit 1
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fi
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################
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# The git worktree should not be dirty
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################
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if ! git diff-index --quiet HEAD -- && [ -z "$FORCE_DIRTY_WORKTREE" ]; then
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cat << EOF
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ERR: The current git worktree is dirty, which may lead to broken builds.
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Aborting...
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Hint: To make your git worktree clean, You may want to:
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1. Commit your changes,
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2. Stash your changes, or
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3. Set the 'FORCE_DIRTY_WORKTREE' environment variable if you insist on
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using a dirty worktree
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EOF
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exit 1
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fi
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mkdir -p "$VERSION_BASE"
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################
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# Build directories should not exist
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################
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# Default to building for all supported HOSTs (overridable by environment)
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export HOSTS="${HOSTS:-x86_64-linux-gnu arm-linux-gnueabihf aarch64-linux-gnu riscv64-linux-gnu powerpc64-linux-gnu powerpc64le-linux-gnu
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x86_64-w64-mingw32
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x86_64-apple-darwin}"
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# Usage: distsrc_for_host HOST
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#
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# HOST: The current platform triple we're building for
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#
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distsrc_for_host() {
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echo "${DISTSRC_BASE}/distsrc-${VERSION}-${1}"
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}
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# Accumulate a list of build directories that already exist...
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hosts_distsrc_exists=""
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for host in $HOSTS; do
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if [ -e "$(distsrc_for_host "$host")" ]; then
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hosts_distsrc_exists+=" ${host}"
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fi
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done
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if [ -n "$hosts_distsrc_exists" ]; then
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# ...so that we can print them out nicely in an error message
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cat << EOF
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ERR: Build directories for this commit already exist for the following platform
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triples you're attempting to build, probably because of previous builds.
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Please remove, or otherwise deal with them prior to starting another build.
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Aborting...
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Hint: To blow everything away, you may want to use:
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$ ./contrib/guix/guix-clean
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Specifically, this will remove all files without an entry in the index,
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excluding the SDK directory, the depends download cache, the depends built
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packages cache, the garbage collector roots for Guix environments, and the
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output directory.
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EOF
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for host in $hosts_distsrc_exists; do
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echo " ${host} '$(distsrc_for_host "$host")'"
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done
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exit 1
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else
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mkdir -p "$DISTSRC_BASE"
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fi
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################
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# When building for darwin, the macOS SDK should exists
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################
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for host in $HOSTS; do
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case "$host" in
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*darwin*)
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OSX_SDK="$(make -C "${PWD}/depends" --no-print-directory HOST="$host" print-OSX_SDK | sed 's@^[^=]\+=@@g')"
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if [ -e "$OSX_SDK" ]; then
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echo "Found macOS SDK at '${OSX_SDK}', using..."
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else
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echo "macOS SDK does not exist at '${OSX_SDK}', please place the extracted, untarred SDK there to perform darwin builds, exiting..."
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exit 1
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fi
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;;
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esac
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done
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################
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# VERSION_BASE should have enough space
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################
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avail_KiB="$(df -Pk "$VERSION_BASE" | sed 1d | tr -s ' ' | cut -d' ' -f4)"
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total_required_KiB=0
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for host in $HOSTS; do
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case "$host" in
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*darwin*) required_KiB=440000 ;;
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*mingw*) required_KiB=7600000 ;;
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*) required_KiB=6400000 ;;
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esac
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total_required_KiB=$((total_required_KiB+required_KiB))
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done
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if (( total_required_KiB > avail_KiB )); then
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total_required_GiB=$((total_required_KiB / 1048576))
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avail_GiB=$((avail_KiB / 1048576))
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echo "Performing a Bitcoin Core Guix build for the selected HOSTS requires ${total_required_GiB} GiB, however, only ${avail_GiB} GiB is available. Please free up some disk space before performing the build."
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exit 1
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fi
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################
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# Check that we can connect to the guix-daemon
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################
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cat << EOF
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Checking that we can connect to the guix-daemon...
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Hint: If this hangs, you may want to try turning your guix-daemon off and on
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again.
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EOF
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if ! guix gc --list-failures > /dev/null; then
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cat << EOF
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ERR: Failed to connect to the guix-daemon, please ensure that one is running and
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reachable.
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EOF
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exit 1
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fi
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# Developer note: we could use `guix repl` for this check and run:
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#
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# (import (guix store)) (close-connection (open-connection))
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#
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# However, the internal API is likely to change more than the CLI invocation
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################
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# Services database must have basic entries
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################
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if ! getent services http https ftp > /dev/null 2>&1; then
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cat << EOF
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ERR: Your system's C library can not find service database entries for at least
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one of the following services: http, https, ftp.
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Hint: Most likely, /etc/services does not exist yet (common for docker images
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and minimal distros), or you don't have permissions to access it.
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If /etc/services does not exist yet, you may want to install the
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appropriate package for your distro which provides it.
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On Debian/Ubuntu: netbase
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On Arch Linux: iana-etc
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For more information, see: getent(1), services(5)
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EOF
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fi
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#########
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# SETUP #
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#########
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# Determine the maximum number of jobs to run simultaneously (overridable by
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# environment)
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JOBS="${JOBS:-$(nproc)}"
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# Usage: host_to_commonname HOST
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#
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# HOST: The current platform triple we're building for
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#
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host_to_commonname() {
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case "$1" in
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*darwin*) echo osx ;;
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*mingw*) echo win ;;
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*linux*) echo linux ;;
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*) exit 1 ;;
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esac
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}
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# Determine the reference time used for determinism (overridable by environment)
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SOURCE_DATE_EPOCH="${SOURCE_DATE_EPOCH:-$(git -c log.showSignature=false log --format=%at -1)}"
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# Execute "$@" in a pinned, possibly older version of Guix, for reproducibility
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# across time.
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time-machine() {
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# shellcheck disable=SC2086
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guix time-machine --url=https://git.savannah.gnu.org/git/guix.git \
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--commit=6ba510d76d6847065be725e958718002f3b13c7a \
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--cores="$JOBS" \
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--keep-failed \
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--fallback \
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${SUBSTITUTE_URLS:+--substitute-urls="$SUBSTITUTE_URLS"} \
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${ADDITIONAL_GUIX_COMMON_FLAGS} ${ADDITIONAL_GUIX_TIMEMACHINE_FLAGS} \
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-- "$@"
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}
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# Precious directories are those which should not be cleaned between successive
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# guix builds
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depends_precious_dir_names='SOURCES_PATH BASE_CACHE SDK_PATH'
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precious_dir_names="${depends_precious_dir_names} OUTDIR_BASE PROFILES_BASE"
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# Usage: contains IFS-SEPARATED-LIST ITEM
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contains() {
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for i in ${1}; do
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if [ "$i" = "${2}" ]; then
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return 0 # Found!
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fi
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done
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return 1
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}
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# If the user explicitly specified a precious directory, create it so we
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# can map it into the container
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for precious_dir_name in $precious_dir_names; do
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precious_dir_path="${!precious_dir_name}"
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if [ -n "$precious_dir_path" ]; then
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if [ ! -e "$precious_dir_path" ]; then
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mkdir -p "$precious_dir_path"
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elif [ -L "$precious_dir_path" ]; then
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echo "ERR: ${precious_dir_name} cannot be a symbolic link"
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exit 1
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elif [ ! -d "$precious_dir_path" ]; then
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echo "ERR: ${precious_dir_name} must be a directory"
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exit 1
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fi
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fi
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done
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mkdir -p "$VAR_BASE"
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# Record the _effective_ values of precious directories such that guix-clean can
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# avoid clobbering them if appropriate.
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#
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# shellcheck disable=SC2046,SC2086
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{
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# Get depends precious dir definitions from depends
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make -C "${PWD}/depends" \
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--no-print-directory \
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-- $(printf "print-%s\n" $depends_precious_dir_names)
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# Get remaining precious dir definitions from the environment
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for precious_dir_name in $precious_dir_names; do
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precious_dir_path="${!precious_dir_name}"
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if ! contains "$depends_precious_dir_names" "$precious_dir_name"; then
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echo "${precious_dir_name}=${precious_dir_path}"
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fi
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done
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} > "${VAR_BASE}/precious_dirs"
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# Make sure an output directory exists for our builds
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OUTDIR_BASE="${OUTDIR_BASE:-${VERSION_BASE}/output}"
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mkdir -p "$OUTDIR_BASE"
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# Download the depends sources now as we won't have internet access in the build
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# container
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for host in $HOSTS; do
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make -C "${PWD}/depends" -j"$JOBS" download-"$(host_to_commonname "$host")" ${V:+V=1} ${SOURCES_PATH:+SOURCES_PATH="$SOURCES_PATH"}
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done
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# Usage: outdir_for_host HOST SUFFIX
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#
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# HOST: The current platform triple we're building for
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#
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outdir_for_host() {
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echo "${OUTDIR_BASE}/${1}${2:+-${2}}"
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}
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# Usage: profiledir_for_host HOST SUFFIX
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#
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# HOST: The current platform triple we're building for
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#
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profiledir_for_host() {
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echo "${PROFILES_BASE}/${1}${2:+-${2}}"
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}
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#########
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# BUILD #
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#########
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# Function to be called when building for host ${1} and the user interrupts the
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# build
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int_trap() {
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cat << EOF
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** INT received while building ${1}, you may want to clean up the relevant
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work directories (e.g. distsrc-*) before rebuilding
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Hint: To blow everything away, you may want to use:
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$ ./contrib/guix/guix-clean
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Specifically, this will remove all files without an entry in the index,
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excluding the SDK directory, the depends download cache, the depends built
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packages cache, the garbage collector roots for Guix environments, and the
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output directory.
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EOF
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}
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# Deterministically build Bitcoin Core
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# shellcheck disable=SC2153
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for host in $HOSTS; do
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# Display proper warning when the user interrupts the build
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trap 'int_trap ${host}' INT
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(
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# Required for 'contrib/guix/manifest.scm' to output the right manifest
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# for the particular $HOST we're building for
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export HOST="$host"
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# shellcheck disable=SC2030
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cat << EOF
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INFO: Building ${VERSION:?not set} for platform triple ${HOST:?not set}:
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...using reference timestamp: ${SOURCE_DATE_EPOCH:?not set}
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...running at most ${JOBS:?not set} jobs
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...from worktree directory: '${PWD}'
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...bind-mounted in container to: '/bitcoin'
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...in build directory: '$(distsrc_for_host "$HOST")'
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...bind-mounted in container to: '$(DISTSRC_BASE=/distsrc-base && distsrc_for_host "$HOST")'
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...outputting in: '$(outdir_for_host "$HOST")'
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...bind-mounted in container to: '$(OUTDIR_BASE=/outdir-base && outdir_for_host "$HOST")'
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EOF
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# Run the build script 'contrib/guix/libexec/build.sh' in the build
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# container specified by 'contrib/guix/manifest.scm'.
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#
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# Explanation of `guix environment` flags:
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#
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# --container run command within an isolated container
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#
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# Running in an isolated container minimizes build-time differences
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# between machines and improves reproducibility
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#
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# --pure unset existing environment variables
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#
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# Same rationale as --container
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#
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# --no-cwd do not share current working directory with an
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# isolated container
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#
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# When --container is specified, the default behavior is to share
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# the current working directory with the isolated container at the
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# same exact path (e.g. mapping '/home/satoshi/bitcoin/' to
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# '/home/satoshi/bitcoin/'). This means that the $PWD inside the
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# container becomes a source of irreproducibility. --no-cwd disables
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# this behaviour.
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#
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# --share=SPEC for containers, share writable host file system
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# according to SPEC
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#
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# --share="$PWD"=/bitcoin
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#
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# maps our current working directory to /bitcoin
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# inside the isolated container, which we later cd
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# into.
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#
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# While we don't want to map our current working directory to the
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# same exact path (as this introduces irreproducibility), we do want
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# it to be at a _fixed_ path _somewhere_ inside the isolated
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# container so that we have something to build. '/bitcoin' was
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# chosen arbitrarily.
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#
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# ${SOURCES_PATH:+--share="$SOURCES_PATH"}
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#
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# make the downloaded depends sources path available
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# inside the isolated container
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#
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# The isolated container has no network access as it's in a
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# different network namespace from the main machine, so we have to
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# make the downloaded depends sources available to it. The sources
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# should have been downloaded prior to this invocation.
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#
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# --keep-failed keep build tree of failed builds
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#
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# When builds of the Guix environment itself (not Bitcoin Core)
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# fail, it is useful for the build tree to be kept for debugging
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# purposes.
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#
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# ${SUBSTITUTE_URLS:+--substitute-urls="$SUBSTITUTE_URLS"}
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#
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# fetch substitute from SUBSTITUTE_URLS if they are
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# authorized
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#
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# Depending on the user's security model, it may be desirable to use
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# substitutes (pre-built packages) from servers that the user trusts.
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# Please read the README.md in the same directory as this file for
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# more information.
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#
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# shellcheck disable=SC2086,SC2031
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time-machine environment --manifest="${PWD}/contrib/guix/manifest.scm" \
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--container \
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--pure \
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--no-cwd \
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--share="$PWD"=/bitcoin \
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--share="$DISTSRC_BASE"=/distsrc-base \
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--share="$OUTDIR_BASE"=/outdir-base \
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--expose="$(git rev-parse --git-common-dir)" \
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${SOURCES_PATH:+--share="$SOURCES_PATH"} \
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${BASE_CACHE:+--share="$BASE_CACHE"} \
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${SDK_PATH:+--share="$SDK_PATH"} \
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--cores="$JOBS" \
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--keep-failed \
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--fallback \
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--link-profile \
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--root="$(profiledir_for_host "${HOST}")" \
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${SUBSTITUTE_URLS:+--substitute-urls="$SUBSTITUTE_URLS"} \
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${ADDITIONAL_GUIX_COMMON_FLAGS} ${ADDITIONAL_GUIX_ENVIRONMENT_FLAGS} \
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-- env HOST="$host" \
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DISTNAME="$DISTNAME" \
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JOBS="$JOBS" \
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SOURCE_DATE_EPOCH="${SOURCE_DATE_EPOCH:?unable to determine value}" \
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${V:+V=1} \
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${SOURCES_PATH:+SOURCES_PATH="$SOURCES_PATH"} \
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${BASE_CACHE:+BASE_CACHE="$BASE_CACHE"} \
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${SDK_PATH:+SDK_PATH="$SDK_PATH"} \
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DISTSRC="$(DISTSRC_BASE=/distsrc-base && distsrc_for_host "$HOST")" \
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OUTDIR="$(OUTDIR_BASE=/outdir-base && outdir_for_host "$HOST")" \
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DIST_ARCHIVE_BASE=/outdir-base/dist-archive \
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bash -c "cd /bitcoin && bash contrib/guix/libexec/build.sh"
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)
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done
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