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379 lines
13 KiB
379 lines
13 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 git guix
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################
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# Required env vars should be non-empty
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################
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cmd_usage() {
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cat <<EOF
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Synopsis:
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env DETACHED_SIGS_REPO=<path/to/bitcoin-detached-sigs> \\
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./contrib/guix/guix-codesign
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EOF
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}
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if [ -z "$DETACHED_SIGS_REPO" ]; then
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cmd_usage
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exit 1
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fi
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################
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# GUIX_BUILD_OPTIONS should be empty
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################
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#
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# GUIX_BUILD_OPTIONS is an environment variable recognized by guix commands that
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# can perform builds. This seems like what we want instead of
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# ADDITIONAL_GUIX_COMMON_FLAGS, but the value of GUIX_BUILD_OPTIONS is actually
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# _appended_ to normal command-line options. Meaning that they will take
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# precedence over the command-specific ADDITIONAL_GUIX_<CMD>_FLAGS.
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#
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# This seems like a poor user experience. Thus we check for GUIX_BUILD_OPTIONS's
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# existence here and direct users of this script to use our (more flexible)
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# custom environment variables.
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if [ -n "$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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'$GUIX_BUILD_OPTIONS'
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Unfortunately this script is incompatible with GUIX_BUILD_OPTIONS, please unset
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GUIX_BUILD_OPTIONS and use ADDITIONAL_GUIX_COMMON_FLAGS to set build options
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across guix commands or ADDITIONAL_GUIX_<CMD>_FLAGS to set build options for a
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specific guix command.
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See contrib/guix/README.md for more details.
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EOF
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exit 1
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fi
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################
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# The codesignature git worktree should not be dirty
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################
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if ! git -C "$DETACHED_SIGS_REPO" diff-index --quiet HEAD -- && [ -z "$FORCE_DIRTY_WORKTREE" ]; then
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cat << EOF
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ERR: The DETACHED CODESIGNATURE git worktree is dirty, which may lead to broken builds.
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Aborting...
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Hint: To make your git worktree clean, You may want to:
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1. Commit your changes,
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2. Stash your changes, or
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3. Set the 'FORCE_DIRTY_WORKTREE' environment variable if you insist on
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using a dirty worktree
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EOF
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exit 1
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fi
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################
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# Build directories should not exist
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################
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# Default to building for all supported HOSTs (overridable by environment)
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export HOSTS="${HOSTS:-x86_64-w64-mingw32 x86_64-apple-darwin arm64-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}-codesigned"
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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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# Unsigned tarballs SHOULD exist
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################
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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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unsigned_tarball_for_host() {
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case "$1" in
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*mingw*)
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echo "$(outdir_for_host "$1")/${DISTNAME}-win64-unsigned.tar.gz"
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;;
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*darwin*)
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echo "$(outdir_for_host "$1")/${DISTNAME}-${1}-unsigned.tar.gz"
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;;
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*)
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exit 1
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;;
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esac
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}
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# Accumulate a list of build directories that already exist...
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hosts_unsigned_tarball_missing=""
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for host in $HOSTS; do
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if [ ! -e "$(unsigned_tarball_for_host "$host")" ]; then
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hosts_unsigned_tarball_missing+=" ${host}"
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fi
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done
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if [ -n "$hosts_unsigned_tarball_missing" ]; 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: Unsigned tarballs do not exist
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...
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EOF
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for host in $hosts_unsigned_tarball_missing; do
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echo " ${host} '$(unsigned_tarball_for_host "$host")'"
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done
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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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# 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:-$(nproc)}"
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# Determine the reference time used for determinism (overridable by environment)
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SOURCE_DATE_EPOCH="${SOURCE_DATE_EPOCH:-$(git -c log.showSignature=false log --format=%at -1)}"
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# Make sure an output directory exists for our builds
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OUTDIR_BASE="${OUTDIR_BASE:-${VERSION_BASE}/output}"
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mkdir -p "$OUTDIR_BASE"
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# 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 codesigning for host ${1} and the user interrupts
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# the codesign
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int_trap() {
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cat << EOF
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** INT received while codesigning ${1}, you may want to clean up the relevant
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work directories (e.g. distsrc-*) before recodesigning
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Hint: To blow everything away, you may want to use:
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$ ./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: Codesigning ${VERSION:?not set} for platform triple ${HOST:?not set}:
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...using reference timestamp: ${SOURCE_DATE_EPOCH:?not set}
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...from worktree directory: '${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" codesigned)'
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...bind-mounted in container to: '$(OUTDIR_BASE=/outdir-base && outdir_for_host "$HOST" codesigned)'
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...using detached signatures in: '${DETACHED_SIGS_REPO:?not set}'
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...bind-mounted in container to: '/detached-sigs'
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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 shell` 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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# ${SUBSTITUTE_URLS:+--substitute-urls="$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 shell --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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--share="$DETACHED_SIGS_REPO"=/detached-sigs \
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--expose="$(git rev-parse --git-common-dir)" \
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--expose="$(git -C "$DETACHED_SIGS_REPO" rev-parse --git-common-dir)" \
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${SOURCES_PATH:+--share="$SOURCES_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 "${HOST}" codesigned)" \
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${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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DISTSRC="$(DISTSRC_BASE=/distsrc-base && distsrc_for_host "$HOST")" \
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OUTDIR="$(OUTDIR_BASE=/outdir-base && outdir_for_host "$HOST" codesigned)" \
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DIST_ARCHIVE_BASE=/outdir-base/dist-archive \
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DETACHED_SIGS_REPO=/detached-sigs \
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UNSIGNED_TARBALL="$(OUTDIR_BASE=/outdir-base && unsigned_tarball_for_host "$HOST")" \
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bash -c "cd /bitcoin && bash contrib/guix/libexec/codesign.sh"
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)
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done
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