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Diffstat (limited to 'meta/classes/reproducible_build.bbclass')
| -rw-r--r-- | meta/classes/reproducible_build.bbclass | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/meta/classes/reproducible_build.bbclass b/meta/classes/reproducible_build.bbclass deleted file mode 100644 index 8da40f656a..0000000000 --- a/meta/classes/reproducible_build.bbclass +++ /dev/null @@ -1,202 +0,0 @@ -# reproducible_build.bbclass -# -# Sets SOURCE_DATE_EPOCH in each component's build environment. -# Upstream components (generally) respect this environment variable, -# using it in place of the "current" date and time. -# See https://reproducible-builds.org/specs/source-date-epoch/ -# -# After sources are unpacked but before they are patched, we set a reproducible value for SOURCE_DATE_EPOCH. -# This value should be reproducible for anyone who builds the same revision from the same sources. -# -# There are 4 ways we determine SOURCE_DATE_EPOCH: -# -# 1. Use the value from __source_date_epoch.txt file if this file exists. -# This file was most likely created in the previous build by one of the following methods 2,3,4. -# Alternatively, it can be provided by a recipe via SRC_URI. -# -# If the file does not exist: -# -# 2. If there is a git checkout, use the last git commit timestamp. -# Git does not preserve file timestamps on checkout. -# -# 3. Use the mtime of "known" files such as NEWS, CHANGLELOG, ... -# This works for well-kept repositories distributed via tarball. -# -# 4. Use the modification time of the youngest file in the source tree, if there is one. -# This will be the newest file from the distribution tarball, if any. -# -# 5. Fall back to a fixed timestamp. -# -# Once the value of SOURCE_DATE_EPOCH is determined, it is stored in the recipe's SDE_FILE. -# If none of these mechanisms are suitable, replace the do_deploy_source_date_epoch task -# with recipe-specific functionality to write the appropriate SOURCE_DATE_EPOCH into the SDE_FILE. -# -# If this file is found by other tasks, the value is exported in the SOURCE_DATE_EPOCH variable. -# SOURCE_DATE_EPOCH is set for all tasks that might use it (do_configure, do_compile, do_package, ...) - -BUILD_REPRODUCIBLE_BINARIES ??= '1' -inherit ${@oe.utils.ifelse(d.getVar('BUILD_REPRODUCIBLE_BINARIES') == '1', 'reproducible_build_simple', '')} - -SDE_DIR ="${WORKDIR}/source-date-epoch" -SDE_FILE = "${SDE_DIR}/__source_date_epoch.txt" -SDE_DEPLOYDIR = "${WORKDIR}/deploy-source-date-epoch" - -SSTATETASKS += "do_deploy_source_date_epoch" - -do_deploy_source_date_epoch () { - mkdir -p ${SDE_DEPLOYDIR} - if [ -e ${SDE_FILE} ]; then - echo "Deploying SDE from ${SDE_FILE} -> ${SDE_DEPLOYDIR}." - cp -p ${SDE_FILE} ${SDE_DEPLOYDIR}/__source_date_epoch.txt - else - echo "${SDE_FILE} not found!" - fi -} - -python do_deploy_source_date_epoch_setscene () { - sstate_setscene(d) - bb.utils.mkdirhier(d.getVar('SDE_DIR')) - sde_file = os.path.join(d.getVar('SDE_DEPLOYDIR'), '__source_date_epoch.txt') - if os.path.exists(sde_file): - target = d.getVar('SDE_FILE') - bb.debug(1, "Moving setscene SDE file %s -> %s" % (sde_file, target)) - os.rename(sde_file, target) - else: - bb.debug(1, "%s not found!" % sde_file) -} - -do_deploy_source_date_epoch[dirs] = "${SDE_DEPLOYDIR}" -do_deploy_source_date_epoch[sstate-plaindirs] = "${SDE_DEPLOYDIR}" -addtask do_deploy_source_date_epoch_setscene -addtask do_deploy_source_date_epoch before do_configure after do_patch - -def get_source_date_epoch_from_known_files(d, sourcedir): - source_date_epoch = None - newest_file = None - known_files = set(["NEWS", "ChangeLog", "Changelog", "CHANGES"]) - for file in known_files: - filepath = os.path.join(sourcedir, file) - if os.path.isfile(filepath): - mtime = int(os.lstat(filepath).st_mtime) - # There may be more than one "known_file" present, if so, use the youngest one - if not source_date_epoch or mtime > source_date_epoch: - source_date_epoch = mtime - newest_file = filepath - if newest_file: - bb.debug(1, "SOURCE_DATE_EPOCH taken from: %s" % newest_file) - return source_date_epoch - -def find_git_folder(d, sourcedir): - # First guess: WORKDIR/git - # This is the default git fetcher unpack path - workdir = d.getVar('WORKDIR') - gitpath = os.path.join(workdir, "git/.git") - if os.path.isdir(gitpath): - return gitpath - - # Second guess: ${S} - gitpath = os.path.join(sourcedir, ".git") - if os.path.isdir(gitpath): - return gitpath - - # Perhaps there was a subpath or destsuffix specified. - # Go looking in the WORKDIR - exclude = set(["build", "image", "license-destdir", "patches", "pseudo", - "recipe-sysroot", "recipe-sysroot-native", "sysroot-destdir", "temp"]) - for root, dirs, files in os.walk(workdir, topdown=True): - dirs[:] = [d for d in dirs if d not in exclude] - if '.git' in dirs: - return root - - bb.warn("Failed to find a git repository in WORKDIR: %s" % workdir) - return None - -def get_source_date_epoch_from_git(d, sourcedir): - source_date_epoch = None - if "git://" in d.getVar('SRC_URI'): - gitpath = find_git_folder(d, sourcedir) - if gitpath: - import subprocess - source_date_epoch = int(subprocess.check_output(['git','log','-1','--pretty=%ct'], cwd=gitpath)) - bb.debug(1, "git repository: %s" % gitpath) - return source_date_epoch - -def get_source_date_epoch_from_youngest_file(d, sourcedir): - if sourcedir == d.getVar('WORKDIR'): - # These sources are almost certainly not from a tarball - return None - - # Do it the hard way: check all files and find the youngest one... - source_date_epoch = None - newest_file = None - for root, dirs, files in os.walk(sourcedir, topdown=True): - files = [f for f in files if not f[0] == '.'] - - for fname in files: - filename = os.path.join(root, fname) - try: - mtime = int(os.lstat(filename).st_mtime) - except ValueError: - mtime = 0 - if not source_date_epoch or mtime > source_date_epoch: - source_date_epoch = mtime - newest_file = filename - - if newest_file: - bb.debug(1, "Newest file found: %s" % newest_file) - return source_date_epoch - -def fixed_source_date_epoch(): - bb.debug(1, "No tarball or git repo found to determine SOURCE_DATE_EPOCH") - return 0 - -python create_source_date_epoch_stamp() { - epochfile = d.getVar('SDE_FILE') - # If it exists we need to regenerate as the sources may have changed - if os.path.isfile(epochfile): - bb.debug(1, "Deleting existing SOURCE_DATE_EPOCH from: %s" % epochfile) - os.remove(epochfile) - - sourcedir = d.getVar('S') - source_date_epoch = ( - get_source_date_epoch_from_git(d, sourcedir) or - get_source_date_epoch_from_known_files(d, sourcedir) or - get_source_date_epoch_from_youngest_file(d, sourcedir) or - fixed_source_date_epoch() # Last resort - ) - - bb.debug(1, "SOURCE_DATE_EPOCH: %d" % source_date_epoch) - bb.utils.mkdirhier(d.getVar('SDE_DIR')) - with open(epochfile, 'w') as f: - f.write(str(source_date_epoch)) -} - -def get_source_date_epoch_value(d): - cached = d.getVar('__CACHED_SOURCE_DATE_EPOCH') - if cached: - return cached - - epochfile = d.getVar('SDE_FILE') - source_date_epoch = 0 - if os.path.isfile(epochfile): - with open(epochfile, 'r') as f: - s = f.read() - try: - source_date_epoch = int(s) - except ValueError: - bb.warn("SOURCE_DATE_EPOCH value '%s' is invalid. Reverting to 0" % s) - source_date_epoch = 0 - bb.debug(1, "SOURCE_DATE_EPOCH: %d" % source_date_epoch) - else: - bb.debug(1, "Cannot find %s. SOURCE_DATE_EPOCH will default to %d" % (epochfile, source_date_epoch)) - - d.setVar('__CACHED_SOURCE_DATE_EPOCH', str(source_date_epoch)) - return str(source_date_epoch) - -export SOURCE_DATE_EPOCH ?= "${@get_source_date_epoch_value(d)}" -BB_HASHBASE_WHITELIST += "SOURCE_DATE_EPOCH" - -python () { - if d.getVar('BUILD_REPRODUCIBLE_BINARIES') == '1': - d.appendVarFlag("do_unpack", "postfuncs", " create_source_date_epoch_stamp") -} |