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Diffstat (limited to 'poky/meta/classes/reproducible_build.bbclass')
| -rw-r--r-- | poky/meta/classes/reproducible_build.bbclass | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/poky/meta/classes/reproducible_build.bbclass b/poky/meta/classes/reproducible_build.bbclass deleted file mode 100644 index 7571c116c8..0000000000 --- a/poky/meta/classes/reproducible_build.bbclass +++ /dev/null @@ -1,147 +0,0 @@ -# reproducible_build.bbclass -# -# Sets the default SOURCE_DATE_EPOCH in each component's build environment. -# The format is number of seconds since the system epoch. -# -# 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/ -# -# The default value of SOURCE_DATE_EPOCH comes from the function -# get_source_date_epoch_value which reads from the SDE_FILE, or if the file -# is not available (or set to 0) will use the fallback of -# SOURCE_DATE_EPOCH_FALLBACK. -# -# The SDE_FILE is normally constructed from the function -# create_source_date_epoch_stamp which is typically added as a postfuncs to -# the do_unpack task. If a recipe does NOT have do_unpack, it should be added -# to a task that runs after the source is available and before the -# do_deploy_source_date_epoch task is executed. -# -# If a recipe wishes to override the default behavior it should set it's own -# SOURCE_DATE_EPOCH or override the do_deploy_source_date_epoch_stamp task -# with recipe-specific functionality to write the appropriate -# SOURCE_DATE_EPOCH into the SDE_FILE. -# -# SOURCE_DATE_EPOCH is intended to be a reproducible value. This value should -# be reproducible for anyone who builds the same revision from the same -# sources. -# -# There are 4 ways the create_source_date_epoch_stamp function determines what -# becomes 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 (SOURCE_DATE_EPOCH_FALLBACK). -# -# Once the value is determined, it is stored in the recipe's SDE_FILE. - -BUILD_REPRODUCIBLE_BINARIES ??= '1' -inherit reproducible_build_simple - -SDE_DIR = "${WORKDIR}/source-date-epoch" -SDE_FILE = "${SDE_DIR}/__source_date_epoch.txt" -SDE_DEPLOYDIR = "${WORKDIR}/deploy-source-date-epoch" - -# Enable compiler warning when the __TIME__, __DATE__ and __TIMESTAMP__ macros are used. -TARGET_CC_ARCH:append:class-target = " -Wdate-time" - -# A SOURCE_DATE_EPOCH of '0' might be misinterpreted as no SDE -export SOURCE_DATE_EPOCH_FALLBACK ??= "1302044400" - -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)) - bb.utils.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 - -python create_source_date_epoch_stamp() { - import oe.reproducible - - epochfile = d.getVar('SDE_FILE') - tmp_file = "%s.new" % epochfile - - source_date_epoch = oe.reproducible.get_source_date_epoch(d, d.getVar('S')) - - bb.debug(1, "SOURCE_DATE_EPOCH: %d" % source_date_epoch) - bb.utils.mkdirhier(d.getVar('SDE_DIR')) - with open(tmp_file, 'w') as f: - f.write(str(source_date_epoch)) - - os.rename(tmp_file, epochfile) -} - -EPOCHTASK = "do_deploy_source_date_epoch" - -# Generate the stamp after do_unpack runs -do_unpack[postfuncs] += "create_source_date_epoch_stamp" - -def get_source_date_epoch_value(d): - epochfile = d.getVar('SDE_FILE') - cached, efile = d.getVar('__CACHED_SOURCE_DATE_EPOCH') or (None, None) - if cached and efile == epochfile: - return cached - - if cached and epochfile != efile: - bb.debug(1, "Epoch file changed from %s to %s" % (efile, epochfile)) - - source_date_epoch = int(d.getVar('SOURCE_DATE_EPOCH_FALLBACK')) - try: - with open(epochfile, 'r') as f: - s = f.read() - try: - source_date_epoch = int(s) - # workaround for old sstate with SDE_FILE content being 0 - use SOURCE_DATE_EPOCH_FALLBACK - if source_date_epoch == 0 : - source_date_epoch = int(d.getVar('SOURCE_DATE_EPOCH_FALLBACK')) - bb.warn("SOURCE_DATE_EPOCH value from sstate '%s' is deprecated/invalid. Reverting to SOURCE_DATE_EPOCH_FALLBACK '%s'" % (s, source_date_epoch)) - except ValueError: - bb.warn("SOURCE_DATE_EPOCH value '%s' is invalid. Reverting to SOURCE_DATE_EPOCH_FALLBACK" % s) - source_date_epoch = int(d.getVar('SOURCE_DATE_EPOCH_FALLBACK')) - bb.debug(1, "SOURCE_DATE_EPOCH: %d" % source_date_epoch) - except FileNotFoundError: - 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), epochfile)) - return str(source_date_epoch) - -export SOURCE_DATE_EPOCH ?= "${@get_source_date_epoch_value(d)}" -BB_HASHBASE_WHITELIST += "SOURCE_DATE_EPOCH" |