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- #
- # SPDX-License-Identifier: GPL-2.0-only
- #
- import os
- import subprocess
- import bb
- 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):
- if not "git://" in d.getVar('SRC_URI'):
- return None
- gitpath = find_git_folder(d, sourcedir)
- if not gitpath:
- return None
- # Check that the repository has a valid HEAD; it may not if subdir is used
- # in SRC_URI
- p = subprocess.run(['git', '--git-dir', gitpath, 'rev-parse', 'HEAD'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
- if p.returncode != 0:
- bb.debug(1, "%s does not have a valid HEAD: %s" % (gitpath, p.stdout.decode('utf-8')))
- return None
- bb.debug(1, "git repository: %s" % gitpath)
- p = subprocess.run(['git', '--git-dir', gitpath, 'log', '-1', '--pretty=%ct'], check=True, stdout=subprocess.PIPE)
- return int(p.stdout.decode('utf-8'))
- 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
- def get_source_date_epoch(d, sourcedir):
- return (
- 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
- )
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