blob: f4f58dd952c1a62772219500e08750f1c7656a6c [file] [log] [blame]
Andrew Geisslerb7d28612020-07-24 16:15:54 -05001#
2# SPDX-License-Identifier: GPL-2.0-only
3#
4import os
5import subprocess
6import bb
7
8def get_source_date_epoch_from_known_files(d, sourcedir):
9 source_date_epoch = None
10 newest_file = None
11 known_files = set(["NEWS", "ChangeLog", "Changelog", "CHANGES"])
12 for file in known_files:
13 filepath = os.path.join(sourcedir, file)
14 if os.path.isfile(filepath):
15 mtime = int(os.lstat(filepath).st_mtime)
16 # There may be more than one "known_file" present, if so, use the youngest one
17 if not source_date_epoch or mtime > source_date_epoch:
18 source_date_epoch = mtime
19 newest_file = filepath
20 if newest_file:
21 bb.debug(1, "SOURCE_DATE_EPOCH taken from: %s" % newest_file)
22 return source_date_epoch
23
24def find_git_folder(d, sourcedir):
25 # First guess: WORKDIR/git
26 # This is the default git fetcher unpack path
27 workdir = d.getVar('WORKDIR')
28 gitpath = os.path.join(workdir, "git/.git")
29 if os.path.isdir(gitpath):
30 return gitpath
31
32 # Second guess: ${S}
33 gitpath = os.path.join(sourcedir, ".git")
34 if os.path.isdir(gitpath):
35 return gitpath
36
37 # Perhaps there was a subpath or destsuffix specified.
38 # Go looking in the WORKDIR
39 exclude = set(["build", "image", "license-destdir", "patches", "pseudo",
40 "recipe-sysroot", "recipe-sysroot-native", "sysroot-destdir", "temp"])
41 for root, dirs, files in os.walk(workdir, topdown=True):
42 dirs[:] = [d for d in dirs if d not in exclude]
43 if '.git' in dirs:
44 return root
45
46 bb.warn("Failed to find a git repository in WORKDIR: %s" % workdir)
47 return None
48
49def get_source_date_epoch_from_git(d, sourcedir):
50 if not "git://" in d.getVar('SRC_URI'):
51 return None
52
53 gitpath = find_git_folder(d, sourcedir)
54 if not gitpath:
55 return None
56
57 # Check that the repository has a valid HEAD; it may not if subdir is used
58 # in SRC_URI
59 p = subprocess.run(['git', 'rev-parse', 'HEAD'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT, cwd=gitpath)
60 if p.returncode != 0:
61 bb.debug(1, "%s does not have a valid HEAD: %s" % (gitpath, p.stdout.decode('utf-8')))
62 return None
63
64 bb.debug(1, "git repository: %s" % gitpath)
65 p = subprocess.run(['git','log','-1','--pretty=%ct'], check=True, stdout=subprocess.PIPE, cwd=gitpath)
66 return int(p.stdout.decode('utf-8'))
67
68def get_source_date_epoch_from_youngest_file(d, sourcedir):
69 if sourcedir == d.getVar('WORKDIR'):
70 # These sources are almost certainly not from a tarball
71 return None
72
73 # Do it the hard way: check all files and find the youngest one...
74 source_date_epoch = None
75 newest_file = None
76 for root, dirs, files in os.walk(sourcedir, topdown=True):
77 files = [f for f in files if not f[0] == '.']
78
79 for fname in files:
80 filename = os.path.join(root, fname)
81 try:
82 mtime = int(os.lstat(filename).st_mtime)
83 except ValueError:
84 mtime = 0
85 if not source_date_epoch or mtime > source_date_epoch:
86 source_date_epoch = mtime
87 newest_file = filename
88
89 if newest_file:
90 bb.debug(1, "Newest file found: %s" % newest_file)
91 return source_date_epoch
92
93def fixed_source_date_epoch():
94 bb.debug(1, "No tarball or git repo found to determine SOURCE_DATE_EPOCH")
95 return 0
96
97def get_source_date_epoch(d, sourcedir):
98 return (
99 get_source_date_epoch_from_git(d, sourcedir) or
100 get_source_date_epoch_from_known_files(d, sourcedir) or
101 get_source_date_epoch_from_youngest_file(d, sourcedir) or
102 fixed_source_date_epoch() # Last resort
103 )
104