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-rwxr-xr-xscripts/oe-depends-dot181
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diff --git a/scripts/oe-depends-dot b/scripts/oe-depends-dot
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1#!/usr/bin/env python3
2#
3# Copyright (C) 2018 Wind River Systems, Inc.
4#
5# SPDX-License-Identifier: GPL-2.0-only
6#
7
8import os
9import sys
10import argparse
11import logging
12import re
13
14class Dot(object):
15 def __init__(self):
16 parser = argparse.ArgumentParser(
17 description="Analyse task-depends.dot generated by bitbake -g",
18 formatter_class=argparse.RawDescriptionHelpFormatter)
19 parser.add_argument("dotfile",
20 help = "Specify the dotfile", nargs = 1, action='store', default='')
21 parser.add_argument("-k", "--key",
22 help = "Specify the key, e.g., recipe name",
23 action="store", default='')
24 parser.add_argument("-d", "--depends",
25 help = "Print the key's dependencies",
26 action="store_true", default=False)
27 parser.add_argument("-w", "--why",
28 help = "Print why the key is built",
29 action="store_true", default=False)
30 parser.add_argument("-r", "--remove",
31 help = "Remove duplicated dependencies to reduce the size of the dot files."
32 " For example, A->B, B->C, A->C, then A->C can be removed.",
33 action="store_true", default=False)
34
35 parser.epilog = """
36Examples:
37First generate the .dot file:
38 bitbake -g core-image-minimal
39
40To find out why a package is being built:
41 %(prog)s -k <package> -w ./task-depends.dot
42
43To find out what a package depends on:
44 %(prog)s -k <package> -d ./task-depends.dot
45
46Reduce the .dot file packages only, no tasks:
47 %(prog)s -r ./task-depends.dot
48"""
49
50 self.args = parser.parse_args()
51
52 if len(sys.argv) != 3 and len(sys.argv) < 5:
53 print('ERROR: Not enough args, see --help for usage')
54
55 @staticmethod
56 def insert_dep_chain(chain, rdeps, alldeps):
57 """
58 insert elements to chain from rdeps, according to alldeps
59 """
60 # chain should at least contain one element
61 if len(chain) == 0:
62 raise
63
64 inserted_elements = []
65 for rdep in rdeps:
66 if rdep in chain:
67 continue
68 else:
69 for i in range(0, len(chain)-1):
70 if chain[i] in alldeps[rdep] and rdep in alldeps[chain[i+1]]:
71 chain.insert(i+1, rdep)
72 inserted_elements.append(rdep)
73 break
74 if chain[-1] in alldeps[rdep] and rdep not in chain:
75 chain.append(rdep)
76 inserted_elements.append(rdep)
77 return inserted_elements
78
79 @staticmethod
80 def print_dep_chains(key, rdeps, alldeps):
81 rlist = rdeps.copy()
82 chain = []
83 removed_rdeps = [] # hold rdeps removed from rlist
84
85 chain.append(key)
86 while (len(rlist) != 0):
87 # insert chain from rlist
88 inserted_elements = Dot.insert_dep_chain(chain, rlist, alldeps)
89 if not inserted_elements:
90 if chain[-1] in rlist:
91 rlist.remove(chain[-1])
92 removed_rdeps.append(chain[-1])
93 chain.pop()
94 continue
95 else:
96 # insert chain from removed_rdeps
97 Dot.insert_dep_chain(chain, removed_rdeps, alldeps)
98 print(' -> '.join(list(reversed(chain))))
99
100 def main(self):
101 #print(self.args.dotfile[0])
102 # The format is {key: depends}
103 depends = {}
104 with open(self.args.dotfile[0], 'r') as f:
105 for line in f.readlines():
106 if ' -> ' not in line:
107 continue
108 line_no_quotes = line.replace('"', '')
109 m = re.match("(.*) -> (.*)", line_no_quotes)
110 if not m:
111 print('WARNING: Found unexpected line: %s' % line)
112 continue
113 key = m.group(1)
114 if key == "meta-world-pkgdata":
115 continue
116 dep = m.group(2)
117 key = key.split('.')[0]
118 dep = dep.split('.')[0]
119 if key == dep:
120 continue
121 if key in depends:
122 if not key in depends[key]:
123 depends[key].add(dep)
124 else:
125 print('WARNING: Fonud duplicated line: %s' % line)
126 else:
127 depends[key] = set()
128 depends[key].add(dep)
129
130 if self.args.remove:
131 reduced_depends = {}
132 for k, deps in depends.items():
133 child_deps = set()
134 added = set()
135 # Both direct and indirect depends are already in the dict, so
136 # we don't have to do this recursively.
137 for dep in deps:
138 if dep in depends:
139 child_deps |= depends[dep]
140
141 reduced_depends[k] = deps - child_deps
142 outfile= '%s-reduced%s' % (self.args.dotfile[0][:-4], self.args.dotfile[0][-4:])
143 with open(outfile, 'w') as f:
144 print('Saving reduced dot file to %s' % outfile)
145 f.write('digraph depends {\n')
146 for k, v in reduced_depends.items():
147 for dep in v:
148 f.write('"%s" -> "%s"\n' % (k, dep))
149 f.write('}\n')
150 sys.exit(0)
151
152 if self.args.key not in depends:
153 print("ERROR: Can't find key %s in %s" % (self.args.key, self.args.dotfile[0]))
154 sys.exit(1)
155
156 if self.args.depends:
157 if self.args.key in depends:
158 print('Depends: %s' % ' '.join(depends[self.args.key]))
159
160 reverse_deps = []
161 if self.args.why:
162 key_list = [self.args.key]
163 current_key = self.args.key
164 while (len(key_list) != 0):
165 current_key = key_list.pop()
166 for k, v in depends.items():
167 if current_key in v and not k in reverse_deps:
168 reverse_deps.append(k)
169 key_list.append(k)
170 print('Because: %s' % ' '.join(reverse_deps))
171 Dot.print_dep_chains(self.args.key, reverse_deps, depends)
172
173if __name__ == "__main__":
174 try:
175 dot = Dot()
176 ret = dot.main()
177 except Exception as esc:
178 ret = 1
179 import traceback
180 traceback.print_exc()
181 sys.exit(ret)
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2025-12-17 23:40:30 +0000