blob: 809bdf9d35f8447f710c231b983d6897f43f8760 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
#!/usr/bin/env python3
"""
Usage: find-deps.py <binary> [<binary> ...]
Finds (pacman/ALPM) dependencies for a binary or set of binaries based
on dynamically linked libraries.
"""
import sys
import subprocess
import re
def subprocess_get_lines(args, fail_okay=False):
try:
output = subprocess.check_output(args)
except subprocess.CalledProcessError as e:
if fail_okay:
output = e.output
else:
raise
return output.decode().splitlines()
# Get the filenames of the libs we need
ldd_output = subprocess_get_lines(['ldd'] + sys.argv[1:])
regex = re.compile(r' => (.*) \(0x[0-9a-f]+\)$')
libs = set(match.group(1) for match in map(regex.search, ldd_output) if match)
# Figure out which packages own them
deps = set(subprocess_get_lines(
['pacman', '--query', '--owns', '--quiet'] + list(libs),
fail_okay=True
))
# fakeroot will be linked when building with makepkg, but isn't really needed
deps.discard('fakeroot')
# Remove redundant dependencies
needed = set(deps)
for pkg in deps:
if pkg not in needed:
continue # this subtree has already been pruned
redundant = subprocess_get_lines(
['pactree', '--unique', pkg]
)[1:] # first line is pkg itself
needed.difference_update(redundant)
print(' '.join(sorted(needed)))
|