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59f0d218 FF |
1 | #!/usr/bin/env python3 |
2 | # buildorder.py - script to generate a build order respecting package dependencies | |
3 | ||
4 | import os, sys | |
5 | ||
6 | def die(msg): | |
7 | print('ERROR: ' + msg) | |
8 | sys.exit(1) | |
9 | ||
0c6bde0a FF |
10 | if len(sys.argv) != 1: die('buildorder.py takes no arguments') |
11 | packages_dir = 'packages' | |
59f0d218 FF |
12 | |
13 | class DebianPackage: | |
14 | def __init__(self, name): | |
15 | self.name = name | |
16 | self.remaining_dependencies = set() # String | |
17 | self.sub_packages = set() # String | |
18 | self.prerequisite_for = set() # Packages that needs this package | |
19 | ||
20 | all_packages = [] # List of all DebianPackage:s | |
21 | packages_map = {} # Mapping from package name to DebianPackage (if subpackage, mapping from subpackage name to parent package) | |
22 | ||
23 | for subdir_name in sorted(os.listdir(packages_dir)): | |
24 | subdir_path = packages_dir + '/' + subdir_name | |
25 | if os.path.exists(subdir_path + '/BROKEN.txt'): continue | |
26 | build_sh_path = subdir_path + '/build.sh' | |
27 | ||
28 | this_package = DebianPackage(subdir_name) | |
29 | all_packages.append(this_package) | |
30 | packages_map[this_package.name] = this_package | |
31 | ||
32 | if not os.path.isfile(build_sh_path): die('The directory ' + subdir_name + ' does not contain build.sh') | |
33 | with open(build_sh_path) as build_sh_file: | |
34 | for line in build_sh_file: | |
35 | if line.startswith('TERMUX_PKG_DEPENDS='): | |
36 | deps_comma_separated = line[(line.index('=')+2):(len(line)-2)] | |
37 | for dep in deps_comma_separated.split(','): | |
38 | dep = dep.strip() | |
fc28d8f4 | 39 | if not dep.endswith('libandroid-support-dev'): this_package.remaining_dependencies.add(dep) |
59f0d218 FF |
40 | for file_in_subdir_name in sorted(os.listdir(subdir_path)): |
41 | if file_in_subdir_name.endswith('.subpackage.sh'): | |
42 | subpackage_name = file_in_subdir_name[0:-len(".subpackage.sh"):] | |
43 | this_package.sub_packages.add(subpackage_name) | |
44 | packages_map[subpackage_name] = this_package | |
45 | with open(subdir_path + '/' + file_in_subdir_name) as subpackage_sh_file: | |
46 | for line in subpackage_sh_file: | |
47 | if line.startswith('TERMUX_SUBPKG_DEPENDS='): | |
48 | deps_comma_separated = line[(line.index('=')+2):(len(line)-2)] | |
49 | for dep in deps_comma_separated.split(','): | |
50 | dep = dep.strip() | |
51 | this_package.remaining_dependencies.add(dep) | |
52 | this_package.remaining_dependencies.discard(this_package.name) # Do not depend on itself | |
53 | this_package.remaining_dependencies.difference_update(this_package.sub_packages) # Do not depend on any sub package | |
54 | ||
55 | for package in all_packages: | |
56 | for remaining in package.remaining_dependencies: | |
57 | if not remaining in packages_map: die('Package ' + package.name + ' depends on non-existing package "' + remaining + '"') | |
58 | packages_map[remaining].prerequisite_for.add(package) | |
59 | ||
60 | # List of all DebianPackage:s without dependencies | |
61 | packages_without_deps = [p for p in all_packages if not p.remaining_dependencies] | |
62 | if not packages_without_deps: die('No package without dependency - where to start?') | |
63 | ||
64 | # Sort alphabetically, but with libandroid-support first (since dependency on libandroid-support | |
65 | # does not need to be declared explicitly, so anything might in theory depend on it to build): | |
66 | packages_without_deps.sort(key=lambda p: 'aaaa' if p.name == 'libandroid-support' else p.name, reverse=True) | |
67 | ||
68 | # Topological sorting | |
69 | build_order = [] | |
70 | while packages_without_deps: | |
71 | pkg = packages_without_deps.pop() | |
72 | build_order.append(pkg) | |
73 | for other_package in pkg.prerequisite_for: | |
74 | other_package.remaining_dependencies.discard(pkg.name) # Remove this package | |
75 | other_package.remaining_dependencies.difference_update(pkg.sub_packages) # .. and all its subpackages | |
76 | if not other_package.remaining_dependencies: | |
77 | # Check if the other package is ready to build now | |
78 | packages_without_deps.append(other_package) | |
79 | ||
80 | if len(all_packages) != len(build_order): | |
81 | print("ERROR: Cycle exists. Remaining: "); | |
82 | for pkg in all_packages: | |
83 | if pkg not in build_order: print(pkg.name) | |
84 | sys.exit(1) | |
85 | ||
86 | for pkg in build_order: print(pkg.name) | |
87 |