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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 | ||
8906fc18 | 6 | def die(msg): sys.exit('ERROR: ' + msg) |
59f0d218 | 7 | |
0c6bde0a | 8 | if len(sys.argv) != 1: die('buildorder.py takes no arguments') |
59f0d218 FF |
9 | |
10 | class DebianPackage: | |
11 | def __init__(self, name): | |
12 | self.name = name | |
13 | self.remaining_dependencies = set() # String | |
14 | self.sub_packages = set() # String | |
15 | self.prerequisite_for = set() # Packages that needs this package | |
16 | ||
17 | all_packages = [] # List of all DebianPackage:s | |
18 | packages_map = {} # Mapping from package name to DebianPackage (if subpackage, mapping from subpackage name to parent package) | |
19 | ||
8906fc18 | 20 | packages_dir = 'packages' |
59f0d218 FF |
21 | for subdir_name in sorted(os.listdir(packages_dir)): |
22 | subdir_path = packages_dir + '/' + subdir_name | |
23 | if os.path.exists(subdir_path + '/BROKEN.txt'): continue | |
24 | build_sh_path = subdir_path + '/build.sh' | |
25 | ||
26 | this_package = DebianPackage(subdir_name) | |
27 | all_packages.append(this_package) | |
28 | packages_map[this_package.name] = this_package | |
29 | ||
30 | if not os.path.isfile(build_sh_path): die('The directory ' + subdir_name + ' does not contain build.sh') | |
31 | with open(build_sh_path) as build_sh_file: | |
32 | for line in build_sh_file: | |
33 | if line.startswith('TERMUX_PKG_DEPENDS='): | |
34 | deps_comma_separated = line[(line.index('=')+2):(len(line)-2)] | |
35 | for dep in deps_comma_separated.split(','): | |
36 | dep = dep.strip() | |
fc28d8f4 | 37 | if not dep.endswith('libandroid-support-dev'): this_package.remaining_dependencies.add(dep) |
59f0d218 FF |
38 | for file_in_subdir_name in sorted(os.listdir(subdir_path)): |
39 | if file_in_subdir_name.endswith('.subpackage.sh'): | |
40 | subpackage_name = file_in_subdir_name[0:-len(".subpackage.sh"):] | |
41 | this_package.sub_packages.add(subpackage_name) | |
42 | packages_map[subpackage_name] = this_package | |
43 | with open(subdir_path + '/' + file_in_subdir_name) as subpackage_sh_file: | |
44 | for line in subpackage_sh_file: | |
45 | if line.startswith('TERMUX_SUBPKG_DEPENDS='): | |
46 | deps_comma_separated = line[(line.index('=')+2):(len(line)-2)] | |
47 | for dep in deps_comma_separated.split(','): | |
48 | dep = dep.strip() | |
49 | this_package.remaining_dependencies.add(dep) | |
50 | this_package.remaining_dependencies.discard(this_package.name) # Do not depend on itself | |
51 | this_package.remaining_dependencies.difference_update(this_package.sub_packages) # Do not depend on any sub package | |
52 | ||
53 | for package in all_packages: | |
54 | for remaining in package.remaining_dependencies: | |
55 | if not remaining in packages_map: die('Package ' + package.name + ' depends on non-existing package "' + remaining + '"') | |
56 | packages_map[remaining].prerequisite_for.add(package) | |
57 | ||
58 | # List of all DebianPackage:s without dependencies | |
59 | packages_without_deps = [p for p in all_packages if not p.remaining_dependencies] | |
60 | if not packages_without_deps: die('No package without dependency - where to start?') | |
61 | ||
62 | # Sort alphabetically, but with libandroid-support first (since dependency on libandroid-support | |
63 | # does not need to be declared explicitly, so anything might in theory depend on it to build): | |
64 | packages_without_deps.sort(key=lambda p: 'aaaa' if p.name == 'libandroid-support' else p.name, reverse=True) | |
65 | ||
66 | # Topological sorting | |
67 | build_order = [] | |
68 | while packages_without_deps: | |
69 | pkg = packages_without_deps.pop() | |
70 | build_order.append(pkg) | |
71 | for other_package in pkg.prerequisite_for: | |
72 | other_package.remaining_dependencies.discard(pkg.name) # Remove this package | |
73 | other_package.remaining_dependencies.difference_update(pkg.sub_packages) # .. and all its subpackages | |
74 | if not other_package.remaining_dependencies: | |
75 | # Check if the other package is ready to build now | |
76 | packages_without_deps.append(other_package) | |
77 | ||
78 | if len(all_packages) != len(build_order): | |
79 | print("ERROR: Cycle exists. Remaining: "); | |
80 | for pkg in all_packages: | |
81 | if pkg not in build_order: print(pkg.name) | |
82 | sys.exit(1) | |
83 | ||
84 | for pkg in build_order: print(pkg.name) | |
85 |