388 lines
14 KiB
Python
Executable file
388 lines
14 KiB
Python
Executable file
#!/usr/bin/env python
|
|
# -*- coding: utf-8 -*-
|
|
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
# Copyright (C) 2019-present Team LibreELEC (https://libreelec.tv)
|
|
|
|
from __future__ import print_function
|
|
import sys, os, codecs, json, argparse, re
|
|
|
|
ROOT_PKG = "__root__"
|
|
|
|
class JELOS_Package:
|
|
def __init__(self, name, section):
|
|
self.name = name
|
|
self.section = section
|
|
self.deps = {"bootstrap": [],
|
|
"init": [],
|
|
"host": [],
|
|
"target": []}
|
|
self.wants = []
|
|
self.wantedby = []
|
|
|
|
def __repr__(self):
|
|
s = "%-9s: %s" % ("name", self.name)
|
|
s = "%s\n%-9s: %s" % (s, "section", self.section)
|
|
|
|
for t in self.deps:
|
|
s = "%s\n%-9s: %s" % (s, t, self.deps[t])
|
|
|
|
s = "%s\n%-9s: %s" % (s, "NEEDS", self.wants)
|
|
s = "%s\n%-9s: %s" % (s, "WANTED BY", self.wantedby)
|
|
|
|
return s
|
|
|
|
def addDependencies(self, target, packages):
|
|
for d in " ".join(packages.split()).split():
|
|
self.deps[target].append(d)
|
|
name = d.split(":")[0]
|
|
if name not in self.wants and name != self.name:
|
|
self.wants.append(name)
|
|
|
|
def delDependency(self, target, package):
|
|
if package in self.deps[target]:
|
|
self.deps[target].remove(package)
|
|
name = package.split(":")[0]
|
|
if name in self.wants:
|
|
self.wants.remove(name)
|
|
|
|
def addReference(self, package):
|
|
name = package.split(":")[0]
|
|
if name not in self.wantedby:
|
|
self.wantedby.append(name)
|
|
|
|
def delReference(self, package):
|
|
name = package.split(":")[0]
|
|
if name in self.wantedby:
|
|
self.wantedby.remove(name)
|
|
|
|
def isReferenced(self):
|
|
return False if self.wants == [] else True
|
|
|
|
def isWanted(self):
|
|
return False if self.wantedby == [] else True
|
|
|
|
def references(self, package):
|
|
return package in self.wants
|
|
|
|
# Reference material:
|
|
# https://www.electricmonk.nl/docs/dependency_resolving_algorithm/dependency_resolving_algorithm.html
|
|
class Node:
|
|
def __init__(self, name, target, section):
|
|
self.name = name
|
|
self.target = target
|
|
self.section = section
|
|
self.fqname = "%s:%s" % (name, target)
|
|
self.edges = []
|
|
|
|
def appendEdges(self, node):
|
|
# Add the node itself...
|
|
if node not in self.edges:
|
|
self.edges.append(node)
|
|
# as well as its edges
|
|
for e in node.edges:
|
|
if e not in self.edges:
|
|
self.edges.append(e)
|
|
|
|
# Return True if the dependencies of the specified node are met by this node
|
|
def satisfies(self, node):
|
|
for e in node.edges:
|
|
if e not in self.edges:
|
|
return False
|
|
return True
|
|
|
|
def __repr__(self):
|
|
s = "%-9s: %s" % ("name", self.name)
|
|
s = "%s\n%-9s: %s" % (s, "target", self.target)
|
|
s = "%s\n%-9s: %s" % (s, "fqname", self.fqname)
|
|
s = "%s\n%-9s: %s" % (s, "common", self.commonName())
|
|
s = "%s\n%-9s: %s" % (s, "section", self.section)
|
|
|
|
for e in self.edges:
|
|
s = "%s\nEDGE: %s" % (s, e.fqname)
|
|
|
|
return s
|
|
|
|
def commonName(self):
|
|
return self.name if self.target == "target" else "%s:%s" % (self.name, self.target)
|
|
|
|
def addEdge(self, node):
|
|
self.edges.append(node)
|
|
|
|
def eprint(*args, **kwargs):
|
|
print(*args, file=sys.stderr, **kwargs)
|
|
|
|
# Read a JSON list of all possible packages from stdin
|
|
def loadPackages():
|
|
jdata = json.loads("[%s]" % sys.stdin.read().replace('\n','')[:-1])
|
|
|
|
map = {}
|
|
|
|
# Load "global" packages first
|
|
for pkg in jdata:
|
|
if pkg["hierarchy"] == "global":
|
|
map[pkg["name"]] = initPackage(pkg)
|
|
|
|
# Then the "local" packages, as these will replace any matching "global" packages
|
|
for pkg in jdata:
|
|
if pkg["hierarchy"] == "local":
|
|
map[pkg["name"]] = initPackage(pkg)
|
|
|
|
return map
|
|
|
|
# Create a fully formed JELOS_Package object
|
|
def initPackage(package):
|
|
pkg = JELOS_Package(package["name"], package["section"])
|
|
|
|
for target in ["bootstrap", "init", "host", "target"]:
|
|
pkg.addDependencies(target, package[target])
|
|
|
|
return pkg
|
|
|
|
# Split name:target into components
|
|
def split_package(name):
|
|
parts = name.split(":")
|
|
pn = parts[0]
|
|
pt = parts[1] if len(parts) != 1 else "target"
|
|
return (pn, pt)
|
|
|
|
# Return a list of packages of the specified type
|
|
def get_packages_by_target(target, list):
|
|
newlist = []
|
|
|
|
for p in list:
|
|
(pn, pt) = split_package(p)
|
|
if target in ["target", "init"] and pt in ["target", "init"]:
|
|
newlist.append(p)
|
|
elif target in ["bootstrap", "host"] and pt in ["bootstrap", "host"]:
|
|
newlist.append(p)
|
|
|
|
return newlist
|
|
|
|
# For the specified node iterate over the list of scheduled nodes and return the first
|
|
# position where we could possibly build this node (ie. all dependencies satisfied).
|
|
def findbuildpos(node, list):
|
|
|
|
# Keep a running total of all dependencies as we progress through the list
|
|
alldeps = Node("", "", "")
|
|
|
|
candidate = None
|
|
for n in list:
|
|
alldeps.appendEdges(n)
|
|
if alldeps.satisfies(node):
|
|
if len(n.edges) > len(node.edges):
|
|
if candidate == None:
|
|
candidate = n
|
|
break
|
|
candidate = n
|
|
|
|
return list.index(candidate) + 1 if candidate else -1
|
|
|
|
# Resolve dependencies for a node
|
|
def dep_resolve(node, resolved, unresolved, noreorder):
|
|
unresolved.append(node)
|
|
|
|
for edge in node.edges:
|
|
if edge not in resolved:
|
|
if edge in unresolved:
|
|
raise Exception('Circular reference detected: %s -> %s\nRemove %s from %s package.mk::PKG_DEPENDS_%s' % \
|
|
(node.fqname, edge.commonName(), edge.commonName(), node.name, node.target.upper()))
|
|
dep_resolve(edge, resolved, unresolved, noreorder)
|
|
|
|
if node not in resolved:
|
|
pos = -1 if noreorder else findbuildpos(node, resolved)
|
|
if pos != -1:
|
|
resolved.insert(pos, node)
|
|
else:
|
|
resolved.append(node)
|
|
|
|
unresolved.remove(node)
|
|
|
|
# Return a list of build steps for the trigger packages
|
|
def get_build_steps(args, nodes, trigger_pkgs, built_pkgs):
|
|
resolved = []
|
|
unresolved = []
|
|
|
|
# When building the image the :target packages must be installed.
|
|
#
|
|
# However, if we are not building the image then only build the packages
|
|
# and don't install them as it's likely we will be building discrete add-ons
|
|
# which are installed outside of the image.
|
|
#
|
|
install = True if "image" in args.build else False
|
|
|
|
for pkgname in [x for x in trigger_pkgs if x]:
|
|
if pkgname.find(":") == -1:
|
|
pkgname = "%s:target" % pkgname
|
|
|
|
if pkgname in nodes:
|
|
dep_resolve(nodes[pkgname], resolved, unresolved, args.no_reorder)
|
|
|
|
# Abort if any references remain unresolved
|
|
if unresolved != []:
|
|
eprint("The following dependencies have not been resolved:")
|
|
for dep in unresolved:
|
|
eprint(" %s" % dep)
|
|
raise("Unresolved references")
|
|
|
|
# Output list of resolved dependencies
|
|
for pkg in resolved:
|
|
if pkg.fqname not in built_pkgs:
|
|
built_pkgs.append(pkg.fqname)
|
|
task = "build" if pkg.fqname.endswith(":host") or not install else "install"
|
|
yield(task, pkg.fqname)
|
|
|
|
# Reduce the complete list of packages to a map of those packages that will
|
|
# be needed for the build.
|
|
def processPackages(args, packages, build):
|
|
# Add dummy package to ensure build/install dependencies are not culled
|
|
pkg = {
|
|
"name": ROOT_PKG,
|
|
"section": "virtual",
|
|
"hierarchy": "global",
|
|
"bootstrap": "",
|
|
"init": "",
|
|
"host": " ".join(get_packages_by_target("host", build)),
|
|
"target": " ".join(get_packages_by_target("target", build))
|
|
}
|
|
|
|
packages[pkg["name"]] = initPackage(pkg)
|
|
|
|
# Resolve reverse references that we can use to ignore unreferenced packages
|
|
for pkgname in packages:
|
|
for opkgname in packages:
|
|
opkg = packages[opkgname]
|
|
if opkg.references(pkgname):
|
|
if pkgname in packages:
|
|
packages[pkgname].addReference(opkgname)
|
|
|
|
# Identify unused packages
|
|
while True:
|
|
changed = False
|
|
for pkgname in packages:
|
|
pkg = packages[pkgname]
|
|
if pkg.isWanted():
|
|
for opkgname in pkg.wantedby:
|
|
if opkgname != ROOT_PKG:
|
|
if not packages[opkgname].isWanted():
|
|
pkg.delReference(opkgname)
|
|
changed = True
|
|
if not changed:
|
|
break
|
|
|
|
# Create a new map of "needed" packages
|
|
needed_map = {}
|
|
for pkgname in packages:
|
|
pkg = packages[pkgname]
|
|
if pkg.isWanted() or pkgname == ROOT_PKG:
|
|
needed_map[pkgname] = pkg
|
|
|
|
# Validate package dependency references
|
|
for pkgname in needed_map:
|
|
pkg = needed_map[pkgname]
|
|
for t in pkg.deps:
|
|
for d in pkg.deps[t]:
|
|
if split_package(d)[0] not in needed_map and not args.ignore_invalid:
|
|
msg = 'Invalid package reference: dependency %s in package %s::PKG_DEPENDS_%s is not valid' % (d, pkgname, t.upper())
|
|
if args.warn_invalid:
|
|
eprint("WARNING: %s" % msg)
|
|
else:
|
|
raise Exception(msg)
|
|
|
|
node_map = {}
|
|
|
|
# Convert all packages to target-specific nodes
|
|
for pkgname in needed_map:
|
|
pkg = needed_map[pkgname]
|
|
for target in pkg.deps:
|
|
if pkg.deps[target]:
|
|
node = Node(pkgname, target, pkg.section)
|
|
node_map[node.fqname] = node
|
|
|
|
# Ensure all referenced dependencies exist as a basic node
|
|
for pkgname in needed_map:
|
|
pkg = needed_map[pkgname]
|
|
for target in pkg.deps:
|
|
for dep in pkg.deps[target]:
|
|
dfq = dep if dep.find(":") != -1 else "%s:target" % dep
|
|
if dfq not in node_map:
|
|
(dfq_p, dfq_t) = split_package(dfq)
|
|
if dfq_p in packages:
|
|
dpkg = packages[dfq_p]
|
|
node_map[dfq] = Node(dfq_p, dfq_t, dpkg.section)
|
|
elif not args.ignore_invalid:
|
|
raise Exception("Invalid package! Package %s cannot be found for this PROJECT/DEVICE/ARCH" % dfq_p)
|
|
|
|
# To each target-specific node, add the corresponding
|
|
# target-specific dependency nodes ("edges")
|
|
for name in node_map:
|
|
node = node_map[name]
|
|
if node.name not in needed_map:
|
|
if args.warn_invalid:
|
|
continue
|
|
else:
|
|
raise Exception("Invalid package! Package %s cannot be found for this PROJECT/DEVICE/ARCH" % node.name)
|
|
for dep in needed_map[node.name].deps[node.target]:
|
|
dfq = dep if dep.find(":") != -1 else "%s:target" % dep
|
|
if dfq in node_map:
|
|
node.addEdge(node_map[dfq])
|
|
|
|
return node_map
|
|
|
|
#---------------------------------------------
|
|
parser = argparse.ArgumentParser(description="Generate package dependency list for the requested build/install packages. \
|
|
Package data will be read from stdin in JSON format.", \
|
|
formatter_class=lambda prog: argparse.HelpFormatter(prog,max_help_position=25,width=90))
|
|
|
|
parser.add_argument("-b", "--build", nargs="+", metavar="PACKAGE", required=True, \
|
|
help="Space-separated list of build trigger packages, either for host or target. Required property - specify at least one package.")
|
|
|
|
parser.add_argument("--warn-invalid", action="store_true", \
|
|
help="Warn about invalid/missing dependency packages, perhaps excluded by a PKG_ARCH incompatability. Default is to abort.")
|
|
|
|
parser.add_argument("--no-reorder", action="store_true", default="True", \
|
|
help="Do not resequence steps based on dependencies. This is the default.")
|
|
|
|
parser.add_argument("--reorder", action="store_false", dest="no_reorder", \
|
|
help="Disable --no-reorder and resequence packages to try and reduce stalls etc.")
|
|
|
|
parser.add_argument("--show-wants", action="store_true", \
|
|
help="Output \"wants\" dependencies for each step.")
|
|
|
|
parser.add_argument("--hide-wants", action="store_false", dest="show_wants", default="True", \
|
|
help="Disable --show-wants.")
|
|
|
|
parser.add_argument("--ignore-invalid", action="store_true", \
|
|
help="Ignore invalid packages.")
|
|
|
|
args = parser.parse_args()
|
|
|
|
ALL_PACKAGES = loadPackages()
|
|
|
|
loaded = len(ALL_PACKAGES)
|
|
|
|
REQUIRED_PKGS = processPackages(args, ALL_PACKAGES, args.build)
|
|
|
|
# Output list of packages to build/install
|
|
built_pkgs = []
|
|
steps = []
|
|
|
|
for step in get_build_steps(args, REQUIRED_PKGS, args.build, built_pkgs):
|
|
steps.append(step)
|
|
|
|
eprint("Packages loaded : %d" % loaded)
|
|
eprint("Build trigger(s): %d [%s]" % (len(args.build), " ".join(args.build)))
|
|
eprint("Package steps : %d" % len(steps))
|
|
eprint("")
|
|
|
|
# Output build/install steps
|
|
if args.show_wants:
|
|
for step in steps:
|
|
wants = []
|
|
node = (REQUIRED_PKGS[step[1]])
|
|
for e in node.edges:
|
|
wants.append(e.fqname)
|
|
print("%-7s %-25s (wants: %s)" % (step[0], step[1].replace(":target",""), ", ".join(wants).replace(":target","")))
|
|
else:
|
|
for step in steps:
|
|
print("%-7s %s" % (step[0], step[1].replace(":target","")))
|