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- # ex:ts=4:sw=4:sts=4:et
- # -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
- #
- # Copyright (C) 2003, 2004 Chris Larson
- # Copyright (C) 2003, 2004 Phil Blundell
- # Copyright (C) 2003 - 2005 Michael 'Mickey' Lauer
- # Copyright (C) 2005 Holger Hans Peter Freyther
- # Copyright (C) 2005 ROAD GmbH
- # Copyright (C) 2006 Richard Purdie
- #
- # This program is free software; you can redistribute it and/or modify
- # it under the terms of the GNU General Public License version 2 as
- # published by the Free Software Foundation.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License along
- # with this program; if not, write to the Free Software Foundation, Inc.,
- # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- import os, re
- from bb import data, utils
- import bb
- class NoProvider(Exception):
- """Exception raised when no provider of a build dependency can be found"""
- class NoRProvider(Exception):
- """Exception raised when no provider of a runtime dependency can be found"""
- def sortPriorities(pn, dataCache, pkg_pn = None):
- """
- Reorder pkg_pn by file priority and default preference
- """
- if not pkg_pn:
- pkg_pn = dataCache.pkg_pn
- files = pkg_pn[pn]
- priorities = {}
- for f in files:
- priority = dataCache.bbfile_priority[f]
- preference = dataCache.pkg_dp[f]
- if priority not in priorities:
- priorities[priority] = {}
- if preference not in priorities[priority]:
- priorities[priority][preference] = []
- priorities[priority][preference].append(f)
- pri_list = priorities.keys()
- pri_list.sort(lambda a, b: a - b)
- tmp_pn = []
- for pri in pri_list:
- pref_list = priorities[pri].keys()
- pref_list.sort(lambda a, b: b - a)
- tmp_pref = []
- for pref in pref_list:
- tmp_pref.extend(priorities[pri][pref])
- tmp_pn = [tmp_pref] + tmp_pn
- return tmp_pn
- def findPreferredProvider(pn, cfgData, dataCache, pkg_pn = None, item = None):
- """
- Find the first provider in pkg_pn with a PREFERRED_VERSION set.
- """
- preferred_file = None
- preferred_ver = None
- localdata = data.createCopy(cfgData)
- bb.data.setVar('OVERRIDES', "pn-%s:%s:%s" % (pn, pn, data.getVar('OVERRIDES', localdata)), localdata)
- bb.data.update_data(localdata)
- preferred_v = bb.data.getVar('PREFERRED_VERSION_%s' % pn, localdata, True)
- if preferred_v:
- m = re.match('(\d+:)*(.*)(_.*)*', preferred_v)
- if m:
- if m.group(1):
- preferred_e = int(m.group(1)[:-1])
- else:
- preferred_e = None
- preferred_v = m.group(2)
- if m.group(3):
- preferred_r = m.group(3)[1:]
- else:
- preferred_r = None
- else:
- preferred_e = None
- preferred_r = None
- for file_set in pkg_pn:
- for f in file_set:
- pe,pv,pr = dataCache.pkg_pepvpr[f]
- if preferred_v == pv and (preferred_r == pr or preferred_r == None) and (preferred_e == pe or preferred_e == None):
- preferred_file = f
- preferred_ver = (pe, pv, pr)
- break
- if preferred_file:
- break;
- if preferred_r:
- pv_str = '%s-%s' % (preferred_v, preferred_r)
- else:
- pv_str = preferred_v
- if not (preferred_e is None):
- pv_str = '%s:%s' % (preferred_e, pv_str)
- itemstr = ""
- if item:
- itemstr = " (for item %s)" % item
- if preferred_file is None:
- bb.msg.note(1, bb.msg.domain.Provider, "preferred version %s of %s not available%s" % (pv_str, pn, itemstr))
- else:
- bb.msg.debug(1, bb.msg.domain.Provider, "selecting %s as PREFERRED_VERSION %s of package %s%s" % (preferred_file, pv_str, pn, itemstr))
- return (preferred_ver, preferred_file)
- def findLatestProvider(pn, cfgData, dataCache, file_set):
- """
- Return the highest version of the providers in file_set.
- Take default preferences into account.
- """
- latest = None
- latest_p = 0
- latest_f = None
- for file_name in file_set:
- pe,pv,pr = dataCache.pkg_pepvpr[file_name]
- dp = dataCache.pkg_dp[file_name]
- if (latest is None) or ((latest_p == dp) and (utils.vercmp(latest, (pe, pv, pr)) < 0)) or (dp > latest_p):
- latest = (pe, pv, pr)
- latest_f = file_name
- latest_p = dp
- return (latest, latest_f)
- def findBestProvider(pn, cfgData, dataCache, pkg_pn = None, item = None):
- """
- If there is a PREFERRED_VERSION, find the highest-priority bbfile
- providing that version. If not, find the latest version provided by
- an bbfile in the highest-priority set.
- """
- sortpkg_pn = sortPriorities(pn, dataCache, pkg_pn)
- # Find the highest priority provider with a PREFERRED_VERSION set
- (preferred_ver, preferred_file) = findPreferredProvider(pn, cfgData, dataCache, sortpkg_pn, item)
- # Find the latest version of the highest priority provider
- (latest, latest_f) = findLatestProvider(pn, cfgData, dataCache, sortpkg_pn[0])
- if preferred_file is None:
- preferred_file = latest_f
- preferred_ver = latest
- return (latest, latest_f, preferred_ver, preferred_file)
- def _filterProviders(providers, item, cfgData, dataCache):
- """
- Take a list of providers and filter/reorder according to the
- environment variables and previous build results
- """
- eligible = []
- preferred_versions = {}
- sortpkg_pn = {}
- # The order of providers depends on the order of the files on the disk
- # up to here. Sort pkg_pn to make dependency issues reproducible rather
- # than effectively random.
- providers.sort()
- # Collate providers by PN
- pkg_pn = {}
- for p in providers:
- pn = dataCache.pkg_fn[p]
- if pn not in pkg_pn:
- pkg_pn[pn] = []
- pkg_pn[pn].append(p)
- bb.msg.debug(1, bb.msg.domain.Provider, "providers for %s are: %s" % (item, pkg_pn.keys()))
- # First add PREFERRED_VERSIONS
- for pn in pkg_pn.keys():
- sortpkg_pn[pn] = sortPriorities(pn, dataCache, pkg_pn)
- preferred_versions[pn] = findPreferredProvider(pn, cfgData, dataCache, sortpkg_pn[pn], item)
- if preferred_versions[pn][1]:
- eligible.append(preferred_versions[pn][1])
- # Now add latest verisons
- for pn in pkg_pn.keys():
- if pn in preferred_versions and preferred_versions[pn][1]:
- continue
- preferred_versions[pn] = findLatestProvider(pn, cfgData, dataCache, sortpkg_pn[pn][0])
- eligible.append(preferred_versions[pn][1])
- if len(eligible) == 0:
- bb.msg.error(bb.msg.domain.Provider, "no eligible providers for %s" % item)
- return 0
- # If pn == item, give it a slight default preference
- # This means PREFERRED_PROVIDER_foobar defaults to foobar if available
- for p in providers:
- pn = dataCache.pkg_fn[p]
- if pn != item:
- continue
- (newvers, fn) = preferred_versions[pn]
- if not fn in eligible:
- continue
- eligible.remove(fn)
- eligible = [fn] + eligible
- return eligible
- def filterProviders(providers, item, cfgData, dataCache):
- """
- Take a list of providers and filter/reorder according to the
- environment variables and previous build results
- Takes a "normal" target item
- """
- eligible = _filterProviders(providers, item, cfgData, dataCache)
- prefervar = bb.data.getVar('PREFERRED_PROVIDER_%s' % item, cfgData, 1)
- if prefervar:
- dataCache.preferred[item] = prefervar
- foundUnique = False
- if item in dataCache.preferred:
- for p in eligible:
- pn = dataCache.pkg_fn[p]
- if dataCache.preferred[item] == pn:
- bb.msg.note(2, bb.msg.domain.Provider, "selecting %s to satisfy %s due to PREFERRED_PROVIDERS" % (pn, item))
- eligible.remove(p)
- eligible = [p] + eligible
- foundUnique = True
- break
- bb.msg.debug(1, bb.msg.domain.Provider, "sorted providers for %s are: %s" % (item, eligible))
- return eligible, foundUnique
- def filterProvidersRunTime(providers, item, cfgData, dataCache):
- """
- Take a list of providers and filter/reorder according to the
- environment variables and previous build results
- Takes a "runtime" target item
- """
- eligible = _filterProviders(providers, item, cfgData, dataCache)
- # Should use dataCache.preferred here?
- preferred = []
- preferred_vars = []
- for p in eligible:
- pn = dataCache.pkg_fn[p]
- provides = dataCache.pn_provides[pn]
- for provide in provides:
- prefervar = bb.data.getVar('PREFERRED_PROVIDER_%s' % provide, cfgData, 1)
- if prefervar == pn:
- var = "PREFERRED_PROVIDERS_%s = %s" % (provide, prefervar)
- bb.msg.note(2, bb.msg.domain.Provider, "selecting %s to satisfy runtime %s due to %s" % (pn, item, var))
- preferred_vars.append(var)
- eligible.remove(p)
- eligible = [p] + eligible
- preferred.append(p)
- break
- numberPreferred = len(preferred)
- if numberPreferred > 1:
- bb.msg.error(bb.msg.domain.Provider, "Conflicting PREFERRED_PROVIDERS entries were found which resulted in an attempt to select multiple providers (%s) for runtime dependecy %s\nThe entries resulting in this conflict were: %s" % (preferred, item, preferred_vars))
- bb.msg.debug(1, bb.msg.domain.Provider, "sorted providers for %s are: %s" % (item, eligible))
- return eligible, numberPreferred
- def getRuntimeProviders(dataCache, rdepend):
- """
- Return any providers of runtime dependency
- """
- rproviders = []
- if rdepend in dataCache.rproviders:
- rproviders += dataCache.rproviders[rdepend]
- if rdepend in dataCache.packages:
- rproviders += dataCache.packages[rdepend]
- if rproviders:
- return rproviders
- # Only search dynamic packages if we can't find anything in other variables
- for pattern in dataCache.packages_dynamic:
- pattern = pattern.replace('+', "\+")
- try:
- regexp = re.compile(pattern)
- except:
- bb.msg.error(bb.msg.domain.Provider, "Error parsing re expression: %s" % pattern)
- raise
- if regexp.match(rdepend):
- rproviders += dataCache.packages_dynamic[pattern]
- return rproviders
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