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This patch adds the notion of supporting multiple configurations within a single build. To enable it, set a line in local.conf like: BBMULTICONFIG = "configA configB configC" This would tell bitbake that before it parses the base configuration, it should load conf/configA.conf and so on for each different configuration. These would contain lines like: MACHINE = "A" or other variables which can be set which can be built in the same build directory (or change TMPDIR not to conflict). One downside I've already discovered is that if we want to inherit this file right at the start of parsing, the only place you can put the configurations is in "cwd", since BBPATH isn't constructed until the layers are parsed and therefore using it as a preconf file isn't possible unless its located there. Execution of these targets takes the form "bitbake multiconfig:configA:core-image-minimal core-image-sato" so similar to our virtclass approach for native/nativesdk/multilib using BBCLASSEXTEND. Implementation wise, the implication is that instead of tasks being uniquely referenced with "recipename/fn:task" it now needs to be "configuration:recipename:task". We already started using "virtual" filenames for recipes when we implemented BBCLASSEXTEND and this patch adds a new prefix to these, "multiconfig:<configname>:" and hence avoid changes to a large part of the codebase thanks to this. databuilder has an internal array of data stores and uses the right one depending on the supplied virtual filename. That trick allows us to use the existing parsing code including the multithreading mostly unchanged as well as most of the cache code. For recipecache, we end up with a dict of these accessed by multiconfig (mc). taskdata and runqueue can only cope with one recipecache so for taskdata, we pass in each recipecache and have it compute the result and end up with an array of taskdatas. We can only have one runqueue so there extensive changes there. This initial implementation has some drawbacks: a) There are no inter-multi-configuration dependencies as yet b) There are no sstate optimisations. This means if the build uses the same object twice in say two different TMPDIRs, it will either load from an existing sstate cache at the start or build it twice. We can then in due course look at ways in which it would only build it once and then reuse it. This will likely need significant changes to the way sstate currently works to make that possible. (Bitbake rev: 5287991691578825c847bac2368e9b51c0ede3f0) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
106 lines
3.6 KiB
Python
106 lines
3.6 KiB
Python
# tinfoil: a simple wrapper around cooker for bitbake-based command-line utilities
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#
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# Copyright (C) 2012 Intel Corporation
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# Copyright (C) 2011 Mentor Graphics Corporation
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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import logging
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import warnings
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import os
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import sys
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import bb.cache
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import bb.cooker
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import bb.providers
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import bb.utils
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from bb.cooker import state, BBCooker, CookerFeatures
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from bb.cookerdata import CookerConfiguration, ConfigParameters
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import bb.fetch2
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class Tinfoil:
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def __init__(self, output=sys.stdout, tracking=False):
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# Needed to avoid deprecation warnings with python 2.6
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warnings.filterwarnings("ignore", category=DeprecationWarning)
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# Set up logging
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self.logger = logging.getLogger('BitBake')
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self._log_hdlr = logging.StreamHandler(output)
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bb.msg.addDefaultlogFilter(self._log_hdlr)
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format = bb.msg.BBLogFormatter("%(levelname)s: %(message)s")
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if output.isatty():
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format.enable_color()
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self._log_hdlr.setFormatter(format)
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self.logger.addHandler(self._log_hdlr)
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self.config = CookerConfiguration()
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configparams = TinfoilConfigParameters(parse_only=True)
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self.config.setConfigParameters(configparams)
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self.config.setServerRegIdleCallback(self.register_idle_function)
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features = []
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if tracking:
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features.append(CookerFeatures.BASEDATASTORE_TRACKING)
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self.cooker = BBCooker(self.config, features)
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self.config_data = self.cooker.data
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bb.providers.logger.setLevel(logging.ERROR)
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self.cooker_data = None
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def register_idle_function(self, function, data):
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pass
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def parseRecipes(self):
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sys.stderr.write("Parsing recipes..")
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self.logger.setLevel(logging.WARNING)
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try:
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while self.cooker.state in (state.initial, state.parsing):
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self.cooker.updateCache()
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except KeyboardInterrupt:
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self.cooker.shutdown()
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self.cooker.updateCache()
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sys.exit(2)
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self.logger.setLevel(logging.INFO)
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sys.stderr.write("done.\n")
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self.cooker_data = self.cooker.recipecaches['']
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def prepare(self, config_only = False):
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if not self.cooker_data:
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if config_only:
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self.cooker.parseConfiguration()
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self.cooker_data = self.cooker.recipecaches['']
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else:
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self.parseRecipes()
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def shutdown(self):
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self.cooker.shutdown(force=True)
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self.cooker.post_serve()
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self.cooker.unlockBitbake()
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self.logger.removeHandler(self._log_hdlr)
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class TinfoilConfigParameters(ConfigParameters):
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def __init__(self, **options):
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self.initial_options = options
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super(TinfoilConfigParameters, self).__init__()
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def parseCommandLine(self, argv=sys.argv):
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class DummyOptions:
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def __init__(self, initial_options):
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for key, val in initial_options.items():
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setattr(self, key, val)
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return DummyOptions(self.initial_options), None
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