mirror of
https://gitlab.com/ita1024/waf.git
synced 2024-12-24 18:25:03 +01:00
672 lines
18 KiB
Python
672 lines
18 KiB
Python
#!/usr/bin/env python
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# encoding: utf-8
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# Thomas Nagy, 2005-2010 (ita)
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"""
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Configuration system
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A :py:class:`waflib.Configure.ConfigurationContext` instance is created when ``waf configure`` is called, it is used to:
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* create data dictionaries (ConfigSet instances)
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* store the list of modules to import
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* hold configuration routines such as ``find_program``, etc
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"""
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import os, shlex, sys, time, re, shutil
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from waflib import ConfigSet, Utils, Options, Logs, Context, Build, Errors
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BREAK = 'break'
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"""In case of a configuration error, break"""
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CONTINUE = 'continue'
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"""In case of a configuration error, continue"""
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WAF_CONFIG_LOG = 'config.log'
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"""Name of the configuration log file"""
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autoconfig = False
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"""Execute the configuration automatically"""
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conf_template = '''# project %(app)s configured on %(now)s by
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# waf %(wafver)s (abi %(abi)s, python %(pyver)x on %(systype)s)
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# using %(args)s
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#'''
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class ConfigurationContext(Context.Context):
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'''configures the project'''
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cmd = 'configure'
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error_handlers = []
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"""
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Additional functions to handle configuration errors
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"""
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def __init__(self, **kw):
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super(ConfigurationContext, self).__init__(**kw)
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self.environ = dict(os.environ)
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self.all_envs = {}
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self.top_dir = None
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self.out_dir = None
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self.tools = [] # tools loaded in the configuration, and that will be loaded when building
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self.hash = 0
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self.files = []
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self.tool_cache = []
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self.setenv('')
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def setenv(self, name, env=None):
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"""
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Set a new config set for conf.env. If a config set of that name already exists,
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recall it without modification.
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The name is the filename prefix to save to ``c4che/NAME_cache.py``, and it
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is also used as *variants* by the build commands.
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Though related to variants, whatever kind of data may be stored in the config set::
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def configure(cfg):
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cfg.env.ONE = 1
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cfg.setenv('foo')
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cfg.env.ONE = 2
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def build(bld):
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2 == bld.env_of_name('foo').ONE
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:param name: name of the configuration set
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:type name: string
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:param env: ConfigSet to copy, or an empty ConfigSet is created
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:type env: :py:class:`waflib.ConfigSet.ConfigSet`
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"""
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if name not in self.all_envs or env:
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if not env:
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env = ConfigSet.ConfigSet()
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self.prepare_env(env)
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else:
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env = env.derive()
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self.all_envs[name] = env
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self.variant = name
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def get_env(self):
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"""Getter for the env property"""
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return self.all_envs[self.variant]
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def set_env(self, val):
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"""Setter for the env property"""
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self.all_envs[self.variant] = val
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env = property(get_env, set_env)
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def init_dirs(self):
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"""
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Initialize the project directory and the build directory
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"""
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top = self.top_dir
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if not top:
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top = Options.options.top
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if not top:
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top = getattr(Context.g_module, Context.TOP, None)
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if not top:
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top = self.path.abspath()
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top = os.path.abspath(top)
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self.srcnode = (os.path.isabs(top) and self.root or self.path).find_dir(top)
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assert(self.srcnode)
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out = self.out_dir
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if not out:
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out = Options.options.out
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if not out:
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out = getattr(Context.g_module, Context.OUT, None)
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if not out:
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out = Options.lockfile.replace('.lock-waf_%s_' % sys.platform, '').replace('.lock-waf', '')
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# someone can be messing with symlinks
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out = os.path.realpath(out)
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self.bldnode = (os.path.isabs(out) and self.root or self.path).make_node(out)
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self.bldnode.mkdir()
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if not os.path.isdir(self.bldnode.abspath()):
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conf.fatal('Could not create the build directory %s' % self.bldnode.abspath())
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def execute(self):
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"""
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See :py:func:`waflib.Context.Context.execute`
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"""
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self.init_dirs()
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self.cachedir = self.bldnode.make_node(Build.CACHE_DIR)
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self.cachedir.mkdir()
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path = os.path.join(self.bldnode.abspath(), WAF_CONFIG_LOG)
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self.logger = Logs.make_logger(path, 'cfg')
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app = getattr(Context.g_module, 'APPNAME', '')
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if app:
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ver = getattr(Context.g_module, 'VERSION', '')
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if ver:
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app = "%s (%s)" % (app, ver)
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now = time.ctime()
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pyver = sys.hexversion
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systype = sys.platform
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args = " ".join(sys.argv)
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wafver = Context.WAFVERSION
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abi = Context.ABI
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self.to_log(conf_template % vars())
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self.msg('Setting top to', self.srcnode.abspath())
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self.msg('Setting out to', self.bldnode.abspath())
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if id(self.srcnode) == id(self.bldnode):
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Logs.warn('Setting top == out (remember to use "update_outputs")')
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elif id(self.path) != id(self.srcnode):
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if self.srcnode.is_child_of(self.path):
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Logs.warn('Are you certain that you do not want to set top="." ?')
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super(ConfigurationContext, self).execute()
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self.store()
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Context.top_dir = self.srcnode.abspath()
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Context.out_dir = self.bldnode.abspath()
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# this will write a configure lock so that subsequent builds will
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# consider the current path as the root directory (see prepare_impl).
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# to remove: use 'waf distclean'
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env = ConfigSet.ConfigSet()
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env['argv'] = sys.argv
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env['options'] = Options.options.__dict__
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env.run_dir = Context.run_dir
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env.top_dir = Context.top_dir
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env.out_dir = Context.out_dir
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# conf.hash & conf.files hold wscript files paths and hash
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# (used only by Configure.autoconfig)
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env['hash'] = self.hash
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env['files'] = self.files
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env['environ'] = dict(self.environ)
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if not self.env.NO_LOCK_IN_RUN and not getattr(Options.options, 'no_lock_in_run'):
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env.store(os.path.join(Context.run_dir, Options.lockfile))
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if not self.env.NO_LOCK_IN_TOP and not getattr(Options.options, 'no_lock_in_top'):
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env.store(os.path.join(Context.top_dir, Options.lockfile))
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if not self.env.NO_LOCK_IN_OUT and not getattr(Options.options, 'no_lock_in_out'):
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env.store(os.path.join(Context.out_dir, Options.lockfile))
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def prepare_env(self, env):
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"""
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Insert *PREFIX*, *BINDIR* and *LIBDIR* values into ``env``
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:type env: :py:class:`waflib.ConfigSet.ConfigSet`
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:param env: a ConfigSet, usually ``conf.env``
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"""
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if not env.PREFIX:
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if Options.options.prefix or Utils.is_win32:
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env.PREFIX = os.path.abspath(os.path.expanduser(Options.options.prefix))
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else:
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env.PREFIX = ''
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if not env.BINDIR:
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if Options.options.bindir:
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env.BINDIR = os.path.abspath(os.path.expanduser(Options.options.bindir))
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else:
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env.BINDIR = Utils.subst_vars('${PREFIX}/bin', env)
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if not env.LIBDIR:
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if Options.options.libdir:
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env.LIBDIR = os.path.abspath(os.path.expanduser(Options.options.libdir))
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else:
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env.LIBDIR = Utils.subst_vars('${PREFIX}/lib%s' % Utils.lib64(), env)
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def store(self):
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"""Save the config results into the cache file"""
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n = self.cachedir.make_node('build.config.py')
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n.write('version = 0x%x\ntools = %r\n' % (Context.HEXVERSION, self.tools))
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if not self.all_envs:
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self.fatal('nothing to store in the configuration context!')
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for key in self.all_envs:
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tmpenv = self.all_envs[key]
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tmpenv.store(os.path.join(self.cachedir.abspath(), key + Build.CACHE_SUFFIX))
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def load(self, input, tooldir=None, funs=None, with_sys_path=True):
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"""
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Load Waf tools, which will be imported whenever a build is started.
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:param input: waf tools to import
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:type input: list of string
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:param tooldir: paths for the imports
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:type tooldir: list of string
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:param funs: functions to execute from the waf tools
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:type funs: list of string
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"""
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tools = Utils.to_list(input)
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if tooldir: tooldir = Utils.to_list(tooldir)
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for tool in tools:
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# avoid loading the same tool more than once with the same functions
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# used by composite projects
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mag = (tool, id(self.env), tooldir, funs)
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if mag in self.tool_cache:
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self.to_log('(tool %s is already loaded, skipping)' % tool)
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continue
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self.tool_cache.append(mag)
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module = None
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try:
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module = Context.load_tool(tool, tooldir, ctx=self, with_sys_path=with_sys_path)
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except ImportError as e:
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self.fatal('Could not load the Waf tool %r from %r\n%s' % (tool, sys.path, e))
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except Exception as e:
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self.to_log('imp %r (%r & %r)' % (tool, tooldir, funs))
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self.to_log(Utils.ex_stack())
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raise
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if funs is not None:
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self.eval_rules(funs)
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else:
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func = getattr(module, 'configure', None)
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if func:
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if type(func) is type(Utils.readf): func(self)
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else: self.eval_rules(func)
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self.tools.append({'tool':tool, 'tooldir':tooldir, 'funs':funs})
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def post_recurse(self, node):
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"""
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Records the path and a hash of the scripts visited, see :py:meth:`waflib.Context.Context.post_recurse`
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:param node: script
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:type node: :py:class:`waflib.Node.Node`
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"""
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super(ConfigurationContext, self).post_recurse(node)
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self.hash = Utils.h_list((self.hash, node.read('rb')))
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self.files.append(node.abspath())
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def eval_rules(self, rules):
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"""
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Execute the configuration tests. The method :py:meth:`waflib.Configure.ConfigurationContext.err_handler`
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is used to process the eventual exceptions
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:param rules: list of configuration method names
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:type rules: list of string
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"""
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self.rules = Utils.to_list(rules)
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for x in self.rules:
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f = getattr(self, x)
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if not f: self.fatal("No such method '%s'." % x)
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try:
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f()
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except Exception as e:
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ret = self.err_handler(x, e)
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if ret == BREAK:
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break
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elif ret == CONTINUE:
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continue
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else:
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raise
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def err_handler(self, fun, error):
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"""
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Error handler for the configuration tests, the default is to let the exception raise
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:param fun: configuration test
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:type fun: method
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:param error: exception
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:type error: exception
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"""
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pass
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def conf(f):
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"""
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Decorator: attach new configuration functions to :py:class:`waflib.Build.BuildContext` and
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:py:class:`waflib.Configure.ConfigurationContext`. The methods bound will accept a parameter
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named 'mandatory' to disable the configuration errors::
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def configure(conf):
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conf.find_program('abc', mandatory=False)
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:param f: method to bind
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:type f: function
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"""
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def fun(*k, **kw):
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mandatory = True
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if 'mandatory' in kw:
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mandatory = kw['mandatory']
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del kw['mandatory']
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try:
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return f(*k, **kw)
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except Errors.ConfigurationError:
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if mandatory:
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raise
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setattr(ConfigurationContext, f.__name__, fun)
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setattr(Build.BuildContext, f.__name__, fun)
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return f
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@conf
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def add_os_flags(self, var, dest=None, dup=True):
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"""
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Import operating system environment values into ``conf.env`` dict::
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def configure(conf):
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conf.add_os_flags('CFLAGS')
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:param var: variable to use
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:type var: string
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:param dest: destination variable, by default the same as var
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:type dest: string
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:param dup: add the same set of flags again
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:type dup: bool
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"""
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try:
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flags = shlex.split(self.environ[var])
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except KeyError:
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return
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# TODO: in waf 1.9, make dup=False the default
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if dup or ''.join(flags) not in ''.join(Utils.to_list(self.env[dest or var])):
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self.env.append_value(dest or var, flags)
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@conf
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def cmd_to_list(self, cmd):
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"""
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Detect if a command is written in pseudo shell like ``ccache g++`` and return a list.
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:param cmd: command
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:type cmd: a string or a list of string
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"""
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if isinstance(cmd, str) and cmd.find(' '):
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try:
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os.stat(cmd)
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except OSError:
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return shlex.split(cmd)
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else:
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return [cmd]
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return cmd
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@conf
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def check_waf_version(self, mini='1.7.99', maxi='1.9.0', **kw):
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"""
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Raise a Configuration error if the Waf version does not strictly match the given bounds::
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conf.check_waf_version(mini='1.8.0', maxi='1.9.0')
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:type mini: number, tuple or string
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:param mini: Minimum required version
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:type maxi: number, tuple or string
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:param maxi: Maximum allowed version
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"""
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self.start_msg('Checking for waf version in %s-%s' % (str(mini), str(maxi)), **kw)
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ver = Context.HEXVERSION
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if Utils.num2ver(mini) > ver:
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self.fatal('waf version should be at least %r (%r found)' % (Utils.num2ver(mini), ver))
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if Utils.num2ver(maxi) < ver:
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self.fatal('waf version should be at most %r (%r found)' % (Utils.num2ver(maxi), ver))
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self.end_msg('ok', **kw)
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@conf
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def find_file(self, filename, path_list=[]):
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"""
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Find a file in a list of paths
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:param filename: name of the file to search for
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:param path_list: list of directories to search
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:return: the first occurrence filename or '' if filename could not be found
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"""
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for n in Utils.to_list(filename):
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for d in Utils.to_list(path_list):
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p = os.path.join(d, n)
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if os.path.exists(p):
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return p
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self.fatal('Could not find %r' % filename)
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@conf
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def find_program(self, filename, **kw):
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"""
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Search for a program on the operating system
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When var is used, you may set os.environ[var] to help find a specific program version, for example::
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$ CC='ccache gcc' waf configure
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:param path_list: paths to use for searching
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:type param_list: list of string
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:param var: store the result to conf.env[var], by default use filename.upper()
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:type var: string
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:param ext: list of extensions for the binary (do not add an extension for portability)
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:type ext: list of string
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:param msg: name to display in the log, by default filename is used
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:type msg: string
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:param interpreter: interpreter for the program
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:type interpreter: ConfigSet variable key
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"""
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exts = kw.get('exts', Utils.is_win32 and '.exe,.com,.bat,.cmd' or ',.sh,.pl,.py')
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environ = kw.get('environ', getattr(self, 'environ', os.environ))
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ret = ''
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filename = Utils.to_list(filename)
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msg = kw.get('msg', ', '.join(filename))
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var = kw.get('var', '')
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if not var:
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var = re.sub(r'[-.]', '_', filename[0].upper())
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path_list = kw.get('path_list', '')
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if path_list:
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path_list = Utils.to_list(path_list)
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else:
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path_list = environ.get('PATH', '').split(os.pathsep)
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if var in environ:
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filename = environ[var]
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if os.path.isfile(filename):
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# typical CC=/usr/bin/gcc waf configure build
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ret = [filename]
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else:
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# case CC='ccache gcc' waf configure build
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ret = self.cmd_to_list(filename)
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elif self.env[var]:
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# set by the user in the wscript file
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ret = self.env[var]
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ret = self.cmd_to_list(ret)
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else:
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if not ret:
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ret = self.find_binary(filename, exts.split(','), path_list)
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if not ret and Utils.winreg:
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ret = Utils.get_registry_app_path(Utils.winreg.HKEY_CURRENT_USER, filename)
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if not ret and Utils.winreg:
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ret = Utils.get_registry_app_path(Utils.winreg.HKEY_LOCAL_MACHINE, filename)
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ret = self.cmd_to_list(ret)
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if ret:
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if len(ret) == 1:
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retmsg = ret[0]
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else:
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retmsg = ret
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else:
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retmsg = False
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self.msg("Checking for program '%s'" % msg, retmsg, **kw)
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if not kw.get('quiet', None):
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self.to_log('find program=%r paths=%r var=%r -> %r' % (filename, path_list, var, ret))
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if not ret:
|
|
self.fatal(kw.get('errmsg', '') or 'Could not find the program %r' % filename)
|
|
|
|
interpreter = kw.get('interpreter', None)
|
|
if interpreter is None:
|
|
if not Utils.check_exe(ret[0], env=environ):
|
|
self.fatal('Program %r is not executable' % ret)
|
|
self.env[var] = ret
|
|
else:
|
|
self.env[var] = self.env[interpreter] + ret
|
|
|
|
return ret
|
|
|
|
@conf
|
|
def find_binary(self, filenames, exts, paths):
|
|
for f in filenames:
|
|
for ext in exts:
|
|
exe_name = f + ext
|
|
if os.path.isabs(exe_name):
|
|
if os.path.isfile(exe_name):
|
|
return exe_name
|
|
else:
|
|
for path in paths:
|
|
x = os.path.expanduser(os.path.join(path, exe_name))
|
|
if os.path.isfile(x):
|
|
return x
|
|
return None
|
|
|
|
|
|
@conf
|
|
def run_build(self, *k, **kw):
|
|
"""
|
|
Create a temporary build context to execute a build. A reference to that build
|
|
context is kept on self.test_bld for debugging purposes, and you should not rely
|
|
on it too much (read the note on the cache below).
|
|
The parameters given in the arguments to this function are passed as arguments for
|
|
a single task generator created in the build. Only three parameters are obligatory:
|
|
|
|
:param features: features to pass to a task generator created in the build
|
|
:type features: list of string
|
|
:param compile_filename: file to create for the compilation (default: *test.c*)
|
|
:type compile_filename: string
|
|
:param code: code to write in the filename to compile
|
|
:type code: string
|
|
|
|
Though this function returns *0* by default, the build may set an attribute named *retval* on the
|
|
build context object to return a particular value. See :py:func:`waflib.Tools.c_config.test_exec_fun` for example.
|
|
|
|
This function also provides a limited cache. To use it, provide the following option::
|
|
|
|
def options(opt):
|
|
opt.add_option('--confcache', dest='confcache', default=0,
|
|
action='count', help='Use a configuration cache')
|
|
|
|
And execute the configuration with the following command-line::
|
|
|
|
$ waf configure --confcache
|
|
|
|
"""
|
|
|
|
lst = [str(v) for (p, v) in kw.items() if p != 'env']
|
|
h = Utils.h_list(lst)
|
|
dir = self.bldnode.abspath() + os.sep + (not Utils.is_win32 and '.' or '') + 'conf_check_' + Utils.to_hex(h)
|
|
|
|
try:
|
|
os.makedirs(dir)
|
|
except OSError:
|
|
pass
|
|
|
|
try:
|
|
os.stat(dir)
|
|
except OSError:
|
|
self.fatal('cannot use the configuration test folder %r' % dir)
|
|
|
|
cachemode = getattr(Options.options, 'confcache', None)
|
|
if cachemode == 1:
|
|
try:
|
|
proj = ConfigSet.ConfigSet(os.path.join(dir, 'cache_run_build'))
|
|
except OSError:
|
|
pass
|
|
except IOError:
|
|
pass
|
|
else:
|
|
ret = proj['cache_run_build']
|
|
if isinstance(ret, str) and ret.startswith('Test does not build'):
|
|
self.fatal(ret)
|
|
return ret
|
|
|
|
bdir = os.path.join(dir, 'testbuild')
|
|
|
|
if not os.path.exists(bdir):
|
|
os.makedirs(bdir)
|
|
|
|
self.test_bld = bld = Build.BuildContext(top_dir=dir, out_dir=bdir)
|
|
bld.init_dirs()
|
|
bld.progress_bar = 0
|
|
bld.targets = '*'
|
|
|
|
bld.logger = self.logger
|
|
bld.all_envs.update(self.all_envs) # not really necessary
|
|
bld.env = kw['env']
|
|
|
|
# OMG huge hack
|
|
bld.kw = kw
|
|
bld.conf = self
|
|
kw['build_fun'](bld)
|
|
|
|
ret = -1
|
|
try:
|
|
try:
|
|
bld.compile()
|
|
except Errors.WafError:
|
|
ret = 'Test does not build: %s' % Utils.ex_stack()
|
|
self.fatal(ret)
|
|
else:
|
|
ret = getattr(bld, 'retval', 0)
|
|
finally:
|
|
if cachemode == 1:
|
|
# cache the results each time
|
|
proj = ConfigSet.ConfigSet()
|
|
proj['cache_run_build'] = ret
|
|
proj.store(os.path.join(dir, 'cache_run_build'))
|
|
else:
|
|
shutil.rmtree(dir)
|
|
|
|
return ret
|
|
|
|
@conf
|
|
def ret_msg(self, msg, args):
|
|
if isinstance(msg, str):
|
|
return msg
|
|
return msg(args)
|
|
|
|
@conf
|
|
def test(self, *k, **kw):
|
|
|
|
if not 'env' in kw:
|
|
kw['env'] = self.env.derive()
|
|
|
|
# validate_c for example
|
|
if kw.get('validate', None):
|
|
kw['validate'](kw)
|
|
|
|
self.start_msg(kw['msg'], **kw)
|
|
ret = None
|
|
try:
|
|
ret = self.run_build(*k, **kw)
|
|
except self.errors.ConfigurationError:
|
|
self.end_msg(kw['errmsg'], 'YELLOW', **kw)
|
|
if Logs.verbose > 1:
|
|
raise
|
|
else:
|
|
self.fatal('The configuration failed')
|
|
else:
|
|
kw['success'] = ret
|
|
|
|
if kw.get('post_check', None):
|
|
ret = kw['post_check'](kw)
|
|
|
|
if ret:
|
|
self.end_msg(kw['errmsg'], 'YELLOW', **kw)
|
|
self.fatal('The configuration failed %r' % ret)
|
|
else:
|
|
self.end_msg(self.ret_msg(kw['okmsg'], kw), **kw)
|
|
return ret
|
|
|
|
|
|
|