495 lines
17 KiB
Python
495 lines
17 KiB
Python
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"""SCons.Defaults
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Builders and other things for the local site. Here's where we'll
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duplicate the functionality of autoconf until we move it into the
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installation procedure or use something like qmconf.
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The code that reads the registry to find MSVC components was borrowed
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from distutils.msvccompiler.
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"""
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#
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# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 The SCons Foundation
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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from __future__ import division
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__revision__ = "src/engine/SCons/Defaults.py 2013/03/03 09:48:35 garyo"
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import os
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import errno
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import shutil
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import stat
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import time
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import sys
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import SCons.Action
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import SCons.Builder
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import SCons.CacheDir
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import SCons.Environment
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import SCons.PathList
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import SCons.Subst
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import SCons.Tool
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# A placeholder for a default Environment (for fetching source files
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# from source code management systems and the like). This must be
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# initialized later, after the top-level directory is set by the calling
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# interface.
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_default_env = None
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# Lazily instantiate the default environment so the overhead of creating
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# it doesn't apply when it's not needed.
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def _fetch_DefaultEnvironment(*args, **kw):
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"""
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Returns the already-created default construction environment.
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"""
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global _default_env
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return _default_env
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def DefaultEnvironment(*args, **kw):
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"""
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Initial public entry point for creating the default construction
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Environment.
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After creating the environment, we overwrite our name
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(DefaultEnvironment) with the _fetch_DefaultEnvironment() function,
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which more efficiently returns the initialized default construction
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environment without checking for its existence.
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(This function still exists with its _default_check because someone
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else (*cough* Script/__init__.py *cough*) may keep a reference
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to this function. So we can't use the fully functional idiom of
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having the name originally be a something that *only* creates the
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construction environment and then overwrites the name.)
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"""
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global _default_env
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if not _default_env:
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import SCons.Util
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_default_env = SCons.Environment.Environment(*args, **kw)
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if SCons.Util.md5:
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_default_env.Decider('MD5')
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else:
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_default_env.Decider('timestamp-match')
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global DefaultEnvironment
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DefaultEnvironment = _fetch_DefaultEnvironment
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_default_env._CacheDir_path = None
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return _default_env
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# Emitters for setting the shared attribute on object files,
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# and an action for checking that all of the source files
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# going into a shared library are, in fact, shared.
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def StaticObjectEmitter(target, source, env):
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for tgt in target:
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tgt.attributes.shared = None
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return (target, source)
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def SharedObjectEmitter(target, source, env):
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for tgt in target:
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tgt.attributes.shared = 1
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return (target, source)
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def SharedFlagChecker(source, target, env):
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same = env.subst('$STATIC_AND_SHARED_OBJECTS_ARE_THE_SAME')
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if same == '0' or same == '' or same == 'False':
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for src in source:
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try:
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shared = src.attributes.shared
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except AttributeError:
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shared = None
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if not shared:
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raise SCons.Errors.UserError("Source file: %s is static and is not compatible with shared target: %s" % (src, target[0]))
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SharedCheck = SCons.Action.Action(SharedFlagChecker, None)
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# Some people were using these variable name before we made
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# SourceFileScanner part of the public interface. Don't break their
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# SConscript files until we've given them some fair warning and a
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# transition period.
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CScan = SCons.Tool.CScanner
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DScan = SCons.Tool.DScanner
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LaTeXScan = SCons.Tool.LaTeXScanner
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ObjSourceScan = SCons.Tool.SourceFileScanner
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ProgScan = SCons.Tool.ProgramScanner
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# These aren't really tool scanners, so they don't quite belong with
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# the rest of those in Tool/__init__.py, but I'm not sure where else
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# they should go. Leave them here for now.
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import SCons.Scanner.Dir
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DirScanner = SCons.Scanner.Dir.DirScanner()
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DirEntryScanner = SCons.Scanner.Dir.DirEntryScanner()
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# Actions for common languages.
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CAction = SCons.Action.Action("$CCCOM", "$CCCOMSTR")
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ShCAction = SCons.Action.Action("$SHCCCOM", "$SHCCCOMSTR")
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CXXAction = SCons.Action.Action("$CXXCOM", "$CXXCOMSTR")
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ShCXXAction = SCons.Action.Action("$SHCXXCOM", "$SHCXXCOMSTR")
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ASAction = SCons.Action.Action("$ASCOM", "$ASCOMSTR")
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ASPPAction = SCons.Action.Action("$ASPPCOM", "$ASPPCOMSTR")
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LinkAction = SCons.Action.Action("$LINKCOM", "$LINKCOMSTR")
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ShLinkAction = SCons.Action.Action("$SHLINKCOM", "$SHLINKCOMSTR")
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LdModuleLinkAction = SCons.Action.Action("$LDMODULECOM", "$LDMODULECOMSTR")
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# Common tasks that we allow users to perform in platform-independent
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# ways by creating ActionFactory instances.
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ActionFactory = SCons.Action.ActionFactory
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def get_paths_str(dest):
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# If dest is a list, we need to manually call str() on each element
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if SCons.Util.is_List(dest):
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elem_strs = []
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for element in dest:
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elem_strs.append('"' + str(element) + '"')
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return '[' + ', '.join(elem_strs) + ']'
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else:
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return '"' + str(dest) + '"'
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def chmod_func(dest, mode):
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SCons.Node.FS.invalidate_node_memos(dest)
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if not SCons.Util.is_List(dest):
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dest = [dest]
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for element in dest:
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os.chmod(str(element), mode)
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def chmod_strfunc(dest, mode):
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return 'Chmod(%s, 0%o)' % (get_paths_str(dest), mode)
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Chmod = ActionFactory(chmod_func, chmod_strfunc)
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def copy_func(dest, src):
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SCons.Node.FS.invalidate_node_memos(dest)
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if SCons.Util.is_List(src) and os.path.isdir(dest):
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for file in src:
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shutil.copy2(file, dest)
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return 0
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elif os.path.isfile(src):
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return shutil.copy2(src, dest)
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else:
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return shutil.copytree(src, dest, 1)
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Copy = ActionFactory(copy_func,
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lambda dest, src: 'Copy("%s", "%s")' % (dest, src),
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convert=str)
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def delete_func(dest, must_exist=0):
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SCons.Node.FS.invalidate_node_memos(dest)
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if not SCons.Util.is_List(dest):
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dest = [dest]
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for entry in dest:
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entry = str(entry)
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# os.path.exists returns False with broken links that exist
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entry_exists = os.path.exists(entry) or os.path.islink(entry)
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if not entry_exists and not must_exist:
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continue
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# os.path.isdir returns True when entry is a link to a dir
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if os.path.isdir(entry) and not os.path.islink(entry):
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shutil.rmtree(entry, 1)
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continue
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os.unlink(entry)
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def delete_strfunc(dest, must_exist=0):
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return 'Delete(%s)' % get_paths_str(dest)
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Delete = ActionFactory(delete_func, delete_strfunc)
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def mkdir_func(dest):
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SCons.Node.FS.invalidate_node_memos(dest)
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if not SCons.Util.is_List(dest):
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dest = [dest]
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for entry in dest:
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try:
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os.makedirs(str(entry))
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except os.error, e:
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p = str(entry)
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if (e.args[0] == errno.EEXIST or
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(sys.platform=='win32' and e.args[0]==183)) \
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and os.path.isdir(str(entry)):
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pass # not an error if already exists
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else:
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raise
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Mkdir = ActionFactory(mkdir_func,
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lambda dir: 'Mkdir(%s)' % get_paths_str(dir))
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def move_func(dest, src):
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SCons.Node.FS.invalidate_node_memos(dest)
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SCons.Node.FS.invalidate_node_memos(src)
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shutil.move(src, dest)
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Move = ActionFactory(move_func,
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lambda dest, src: 'Move("%s", "%s")' % (dest, src),
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convert=str)
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def touch_func(dest):
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SCons.Node.FS.invalidate_node_memos(dest)
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if not SCons.Util.is_List(dest):
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dest = [dest]
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for file in dest:
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file = str(file)
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mtime = int(time.time())
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if os.path.exists(file):
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atime = os.path.getatime(file)
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else:
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open(file, 'w')
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atime = mtime
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os.utime(file, (atime, mtime))
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Touch = ActionFactory(touch_func,
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lambda file: 'Touch(%s)' % get_paths_str(file))
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# Internal utility functions
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def _concat(prefix, list, suffix, env, f=lambda x: x, target=None, source=None):
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"""
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Creates a new list from 'list' by first interpolating each element
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in the list using the 'env' dictionary and then calling f on the
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list, and finally calling _concat_ixes to concatenate 'prefix' and
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'suffix' onto each element of the list.
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"""
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if not list:
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return list
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l = f(SCons.PathList.PathList(list).subst_path(env, target, source))
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if l is not None:
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list = l
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return _concat_ixes(prefix, list, suffix, env)
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def _concat_ixes(prefix, list, suffix, env):
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"""
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Creates a new list from 'list' by concatenating the 'prefix' and
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'suffix' arguments onto each element of the list. A trailing space
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on 'prefix' or leading space on 'suffix' will cause them to be put
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into separate list elements rather than being concatenated.
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"""
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result = []
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# ensure that prefix and suffix are strings
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prefix = str(env.subst(prefix, SCons.Subst.SUBST_RAW))
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suffix = str(env.subst(suffix, SCons.Subst.SUBST_RAW))
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for x in list:
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if isinstance(x, SCons.Node.FS.File):
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result.append(x)
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continue
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x = str(x)
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if x:
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if prefix:
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if prefix[-1] == ' ':
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result.append(prefix[:-1])
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elif x[:len(prefix)] != prefix:
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x = prefix + x
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result.append(x)
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if suffix:
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if suffix[0] == ' ':
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result.append(suffix[1:])
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elif x[-len(suffix):] != suffix:
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result[-1] = result[-1]+suffix
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return result
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def _stripixes(prefix, itms, suffix, stripprefixes, stripsuffixes, env, c=None):
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"""
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This is a wrapper around _concat()/_concat_ixes() that checks for
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the existence of prefixes or suffixes on list items and strips them
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where it finds them. This is used by tools (like the GNU linker)
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that need to turn something like 'libfoo.a' into '-lfoo'.
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"""
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if not itms:
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return itms
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if not callable(c):
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env_c = env['_concat']
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if env_c != _concat and callable(env_c):
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# There's a custom _concat() method in the construction
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# environment, and we've allowed people to set that in
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# the past (see test/custom-concat.py), so preserve the
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# backwards compatibility.
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c = env_c
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else:
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c = _concat_ixes
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stripprefixes = list(map(env.subst, SCons.Util.flatten(stripprefixes)))
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stripsuffixes = list(map(env.subst, SCons.Util.flatten(stripsuffixes)))
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stripped = []
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for l in SCons.PathList.PathList(itms).subst_path(env, None, None):
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if isinstance(l, SCons.Node.FS.File):
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stripped.append(l)
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continue
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if not SCons.Util.is_String(l):
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l = str(l)
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for stripprefix in stripprefixes:
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lsp = len(stripprefix)
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if l[:lsp] == stripprefix:
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l = l[lsp:]
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# Do not strip more than one prefix
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break
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for stripsuffix in stripsuffixes:
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lss = len(stripsuffix)
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if l[-lss:] == stripsuffix:
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l = l[:-lss]
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# Do not strip more than one suffix
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break
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stripped.append(l)
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return c(prefix, stripped, suffix, env)
|
||
|
|
|
||
|
|
def processDefines(defs):
|
||
|
|
"""process defines, resolving strings, lists, dictionaries, into a list of
|
||
|
|
strings
|
||
|
|
"""
|
||
|
|
if SCons.Util.is_List(defs):
|
||
|
|
l = []
|
||
|
|
for d in defs:
|
||
|
|
if d is None:
|
||
|
|
continue
|
||
|
|
elif SCons.Util.is_List(d) or isinstance(d, tuple):
|
||
|
|
if len(d) >= 2:
|
||
|
|
l.append(str(d[0]) + '=' + str(d[1]))
|
||
|
|
else:
|
||
|
|
l.append(str(d[0]))
|
||
|
|
elif SCons.Util.is_Dict(d):
|
||
|
|
for macro,value in d.iteritems():
|
||
|
|
if value is not None:
|
||
|
|
l.append(str(macro) + '=' + str(value))
|
||
|
|
else:
|
||
|
|
l.append(str(macro))
|
||
|
|
elif SCons.Util.is_String(d):
|
||
|
|
l.append(str(d))
|
||
|
|
else:
|
||
|
|
raise SCons.Errors.UserError("DEFINE %s is not a list, dict, string or None."%repr(d))
|
||
|
|
elif SCons.Util.is_Dict(defs):
|
||
|
|
# The items in a dictionary are stored in random order, but
|
||
|
|
# if the order of the command-line options changes from
|
||
|
|
# invocation to invocation, then the signature of the command
|
||
|
|
# line will change and we'll get random unnecessary rebuilds.
|
||
|
|
# Consequently, we have to sort the keys to ensure a
|
||
|
|
# consistent order...
|
||
|
|
l = []
|
||
|
|
for k,v in sorted(defs.items()):
|
||
|
|
if v is None:
|
||
|
|
l.append(str(k))
|
||
|
|
else:
|
||
|
|
l.append(str(k) + '=' + str(v))
|
||
|
|
else:
|
||
|
|
l = [str(defs)]
|
||
|
|
return l
|
||
|
|
|
||
|
|
def _defines(prefix, defs, suffix, env, c=_concat_ixes):
|
||
|
|
"""A wrapper around _concat_ixes that turns a list or string
|
||
|
|
into a list of C preprocessor command-line definitions.
|
||
|
|
"""
|
||
|
|
|
||
|
|
return c(prefix, env.subst_path(processDefines(defs)), suffix, env)
|
||
|
|
|
||
|
|
class NullCmdGenerator(object):
|
||
|
|
"""This is a callable class that can be used in place of other
|
||
|
|
command generators if you don't want them to do anything.
|
||
|
|
|
||
|
|
The __call__ method for this class simply returns the thing
|
||
|
|
you instantiated it with.
|
||
|
|
|
||
|
|
Example usage:
|
||
|
|
env["DO_NOTHING"] = NullCmdGenerator
|
||
|
|
env["LINKCOM"] = "${DO_NOTHING('$LINK $SOURCES $TARGET')}"
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self, cmd):
|
||
|
|
self.cmd = cmd
|
||
|
|
|
||
|
|
def __call__(self, target, source, env, for_signature=None):
|
||
|
|
return self.cmd
|
||
|
|
|
||
|
|
class Variable_Method_Caller(object):
|
||
|
|
"""A class for finding a construction variable on the stack and
|
||
|
|
calling one of its methods.
|
||
|
|
|
||
|
|
We use this to support "construction variables" in our string
|
||
|
|
eval()s that actually stand in for methods--specifically, use
|
||
|
|
of "RDirs" in call to _concat that should actually execute the
|
||
|
|
"TARGET.RDirs" method. (We used to support this by creating a little
|
||
|
|
"build dictionary" that mapped RDirs to the method, but this got in
|
||
|
|
the way of Memoizing construction environments, because we had to
|
||
|
|
create new environment objects to hold the variables.)
|
||
|
|
"""
|
||
|
|
def __init__(self, variable, method):
|
||
|
|
self.variable = variable
|
||
|
|
self.method = method
|
||
|
|
def __call__(self, *args, **kw):
|
||
|
|
try: 1//0
|
||
|
|
except ZeroDivisionError:
|
||
|
|
# Don't start iterating with the current stack-frame to
|
||
|
|
# prevent creating reference cycles (f_back is safe).
|
||
|
|
frame = sys.exc_info()[2].tb_frame.f_back
|
||
|
|
variable = self.variable
|
||
|
|
while frame:
|
||
|
|
if variable in frame.f_locals:
|
||
|
|
v = frame.f_locals[variable]
|
||
|
|
if v:
|
||
|
|
method = getattr(v, self.method)
|
||
|
|
return method(*args, **kw)
|
||
|
|
frame = frame.f_back
|
||
|
|
return None
|
||
|
|
|
||
|
|
ConstructionEnvironment = {
|
||
|
|
'BUILDERS' : {},
|
||
|
|
'SCANNERS' : [],
|
||
|
|
'CONFIGUREDIR' : '#/.sconf_temp',
|
||
|
|
'CONFIGURELOG' : '#/config.log',
|
||
|
|
'CPPSUFFIXES' : SCons.Tool.CSuffixes,
|
||
|
|
'DSUFFIXES' : SCons.Tool.DSuffixes,
|
||
|
|
'ENV' : {},
|
||
|
|
'IDLSUFFIXES' : SCons.Tool.IDLSuffixes,
|
||
|
|
# 'LATEXSUFFIXES' : SCons.Tool.LaTeXSuffixes, # moved to the TeX tools generate functions
|
||
|
|
'_concat' : _concat,
|
||
|
|
'_defines' : _defines,
|
||
|
|
'_stripixes' : _stripixes,
|
||
|
|
'_LIBFLAGS' : '${_concat(LIBLINKPREFIX, LIBS, LIBLINKSUFFIX, __env__)}',
|
||
|
|
'_LIBDIRFLAGS' : '$( ${_concat(LIBDIRPREFIX, LIBPATH, LIBDIRSUFFIX, __env__, RDirs, TARGET, SOURCE)} $)',
|
||
|
|
'_CPPINCFLAGS' : '$( ${_concat(INCPREFIX, CPPPATH, INCSUFFIX, __env__, RDirs, TARGET, SOURCE)} $)',
|
||
|
|
'_CPPDEFFLAGS' : '${_defines(CPPDEFPREFIX, CPPDEFINES, CPPDEFSUFFIX, __env__)}',
|
||
|
|
'TEMPFILE' : NullCmdGenerator,
|
||
|
|
'Dir' : Variable_Method_Caller('TARGET', 'Dir'),
|
||
|
|
'Dirs' : Variable_Method_Caller('TARGET', 'Dirs'),
|
||
|
|
'File' : Variable_Method_Caller('TARGET', 'File'),
|
||
|
|
'RDirs' : Variable_Method_Caller('TARGET', 'RDirs'),
|
||
|
|
}
|
||
|
|
|
||
|
|
# Local Variables:
|
||
|
|
# tab-width:4
|
||
|
|
# indent-tabs-mode:nil
|
||
|
|
# End:
|
||
|
|
# vim: set expandtab tabstop=4 shiftwidth=4:
|