126 lines
4.5 KiB
Python
126 lines
4.5 KiB
Python
"""SCons.Platform
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SCons platform selection.
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This looks for modules that define a callable object that can modify a
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construction environment as appropriate for a given platform.
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Note that we take a more simplistic view of "platform" than Python does.
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We're looking for a single string that determines a set of
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tool-independent variables with which to initialize a construction
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environment. Consequently, we'll examine both sys.platform and os.name
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(and anything else that might come in to play) in order to return some
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specification which is unique enough for our purposes.
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Note that because this subsysem just *selects* a callable that can
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modify a construction environment, it's possible for people to define
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their own "platform specification" in an arbitrary callable function.
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No one needs to use or tie in to this subsystem in order to roll
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their own platform definition.
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"""
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#
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# Copyright (c) 2001, 2002, 2003, 2004 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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__revision__ = "/home/scons/scons/branch.0/baseline/src/engine/SCons/Platform/__init__.py 0.96.1.D001 2004/08/23 09:55:29 knight"
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import imp
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import os
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import string
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import sys
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import SCons.Errors
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import SCons.Tool
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def platform_default():
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"""Return the platform string for our execution environment.
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The returned value should map to one of the SCons/Platform/*.py
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files. Since we're architecture independent, though, we don't
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care about the machine architecture.
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"""
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osname = os.name
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if osname == 'java':
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osname = os._osType
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if osname == 'posix':
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if sys.platform == 'cygwin':
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return 'cygwin'
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elif string.find(sys.platform, 'irix') != -1:
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return 'irix'
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elif string.find(sys.platform, 'sunos') != -1:
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return 'sunos'
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elif string.find(sys.platform, 'hp-ux') != -1:
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return 'hpux'
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elif string.find(sys.platform, 'aix') != -1:
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return 'aix'
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elif string.find(sys.platform, 'darwin') != -1:
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return 'darwin'
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else:
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return 'posix'
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elif os.name == 'os2':
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return 'os2'
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else:
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return sys.platform
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def platform_module(name = platform_default()):
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"""Return the imported module for the platform.
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This looks for a module name that matches the specified argument.
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If the name is unspecified, we fetch the appropriate default for
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our execution environment.
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"""
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full_name = 'SCons.Platform.' + name
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if not sys.modules.has_key(full_name):
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if os.name == 'java':
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eval(full_name)
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else:
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try:
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file, path, desc = imp.find_module(name,
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sys.modules['SCons.Platform'].__path__)
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mod = imp.load_module(full_name, file, path, desc)
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setattr(SCons.Platform, name, mod)
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except ImportError:
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raise SCons.Errors.UserError, "No platform named '%s'" % name
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if file:
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file.close()
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return sys.modules[full_name]
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def DefaultToolList(platform, env):
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"""Select a default tool list for the specified platform.
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"""
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return SCons.Tool.tool_list(platform, env)
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class PlatformSpec:
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def __init__(self, name):
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self.name = name
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def __str__(self):
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return self.name
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def Platform(name = platform_default()):
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"""Select a canned Platform specification.
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"""
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module = platform_module(name)
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spec = PlatformSpec(name)
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spec.__call__ = module.generate
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return spec
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