--- /dev/null
+"""SCons.Platform
+
+SCons platform selection.
+
+This looks for modules that define a callable object that can modify a
+construction environment as appropriate for a given platform.
+
+Note that we take a more simplistic view of "platform" than Python does.
+We're looking for a single string that determines a set of
+tool-independent variables with which to initialize a construction
+environment. Consequently, we'll examine both sys.platform and os.name
+(and anything else that might come in to play) in order to return some
+specification which is unique enough for our purposes.
+
+Note that because this subsysem just *selects* a callable that can
+modify a construction environment, it's possible for people to define
+their own "platform specification" in an arbitrary callable function.
+No one needs to use or tie in to this subsystem in order to roll
+their own platform definition.
+"""
+
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "src/engine/SCons/Platform/__init__.py 3842 2008/12/20 22:59:52 scons"
+
+import imp
+import os
+import string
+import sys
+import tempfile
+
+import SCons.Errors
+import SCons.Tool
+
+def platform_default():
+ """Return the platform string for our execution environment.
+
+ The returned value should map to one of the SCons/Platform/*.py
+ files. Since we're architecture independent, though, we don't
+ care about the machine architecture.
+ """
+ osname = os.name
+ if osname == 'java':
+ osname = os._osType
+ if osname == 'posix':
+ if sys.platform == 'cygwin':
+ return 'cygwin'
+ elif string.find(sys.platform, 'irix') != -1:
+ return 'irix'
+ elif string.find(sys.platform, 'sunos') != -1:
+ return 'sunos'
+ elif string.find(sys.platform, 'hp-ux') != -1:
+ return 'hpux'
+ elif string.find(sys.platform, 'aix') != -1:
+ return 'aix'
+ elif string.find(sys.platform, 'darwin') != -1:
+ return 'darwin'
+ else:
+ return 'posix'
+ elif os.name == 'os2':
+ return 'os2'
+ else:
+ return sys.platform
+
+def platform_module(name = platform_default()):
+ """Return the imported module for the platform.
+
+ This looks for a module name that matches the specified argument.
+ If the name is unspecified, we fetch the appropriate default for
+ our execution environment.
+ """
+ full_name = 'SCons.Platform.' + name
+ if not sys.modules.has_key(full_name):
+ if os.name == 'java':
+ eval(full_name)
+ else:
+ try:
+ file, path, desc = imp.find_module(name,
+ sys.modules['SCons.Platform'].__path__)
+ try:
+ mod = imp.load_module(full_name, file, path, desc)
+ finally:
+ if file:
+ file.close()
+ except ImportError:
+ try:
+ import zipimport
+ importer = zipimport.zipimporter( sys.modules['SCons.Platform'].__path__[0] )
+ mod = importer.load_module(full_name)
+ except ImportError:
+ raise SCons.Errors.UserError, "No platform named '%s'" % name
+ setattr(SCons.Platform, name, mod)
+ return sys.modules[full_name]
+
+def DefaultToolList(platform, env):
+ """Select a default tool list for the specified platform.
+ """
+ return SCons.Tool.tool_list(platform, env)
+
+class PlatformSpec:
+ def __init__(self, name):
+ self.name = name
+
+ def __str__(self):
+ return self.name
+
+class TempFileMunge:
+ """A callable class. You can set an Environment variable to this,
+ then call it with a string argument, then it will perform temporary
+ file substitution on it. This is used to circumvent the long command
+ line limitation.
+
+ Example usage:
+ env["TEMPFILE"] = TempFileMunge
+ env["LINKCOM"] = "${TEMPFILE('$LINK $TARGET $SOURCES')}"
+
+ By default, the name of the temporary file used begins with a
+ prefix of '@'. This may be configred for other tool chains by
+ setting '$TEMPFILEPREFIX'.
+
+ env["TEMPFILEPREFIX"] = '-@' # diab compiler
+ env["TEMPFILEPREFIX"] = '-via' # arm tool chain
+ """
+ def __init__(self, cmd):
+ self.cmd = cmd
+
+ def __call__(self, target, source, env, for_signature):
+ if for_signature:
+ return self.cmd
+ cmd = env.subst_list(self.cmd, 0, target, source)[0]
+ try:
+ maxline = int(env.subst('$MAXLINELENGTH'))
+ except ValueError:
+ maxline = 2048
+
+ if (reduce(lambda x, y: x + len(y), cmd, 0) + len(cmd)) <= maxline:
+ return self.cmd
+
+ # We do a normpath because mktemp() has what appears to be
+ # a bug in Windows that will use a forward slash as a path
+ # delimiter. Windows's link mistakes that for a command line
+ # switch and barfs.
+ #
+ # We use the .lnk suffix for the benefit of the Phar Lap
+ # linkloc linker, which likes to append an .lnk suffix if
+ # none is given.
+ tmp = os.path.normpath(tempfile.mktemp('.lnk'))
+ native_tmp = SCons.Util.get_native_path(tmp)
+
+ if env['SHELL'] and env['SHELL'] == 'sh':
+ # The sh shell will try to escape the backslashes in the
+ # path, so unescape them.
+ native_tmp = string.replace(native_tmp, '\\', r'\\\\')
+ # In Cygwin, we want to use rm to delete the temporary
+ # file, because del does not exist in the sh shell.
+ rm = env.Detect('rm') or 'del'
+ else:
+ # Don't use 'rm' if the shell is not sh, because rm won't
+ # work with the Windows shells (cmd.exe or command.com) or
+ # Windows path names.
+ rm = 'del'
+
+ prefix = env.subst('$TEMPFILEPREFIX')
+ if not prefix:
+ prefix = '@'
+
+ args = map(SCons.Subst.quote_spaces, cmd[1:])
+ open(tmp, 'w').write(string.join(args, " ") + "\n")
+ # XXX Using the SCons.Action.print_actions value directly
+ # like this is bogus, but expedient. This class should
+ # really be rewritten as an Action that defines the
+ # __call__() and strfunction() methods and lets the
+ # normal action-execution logic handle whether or not to
+ # print/execute the action. The problem, though, is all
+ # of that is decided before we execute this method as
+ # part of expanding the $TEMPFILE construction variable.
+ # Consequently, refactoring this will have to wait until
+ # we get more flexible with allowing Actions to exist
+ # independently and get strung together arbitrarily like
+ # Ant tasks. In the meantime, it's going to be more
+ # user-friendly to not let obsession with architectural
+ # purity get in the way of just being helpful, so we'll
+ # reach into SCons.Action directly.
+ if SCons.Action.print_actions:
+ print("Using tempfile "+native_tmp+" for command line:\n"+
+ str(cmd[0]) + " " + string.join(args," "))
+ return [ cmd[0], prefix + native_tmp + '\n' + rm, native_tmp ]
+
+def Platform(name = platform_default()):
+ """Select a canned Platform specification.
+ """
+ module = platform_module(name)
+ spec = PlatformSpec(name)
+ spec.__call__ = module.generate
+ return spec
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