import os.path, sysclass ConfigurationError(Exception):    def __init__(self, reason):        Exception.__init__(self, "Configuration failed: %s" % reason)env = Environment()# sunos, aix, hpux, irix, sunos appear to be platforms known by SCons, assuming they're POSIX compliantPosix = ("linux", "darwin", "sunos", "aix", "hpux", "irix", "sunos")Windows = ("win32", "cygwin")if env["PLATFORM"] == "posix":    if sys.platform[:5] == "linux":        Platform = "linux"    else:        raise ConfigurationError("Unknown platform %s" % sys.platform)else:    if not env["PLATFORM"] in ("win32", "cygwin") + Posix:        raise ConfigurationError("Unknown platform %s" % env["PLATFORM"])    Platform = env["PLATFORM"]# Inspired by the versioning scheme followed by Qt, it seems sensible enough. There are three components: major, minor# and micro. Major changes with each subtraction from the API (backward-incompatible, i.e. V19 vs. V18), minor changes# with each addition to the API (backward-compatible), micro changes with each revision of the source code.ApiVer = "2.0.0"Export("Platform", "Posix", "ConfigurationError", "ApiVer")