import os.path, sys

class 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 compliant
Posix = ("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"]

Export("Platform", "Posix", "ConfigurationError")