SConstruct

import os

cmd_options = {
    'board':          ['openmote-b'],
    'project':          ['demo-rx', 'demo-tx', 'freertos-cc2538', 'freertos-cc2538-tickless', 'ieee802154-sniffer',
                         'test-aes', 'test-board', 'test-crc', 'test-openmote', 'test-openmote-b', 'test-radio-at86rf215',
                         'test-radio-cc2538', 'test-radiotimer', 'test-rendezvous', 'test-serial',
                         'test-sleeptimer', 'test-spi', 'test-pwm', 'test-task', 'test-timer', 'test-uart', 'experiment-tx', 'experiment-rx'],
    'compiler':          ['gcc'],
    'verbose':          ['0', '1']
}


def validate_option(key, value, env):
    if key not in cmd_options:
        raise ValueError("Unknown switch {0}.".format(key))
    if value not in cmd_options[key]:
        raise ValueError("Unknown {0} \"{1}\". Options are {2}.\n\n".format(
            key, value, ','.join(cmd_options[key])))


cmd_vars = Variables()
cmd_vars.AddVariables(
    (
        'board',                                           # key
        '',                                                # help
        None,                                              # default
        validate_option,                                   # validator
        None,                                              # converter
    ),
    (
        'project',                                         # key
        '',                                                # help
        None,                                              # default
        validate_option,                                   # validator
        None,                                              # converter
    ),
    (
        'bootload',                                        # key
        '',                                                # help
        '',                                                # default
        None,                                              # validator
        None,                                              # converter
    ),
    (
        'compiler',                                        # key
        '',                                                # help
        cmd_options['verbose'][0],                         # default
        validate_option,                                   # validator
        None,                                              # converter
    ),
    (
        'params',                                          # key
        '',                                                # help
        '',                                                # default
        None,                                              # validator
        None,                                              # converter
    ),
    (
        'verbose',                                         # key
        '',                                                # help
        cmd_options['verbose'][0],                         # default
        validate_option,                                   # validator
        int,                                               # converter
    )
)

# Define default environment to support GCC
env = DefaultEnvironment(ENV=os.environ, tools=[
                         'cc', 'c++', 'ar', 'gnulink'], variables=cmd_vars)

Export('env')

env.SConscript(
    'SConscript',
    exports=['env'],
)