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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def autobuild_arm_program(elfname, test_dir=os.path.join('firmware', 'test'), patch=True):
 """ Build the an ARM module for all targets and build all unit tests. If pcb files are given, also build those. """


    try:
        #Build for all targets
        family = utilities.get_family('module_settings.json')
        family.for_all_targets(family.tile.short_name, lambda x: arm.build_program(family.tile, elfname, x, patch=patch))

        #Build all unit tests
        unit_test.build_units(os.path.join('firmware','test'), family.targets(family.tile.short_name))

        Alias('release', os.path.join('build', 'output'))
        Alias('test', os.path.join('build', 'test', 'output'))
        Default(['release', 'test'])

        autobuild_release(family)

        if os.path.exists('doc'):
            autobuild_documentation(family.tile)

    except IOTileException as e:
        print(e.format())
        sys.exit(1)