{
    "custom_targets": {
        "base": {
            "inherits": ["Target"],
            "core": "Cortex-M0"
        },
        "b1": {
            "inherits": ["base"],
            "extra_labels_add": ["b1_label"]
        },
        "b2": {
            "inherits": ["base"],
            "extra_labels_add": ["b2_label"]
        },
        "both": {
            "inherits": ["b1", "b2"]
        }
    },
    "config": {
        "app1": "v_app1",
        "app2": "v_app2"
    },
    "target_overrides": {
        "b1_label": {
            "app1": "v_app1[b1_label]",
            "app_wrong": "v_dummy"
        },
        "b2_label": {
            "app2": "v_app2[b2_label]"
        }
    }
}