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Propagate a clock from .LIB of a block

Hello all,

I am trying to synthesize a module which has a .LIB for one of the blocks. The block has internal clock generators and requires to create a clock on one of the block's ports. I can create the clocks in the top-level by providing hierarchical path. However, I am not able to see the generated clocks come out of the .LIB.

set_propagated_clocks works in the Back_End environment - Encounter/ETS. But this is not available for RC.

Does anybody have an idea how to constrain/propagate the clocks from .LIB?

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