public static boolean maybeEnableNative() {
    try {
      useNative = LibGnarkEIP196.ENABLED;
    } catch (UnsatisfiedLinkError | NoClassDefFoundError ule) {
      LOG.info("altbn128 native precompile not available: {}", ule.getMessage());
      useNative = false;
    }
    return useNative;
  }
Attempt to enable the native library for AltBn contracts

@return true if the native library was enabled.
evm/src/main/java/org/hyperledger/besu/evm/precompile/AbstractAltBnPrecompiledContract.java