Jim Harris f896aa6f10 env_dpdk: add rte_rcu library dependency
rte_hash depends on rte_rcu starting in upcoming
DPDK 20.11 release.  rte_rcu was only added in
DPDK 19.05 release, so we need to check if it
exists before linking it.

Fixes issue #1661.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I7e343c6f964b03cc62484b57803a3bad00f80288
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4947
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
2020-10-29 10:39:05 +00:00
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