cmake: dpdk: only append common dir if it has been found

Signed-off-by: Clément Péron <peron.clem@gmail.com>

diff --git a/cmake/modules/Finddpdk.cmake b/cmake/modules/Finddpdk.cmake
index dd28191a5e4bf6b8c40703b7725d77b5b8365a62..ad2ec2548c17e637a5c4ad87aa6aed8ba378048d 100644 (file)
--- a/cmake/modules/Finddpdk.cmake
+++ b/cmake/modules/Finddpdk.cmake
@@ -31,7 +31,7 @@ else()
       dpdk
       include)
   set(dpdk_INCLUDE_DIRS "${dpdk_config_INCLUDE_DIR}")
-  if(NOT dpdk_config_INCLUDE_DIR STREQUAL dpdk_common_INCLUDE_DIR)
+  if(dpdk_common_INCLUDE_DIR AND NOT dpdk_config_INCLUDE_DIR STREQUAL dpdk_common_INCLUDE_DIR)
     list(APPEND dpdk_INCLUDE_DIRS "${dpdk_common_INCLUDE_DIR}")
   endif()
 endif()