zeromq plugins: fix typo
@@ -13,7 +13,7 @@ if (ZMQ_FOUND)
set (SOURCES ${ADAPTER_SRC_FILES})
add_library (${ADAPTER_OBJECT} OBJECT ${SOURCES})
- target_include_directories (${ADAPTER_OBJECT} SYSTEM PUBLIC ${ZMQ_INCLUDE_DIR})
+ target_include_directories (${ADAPTER_OBJECT} SYSTEM PUBLIC ${ZMQ_INCLUDE_DIRS})
# NOTE CMAKE_POSITION_INDEPENDENT_CODE does not seem to work (e.g. CMake 3.9.2 on Travis)
target_compile_options (${ADAPTER_OBJECT} PRIVATE "-fPIC")
