readers.rdb needs eigen

plugins/rdb/CMakeLists.txt

@@ -17,12 +17,12 @@ PDAL_ADD_PLUGIN(libname reader rdb
 )
 target_include_directories(${libname} PRIVATE "${PDAL_VENDOR_DIR}/eigen")
 
-# windows requires explicit linking against 
+# windows requires explicit linking against
 # rdbcpp
 if (WIN32)
 	set(RDB_LIBRARY "rdbcpp")
 endif()
-	
+
 set(RDB_TEST_NAME pdal_io_rdb_reader_test)
 option(BUILD_RDBLIB_TESTS "Build rdblib tests" ON)
 if (WITH_TESTS)
@@ -41,6 +41,8 @@ if (BUILD_RDBLIB_TESTS)
             ${PROJECT_BINARY_DIR}/plugins/rdb/test
             ${PROJECT_SOURCE_DIR}/plugins/rdb/io
             ${RDB_INCLUDE_CPP_DIR}
+            ${PDAL_VENDOR_DIR}/eigen
+
     )
 endif()
 endif()