Add linking to grpc++

CMakeLists.txt

@@ -169,7 +169,7 @@ if("${CMAKE_BUILD_TYPE}" MATCHES "Debug")
 
     add_library(caosdb_grpc SHARED ${GRPC_GENERATED})
     target_link_libraries(caosdb_grpc 
-        gRPC::grpc protobuf::libprotobuf ${Boost_LIBRARIES}
+        gRPC::grpc gRPC::grpc++ protobuf::libprotobuf ${Boost_LIBRARIES}
     )
     target_include_directories(caosdb_grpc PUBLIC
         $<BUILD_INTERFACE:${PROJECT_INCLUDE_DIR}>
@@ -180,7 +180,7 @@ if("${CMAKE_BUILD_TYPE}" MATCHES "Debug")
    add_library(caosdb SHARED ${libcaosdb_INCL} ${libcaosdb_SRC})
 
    target_link_libraries(caosdb 
-        caosdb_grpc gRPC::grpc protobuf::libprotobuf ${Boost_LIBRARIES}
+        caosdb_grpc gRPC::grpc gRPC::grpc++ protobuf::libprotobuf ${Boost_LIBRARIES}
     )
 
     set(LIBCAOSDB caosdb caosdb_grpc)
@@ -188,7 +188,7 @@ else()
     add_library(caosdb
         SHARED ${libcaosdb_INCL} ${libcaosdb_SRC} ${GRPC_GENERATED})
      target_link_libraries(caosdb
-        gRPC::grpc protobuf::libprotobuf ${Boost_LIBRARIES}
+        gRPC::grpc gRPC::grpc++ protobuf::libprotobuf ${Boost_LIBRARIES}
         stdc++fs
     )
      set(LIBCAOSDB caosdb)
@@ -209,7 +209,7 @@ target_include_directories(caosdb PUBLIC
 # ----------
 add_library(ccaosdb SHARED src/ccaosdb.cpp)
 target_link_libraries(ccaosdb
-    gRPC::grpc protobuf::libprotobuf ${Boost_LIBRARIES}
+    gRPC::grpc gRPC::grpc++ protobuf::libprotobuf ${Boost_LIBRARIES}
     ${LIBCAOSDB}
     stdc++fs
 )