colcon build编译问题

[yudonghou123]

@yudonghou123 函数其实都存在，但是一直报这个错误

[小鱼]

@yudonghou123 贴下代码，根据过往经验是代码问题

[yudonghou123]

@小鱼 我又重新写了一个节点，也是一样的错误，只要将ADS协议作为依赖包就出现这个，代码如下

#include <memory>
#include "rclcpp/rclcpp.hpp"
#include "auv_msgs/msg/ctd.hpp"
#include "../lib/ADS/AdsLib/AdsLib.h"
#include "../lib/ADS/AdsLib/AdsVariable.h"
#include "../lib/ADS/AdsLib/AdsNotification.h"

using namespace std::chrono_literals;

class ctd_sensor_pub : public rclcpp::Node
{
public:
    ctd_sensor_pub() : Node("ctd_sensor_publisher")
    {
        RCLCPP_INFO(this->get_logger(), "CTD RUNNING");

        ctd_publisher_ = this->create_publisher<auv_msgs::msg::CTD>("ctd_data", 100);
        ctd_timer_ = this->create_wall_timer(0.1s, std::bind(&ctd_sensor_pub::ctd_time_callback, this));
    }

private:
    void ctd_time_callback()
    {
        static const AmsNetId remoteNetId{192, 168, 0, 2, 1, 1};
        static const char remoteIpV4[] = "192.168.0.2";

        AdsDevice route{remoteIpV4, remoteNetId, AMSPORT_R0_PLC_TC3};

        AdsVariable<float> read1Var{route, "Sensor.TDDataChannel[1]"};
        AdsVariable<float> read2Var{route, "Sensor.TDDataChannel[2]"};
        auto ctd_data = auv_msgs::msg::CTD();
        ctd_data.temperature = read1Var;
        ctd_data.pressure = read2Var;
        RCLCPP_INFO(this->get_logger(), "温深仪传送数据为：温度-%f,压力-%f", ctd_data.temperature, ctd_data.pressure);
        ctd_publisher_->publish(ctd_data);
    }
    rclcpp::TimerBase::SharedPtr ctd_timer_;
    rclcpp::Publisher<auv_msgs::msg::CTD>::SharedPtr ctd_publisher_;
};

int main(int argc, char *argv[])
{
    rclcpp::init(argc, argv);
    rclcpp::spin(std::make_shared<ctd_sensor_pub>());
    rclcpp::shutdown();
    return 0;
}

终端输出为：

Starting >>> auv_msgs
Finished <<< auv_msgs [0.56s]                     
Starting >>> auv_localize
--- stderr: auv_localize                              
/usr/bin/ld: CMakeFiles/ctd_sensor_pub.dir/src/ctd_sensor_pub.cpp.o: in function `ctd_sensor_pub::ctd_time_callback()':
/home/user2/auv533_ws/src/auv_localize/src/ctd_sensor_pub.cpp:24: undefined reference to `AmsNetId::AmsNetId(unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char)'
/usr/bin/ld: /home/user2/auv533_ws/src/auv_localize/src/ctd_sensor_pub.cpp:27: undefined reference to `AdsDevice::AdsDevice(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, AmsNetId, unsigned short)'
/usr/bin/ld: CMakeFiles/ctd_sensor_pub.dir/src/ctd_sensor_pub.cpp.o: in function `AdsVariable<float>::AdsVariable(AdsDevice const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
/home/user2/auv533_ws/src/auv_localize/src/../lib/ADS/AdsLib/AdsVariable.h:15: undefined reference to `AdsDevice::GetHandle(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const'
/usr/bin/ld: CMakeFiles/ctd_sensor_pub.dir/src/ctd_sensor_pub.cpp.o: in function `AdsVariable<float>::Read(unsigned long, void*) const':
/home/user2/auv533_ws/src/auv_localize/src/../lib/ADS/AdsLib/AdsVariable.h:53: undefined reference to `AdsDevice::ReadReqEx2(unsigned int, unsigned int, unsigned long, void*, unsigned int*) const'
collect2: error: ld returned 1 exit status
gmake[2]: *** [CMakeFiles/ctd_sensor_pub.dir/build.make:176：ctd_sensor_pub] 错误 1
gmake[1]: *** [CMakeFiles/Makefile2:210：CMakeFiles/ctd_sensor_pub.dir/all] 错误 2
gmake: *** [Makefile:146：all] 错误 2
---
Failed   <<< auv_localize [4.10s, exited with code 2]

Summary: 1 package finished [4.81s]
  1 package failed: auv_localize
  1 package had stderr output: auv_localize

他的这个PLC的通讯库是在这里：ADS通讯协议

[yudonghou123]

@小鱼
如果是上面那个程序：
Ads_Interface.h代码为：

#ifndef HEADER_H_ADS_INTERFACE
#define HEADER_H_ADS_INTERFACE
#include <yaml-cpp/yaml.h>
#include <cstdlib>
#include "../lib/ADS/AdsLib/standalone/AdsDef.h" 
#include "../lib/ADS/AdsLib/AdsLib.h"
#include "../lib/ADS/AdsLib/AdsVariable.h"
#include <time.h>
#include <boost/thread/thread.hpp>
#include <variant>
#include <mutex>
#include <stdio.h>
#include <cstring>

using namespace std;
class RosAds_Interface
{
    enum{
        BOOL,
        UINT8_T,
        INT8_T,
        UINT16_T,
        INT16_T,
        UINT32_T,
        INT32_T,
        INT64_T,
        FLOAT,
        DOUBLE,
        DATE,
    };

public :

  using variant_t = variant<bool, uint8_t, int8_t, uint16_t, int16_t, uint32_t, int32_t, int64_t, float, double, tm>;

    /**
     * @brief RosAds_Interface simple consctructor
     */
    RosAds_Interface();

    ~RosAds_Interface();

    /**
     * @brief adsWriteValue writes on a single variable
     * @param name name of the variable to write on
     * @param value value of the variable to write on
     * @return true if the writing succeded
     * @return false otherwise
     */
    bool adsWriteValue(string name, variant_t value);

    /**
     * @brief adsReadValue reads a single variable's value
     * @param varname name of the variable to read
     * @return variant_t value of the variable
     */
    variant_t adsReadValue(string varname);

    /**
     * @brief adsReadVariables reads multiple variables' value
     * @param varnames names of the variables to read
     * @return vector<variant_t> values of the variables
     */
    vector<variant_t> adsReadVariables(vector<string> varnames);

    /**
     * @brief factory (re)-create an IADS variable
     * @param varname the alias of the variable to (re)-create
     * @return true if the creation succeeded
     */
    bool factory(string varname);

    /**
     * @brief convert_type_from_string gets the type from a string
     * @param type the type as string
     * @return the type as int
     * @return -1 if not a type
     */
    int convert_type_from_string(string type);

    /**
     * @brief setRemoteNetID set the remote NetID
     * @param netId netID to set as string of type: xxx.xxx.xxx.xxx.xxx.xxx
     */
    void setRemoteNetID(string netId){m_remoteNetId = netId;}

    /**
     * @brief getRemoteNetID get the remote NetID
     * @return netId netID parameter
     */
    string getRemoteNetID(){return m_remoteNetId;}

    /**
     * @brief setRemoteIPV4 set the remoteIPV4
     * @param address IPV4 to set as string of type: xxx.xxx.xxx.xxx
     */
    void setRemoteIPV4(string address){m_remoteIpV4 = address;}

    /**
     * @brief getRemoteIPV4 get the remote IPV4
     * @return IPV4 IPV4 parameter
     */
    string getRemoteIPV4(){return m_remoteIpV4;}

    /**
     * @brief setLocalNetID set the local NetID
     * @param netId netID to set as string of type: xxx.xxx.xxx.xxx.xxx.xxx
     */
    void setLocalNetID(string netId){m_localNetId_param = netId;
                                  AdsSetLocalAddress(AmsNetId(m_localNetId_param));}

    /**
     * @brief getLocalNetID get the local NetID
     * @return netId netID parameter
     */
    string getLocalNetID(){return m_localNetId_param;}

    /**
     * @brief getVariablesMap
     * @return a copy of the variables memory
     */
    map<string, pair<string, variant_t>> getVariablesMap(){return m_variables_map;}

    /**
     * @brief updateMemory update the variables memory
     */
    void updateMemory();

    /**
     * @brief initRoute initialize a connection to the ADS device
     */
    void initRoute();

    /**
     * @brief connectionCheck
     *
     * Tries to get ADS state
     * If the ADS is not running setsm_device state to false, to true otherwise
     * If the ADS is not running or connection failed, tries to establish a new connection
     * If connection was down and is up again, recreates all IADS variables (get the new handles)
     *
     * @return ads state
     */
    int connectionCheck();

    /**
     * @brief getState
     * @return true if data published are valid
     * @return false otherwise
     */
    bool getState(){return(m_device_state);}

    /**
     * @brief getADSState
     * @return return current ADS state
     */
    int getADSState(){return(m_ads_state);}

    /**
     * @brief bindPLcVar creates IADS variables for aliased variables given in configuration file
     * @return true if aliasing succeeded
     * @return false otherwise
     */
    bool bindPLcVar();

    /**
     * @brief checkVariableType
     * @param varname the name of the variable to check the type of
     * @return the type of the variable as int
     * @return -1 if variable does not exist
     */
    int checkVariableType(string varname);

    /**
     * @brief acquireVariables get all ADS variables from the device
     */
    void acquireVariables(){m_VariableADS = m_route->GetDeviceAdsVariables();}
    /*GetDeviceAdsVariables();}*/

    /**
     * @brief setName set the name of the device for configuration
     * @param name the name of the device
     */
    void setName(string name){m_name = name;}

    /**
     * @brief setFile set the configuration file the device is configured from
     * @param config_file the full path to the YAML configuration file
     */
    void setFile(string config_file){m_config_file = config_file;}


private:

    string m_remoteNetId;                                  /*!< the NetID of the ADS device                                                                                     */
    string m_remoteIpV4;                                   /*!< the IPV4 of the ADS device                                                                                      */
    string m_localNetId_param;                             /*!< the local net ID                                                                                                */
    double m_temp;                                         /*!< a temp value for reading a variable value                                                                       */
    string m_name;                                         /*!< the name of the device for configuration                                                                        */
    string m_config_file;                                  /*!< the configuration file to use                                                                                   */
    int m_ads_state;                                       /*!< the last known state of ADS                                                                                     */

    AmsNetId* m_AmsNetIdremoteNetId;                       /*!< the NetID structure of the ADS device                                                                           */
    AdsDevice* m_route;                                    /*!< the ADS device route                                                                                            */
    bool m_device_state{true};                             /*!< the last known validity state of the values                                                                     */


    //Mutex utile pour la communication
    mutex m_ComMutex;                                      /*!< Communication mutex                                                                                             */
    mutex m_MemMutex;                                      /*!< memory mutex                                                                                                    */

    map<string,string> m_VariableADS;                      /*!< a map with ADS name as key and the variable type as value */
    map<string,string> m_Alias_map;                        /*!< a map with alias name as key and ADS names as value */
    map<string,pair<int, string>> m_VariableMapping;       /*!< a map with alias name as key and both representation of it's type a value                                       */
    map<string,IAdsVariable*> m_RouteMapping;              /*!< a map with alias name as key and the IADS variable as value                                                     */
    map<string, pair<string, variant_t>> m_variables_map;  /*!< a map with alias name as key and a pair with the type of the variable as string and it's value in it's own type */
    };
#endif

Ads_Interface.cpp代码为：

#include "Ads_Interface.h"

using namespace std;

/**
 * @brief RosAds_Interface simple consctructor
 */
RosAds_Interface::RosAds_Interface()
{
}

RosAds_Interface::~RosAds_Interface()
{
  if(m_route)
  {
    delete m_route;
  }
  if(m_AmsNetIdremoteNetId)
  {
    delete m_AmsNetIdremoteNetId;
  }

  for(map<string,IAdsVariable*>::iterator it = m_RouteMapping.begin(); it != m_RouteMapping.end(); ++it)
  {
     delete it->second;
  }
}

/**
 * @brief adsWriteValue writes on a single variable
 * @param name name of the variable to write on
 * @param value value of the variable to write on
 * @return true if the writing succeded
 * @return false otherwise
 */
bool RosAds_Interface::adsWriteValue(string name, variant_t value){

  int varType = checkVariableType(name);
  bool dataCorrect = true;
  bool bresult = true;
  auto no_issue = true;
  if( m_VariableMapping.find(name) == m_VariableMapping.end()){
    dataCorrect =  false;
    bresult =  false;
  }
  else if (m_VariableMapping[name].first == varType && m_device_state)
  {
    m_ComMutex.lock();
    m_MemMutex.lock();
    try
    {
      switch(m_VariableMapping[name].first)
      {
      case BOOL:
      {
          *m_RouteMapping[name] = get<bool>(value);
          break;
      }
      case UINT8_T:
      {
          *m_RouteMapping[name] = get<uint8_t>(value);
          break;
      }
      case INT8_T:
      {
          *m_RouteMapping[name] = get<int8_t>(value);
          break;
      }
      case UINT16_T:
      {
          *m_RouteMapping[name] = get<uint16_t>(value);
          break;
      }
      case INT16_T:
      {
          *m_RouteMapping[name] = get<int16_t>(value);
          break;
      }
      case UINT32_T:
      {
          *m_RouteMapping[name] = get<uint32_t>(value);
          break;
      }
      case INT32_T:
      {
          *m_RouteMapping[name] = get<int32_t>(value);
          break;
      }
      case INT64_T:
      {
          *m_RouteMapping[name] = get<int64_t>(value);
          break;
      }
      case FLOAT:
      {
          *m_RouteMapping[name] = get<float>(value);
          break;
      }
      case DOUBLE:
      {
          *m_RouteMapping[name] = get<double>(value);
          break;
      }
      case DATE:
      {
          tm temp = get<tm>(value);
          *m_RouteMapping[name] = mktime(&temp);
          break;
      }
      default:
      {
            no_issue = false;
      }
      }
    }
    catch(AdsException e)
    {
        no_issue = false;
    }
    m_MemMutex.unlock();
    m_ComMutex.unlock();
  }
  else
  {
    factory(name);
  }
  if(!no_issue){
      factory(name);
  }

  if(!dataCorrect) {
    bresult =  false;
  }
  return bresult;
}

/**
 * @brief adsReadValue reads a single variable's value
 * @param varName name of the variable to read
 * @return variant_t value of the variable
 */
RosAds_Interface::variant_t RosAds_Interface::adsReadValue(string name)
{
  variant_t result;

  if(m_RouteMapping.find(name) != m_RouteMapping.end())
  {
      auto no_issue = true;
      m_ComMutex.lock();
      m_MemMutex.lock();
      if(m_device_state)
      {
          try
          {
              if(m_RouteMapping[name])
              {
                  m_RouteMapping[name]->ReadValue(&m_temp);

                  switch(m_VariableMapping[name].first)
                  {
                  case BOOL:
                  {
                      result =(bool)m_temp;
                      break;
                  }
                  case UINT8_T:
                  {
                      result = (uint8_t)m_temp;
                      break;
                  }
                  case INT8_T:
                  {
                      result = (int8_t)m_temp;
                      break;
                  }
                  case UINT16_T:
                  {
                      result = (uint16_t)m_temp;
                      break;
                  }
                  case INT16_T:
                  {
                      result = (int16_t)m_temp;
                      break;
                  }
                  case UINT32_T:
                  {
                      result = (uint32_t)m_temp;
                      break;
                  }
                  case INT32_T:
                  {
                      result = (int32_t)m_temp;
                      break;
                  }
                  case INT64_T:
                  {
                      result = (int64_t)m_temp;
                      break;
                  }
                  case FLOAT:
                  {
                      result = (float)m_temp;
                      break;
                  }
                  case DOUBLE:
                  {
                      result = (double)m_temp;
                      break;
                  }
                  case DATE:
                  {
                      result = (uint32_t)m_temp;
                      break;
                  }
                  default:
                  {

                  }
                  }
              }
              else
              {
                  no_issue = false;
              }
              }
              catch(...)
              {
                no_issue = false;
              }
      }
      m_MemMutex.unlock();
      m_ComMutex.unlock();
      if(!no_issue)
      {
          factory(name);
      }
  }
  return result;
}

/**
 * @brief adsReadVariables reads multiple variables' value
 * @param varNames names of the variables to read
 * @return vector<variant_t> values of the variables
 */
vector<RosAds_Interface::variant_t> RosAds_Interface::adsReadVariables(vector<string> varNames)
{
  vector<variant_t> result;

  for (auto& name: varNames)
  {
    result.push_back(adsReadValue(name));
  }

  return result;
}

/**
 * @brief factory (re)-create an IADS variable
 * @param varName the alias of the variable to (re)-create
 * @return true if the creation succeeded
 */
bool RosAds_Interface::factory(string  varName)
{
    bool result = false;
    auto no_issue = true;
    m_MemMutex.lock();
    try {
        string type = m_VariableADS[m_Alias_map[varName]];
        do{
            if(m_RouteMapping[varName])
            {
                delete m_RouteMapping[varName];
            }
          if(type == "BOOL"){
            m_RouteMapping[varName] = new AdsVariable<bool>(*m_route, m_Alias_map[varName]);
            result = true;
            break;
          }
          if(type == "BYTE" || type == "USINT"){
            m_RouteMapping[varName] = new AdsVariable<uint8_t>(*m_route, m_Alias_map[varName]);
            result = true;
            break;
          }
          if(type == "SINT"){
            m_RouteMapping[varName] = new AdsVariable<int8_t>(*m_route, m_Alias_map[varName]);
            result = true;
            break;
          }
          if(type == "WORD" || type == "UINT"){
            m_RouteMapping[varName] = new AdsVariable<uint16_t>(*m_route, m_Alias_map[varName]);
            result = true;
            break;
          }
          if(type == "INT"){
            m_RouteMapping[varName] = new AdsVariable<int16_t>(*m_route, m_Alias_map[varName]);
            result = true;
            break;
          }
          if(type == "DWORD" || type == "UDINT" || type == "DATE" || type == "TIME" || type == "TIME_OF_DAY" || type == "LTIME"){
            m_RouteMapping[varName] = new AdsVariable<uint32_t>(*m_route, m_Alias_map[varName]);
            result = true;
            break;
          }
          if(type == "DINT"){
            m_RouteMapping[varName] = new AdsVariable<int32_t>(*m_route, m_Alias_map[varName]);
            result = true;
            break;
          }
          if(type == "LINT"){
            m_RouteMapping[varName] = new AdsVariable<int64_t>(*m_route, m_Alias_map[varName]);
            result = true;
            break;
          }
          if(type == "REAL"){
            m_RouteMapping[varName] = new AdsVariable<float>(*m_route, m_Alias_map[varName]);
            result = true;
            break;
          }
          if(type == "LREAL"){
            m_RouteMapping[varName] = new AdsVariable<double>(*m_route, m_Alias_map[varName]);
            result = true;
            break;
          }
        }
        while(false);
    } catch (...) {
        no_issue = false;
    }
    m_MemMutex.unlock();

    if(!no_issue){
        m_ads_state = false;
        connectionCheck();
    }

    return result;
}

/**
 * @brief convert_type_from_string gets the type from a string
 * @param type the type as string
 * @return the type as int
 * @return -1 if not a type
 */
int RosAds_Interface::convert_type_from_string(string type)
{
   int result = -1;
   do
   {
       if(type == "BOOL")
       {
           result = BOOL;
           break;
       }
       if(type == "BYTE" || type == "USINT")
       {
           result = UINT8_T;
           break;
       }
       if(type == "SINT")
       {
           result = INT8_T;
           break;
       }
       if(type == "WORD" || type == "UINT")
       {
           result = UINT16_T;
           break;
       }
       if(type == "INT")
       {
           result = INT16_T;
           break;
       }
       if(type == "DWORD" || type == "UDINT")
       {
           result = UINT32_T;
           break;
       }
       if(type == "DINT")
       {
           result = INT32_T;
           break;
       }
       if(type == "LINT")
       {
           result = INT64_T;
           break;
       }
       if(type == "REAL")
       {
           result = FLOAT;
           break;
       }
       if(type == "LREAL")
       {
           result = DOUBLE;
           break;
       }
       if(type == "DATE")
       {
           result = DATE;
           break;
       }
   }
   while(false);
   return result;
}

/**
 * @brief updateMemory update the variables memory
 */
void RosAds_Interface::updateMemory()
{
    for(auto &[name, pair]: m_variables_map)
    {
        pair.second = adsReadValue(name);
    }
}

/**
 * @brief initRoute initialize a connection to the ADS device
 */
void RosAds_Interface::initRoute()
{
  m_AmsNetIdremoteNetId= new AmsNetId(m_remoteNetId);
  m_route = new AdsDevice(m_remoteIpV4.c_str(),*m_AmsNetIdremoteNetId, AMSPORT_R0_PLC_TC3);
}

/**
 * @brief connectionCheck
 *
 * Tries to get ADS state
 * If the ADS is not running setsm_device state to false, to true otherwise
 * If the ADS is not running or connection failed, tries to establish a new connection
 * If connection was down and is up again, recreates all IADS variables (get the new handles)
 *
 * @return ads state
 */
int RosAds_Interface::connectionCheck()
{
    auto result = false;
    AdsDeviceState test;
    auto temp_state = m_device_state;
    m_ComMutex.lock();
    try {
        test = m_route->GetState();
        result = (test.ads == ADSSTATE_RUN);
        m_ads_state = (uint16_t)test.ads;
    } catch (...) {
        m_ads_state = ADSSTATE_INVALID;
    }

    if (!result) //recovery
    {
        if(m_route)
        {
          delete m_route;
        }
        if(m_AmsNetIdremoteNetId)
        {
          delete m_AmsNetIdremoteNetId;
        }
        initRoute();
    }
    m_ComMutex.unlock();

    if(result && !temp_state) //recreate ADSVariables if connexion is re-established
    {
        acquireVariables();
        for(auto &[name, alias]: m_VariableMapping)
        {
            factory(name);
        }
    }

    m_device_state = result;

    return (int)test.ads;
}

/**
 * @brief bindPLcVar creates IADS variables for aliased variables given in configuration file
 * @return true if aliasing succeeded
 * @return false otherwise
 */
bool RosAds_Interface::bindPLcVar()
{
  bool bresult = false;
  YAML::Node config = YAML::LoadFile(m_config_file);
  if (config[m_name])
  {

    //Read each alias with corresponding ADS name
    for(YAML::const_iterator element=config[m_name]["variables"].begin();element!=config[m_name]["variables"].end();++element)
    {
      string adsName = element->first.as<string>();
      string alias = element->second.as<string>();
      //Check if ADS name is part of downloaded PLC ADS list
      if ( m_VariableADS.find(adsName) == m_VariableADS.end() )
      {
          continue;
      }

      string type = m_VariableADS[adsName];
      m_VariableMapping[alias] = pair<int, string>(convert_type_from_string(type), type);
      m_variables_map[alias] = pair<string, variant_t>(type, variant_t());
      m_Alias_map[alias] = adsName;
      factory(alias);
    }
    bresult = true;
  }
  else
  {

  }
    return bresult;
}

/**
 * @brief checkVariableType
 * @param varName the name of the variable to check the type of
 * @return the type of the variable as int
 * @return -1 if variable does not exist
 */
int RosAds_Interface::checkVariableType(string varName){
  int varType = -1;
    map<string,pair<int, string>>::iterator it;
     it= m_VariableMapping.find(varName);
  if(it != m_VariableMapping.end())
  {
    varType = it->second.first;
  }
  return varType;
}

他其中依赖包的AdsVariable.h代码为：

// SPDX-License-Identifier: MIT
/**
   Copyright (c) 2020 - 2022 Beckhoff Automation GmbH & Co. KG
 */

#pragma once

#include "AdsDevice.h"
#include "cstring"


struct IAdsVariable {

  virtual void operator=(const bool& value){}
  virtual void operator=(const uint8_t& value){}
  virtual void operator=(const int8_t& value){}
  virtual void operator=(const uint16_t& value){}
  virtual void operator=(const int16_t& value){}
  virtual void operator=(const uint32_t& value){}
  virtual void operator=(const int32_t& value){}
  virtual void operator=(const uint64_t& value){}
  virtual void operator=(const int64_t& value){}
  virtual void operator=(const float& value){}
  virtual void operator=(const double& value){}
 
  virtual void ReadValue(void *res){}
  virtual ~IAdsVariable(){}
}; 




template<typename T>
struct AdsVariable  : public IAdsVariable{
    AdsVariable(const AdsDevice& route, const std::string& symbolName)
        : m_Route(route),
        m_IndexGroup(ADSIGRP_SYM_VALBYHND),
        m_Handle(route.GetHandle(symbolName))
    {}

    AdsVariable(const AdsDevice& route, const uint32_t group, const uint32_t offset)
        : m_Route(route),
        m_IndexGroup(group),
        m_Handle(route.GetHandle(offset))
    {}

    operator T() const
    {
        T buffer;
        Read(sizeof(buffer), &buffer);
        return buffer;
    }

    void ReadValue(void *res) override
    {
	T buffer;
    Read(sizeof(buffer), &buffer);
    memcpy(res, &buffer, sizeof(T));
    }

    void operator=(const T& value) override
    {
        Write(sizeof(T), &value);
    }

    template<typename U, size_t N>
    operator std::array<U, N>() const
    {
        std::array<U, N> buffer;
        Read(sizeof(U) * N, buffer.data());
        return buffer;
    }

    template<typename U, size_t N>
    void operator=(const std::array<U, N>& value) const
    {
        Write(sizeof(U) * N, value.data());
    }

    void Read(const size_t size, void* data) const
    {
        uint32_t bytesRead = 0;
        auto error = m_Route.ReadReqEx2(m_IndexGroup,
                                        *m_Handle,
                                        size,
                                        data,
                                        &bytesRead);

        if (error || (size != bytesRead)) {
            throw AdsException(error);
        }
    }

    void Write(const size_t size, const void* data) const
    {
        auto error = m_Route.WriteReqEx(m_IndexGroup, *m_Handle, size, data);
        if (error) {
            throw AdsException(error);
        }
    }
private:
    const AdsDevice& m_Route;
    const uint32_t m_IndexGroup;
    const AdsHandle m_Handle;
};

代码有点多，已经困扰我好几天了，我原先以为gcc和G++的版本导致的，但是我看了看gcc和g++的版本都是11.3一样的，我用的这个倍服的PLC提供的通讯库和我ROS2结合的时候感觉问题好多，万分感激

[小鱼]

@yudonghou123 在 colcon build编译问题 中说：

#include "../lib/ADS/AdsLib/AdsLib.h"
#include "../lib/ADS/AdsLib/AdsVariable.h"
#include "../lib/ADS/AdsLib/AdsNotification.h"

把前面的..去掉，修改CmakeLists.txt 将lib文件夹添加进去，然后
#include "ADS/AdsLib/AdsNotification.h" 引用

[yudonghou123]

@小鱼 好的，大佬，我通过add_subdirectory(lib/ADS/AdsLib)添加好像不管用

cmake_minimum_required(VERSION 3.8)
project(auv_localize)

if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
  add_compile_options(-Wall -Wextra -Wpedantic)
endif()
find_package(Threads REQUIRED)
set(CMAKE_BUILD_TYPE debug)
add_subdirectory(lib/ADS/AdsLib)

find_package(ament_cmake REQUIRED)
find_package(rclcpp REQUIRED)
find_package(auv_msgs REQUIRED)
find_package(geometry_msgs REQUIRED)
find_package(std_msgs REQUIRED)
find_package(message_filters REQUIRED)


add_executable(localize_sensor_info_pub src/localize_sensor_info_pub.cpp)
target_include_directories(localize_sensor_info_pub PUBLIC
  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
  $<INSTALL_INTERFACE:include>)
target_compile_features(localize_sensor_info_pub PUBLIC c_std_99 cxx_std_17)  # Require C99 and C++17
ament_target_dependencies(
  localize_sensor_info_pub
  "rclcpp"
  "std_msgs"
  "auv_msgs"
)

add_executable(sensor_info_sub src/sensor_info_sub.cpp)
target_include_directories(sensor_info_sub PUBLIC
  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
  $<INSTALL_INTERFACE:include>)
target_compile_features(sensor_info_sub PUBLIC c_std_99 cxx_std_17)  # Require C99 and C++17
ament_target_dependencies(
  sensor_info_sub
  "rclcpp"
  "std_msgs"
  "auv_msgs"
  "message_filters"
)

add_executable(ctd_sensor_pub src/ctd_sensor_pub.cpp)
target_include_directories(ctd_sensor_pub PUBLIC
  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
  $<INSTALL_INTERFACE:include>)
target_compile_features(ctd_sensor_pub PUBLIC c_std_99 cxx_std_17)  # Require C99 and C++17
ament_target_dependencies(
  ctd_sensor_pub
  "rclcpp"
  "std_msgs"
  "auv_msgs"
  "message_filters"
)

install(TARGETS localize_sensor_info_pub ctd_sensor_pub
  DESTINATION lib/${PROJECT_NAME})
install(TARGETS ctd_sensor_pub
  ARCHIVE DESTINATION lib
  LIBRARY DESTINATION lib
  RUNTIME DESTINATION lib/${PROJECT_NAME})

#install(DIRECTORY
# config
# DESTINATION share/${PROJECT_NAME}/)

if(BUILD_TESTING)
  find_package(ament_lint_auto REQUIRED)
  # the following line skips the linter which checks for copyrights
  # comment the line when a copyright and license is added to all source files
  set(ament_cmake_copyright_FOUND TRUE)
  # the following line skips cpplint (only works in a git repo)
  # comment the line when this package is in a git repo and when
  # a copyright and license is added to all source files
  set(ament_cmake_cpplint_FOUND TRUE)
  ament_lint_auto_find_test_dependencies()
endif()

ament_package()

[yudonghou123]

@小鱼 成功了，多谢大佬，需要在cmakelist文件里添加一个add_dependencies(ros_ads_node ads)以及添加一个target_link_libraries，cmakelist文件如下：

cmake_minimum_required(VERSION 3.8)
project(auv_localize)

if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
  add_compile_options(-Wall -Wextra -Wpedantic)
endif()

set(THREADS_PREFER_PTHREAD_FLAG ON)

find_package(Threads REQUIRED)

set(CMAKE_BUILD_TYPE debug)
add_subdirectory(lib/ADS/AdsLib)


find_package(ament_cmake REQUIRED)
find_package(rclcpp REQUIRED)
find_package(auv_msgs REQUIRED)
find_package(geometry_msgs REQUIRED)
find_package(std_msgs REQUIRED)
find_package(message_filters REQUIRED)

add_executable(localize_sensor_info_pub src/localize_sensor_info_pub.cpp)
target_include_directories(localize_sensor_info_pub PUBLIC
  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
  $<INSTALL_INTERFACE:include>)
target_compile_features(localize_sensor_info_pub PUBLIC c_std_99 cxx_std_17)  # Require C99 and C++17
ament_target_dependencies(
  localize_sensor_info_pub
  "rclcpp"
  "std_msgs"
  "auv_msgs"
)

add_executable(sensor_info_sub src/sensor_info_sub.cpp)
target_include_directories(sensor_info_sub PUBLIC
  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
  $<INSTALL_INTERFACE:include>)
target_compile_features(sensor_info_sub PUBLIC c_std_99 cxx_std_17)  # Require C99 and C++17
ament_target_dependencies(
  sensor_info_sub
  "rclcpp"
  "std_msgs"
  "auv_msgs"
  "message_filters"
)
add_executable(ctd_sensor_pub src/ctd_sensor_pub.cpp)
add_dependencies(ctd_sensor_pub  ads)
target_compile_features(ctd_sensor_pub PUBLIC c_std_99 cxx_std_17)  # Require C99 and C++17
ament_target_dependencies(
  ctd_sensor_pub
  "rclcpp"
  "std_msgs"
  "auv_msgs"
  "message_filters"
)
target_include_directories(ctd_sensor_pub PUBLIC
  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
  $<INSTALL_INTERFACE:include>)

target_link_libraries(ctd_sensor_pub ${ament_LIBRARIES} ads -lpthread)

install(TARGETS localize_sensor_info_pub ctd_sensor_pub
  DESTINATION lib/${PROJECT_NAME})
install(TARGETS ctd_sensor_pub
  ARCHIVE DESTINATION lib
  LIBRARY DESTINATION lib
  RUNTIME DESTINATION lib/${PROJECT_NAME})
 
#install(DIRECTORY
# config
# DESTINATION share/${PROJECT_NAME}/)

if(BUILD_TESTING)
  find_package(ament_lint_auto REQUIRED)
  # the following line skips the linter which checks for copyrights
  # comment the line when a copyright and license is added to all source files
  set(ament_cmake_copyright_FOUND TRUE)
  # the following line skips cpplint (only works in a git repo)
  # comment the line when this package is in a git repo and when
  # a copyright and license is added to all source files
  set(ament_cmake_cpplint_FOUND TRUE)
  ament_lint_auto_find_test_dependencies()
endif()

ament_package()

终于编译成功了，多谢大佬，但是大佬，我在ros2 run这个节点时出现这样一个问题：

ros2 run auv_localize ctd_sensor_pub

终端输出：

/home/user2/auv533_ws/install/auv_localize/lib/auv_localize/ctd_sensor_pub: error while loading shared libraries: libads.so: cannot open shared object file: No such file or directory
[ros2run]: Process exited with failure 127

希望大佬提醒一下，万分感激

[yudonghou123]

@小鱼 大佬，在编译时出现这样的问题了

/home/user2/auv533_ws/install/auv_localize/lib/auv_localize/ctd_sensor_pub: error while loading shared libraries: libads.so: cannot open shared object file: No such file or directory
[ros2run]: Process exited with failure 127

我以为是依赖不在路径上，所以我在bashrc上添加这个lib的路径：

export LD_LIBRARY_PATH=/home/user2/auv533_ws/src/auv_localize/lib:$LD_LIBRARY_PATH

程序的结构如下：

在lib文件夹里编译了ADS的PLC通讯包，结果显示这个包不存在，难道不是依赖包文件的路径问题吗？还是说我cmakelist文件（代码在上面的聊天里）缺少一个配置，我看github上关于其都是在src路径下建立一个lib文件，然后将ADS通讯库放入进行编译，但是到我这里就出现这样的问题了，请大佬提醒一下，万分感激

[小鱼]

@yudonghou123 在 colcon build编译问题 中说：

/home/user2/auv533_ws/install/auv_localize/lib/auv_localize/ctd_sensor_pub

ldd /home/user2/auv533_ws/install/auv_localize/lib/auv_localize/ctd_sensor_pub 看一下，是不是那个ads库没link上，这个库是静态库还是动态库还是源码引入的

[yudonghou123]

@小鱼 在 colcon build编译问题 中说：

ldd /home/user2/auv533_ws/install/auv_localize/lib/auv_localize/ctd_sensor_pub

通过您提供的命令查找结果如下：

linux-vdso.so.1 (0x00007ffeb5ad1000)
	libauv_msgs__rosidl_typesupport_cpp.so => not found
	libads.so => not found
	librclcpp.so => /opt/ros/humble/lib/librclcpp.so (0x00007f21a8c1e000)
	librcl.so => /opt/ros/humble/lib/librcl.so (0x00007f21a8bde000)
	librmw.so => /opt/ros/humble/lib/librmw.so (0x00007f21a8bd2000)
	libtracetools.so => /opt/ros/humble/lib/libtracetools.so (0x00007f21a8bcd000)
	librcutils.so => /opt/ros/humble/lib/librcutils.so (0x00007f21a8bb5000)
	libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f21a898b000)
	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f21a896b000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f21a8741000)
	liblibstatistics_collector.so => /opt/ros/humble/lib/liblibstatistics_collector.so (0x00007f21a873a000)
	librcl_interfaces__rosidl_typesupport_cpp.so => /opt/ros/humble/lib/librcl_interfaces__rosidl_typesupport_cpp.so (0x00007f21a872f000)
	librcl_yaml_param_parser.so => /opt/ros/humble/lib/librcl_yaml_param_parser.so (0x00007f21a8723000)
	librosgraph_msgs__rosidl_typesupport_cpp.so => /opt/ros/humble/lib/librosgraph_msgs__rosidl_typesupport_cpp.so (0x00007f21a871e000)
	libstatistics_msgs__rosidl_typesupport_cpp.so => /opt/ros/humble/lib/libstatistics_msgs__rosidl_typesupport_cpp.so (0x00007f21a8719000)
	librmw_implementation.so => /opt/ros/humble/lib/librmw_implementation.so (0x00007f21a870a000)
	libament_index_cpp.so => /opt/ros/humble/lib/libament_index_cpp.so (0x00007f21a86ff000)
	librcl_logging_interface.so => /opt/ros/humble/lib/librcl_logging_interface.so (0x00007f21a86fa000)
	librcpputils.so => /opt/ros/humble/lib/librcpputils.so (0x00007f21a86ec000)
	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f21a8605000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f21a8e94000)
	librcl_logging_spdlog.so => /opt/ros/humble/lib/librcl_logging_spdlog.so (0x00007f21a85fe000)
	librcl_interfaces__rosidl_typesupport_c.so => /opt/ros/humble/lib/librcl_interfaces__rosidl_typesupport_c.so (0x00007f21a85f3000)
	librcl_interfaces__rosidl_generator_c.so => /opt/ros/humble/lib/librcl_interfaces__rosidl_generator_c.so (0x00007f21a85d7000)
	librosidl_runtime_c.so => /opt/ros/humble/lib/librosidl_runtime_c.so (0x00007f21a85cc000)
	librosidl_typesupport_cpp.so => /opt/ros/humble/lib/librosidl_typesupport_cpp.so (0x00007f21a85c6000)
	libyaml.so => /opt/ros/humble/lib/libyaml.so (0x00007f21a85a4000)
	libspdlog.so.1 => /lib/x86_64-linux-gnu/libspdlog.so.1 (0x00007f21a8527000)
	librosidl_typesupport_c.so => /opt/ros/humble/lib/librosidl_typesupport_c.so (0x00007f21a8521000)
	libbuiltin_interfaces__rosidl_generator_c.so => /opt/ros/humble/lib/libbuiltin_interfaces__rosidl_generator_c.so (0x00007f21a851c000)
	libfmt.so.8 => /lib/x86_64-linux-gnu/libfmt.so.8 (0x00007f21a84fb000)

我觉得是通过源码引入的，因为我在github上下载了这个ADS库，然后在src文件夹中建立了一个lib文件夹，将其放入了

[yudonghou123]

@小鱼 在 colcon build编译问题 中说：

ldd /home/user2/auv533_ws/install/auv_localize/lib/auv_localize/ctd_sensor_pub

成功了，我在创建新的节点时忘记首先对通讯库进行编译了，人麻了，多谢大佬的指点，万分感激