Question

我为项目运行‘Topology’ does not name a type DeSiNe [点击进入github页面]，我收到错误$ make build mkdir -m 755 -p obj/Algorithm g++ -Wall -DNO_TIMER -DNO_TRACES -O3 -funroll-loops -finline-functions -fexpensive-optimizations -Isrc -o obj/Algorithm/Algorithm.o -c src/Algorithm/Algorithm.cpp In file included from src/Network/TopologyFactory.h:21:0, from src/Network/Topology.h:25, from src/Network/Flow.h:20, from src/Algorithm/Algorithm.h:20, from src/Algorithm/Algorithm.cpp:14: src/RandomVariables/RandomNumberGenerator.h: In member function ‘double RandomNumberGenerator::generate()’: src/RandomVariables/RandomNumberGenerator.h:158:43: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] return (double) 2.0 - (*(float*) &itemp); ^ In file included from src/Network/Topology.h:25:0, from src/Network/Flow.h:20, from src/Algorithm/Algorithm.h:20, from src/Algorithm/Algorithm.cpp:14: src/Network/TopologyFactory.h: At global scope: src/Network/TopologyFactory.h:76:5: error: ‘Topology’ does not name a type Topology* create(const TString &description); ^ src/Network/TopologyFactory.h:84:48: error: ‘Topology’ has not been declared void build(const NodePairDeque &nodepairs, Topology* topology); ^ src/Network/TopologyFactory.h:92:5: error: ‘Topology’ does not name a type Topology* createTopologyAdjacency(const TString &description); ^ src/Network/TopologyFactory.h:103:5: error: ‘Topology’ does not name a type Topology* createTopologyBarabasi(const TString &description); ^ src/Network/TopologyFactory.h:112:5: error: ‘Topology’ does not name a type Topology* createTopologyErdos(const TString &description); ^ src/Network/TopologyFactory.h:120:5: error: ‘Topology’ does not name a type Topology* createTopologyFile(const TString &description); ^ src/Network/TopologyFactory.h:129:5: error: ‘Topology’ does not name a type Topology* createTopologyFull(const TString &description); ^ src/Network/TopologyFactory.h:138:5: error: ‘Topology’ does not name a type Topology* createTopologyGrid2D(const TString &description); ^ src/Network/TopologyFactory.h:147:5: error: ‘Topology’ does not name a type Topology* createTopologyRandom(const TString &description); ^ make: *** [Algorithm/Algorithm] Error 1

Topology.h

但包含的class Topology : public AbstractNetworkElement { // Friend(s)确实包含

In file included from src/Algorithm/SamcraBAlgorithm.h:22:0,
                 from src/Algorithm/SamcraBAlgorithm.cpp:17:
src/Utils/TString.h:25:7: error: using typedef-name ‘Types::TString’ after ‘class’
 class TString
       ^
In file included from src/LinkStateUpdate/LinkStateUpdateVisitor.h:23:0,
                 from src/Network/Link.h:19,
                 from src/Network/Topology.h:23,
                 from src/Network/Flow.h:20,
                 from src/Algorithm/Algorithm.h:22,
                 from src/Algorithm/SamcraBAlgorithm.cpp:16:
src/Utils/Types.h:65:24: note: ‘Types::TString’ has a previous declaration here
  typedef deque<string> TString;
                        ^
make: *** [Algorithm/SamcraBAlgorithm] Error 1

如何解决？

编辑：为类拓扑添加前向声明会产生进一步的错误：

<data>
    <points>
        <score>80</score>
        <score>90</score>
        <score>10</score>
        <score>13</score> 
    </points>
    <favor>50</favor>
    <ranked>
        <rank>50</rank>
        <rank>10</rank>
    </ranked>
</data>

Answer 1

基本上该项目有四个主要的编译问题：

循环包括TopologyFactory和拓扑类之间的依赖关系。
直接包含TString.h标头，用作typedef。
缺少cstdlib / cstdio包括。
类定义中的成员初始化（直到C ++ 11才可用）。

第一个修复涉及从拓扑标题中删除TopologyFactory，从而打破循环包含依赖关系。然后包含需要的TopologyFactory标题。

第二个很容易修复：只需删除TString头包含，因此它默认使用Utils / Types.h中的定义。

第三个修复是微不足道的：只需在需要的地方添加cstdio / cstdlib。

最后一个修复涉及将静态初始化移动到定义文件（也许作者使用的旧编译器具有允许此类初始化的扩展名。）

我对此gist做了补丁，因此您可以看到更改。该项目在Ubuntu 15.10上使用g ++ 5.2.1进行编译。

Answer 2

代码中有交叉引用。

Topology.h包含TopologyFactory.h，反之亦然TopologyFactory.h包含Topology.h

最简单的修复方法是将类Topology的前向声明添加到TopologyFactory.h中：

#ifndef TOPOLOGYFACTORY_H
#define TOPOLOGYFACTORY_H

...

class Topology;

class TopologyFactory
{

更正确的方法是尝试解决这些依赖关系，即不要在Topology.h中包含TopologyNetwork.h，然后在使用TopologyNetwork和Topology的所有cpp文件中添加两个include指令：

/*                                                                                                                                                                                             
        source file DesineModel.cpp for class: DesineModel                                                                                                                               

     ... 
*/

...  

#include "Network/Topology.h"
#include "Network/TopologyFactory.h"

...

编译DeSiNe时出错

2 个答案: