qt linux“QMAKE_CXXFLAGS + = -std = c ++ 11”相当于windows？ [英] qt linux "QMAKE_CXXFLAGS += -std=c++11" equivalent for windows?

问题描述

我是一个新手，所以请原谅我，如果这真的很蠢。

最近我做了一个项目使用qt ubuntu和我使用QMAKE_CXXFLAGS + = -std = c ++ 11对于静态链接，一切都很好，所以我想为什么不重新编译它在Windows上，我做了。

这是node.h

  #ifndef NODE_H 
 #define NODE_H 
 #include< iostream> 
 #include< string> 
 #includeqcustomplot.h
 using namespace std; 
 class node 
 {
 public：
 double p [6]; 
 string table [3000] [9]; 
 
 double splitPoints [8]; 
 double giniA [8]; //通过对相应属性进行分区获得的ginies数组
 double gini; //数据集的gini 
 int rowc = 0; //行计数
 int colc = 0; 
 int cc; 
 std :: string label; 
 string a [9]; 
 node * left = NULL; 
 node * right = NULL; 
 void plotGraph（QCustomPlot * customPlot）; 
 int optimize（int）; 
 
 
}; 
 
 #endif // NODE_H 
  

当我运行我的项目时以下错误消息：

 在.. \mining应用程序最终（希望）\ / mythread.h中包含的文件：4 ，
从.. \mining app final（希望）\ / mainwindow.h：8，
从.. \mining app final（希望）\main.cpp：2：
 ..\mining app final（希望）\ / node.h：16：错误：ISO C ++禁止初始化成员'rowc'
 ..\mining app final（希望）\ / node .h：16：error：making'rowc'static 
 ..\mining app final（希望）\ / node.h：16：error：ISO C ++禁止非const静态成员的类初始化'rowc'
 .. \mining app final（希望）\ / node.h：17：error：ISO C ++禁止成员'colc'的初始化
 ..\mining app final ）\ / node.h：17：error：making'colc'static 
 ..\mining app final（希望）\ / node.h：17：error：ISO C ++禁止类的初始化非const静态成员'colc'
 .. \mining app final（希望）\ / node.h：21：error：ISO C ++禁止初始化成员'left'
 .. \\挖掘应用程序最终（希望）\ / node.h：21：错误：使'left'静态
 .. \mining app final（希望）\ / node.h：21：error：类初始化非整数类型的node *的静态数据成员
 .. \mining app final（希望）\ / node.h：22：error：ISO C ++禁止初始化成员'right'
 .. \mining app final（hopefully）\ / node.h：22：error：making'right'static 
 ..\mining app final（hopefully）\ / node.h： 22：错误：无效的类内初始化非整型node *的静态数据成员
 mingw32-make [1]：离开目录`C：/ build-blah-vai-Debug'
 mingw32-make [1]：*** [debug / main.o]错误1 
 mingw32-make：*** [debug]错误2 
 01:36:17：进程C ：\MinGw\bin\mingw32-make.exe退出代码2. 
在构建/部署项目时出错blah（kit：vai）
执行步骤'Make'
 01:36:17：经过时间：00:02。 
  

任何人都可以指导我如何解决这个问题？

我目前正在使用Qt 4.8.5-mingw（Windows 7）

解决方案

使用任何c ++ 11特性我写了我自己的to_string（）和to_Double（）函数并使用它们，现在它的工作原理像一个魅力！

string toString（double）

 
 code> string toString（double num）
 {
 std :: stringstream ss; 
 
 ss<< num; 
 std :: string s（ss.str（））; 
 
 return s; 
} 
  

double toDouble（string）

  double toDouble（string s）
 {
 int i，j; 
 double p = 0; 
 
 for（i = s.size（） -  1;（s [i]！='。'）&&（i> = 0）; i--）
 {
 p + = 1.0; 
} 
 
 if（s [i]！='。'）
 p = 0; 
 
 else 
 {
 for（j = i; j  s [j] = s [j + 1] 
} 
 istringstream myStream（s）; 
 unsigned int uintVar = 0; 
 
 myStream>> uintVar; 
 
 return（uintVar /（double）（pow（10.0，p）））; 
} 
  

I am a newbie so please forgive me if this is really stupid.

Recently I made a project using qt in ubuntu and I used "QMAKE_CXXFLAGS += -std=c++11" for static linking,everything went well so I thought why not recompile it on windows,and I did.

This is node.h

#ifndef NODE_H
#define NODE_H
#include <iostream>
#include <string>
#include "qcustomplot.h"
using namespace std;
class node
{
public:
double p[6];
string table[3000][9];

double splitPoints[8];
double giniA[8];//array of ginies obtained by partitioning on corresponding attributes
double gini;//gini of a dataset
int rowc=0;//row count
int colc=0;
int cc;
std::string label;
string a[9];
node* left=NULL;
node* right=NULL;
void plotGraph(QCustomPlot *customPlot);
int optimize(int);


};

#endif // NODE_H

when I run my project I get the following error messages:

   In file included from ..\mining app final(hopefully)\/mythread.h:4,
             from ..\mining app final(hopefully)\/mainwindow.h:8,
             from ..\mining app final(hopefully)\main.cpp:2:
   ..\mining app final(hopefully)\/node.h:16: error: ISO C++ forbids initialization of  member 'rowc'
   ..\mining app final(hopefully)\/node.h:16: error: making 'rowc' static
   ..\mining app final(hopefully)\/node.h:16: error: ISO C++ forbids in-class   initialization of non-const static member 'rowc'
   ..\mining app final(hopefully)\/node.h:17: error: ISO C++ forbids initialization of member 'colc'
   ..\mining app final(hopefully)\/node.h:17: error: making 'colc' static
   ..\mining app final(hopefully)\/node.h:17: error: ISO C++ forbids in-class initialization of non-const static member 'colc'
   ..\mining app final(hopefully)\/node.h:21: error: ISO C++ forbids initialization of member 'left'
   ..\mining app final(hopefully)\/node.h:21: error: making 'left' static
   ..\mining app final(hopefully)\/node.h:21: error: invalid in-class initialization of static data member of non-integral type 'node*'
   ..\mining app final(hopefully)\/node.h:22: error: ISO C++ forbids initialization of   member 'right'
   ..\mining app final(hopefully)\/node.h:22: error: making 'right' static
   ..\mining app final(hopefully)\/node.h:22: error: invalid in-class initialization of         static data member of non-integral type 'node*'
   mingw32-make[1]: Leaving directory `C:/build-blah-vai-Debug'
   mingw32-make[1]: *** [debug/main.o] Error 1
   mingw32-make: *** [debug] Error 2
   01:36:17: The process "C:\MinGw\bin\mingw32-make.exe" exited with code 2.
   Error while building/deploying project blah (kit: vai)
   When executing step 'Make'
   01:36:17: Elapsed time: 00:02.

can anyone please guide me how to resolve this ?

I'm currently working on Qt 4.8.5-mingw (Windows 7)

解决方案

Well in order to avoid using any c++11 features I wrote my own "to_string()" and "to_Double()" functions and used them, Now It works like a charm !

Here are the functions:

string toString(double)

string toString(double num)
{
std::stringstream ss;

ss << num;
std::string s(ss.str());

return s;
}

double toDouble(string)

 double toDouble(string s)
 {
  int i,j;
  double p=0;

  for(i=s.size()-1;(s[i]!='.')&&(i>=0);i--)
  {
    p+=1.0;
  }

  if(s[i]!='.')
  p=0;

  else
  {
  for(j=i;j<s.size();j++)
  s[j]=s[j+1];
  }
  istringstream myStream(s);
  unsigned int uintVar = 0;

  myStream >> uintVar;

  return (uintVar/(double)(pow(10.0,p)));
 }

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