(C++) How to cross-compile a Qt Creator project from Ubuntu to a windows executable: example 6: any application, using tweaked Makefile

This is example 6, and a solution of unknown viability in answering the Qt FAQ How to cross-compile a Qt Creator project from Ubuntu to a windows executable?.

Operating system: Ubuntu 10.04 LTS Lucid Lynx

IDE: Qt Creator 2.0.0

Project type: GUI application

Compiler: G++ 4.4.1

Libraries used:

Boost: version 1.40
Qt: version 4.7.0 (32 bit)
STL: from GCC, shipped with Qt Creator 2.0.0

Project options:

Added the additional qmake argument '-spec win32-g++'

Qt project file


#-------------------------------------------------

#

# Project created by QtCreator 2010-09-28T16:06:49

#

#-------------------------------------------------

QT       += core gui

TARGET = CppQtCrosscompileToWindowsExample6

TEMPLATE = app

LIBS += -L/usr/lib -lboost_system -lboost_filesystem

SOURCES += main.cpp\

        dialog.cpp

HEADERS  += dialog.h

FORMS    += dialog.ui

dialog.cpp


#include <iostream>

#include <string>

#include <vector>

//---------------------------------------------------------------------------

#include <boost/filesystem.hpp>

#include <boost/foreach.hpp>

//---------------------------------------------------------------------------

#include "dialog.h"

#include "ui_dialog.h"

//---------------------------------------------------------------------------

//From http://www.richelbilderbeek.nl/CppGetFilesInFolder.htm

const std::vector<std::string> GetFilesInFolder(const std::string& folder)

{

  std::vector<std::string> v;



  const boost::filesystem::path my_folder

    = boost::filesystem::system_complete(

        boost::filesystem::path(folder));



  if (!boost::filesystem::is_directory(my_folder)) return v;



  const boost::filesystem::directory_iterator j;

  for ( boost::filesystem::directory_iterator i(my_folder);

        i != j;

        ++i)

  {

    if ( boost::filesystem::is_regular_file( i->status() ) )

    {

      const std::string filename = i->path().filename();

      //const std::string full_filename = folder + "/" + filename;

      v.push_back(filename);

    }

  }

  return v;

}

//---------------------------------------------------------------------------

//From http://www.richelbilderbeek.nl/CppGetPath.htm

const std::string GetPath(const std::string& filename)

{

  return boost::filesystem::path(filename).parent_path().string();

}

//---------------------------------------------------------------------------

Dialog::Dialog(QWidget *parent) :

    QDialog(parent),

    ui(new Ui::Dialog)

{

  ui->setupUi(this);

  const std::string my_name = QApplication::arguments()[0].toStdString();

  this->setWindowTitle(my_name.c_str());

  const std::vector<std::string> v = GetFilesInFolder(GetPath(my_name));

  std::copy(v.begin(),v.end(),std::ostream_iterator<std::string>(std::cout,"\n"));

  std::cout << "Number of files: " << v.size() << '\n';

  BOOST_FOREACH(const std::string& s,v)

  {

    ui->text->appendHtml(s.c_str());

  }

}

//---------------------------------------------------------------------------

Dialog::~Dialog()

{

  delete ui;

}

//---------------------------------------------------------------------------

void Dialog::changeEvent(QEvent *e)

{

  QDialog::changeEvent(e);

  switch (e->type()) {

  case QEvent::LanguageChange:

    ui->retranslateUi(this);

    break;

  default:

    break;

  }

}

//---------------------------------------------------------------------------

dialog.h


#ifndef DIALOG_H

#define DIALOG_H

//---------------------------------------------------------------------------

#include <QDialog>

//---------------------------------------------------------------------------

namespace Ui {

  class Dialog;

}

//---------------------------------------------------------------------------

class Dialog : public QDialog

{

  Q_OBJECT



public:

  explicit Dialog(QWidget *parent = 0);

  ~Dialog();



protected:

  void changeEvent(QEvent *e);



private:

  Ui::Dialog *ui;

};

//---------------------------------------------------------------------------

#endif // DIALOG_H

main.cpp


#include <QtGui/QApplication>

#include "dialog.h"



int main(int argc, char *argv[])

{

    QApplication a(argc, argv);

    Dialog w;

    w.show();



    return a.exec();

}

Process

Just running this project is known to cause the misc error [ui_dialog.h] Error 127.

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