Qt executable error- dll library - c++

Question

A Qt application which runs perfectly when executed from QtCreator, doesn't wont to run when I try to execute it from debug folder (without QtCreator). It asked for lots of .dll files and I downloaded them one by one,and added to debug folder.
Now I got the error:
The program can't start because libwinpthread-1.dll is missing from your computer.
Try reinstalling the program to fix this problem.
I can't find libwinpthread-1.dll anywhere on the internet. What did I do wrong?
The path to the executable is:
C:\Qt\Tools\QtCreator\bin\build-SimpleText1_3-Desktop_Qt_5_2_1_MinGW_32bit\Debug
The project file:
#-------------------------------------------------
#
# Project created by QtCreator 2014-04-04T14:29:48
#
#-------------------------------------------------
QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET = SimpleText1_3
TEMPLATE = app
SOURCES += main.cpp\
mainwindow.cpp
HEADERS += mainwindow.h
FORMS += mainwindow.ui
CONFIG += console c++11
QMAKE_CXXFLAGS += -std=c++11
And main.cpp:
#include "mainwindow.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}

Answer 1

When you run your application in Qt Creator every thing is good but when you run your .exe file fro debug folder you get dll missing error. It`s True!
First set Qt Creator to Release mode. You must copy these dll & the folder to Release folder:
platforms --> Folder
icudt52.dll
icuin52.dll
icuuc52.dll
msvcp110.dll
msvcr110.dll
Qt5Core.dll
Qt5Gui.dll
Qt5Widgets.dll
Above dll are for Visual Studio compiler & only Core & GUI library.
Good Luck.
Ya Ali.

Answer 2

Go to the following Qt documentation link:
https://wiki.qt.io/Deploy_an_Application_on_Windows.
Follow the instructions precisely. I did not have to do the brut force approach. I did get a missing environment variable warning, but the bunding did work.
Be careful about release vs debug builds.