Problem with QScintilla

Hi programmers! I'm a new member in this (fantastic) community. I started to learn Qt some weeks ago, and now I have a problem. I want to develop a little IDE for C/C++, and my friends recommend me that I'd use QScintilla for the central editor widget. Well, I download and install it, compile the example and all works fine, but when I make a new application in other directory, I found this problem:
this is an trivial example:

Code:

---

#include <QtGui>
#include <QApplication>
#include <Qsci/qsciscintilla.h>
 
int main (int a,char* b[])
{
  QApplication app(a,b);
  QsciScintilla *textEdit = new QsciScintilla;
  textEdit->show();
  return app.exec();
}

---

the problem is when I run make, this is the error message:

main.o: In function `main':
main.cpp: (.text+0x44): undefined reference to `QsciScintilla::QsciScintilla(QWidget*)'
collect2: ld returned 1 exit status

the make rules for compiling are the following:

g++ -c -pipe -O2 -Wall -W -D_REENTRANT -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++ -I. -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4 -I. -I. -o main.o main.cpp
g++ -Wl,-O1 -o application main.o -L/usr/lib -lQtGui -lQtCore -lpthread

I think this error occurs due to the linker cannot find the dynamic library of QScintilla. The headers files are good placing.

Thanks and sorry for my horrible English XD

---

Added after 13 minutes:

Ok I found the solution: add LIBS += -lqscintilla to the .pro file
Sorry, beginner fail. The thread can be closed.

Hi friends, I'm beginning whit qsciscintilla in debian and i have a problem whit the following fragment of code:

#include <QtCore>
#include <QApplication>
#include <Qsci/qsciscintilla.h>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QsciScintilla *textEdit = new QsciScintilla();
textEdit->show();
return a.exec();
}

It compiled but in run-time close the app and don't give me any msg. I add LIBS += -lqscintilla2 to my .pro but nothing, Could someone help me please?

lqscintilla2

^^ why is there a '2' on the end?