Hi, I am trying to compile the KDChart in Linux (Debian Lenny), but I am getting the following error

Qt Code: 
  1. g++  -o WidgetSimple .obj/main.o    -L/usr/lib -L../../../lib -lkdchart -ltesttools -lQtSvg -lQtGui -lQtCore -lpthread
  2. .obj/main.o: In function `main':
  3. main.cpp:(.text+0x47): undefined reference to `KDChart::Widget::Widget(QWidget*)'
  4. main.cpp:(.text+0x5d): undefined reference to `KDChart::Widget::Widget(QWidget*)'
  5. main.cpp:(.text+0x48c): undefined reference to `KDChart::Widget::setDataset(int, QVector<double> const&, QString const&)'
  6. main.cpp:(.text+0x4d8): undefined reference to `KDChart::Widget::setDataset(int, QVector<double> const&, QString const&)'
  7. main.cpp:(.text+0x521): undefined reference to `KDChart::Widget::setDataset(int, QVector<double> const&, QString const&)'
  8. main.cpp:(.text+0x56a): undefined reference to `KDChart::Widget::setDataset(int, QVector<double> const&, QString const&)'
  9. main.cpp:(.text+0x5e9): undefined reference to `KDChart::Widget::~Widget()'
  10. main.cpp:(.text+0x5f7): undefined reference to `KDChart::Widget::~Widget()'
  11. main.cpp:(.text+0x6d0): undefined reference to `KDChart::Widget::~Widget()'
  12. main.cpp:(.text+0x6de): undefined reference to `KDChart::Widget::~Widget()'
  13. collect2: ld returned 1 exit status
  14. make[3]: ** [WidgetSimple] Erro 1
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My LD_LIBRARY_PATH is pointing to the root of the kdchart directory.
I was able to compile KDChart in Debian testing, but not in the Unstable version.

Someone has any idea about how to solve this issue?
Thanks