title: libgcc_s_dw2-1.dll is missing making OpenCV and Qt 5 program is unable to start
body: <p>My project needs opencv library 2.3 and I'm using Qt 5.0.1. However, after building, the program won't start. I tried the Dependency Walker and added all Qt's dlls from C:\Qt\Qt5.0.1\5.0.1\mingw47_32\bin <strong>except libgcc_s_dw2-2.dll</strong>, which I couldn't find in my computer.  The Dependency Walker says that libgcc_s_dw2-1.dll is needed by some opencv dlls such as libopencv_core230.dll. I tried the dll provided <a href="https://stackoverflow.com/a/9334351/957121">here</a>, but got an error about the program couldn't locate the input entrance __gxx_personality_v0 on libopencv_imgproc230.dll. Any advices? :)</p>
  
  <p>I've added the statement </p>
  
  <pre><code>QMAKE_LFLAGS += -static -static-libgcc -static-libstdc++ -lpthread
  </code></pre>
  
  <p>into .pro file, not work :(</p>