Modify CXX_FLAGS

3rdparty/cmake/mingw32-toolchain.cmake

@@ -19,7 +19,7 @@ set(QT_MOC_EXECUTABLE ${QT_X11_DIR}/moc-qt4)
 set(QT_QMAKE_EXECUTABLE ${QT_X11_DIR}/qmake-qt4)
 set(QT_UIC_EXECUTABLE ${QT_X11_DIR}/uic-qt4)
 
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -static-libgcc")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static-libgcc -static-libstdc++")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -static-libgcc -Wall -O2 -mwindows")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static-libgcc -static-libstdc++ -Wall -O2 -mwindows")
 set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "${CMAKE_SHARED_LIBRARY_LINK_C_FLAGS} -static-libgcc -s")
 set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "${CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS} -static-libgcc -static-libstdc++ -s")