[Qt-interest] How to clean the intermediate files after build qt for windows

[Glenn WONG]

Hi, all,
  My qt is "qt-win-opensource-src-4.4.3", after compile it, I want to clean the intermediate files for saving space. but when I run the following  command, some Errors encountered.

   mingw32-make clean


the error as follows:

mingw32-make[4]: Entering directory `F:/GraphicSDK/Qt/tools/assistant/tools/assistant'
mingw32-make[4]: *** No rule to make target `f:/GraphicSDK/Qt/qt-win-opensource-src-4.4.3/lib/qtmaind.prl', needed by `Makefile'.
 Stop.
mingw32-make[4]: Leaving directory `F:/GraphicSDK/Qt/tools/assistant/tools/assistant'
mingw32-make[3]: *** [sub-assistant-clean-ordered] Error 2
mingw32-make[3]: Leaving directory `F:/GraphicSDK/Qt/tools/assistant/tools'
mingw32-make[2]: *** [sub-tools-clean-ordered] Error 2
mingw32-make[2]: Leaving directory `F:/GraphicSDK/Qt/tools/assistant'
mingw32-make[1]: *** [sub-assistant-clean-ordered] Error 2
mingw32-make[1]: Leaving directory `F:/GraphicSDK/Qt/tools'
mingw32-make: *** [sub-tools-clean-ordered] Error 2


Can you help me? Think you for your time.
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