I've downloaded "MinGW-5.1.3.exe". In the install dialog, I selected to install the current version. I didn't modified my Environment Variables, because I installed it in the same path as the old version.

Running a "mingw32-make" for "cmd.exe" returned me the following error after a few seconds :

Qt Code: 
  1. g++ -c -O2 -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT
  2. -DQT_BOOTSTRAPPED -DQT_MOC -DQT_NO_CODECS -DQT_LITE_UNICODE -DQT_NO_LIBRARY -DQT
  3. _NO_STL -DQT_NO_COMPRESS -DQT_NO_DATASTREAM -DQT_NO_TEXTSTREAM -DQT_NO_TEXTCODEC
  4.  -DQT_NO_UNICODETABLES -DQT_NO_THREAD -DQT_NO_REGEXP -DQT_NO_QOBJECT -DQT_NO_SYS
  5. TEMLOCALE -DQT_NO_GEOM_VARIANT -DQT_NODLL -I"..\..\corelib\arch\generic" -I"..\.
  6. .\..\include" -I"." -I"..\..\..\include\QtCore" -I"." -I"." -I"..\..\..\mkspecs\
  7. win32-g++" -o release\qfsfileengine_iterator_win.o ..\..\corelib\io\qfsfileengin
  8. e_iterator_win.cpp
  9. g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-rel
  10. oc -Wl,-s -Wl,-subsystem,console -mthreads -Wl -o "..\..\..\bin\moc.exe" object_
  11. script.moc.Release
  12. ./release\qiodevice.o:qiodevice.cpp:(.rdata$_ZTI16QIODevicePrivate[typeinfo for
  13. QIODevicePrivate]+0x0): multiple definition of `typeinfo for QIODevicePrivate'
  14. ./release\qbuffer.o:qbuffer.cpp:(.data$_ZTI16QIODevicePrivate[typeinfo for QIODe
  15. vicePrivate]+0x0): first defined here
  16. ./release\qiodevice.o:qiodevice.cpp:(.rdata$_ZTS16QIODevicePrivate[typeinfo name
  17.  for QIODevicePrivate]+0x0): multiple definition of `typeinfo name for QIODevice
  18. Private'
  19. ./release\qbuffer.o:qbuffer.cpp:(.text$_ZTS16QIODevicePrivate[typeinfo name for
  20. QIODevicePrivate]+0x0): first defined here
  21. ./release\qiodevice.o:qiodevice.cpp:(.rdata$_ZTI9QIODevice[typeinfo for QIODevic
  22. e]+0x0): multiple definition of `typeinfo for QIODevice'
  23. ./release\qbuffer.o:qbuffer.cpp:(.data$_ZTI9QIODevice[typeinfo for QIODevice]+0x
  24. 0): first defined here
  25. ./release\qiodevice.o:qiodevice.cpp:(.rdata$_ZTS9QIODevice[typeinfo name for QIO
  26. Device]+0x0): multiple definition of `typeinfo name for QIODevice'
  27. ./release\qbuffer.o:qbuffer.cpp:(.text$_ZTS9QIODevice[typeinfo name for QIODevic
  28. e]+0x0): first defined here
  29. ./release\qtemporaryfile.o:qtemporaryfile.cpp:(.rdata$_ZTI12QFilePrivate[typeinf
  30. o for QFilePrivate]+0x0): multiple definition of `typeinfo for QFilePrivate'
  31. ./release\qfile.o:qfile.cpp:(.data$_ZTI12QFilePrivate[typeinfo for QFilePrivate]
  32. +0x0): first defined here
  33. ./release\qtemporaryfile.o:qtemporaryfile.cpp:(.rdata$_ZTS12QFilePrivate[typeinf
  34. o name for QFilePrivate]+0x0): multiple definition of `typeinfo name for QFilePr
  35. ivate'
  36. ./release\qfile.o:qfile.cpp:(.text$_ZTS12QFilePrivate[typeinfo name for QFilePri
  37. vate]+0x0): first defined here
  38. ./release\qtemporaryfile.o:qtemporaryfile.cpp:(.rdata$_ZTI5QFile[typeinfo for QF
  39. ile]+0x0): multiple definition of `typeinfo for QFile'
  40. ./release\qfile.o:qfile.cpp:(.data$_ZTI5QFile[typeinfo for QFile]+0x0): first de
  41. fined here
  42. ./release\qtemporaryfile.o:qtemporaryfile.cpp:(.rdata$_ZTS5QFile[typeinfo name f
  43. or QFile]+0x0): multiple definition of `typeinfo name for QFile'
  44. ./release\qfile.o:qfile.cpp:(.text$_ZTS5QFile[typeinfo name for QFile]+0x0): fir
  45. st defined here
  46. collect2: ld returned 1 exit status
  47. mingw32-make[2]: *** [..\..\..\bin\moc.exe] Error 1
  48. mingw32-make[2]: Leaving directory `D:/Applications/Qt/4.3.2/src/tools/moc'
  49. mingw32-make[1]: *** [release] Error 2
  50. mingw32-make[1]: Leaving directory `D:/Applications/Qt/4.3.2/src/tools/moc'
  51. mingw32-make: *** [sub-moc-make_default-ordered] Error 2
  52.  
  53. D:\Applications\Qt\4.3.2>
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