I insert in cmd:
gcc -ldlfcn
it warned:
Qt Code: 
  1. F:/Qt-Android/Tools/mingw530_32/bin/../lib/gcc/i686-w64-mingw32/5.3.0/../../../.
  2. ./i686-w64-mingw32/bin/ld.exe: cannot find -ldlfcn
  3. collect2.exe: error: ld returned 1 exit status
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