title: collect2.exe: error: ld returned 5 exit status
body: <p>I've recently updated all msys2 packages and now I can't build my project.
  The error occurs at the moment of linking one of .dlls - <code>target_library.dll</code>.</p>
  
  <p>The error message isn't clear to me. What does status 5 mean?</p>
  
  <blockquote>
    <p>collect2.exe: error: ld returned 5 exit status</p>
  </blockquote>
  
  <p>Full message:</p>
  
  <blockquote>
  <pre><code>g++ -Wl,-s,--relax,--gc-sections -shared -Wl,-subsystem,windows -mthreads -Wl,--out-implib,C:/msys64/workspace/Project_Root_Directory/project/src/../build/release/plugins/libtarget_library.dll.a -o ../../../../build/release/plugins/target_library.dll object_script.target_library.Release  -lglu32 -lopengl32 -luser32 -LC:/msys64/workspace/Project_Root_Directory/project/build/release -LC:/msys64/workspace/Project_Root_Directory/project/third-party/out/lib -LC:/msys64/workspace/Project_Root_Directory/project/deps/lib -lexif -ldecimal -lsqlite3 -lutils -LC:/Python35/libs -lpython35 -lkmlbase -lkmlengine -lkmldom -lkmlxsd -lminizip -luriparser -lkmlconvenience -lcore -lrender -lraster -lgui -LC:/msys64/workspace/Project_Root_Directory/project/deps/lib/target_library/win64 -LC:/msys64/mingw64/lib  C:/msys64/mingw64/lib/libQt5Widgets.dll.a C:/msys64/mingw64/lib/libQt5WinExtras.dll.a C:/msys64/mingw64/lib/libQt5Gui.dll.a C:/msys64/mingw64/lib/libQt5Network.dll.a C:/msys64/mingw64/lib/libQt5Concurrent.dll.a C:/msys64/mingw64/lib/libQt5Xml.dll.a C:/msys64/mingw64/lib/libQt5Core.dll.a
  
  collect2.exe: error: ld returned 5 exit status
  make[4]: *** [Makefile.Release:159: ../../../../build/release/plugins/target_library.dll] Error 1
  make[4]: Leaving directory '/workspace/Project_Root_Directory/project/src/modules/plugins/target_library'
  make[3]: Leaving directory '/workspace/Project_Root_Directory/project/src/modules/plugins/target_library'
  make[2]: *** [Makefile:384: sub-target_library-make_first] Error 2
  make[2]: Leaving directory '/workspace/Project_Root_Directory/project/src/modules/plugins'
  make[1]: *** [Makefile:297: sub-plugins-make_first] Error 2
  make[1]: Leaving directory '/workspace/Project_Root_Directory/project/src/modules'
  make: *** [Makefile:44: sub-modules-make_first] Error 2
  </code></pre>
  </blockquote>
  
  <p>gcc 7.1.0, Qt5 5.9.1, qmake, Win7 x64</p>