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  1. Qt
  2. QTBUG-51745

'multiple definition' errors while building QtSerialBus examples on Windows

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      Hi, everyone,

      After applying https://codereview.qt-project.org/#/c/149611/ to branch 5.7 and running static build with MinGW-W64 got errors:

      C:\libQT-5.7-dev\src\qtserialbus\lib\libQt5SerialBus.a(qmodbusdevice.o):qmodbusdevice.cpp:(.text+0x2b0): multiple definition of `QT_MODBUS()'
.obj/release/mainwindow.o:mainwindow.cpp:(.text+0x870): first defined here
C:\libQT-5.7-dev\src\qtserialbus\lib\libQt5SerialBus.a(qmodbusdevice.o):qmodbusdevice.cpp:(.text+0x320): multiple definition of `QT_MODBUS_LOW()'
.obj/release/mainwindow.o:mainwindow.cpp:(.text+0x8e0): first defined here
collect2.exe: error: ld returned 1 exit status

      (log added in attachment).

      Regards,

      Alexander

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          Bug - A problem which impairs or prevents the functions of the product. QTBUG-52067 Qt open source static library does not build

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              heimrich Karsten Heimrich
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