1CMP0020 2------- 3 4Automatically link Qt executables to ``qtmain`` target on Windows. 5 6CMake 2.8.10 and lower required users of Qt to always specify a link 7dependency to the ``qtmain.lib`` static library manually on Windows. 8CMake 2.8.11 gained the ability to evaluate generator expressions 9while determining the link dependencies from ``IMPORTED`` targets. This 10allows CMake itself to automatically link executables which link to Qt 11to the ``qtmain.lib`` library when using ``IMPORTED`` Qt targets. For 12applications already linking to ``qtmain.lib``, this should have little 13impact. For applications which supply their own alternative WinMain 14implementation and for applications which use the QAxServer library, 15this automatic linking will need to be disabled as per the 16documentation. 17 18The ``OLD`` behavior for this policy is not to link executables to 19``qtmain.lib`` automatically when they link to the QtCore ``IMPORTED`` target. 20The ``NEW`` behavior for this policy is to link executables to ``qtmain.lib`` 21automatically when they link to QtCore ``IMPORTED`` target. 22 23This policy was introduced in CMake version 2.8.11. CMake version 24|release| warns when the policy is not set and uses ``OLD`` behavior. Use 25the :command:`cmake_policy` command to set it to ``OLD`` or ``NEW`` explicitly. 26 27.. include:: DEPRECATED.txt 28