| CMP0020 |
| ------- |
| |
| Automatically link Qt executables to ``qtmain`` target on Windows. |
| |
| CMake 2.8.10 and lower required users of Qt to always specify a link |
| dependency to the ``qtmain.lib`` static library manually on Windows. |
| CMake 2.8.11 gained the ability to evaluate generator expressions |
| while determining the link dependencies from ``IMPORTED`` targets. This |
| allows CMake itself to automatically link executables which link to Qt |
| to the ``qtmain.lib`` library when using ``IMPORTED`` Qt targets. For |
| applications already linking to ``qtmain.lib``, this should have little |
| impact. For applications which supply their own alternative WinMain |
| implementation and for applications which use the QAxServer library, |
| this automatic linking will need to be disabled as per the |
| documentation. |
| |
| The ``OLD`` behavior for this policy is not to link executables to |
| ``qtmain.lib`` automatically when they link to the QtCore ``IMPORTED`` target. |
| The ``NEW`` behavior for this policy is to link executables to ``qtmain.lib`` |
| automatically when they link to QtCore ``IMPORTED`` target. |
| |
| This policy was introduced in CMake version 2.8.11. CMake version |
| |release| warns when the policy is not set and uses ``OLD`` behavior. Use |
| the :command:`cmake_policy` command to set it to ``OLD`` or ``NEW`` explicitly. |
| |
| .. include:: DEPRECATED.txt |
