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.
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
This policy was introduced in CMake version 2.8.11. CMake version 3.15.2 warns when the policy is not set and uses
OLD behavior. Use the
cmake_policy() command to set it to
OLD behavior of a policy is
deprecated by definition and may be removed in a future version of CMake.
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