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When CMake 2.4 generates the build tree for CMake itself it asks the built CMake to install itself using the rules that 2.4 generated. Since the install rules use undocumented commands that are not compatible from 2.4 to 2.6 we need a special case to avoid failure. This sets a special indicator variable in the install rules that enables a compatibility hack to support the old install rule format.
This is the Qt interface to CMake. It has a BSD license compatible with the Qt license exception. Only developers with a paid QT license are permitted to make changes to this code. Small patches and bug fixes can