Merge topic 'note-link-libraries-genex'
8bd81981
Help: Add note about restoring pre-3.0 link libraries genex behavior
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note-link-libraries-genex
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-------------------------
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* In CMake 3.0 the :command:`target_link_libraries` command
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accidentally began allowing unquoted arguments to use
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:manual:`generator expressions <cmake-generator-expressions(7)>`
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containing a (``;`` separated) list within them. For example::
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set(libs B C)
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target_link_libraries(A PUBLIC $<BUILD_INTERFACE:${libs}>)
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This is equivalent to writing::
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target_link_libraries(A PUBLIC $<BUILD_INTERFACE:B C>)
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and was never intended to work. It did not work in CMake 2.8.12.
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Such generator expressions should be in quoted arguments::
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set(libs B C)
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target_link_libraries(A PUBLIC "$<BUILD_INTERFACE:${libs}>")
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CMake 3.1 again requires the quotes for this to work correctly.
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