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authorBrad King <brad.king@kitware.com>2014-10-10 14:48:05 (GMT)
committerBrad King <brad.king@kitware.com>2014-10-10 14:48:05 (GMT)
commit8bd81981ad2759f2957b464890d3a78ff0675b02 (patch)
tree754adda3fd49ea167ce978d5557be16976fee67a /Help
parent5ab9aa62fe1e5e1e74bafc69bf0e8d16f118ac9d (diff)
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Help: Add note about restoring pre-3.0 link libraries genex behavior
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-rw-r--r--Help/release/dev/note-link-libraries-genex.rst22
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diff --git a/Help/release/dev/note-link-libraries-genex.rst b/Help/release/dev/note-link-libraries-genex.rst
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+note-link-libraries-genex
+-------------------------
+
+* In CMake 3.0 the :command:`target_link_libraries` command
+ accidentally began allowing unquoted arguments to use
+ :manual:`generator expressions <cmake-generator-expressions(7)>`
+ containing a (``;`` separated) list within them. For example::
+
+ set(libs B C)
+ target_link_libraries(A PUBLIC $<BUILD_INTERFACE:${libs}>)
+
+ This is equivalent to writing::
+
+ target_link_libraries(A PUBLIC $<BUILD_INTERFACE:B C>)
+
+ and was never intended to work. It did not work in CMake 2.8.12.
+ Such generator expressions should be in quoted arguments::
+
+ set(libs B C)
+ target_link_libraries(A PUBLIC "$<BUILD_INTERFACE:${libs}>")
+
+ CMake 3.1 again requires the quotes for this to work correctly.