diff options
Diffstat (limited to 'Help')
| -rw-r--r-- | Help/manual/cmake-policies.7.rst | 1 | ||||
| -rw-r--r-- | Help/policy/CMP0085.rst | 21 | ||||
| -rw-r--r-- | Help/release/dev/genex-in_list-empty-args.rst | 5 |
3 files changed, 27 insertions, 0 deletions
diff --git a/Help/manual/cmake-policies.7.rst b/Help/manual/cmake-policies.7.rst index 7c0fe6d..044a06e 100644 --- a/Help/manual/cmake-policies.7.rst +++ b/Help/manual/cmake-policies.7.rst @@ -57,6 +57,7 @@ Policies Introduced by CMake 3.14 .. toctree:: :maxdepth: 1 + CMP0085: IN_LIST generator expression handles empty list items. </policy/CMP0085> CMP0084: The FindQt module does not exist for find_package(). </policy/CMP0084> CMP0083: Add PIE options when linking executable. </policy/CMP0083> CMP0082: Install rules from add_subdirectory() are interleaved with those in caller. </policy/CMP0082> diff --git a/Help/policy/CMP0085.rst b/Help/policy/CMP0085.rst new file mode 100644 index 0000000..d9ec9a2 --- /dev/null +++ b/Help/policy/CMP0085.rst @@ -0,0 +1,21 @@ +CMP0085 +------- + +``$<IN_LIST:...>`` handles empty list items. + +In CMake 3.13 and lower, the ``$<IN_LIST:...>`` generator expression always +returned ``0`` if the first argument was empty, even if the list contained an +empty item. This behavior is inconsistent with the ``IN_LIST`` behavior of +:command:`if`, which this generator expression is meant to emulate. CMake 3.14 +and later handles this case correctly. + +The ``OLD`` behavior of this policy is for ``$<IN_LIST:...>`` to always return +``0`` if the first argument is empty. The ``NEW`` behavior is to return ``1`` +if the first argument is empty and the list contains an empty item. + +This policy was introduced in CMake version 3.14. 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 diff --git a/Help/release/dev/genex-in_list-empty-args.rst b/Help/release/dev/genex-in_list-empty-args.rst new file mode 100644 index 0000000..ec1c6c0 --- /dev/null +++ b/Help/release/dev/genex-in_list-empty-args.rst @@ -0,0 +1,5 @@ +genex-in_list-empty-args +------------------------ + +* The $<IN_LIST:...> generator expression now correctly handles an empty + argument. See :policy:`CMP0085` for details. |