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Diffstat (limited to 'Help/policy')
| -rw-r--r-- | Help/policy/CMP0055.rst | 17 | ||||
| -rw-r--r-- | Help/policy/CMP0056.rst | 32 |
2 files changed, 49 insertions, 0 deletions
diff --git a/Help/policy/CMP0055.rst b/Help/policy/CMP0055.rst new file mode 100644 index 0000000..fe7ab6f --- /dev/null +++ b/Help/policy/CMP0055.rst @@ -0,0 +1,17 @@ +CMP0055 +------- + +Strict checking for the :command:`break` command. + +CMake 3.1 and lower allowed calls to the :command:`break` command +outside of a loop context and also ignored any given arguments. +This was undefined behavior. + +The OLD behavior for this policy is to allow :command:`break` to be placed +outside of loop contexts and ignores any arguments. The NEW behavior for this +policy is to issue an error if a misplaced break or any arguments are found. + +This policy was introduced in CMake version 3.2. +CMake version |release| warns when the policy is not set and uses +OLD behavior. Use the cmake_policy command to set it to OLD or +NEW explicitly. diff --git a/Help/policy/CMP0056.rst b/Help/policy/CMP0056.rst new file mode 100644 index 0000000..3c75ff4 --- /dev/null +++ b/Help/policy/CMP0056.rst @@ -0,0 +1,32 @@ +CMP0056 +------- + +Honor link flags in :command:`try_compile` source-file signature. + +The :command:`try_compile` command source-file signature generates a +``CMakeLists.txt`` file to build the source file into an executable. +In order to compile the source the same way as it might be compiled +by the calling project, the generated project sets the value of the +:variable:`CMAKE_<LANG>_FLAGS` variable to that in the calling project. +The value of the :variable:`CMAKE_EXE_LINKER_FLAGS` variable may be +needed in some cases too, but CMake 3.1 and lower did not set it in +the generated project. CMake 3.2 and above prefer to set it so that +linker flags are honored as well as compiler flags. This policy +provides compatibility with the pre-3.2 behavior. + +The OLD behavior for this policy is to not set the value of the +:variable:`CMAKE_EXE_LINKER_FLAGS` variable in the generated test +project. The NEW behavior for this policy is to set the value of +the :variable:`CMAKE_EXE_LINKER_FLAGS` variable in the test project +to the same as it is in the calling project. + +If the project code does not set the policy explicitly, users may +set it on the command line by defining the +:variable:`CMAKE_POLICY_DEFAULT_CMP0056 <CMAKE_POLICY_DEFAULT_CMP<NNNN>>` +variable in the cache. + +This policy was introduced in CMake version 3.2. Unlike most policies, +CMake version |release| does *not* warn by default when this policy +is not set and simply uses OLD behavior. See documentation of the +:variable:`CMAKE_POLICY_WARNING_CMP0056 <CMAKE_POLICY_WARNING_CMP<NNNN>>` +variable to control the warning. |