diff options
Diffstat (limited to 'Help/policy/CMP0025.rst')
| -rw-r--r-- | Help/policy/CMP0025.rst | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/Help/policy/CMP0025.rst b/Help/policy/CMP0025.rst new file mode 100644 index 0000000..25957e9 --- /dev/null +++ b/Help/policy/CMP0025.rst @@ -0,0 +1,21 @@ +CMP0025 +------- + +Compiler id for Apple Clang is now AppleClang. + +CMake >= 2.8.13 recognize that Apple Clang is a different compiler +than upstream Clang and that they have different version numbers. +CMake now prefers to present this to projects by setting +CMAKE_<LANG>_COMPILER_ID to "AppleClang" instead of "Clang". However, +existing projects may assume the compiler id for Apple Clang is just +"Clang" as it was in CMake < 2.8.13. Therefore this policy determines +for Apple Clang which compiler id to report in +CMAKE_<LANG>_COMPILER_ID after <LANG> is enabled by the project() or +enable_language() command. + +The OLD behavior for this policy is to use compiler id "Clang". The +NEW behavior for this policy is to use compiler id "AppleClang". + +This policy was introduced in CMake version 2.8.13. 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. |