cmake/Tests/RunCMake/EnableLanguageSubdir/CMP0220-NEW.cmake at 86759dce817cf1b7788f64925b7d5dc5599998da - cmake - SHS Gitea

mirrors/cmake

mirror of https://gitlab.kitware.com/cmake/cmake.git synced 2026-09-25 04:09:36 +03:00

Files

T

Arha Gatram 86759dce81 enable_language: add support for usage in subdirectories

Propagates variables set in enable_language() logic up variable scopes
so that the language can be used by targets in the ancestor directories.
Works through block() and function() scopes as well. The
add_subdirectory() call can be thought of as the effective call site for
enabling the language. The same holds for endblock() and the actual
function call.

Adds a policy CMP0220 to control this behavior. As the language is
"enabled" at each ancestor scope, the policy is checked. If OLD, the
language is not enabled at this scope and the ones above.

Closes: #27881 #27508 #27389
Related: #26751 #27564

2026-08-07 11:05:57 -04:00

11 lines

312 B

CMake

Raw Blame History

 # With CMP0220 NEW, a language enabled in a subdirectory is propagated up to this scope
 cmake_policy(SET CMP0220 NEW)
 add_subdirectory(cxx)
 if(NOT CMAKE_CXX_COMPILER_LOADED)
   message(FATAL_ERROR
       "enable_language(): language configuration was not propagated up a subdirectory with CMP0220 NEW")
 endif()