cmExperimental: remove the flag for C++ modules

All the major compilers now have scheduled releases with support for
scanning, so remove the experimental gate.

Fixes: #18355

12 files changed, 7 insertions, 56 deletions

diff --git a/Help/prop_tgt/CXX_MODULE_DIRS.rst b/Help/prop_tgt/CXX_MODULE_DIRS.rst
index a32b5b1..6c5dd3a 100644
--- a/Help/prop_tgt/CXX_MODULE_DIRS.rst
+++ b/Help/prop_tgt/CXX_MODULE_DIRS.rst
@@ -1,11 +1,7 @@
 CXX_MODULE_DIRS
 ---------------
 
-.. versionadded:: 3.25
-
-.. note ::
-
-  Experimental. Gated by ``CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API``
+.. versionadded:: 3.28
 
 Semicolon-separated list of base directories of the target's default
 C++ module set (i.e. the file set with name and type ``CXX_MODULES``). The
diff --git a/Help/prop_tgt/CXX_MODULE_DIRS_NAME.rst b/Help/prop_tgt/CXX_MODULE_DIRS_NAME.rst
index 9190991..8b6e4dd 100644
--- a/Help/prop_tgt/CXX_MODULE_DIRS_NAME.rst
+++ b/Help/prop_tgt/CXX_MODULE_DIRS_NAME.rst
@@ -1,11 +1,7 @@
 CXX_MODULE_DIRS_<NAME>
 ----------------------
 
-.. versionadded:: 3.25
-
-.. note ::
-
-  Experimental. Gated by ``CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API``
+.. versionadded:: 3.28
 
 Semicolon-separated list of base directories of the target's ``<NAME>`` C++
 module set, which has the set type ``CXX_MODULES``. The property supports
diff --git a/Help/prop_tgt/CXX_MODULE_SET.rst b/Help/prop_tgt/CXX_MODULE_SET.rst
index f5cd8b2..851de86 100644
--- a/Help/prop_tgt/CXX_MODULE_SET.rst
+++ b/Help/prop_tgt/CXX_MODULE_SET.rst
@@ -1,11 +1,7 @@
 CXX_MODULE_SET
 --------------
 
-.. versionadded:: 3.25
-
-.. note ::
-
-  Experimental. Gated by ``CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API``
+.. versionadded:: 3.28
 
 Semicolon-separated list of files in the target's default C++ module set,
 (i.e. the file set with name and type ``CXX_MODULES``). If any of the paths
diff --git a/Help/prop_tgt/CXX_MODULE_SETS.rst b/Help/prop_tgt/CXX_MODULE_SETS.rst
index 0e8945a..2165027 100644
--- a/Help/prop_tgt/CXX_MODULE_SETS.rst
+++ b/Help/prop_tgt/CXX_MODULE_SETS.rst
@@ -1,11 +1,7 @@
 CXX_MODULE_SETS
 ---------------
 
-.. versionadded:: 3.25
-
-.. note ::
-
-  Experimental. Gated by ``CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API``
+.. versionadded:: 3.28
 
 Read-only list of the target's ``PRIVATE`` and ``PUBLIC`` C++ module sets (i.e.
 all file sets with the type ``CXX_MODULES``). Files listed in these file sets
diff --git a/Help/prop_tgt/CXX_MODULE_SET_NAME.rst b/Help/prop_tgt/CXX_MODULE_SET_NAME.rst
index 5674c99..e73e28a 100644
--- a/Help/prop_tgt/CXX_MODULE_SET_NAME.rst
+++ b/Help/prop_tgt/CXX_MODULE_SET_NAME.rst
@@ -1,11 +1,7 @@
 CXX_MODULE_SET_<NAME>
 ---------------------
 
-.. versionadded:: 3.25
-
-.. note ::
-
-  Experimental. Gated by ``CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API``
+.. versionadded:: 3.28
 
 Semicolon-separated list of files in the target's ``<NAME>`` C++ module set,
 which has the set type ``CXX_MODULES``. If any of the paths are relative, they
diff --git a/Help/prop_tgt/CXX_SCAN_FOR_MODULES.rst b/Help/prop_tgt/CXX_SCAN_FOR_MODULES.rst
index 93a1b73..791914e 100644
--- a/Help/prop_tgt/CXX_SCAN_FOR_MODULES.rst
+++ b/Help/prop_tgt/CXX_SCAN_FOR_MODULES.rst
@@ -1,7 +1,7 @@
 CXX_SCAN_FOR_MODULES
 --------------------
 
-.. versionadded:: 3.26
+.. versionadded:: 3.28
 
 ``CXX_SCAN_FOR_MODULES`` is a boolean specifying whether CMake will scan C++
 sources in the target for module dependencies.  See also the
@@ -20,8 +20,3 @@ scan the target's ``CXX`` sources at build time.
 Note that scanning is only performed if C++20 or higher is enabled for the
 target.  Scanning for modules in the target's sources belonging to file sets
 of type ``CXX_MODULES`` is always performed.
-
-.. note ::
-
-  This setting is meaningful only when experimental support for C++ modules
-  has been enabled by the ``CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API`` gate.
diff --git a/Help/prop_tgt/IMPORTED_CXX_MODULES_COMPILE_DEFINITIONS.rst b/Help/prop_tgt/IMPORTED_CXX_MODULES_COMPILE_DEFINITIONS.rst
index 88687b2..b068191 100644
--- a/Help/prop_tgt/IMPORTED_CXX_MODULES_COMPILE_DEFINITIONS.rst
+++ b/Help/prop_tgt/IMPORTED_CXX_MODULES_COMPILE_DEFINITIONS.rst
@@ -3,10 +3,6 @@ IMPORTED_CXX_MODULES_COMPILE_DEFINITIONS
 
 .. versionadded:: 3.28
 
-.. note ::
-
-  Experimental. Gated by ``CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API``
-
 Preprocessor definitions for compiling an ``IMPORTED`` target's C++ module
 sources.
 
diff --git a/Help/prop_tgt/IMPORTED_CXX_MODULES_COMPILE_FEATURES.rst b/Help/prop_tgt/IMPORTED_CXX_MODULES_COMPILE_FEATURES.rst
index c3eb7fb..cea359f 100644
--- a/Help/prop_tgt/IMPORTED_CXX_MODULES_COMPILE_FEATURES.rst
+++ b/Help/prop_tgt/IMPORTED_CXX_MODULES_COMPILE_FEATURES.rst
@@ -3,10 +3,6 @@ IMPORTED_CXX_MODULES_COMPILE_FEATURES
 
 .. versionadded:: 3.28
 
-.. note ::
-
-  Experimental. Gated by ``CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API``
-
 Compiler features enabled for this ``IMPORTED`` target's C++ modules.
 
 The value of this property is used by the generators to set the include
diff --git a/Help/prop_tgt/IMPORTED_CXX_MODULES_COMPILE_OPTIONS.rst b/Help/prop_tgt/IMPORTED_CXX_MODULES_COMPILE_OPTIONS.rst
index 5c62c77..cf7bc5b 100644
--- a/Help/prop_tgt/IMPORTED_CXX_MODULES_COMPILE_OPTIONS.rst
+++ b/Help/prop_tgt/IMPORTED_CXX_MODULES_COMPILE_OPTIONS.rst
@@ -3,10 +3,6 @@ IMPORTED_CXX_MODULES_COMPILE_OPTIONS
 
 .. versionadded:: 3.28
 
-.. note ::
-
-  Experimental. Gated by ``CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API``
-
 List of options to pass to the compiler for this ``IMPORTED`` target's C++
 modules.
 
diff --git a/Help/prop_tgt/IMPORTED_CXX_MODULES_INCLUDE_DIRECTORIES.rst b/Help/prop_tgt/IMPORTED_CXX_MODULES_INCLUDE_DIRECTORIES.rst
index 08a993d..46d74ea 100644
--- a/Help/prop_tgt/IMPORTED_CXX_MODULES_INCLUDE_DIRECTORIES.rst
+++ b/Help/prop_tgt/IMPORTED_CXX_MODULES_INCLUDE_DIRECTORIES.rst
@@ -3,10 +3,6 @@ IMPORTED_CXX_MODULES_INCLUDE_DIRECTORIES
 
 .. versionadded:: 3.28
 
-.. note ::
-
-  Experimental. Gated by ``CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API``
-
 List of preprocessor include file search directories when compiling C++
 modules for ``IMPORTED`` targets.
 
diff --git a/Help/prop_tgt/IMPORTED_CXX_MODULES_LINK_LIBRARIES.rst b/Help/prop_tgt/IMPORTED_CXX_MODULES_LINK_LIBRARIES.rst
index 5111dc5..ff5cec8 100644
--- a/Help/prop_tgt/IMPORTED_CXX_MODULES_LINK_LIBRARIES.rst
+++ b/Help/prop_tgt/IMPORTED_CXX_MODULES_LINK_LIBRARIES.rst
@@ -3,9 +3,5 @@ IMPORTED_CXX_MODULES_LINK_LIBRARIES
 
 .. versionadded:: 3.28
 
-.. note ::
-
-  Experimental. Gated by ``CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API``
-
 List of direct dependencies to use for usage requirements for C++ modules in
 the target's C++ modules.
diff --git a/Help/prop_tgt/INTERFACE_CXX_MODULE_SETS.rst b/Help/prop_tgt/INTERFACE_CXX_MODULE_SETS.rst
index c7ed46d..fd6e34b 100644
--- a/Help/prop_tgt/INTERFACE_CXX_MODULE_SETS.rst
+++ b/Help/prop_tgt/INTERFACE_CXX_MODULE_SETS.rst
@@ -1,11 +1,7 @@
 INTERFACE_CXX_MODULE_SETS
 -------------------------
 
-.. versionadded:: 3.25
-
-.. note ::
-
-  Experimental. Gated by ``CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API``
+.. versionadded:: 3.28
 
 Read-only list of the target's ``PUBLIC`` C++ module sets (i.e. all file sets
 with the type ``CXX_MODULES``). Files listed in these C++ module sets can be