Ninja Multi-Config: Rename variable to be more consistent

Also make some tweaks to the documentation.

Help/generator/Ninja Multi-Config.rst

@@ -19,8 +19,8 @@ the desired ``build-<Config>.ninja`` file with ``ninja -f``. Running
 ``build-<Config>.ninja`` as the ``-f`` file and ``<target>`` as the build
 target.
 
-If :variable:`CMAKE_NINJA_CROSS_CONFIG_ENABLE` is turned on, executables and
-libraries of any configuration can be built regardless of which
+If :variable:`CMAKE_NINJA_MULTI_CROSS_CONFIG_ENABLE` is turned on, executables
+and libraries of any configuration can be built regardless of which
 ``build-<Config>.ninja`` file is used, simply by specifying
 ``<target>:<OtherConfig>`` as the Ninja target. You can also specify
 ``<target>:all`` to build a target in all configurations. Each
@@ -31,8 +31,8 @@ targets will always use the configuration specified in
 Ninja for the same file to be output with different commands in the same build
 graph.
 
-If :variable:`CMAKE_NINJA_CROSS_CONFIG_ENABLE` is not enabled, you can still
-build any target in ``build-<Config>.ninja`` by specifying
+If :variable:`CMAKE_NINJA_MULTI_CROSS_CONFIG_ENABLE` is not enabled, you can
+still build any target in ``build-<Config>.ninja`` by specifying
 ``<target>:<Config>`` or ``<target>``, but not ``<target>:<OtherConfig>`` or
 ``<target>:all``.
 
@@ -60,8 +60,8 @@ This would build the ``Debug`` configuration of ``generator``, which would be
 used to generate ``generated.c``, which would be used to build the ``Debug``
 configuration of ``generated``.
 
-But if :variable:`CMAKE_NINJA_CROSS_CONFIG_ENABLE` is enabled, and you run the
-following instead:
+But if :variable:`CMAKE_NINJA_MULTI_CROSS_CONFIG_ENABLE` is enabled, and you
+run the following instead:
 
 .. code-block:: shell
 

Help/manual/cmake-variables.7.rst

@@ -215,7 +215,6 @@ Variables that Change Behavior
    /variable/CMAKE_MESSAGE_INDENT
    /variable/CMAKE_MESSAGE_LOG_LEVEL
    /variable/CMAKE_MODULE_PATH
-   /variable/CMAKE_NINJA_MULTI_DEFAULT_BUILD_TYPE
    /variable/CMAKE_POLICY_DEFAULT_CMPNNNN
    /variable/CMAKE_POLICY_WARNING_CMPNNNN
    /variable/CMAKE_PREFIX_PATH
@@ -423,7 +422,8 @@ Variables that Control the Build
    /variable/CMAKE_MODULE_LINKER_FLAGS_INIT
    /variable/CMAKE_MSVCIDE_RUN_PATH
    /variable/CMAKE_MSVC_RUNTIME_LIBRARY
-   /variable/CMAKE_NINJA_CROSS_CONFIG_ENABLE
+   /variable/CMAKE_NINJA_MULTI_CROSS_CONFIG_ENABLE
+   /variable/CMAKE_NINJA_MULTI_DEFAULT_BUILD_TYPE
    /variable/CMAKE_NINJA_OUTPUT_PATH_PREFIX
    /variable/CMAKE_NO_BUILTIN_CHRPATH
    /variable/CMAKE_NO_SYSTEM_FROM_IMPORTED

Help/variable/CMAKE_NINJA_CROSS_CONFIG_ENABLE.rst

@@ -1,6 +0,0 @@
-CMAKE_NINJA_CROSS_CONFIG_ENABLE
--------------------------------
-
-If this variable is enabled, cross-configuration building is enabled in the
-:generator:`Ninja Multi-Config` generator. See the generator's description for
-more details.

Help/variable/CMAKE_NINJA_MULTI_CROSS_CONFIG_ENABLE.rst

@@ -0,0 +1,10 @@
+CMAKE_NINJA_MULTI_CROSS_CONFIG_ENABLE
+-------------------------------------
+
+If this variable is enabled, cross-configuration building is enabled in the
+:generator:`Ninja Multi-Config` generator. See the generator's description for
+more details. This variable is ``OFF`` by default.
+
+This variable is meant to be set from the command line (via
+``-DCMAKE_NINJA_MULTI_CROSS_CONFIG_ENABLE:BOOL=ON``) and should not be set from
+project code.

Source/cmGlobalNinjaGenerator.cxx

@@ -2203,7 +2203,7 @@ bool cmGlobalNinjaGenerator::WriteDyndepFile(
 bool cmGlobalNinjaGenerator::EnableCrossConfigBuild() const
 {
   return this->IsMultiConfig() &&
-    this->Makefiles.front()->IsOn("CMAKE_NINJA_CROSS_CONFIG_ENABLE");
+    this->Makefiles.front()->IsOn("CMAKE_NINJA_MULTI_CROSS_CONFIG_ENABLE");
 }
 
 int cmcmd_cmake_ninja_dyndep(std::vector<std::string>::const_iterator argBeg,

Tests/RunCMake/NinjaMultiConfig/RunCMakeTest.cmake

@@ -76,7 +76,7 @@ endfunction()
 set(RunCMake_TEST_NO_CLEAN 1)
 
 set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/Simple-build)
-set(RunCMake_TEST_OPTIONS "-DCMAKE_NINJA_MULTI_DEFAULT_BUILD_TYPE=RelWithDebInfo;-DCMAKE_NINJA_CROSS_CONFIG_ENABLE=ON")
+set(RunCMake_TEST_OPTIONS "-DCMAKE_NINJA_MULTI_DEFAULT_BUILD_TYPE=RelWithDebInfo;-DCMAKE_NINJA_MULTI_CROSS_CONFIG_ENABLE=ON")
 run_cmake_configure(Simple)
 unset(RunCMake_TEST_OPTIONS)
 include(${RunCMake_TEST_BINARY_DIR}/target_files.cmake)
@@ -117,7 +117,7 @@ run_ninja(SimpleNoCross all-all build-Debug.ninja all:all)
 run_cmake_build(SimpleNoCross all-clean Debug clean:all)
 
 set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/CustomCommandGenerator-build)
-set(RunCMake_TEST_OPTIONS "-DCMAKE_NINJA_CROSS_CONFIG_ENABLE=ON")
+set(RunCMake_TEST_OPTIONS "-DCMAKE_NINJA_MULTI_CROSS_CONFIG_ENABLE=ON")
 run_cmake_configure(CustomCommandGenerator)
 unset(RunCMake_TEST_OPTIONS)
 include(${RunCMake_TEST_BINARY_DIR}/target_files.cmake)
@@ -134,7 +134,7 @@ run_ninja(CustomCommandGenerator release-in-debug-graph build-Debug.ninja genera
 run_cmake_command(CustomCommandGenerator-release-in-debug-graph-generated "${TARGET_FILE_generated_Release}")
 
 set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/CustomCommandsAndTargets-build)
-set(RunCMake_TEST_OPTIONS "-DCMAKE_NINJA_CROSS_CONFIG_ENABLE=ON")
+set(RunCMake_TEST_OPTIONS "-DCMAKE_NINJA_MULTI_CROSS_CONFIG_ENABLE=ON")
 run_cmake_configure(CustomCommandsAndTargets)
 unset(RunCMake_TEST_OPTIONS)
 include(${RunCMake_TEST_BINARY_DIR}/target_files.cmake)
@@ -150,7 +150,7 @@ run_cmake_build(CustomCommandsAndTargets debug-targetpostbuild Debug TopTargetPo
 run_ninja(CustomCommandsAndTargets release-targetpostbuild build-Release.ninja SubdirTargetPostBuild)
 
 set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/PostfixAndLocation-build)
-set(RunCMake_TEST_OPTIONS "-DCMAKE_CONFIGURATION_TYPES=Debug\\;Release;-DCMAKE_NINJA_CROSS_CONFIG_ENABLE=ON")
+set(RunCMake_TEST_OPTIONS "-DCMAKE_CONFIGURATION_TYPES=Debug\\;Release;-DCMAKE_NINJA_MULTI_CROSS_CONFIG_ENABLE=ON")
 run_cmake_configure(PostfixAndLocation)
 unset(RunCMake_TEST_OPTIONS)
 include(${RunCMake_TEST_BINARY_DIR}/target_files.cmake)
@@ -165,14 +165,14 @@ run_ninja(Clean release-notall build-Release.ninja exenotall)
 run_cmake_build(Clean release-clean Release clean)
 
 set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/AdditionalCleanFiles-build)
-set(RunCMake_TEST_OPTIONS "-DCMAKE_NINJA_CROSS_CONFIG_ENABLE=ON")
+set(RunCMake_TEST_OPTIONS "-DCMAKE_NINJA_MULTI_CROSS_CONFIG_ENABLE=ON")
 run_cmake_configure(AdditionalCleanFiles)
 unset(RunCMake_TEST_OPTIONS)
 run_cmake_build(AdditionalCleanFiles release-clean Release clean)
 run_ninja(AdditionalCleanFiles all-clean build-Debug.ninja clean:all)
 
 set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/Install-build)
-set(RunCMake_TEST_OPTIONS "-DCMAKE_INSTALL_PREFIX=${RunCMake_TEST_BINARY_DIR}/install;-DCMAKE_NINJA_CROSS_CONFIG_ENABLE=ON")
+set(RunCMake_TEST_OPTIONS "-DCMAKE_INSTALL_PREFIX=${RunCMake_TEST_BINARY_DIR}/install;-DCMAKE_NINJA_MULTI_CROSS_CONFIG_ENABLE=ON")
 run_cmake_configure(Install)
 unset(RunCMake_TEST_OPTIONS)
 include(${RunCMake_TEST_BINARY_DIR}/target_files.cmake)
@@ -194,7 +194,7 @@ endif()
 
 if(CMake_TEST_Qt5)
   set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/Qt5-build)
-  set(RunCMake_TEST_OPTIONS "-DCMAKE_NINJA_CROSS_CONFIG_ENABLE=ON")
+  set(RunCMake_TEST_OPTIONS "-DCMAKE_NINJA_MULTI_CROSS_CONFIG_ENABLE=ON")
   run_cmake_configure(Qt5)
   unset(RunCMake_TEST_OPTIONS)
   include(${RunCMake_TEST_BINARY_DIR}/target_files.cmake)