include_type: Add CMake subporject dependency method (fixes #6879)

4 files changed, 21 insertions, 5 deletions

diff --git a/docs/markdown/CMake-module.md b/docs/markdown/CMake-module.md
index 48c3d75b1..f811ab48e 100644
--- a/docs/markdown/CMake-module.md
+++ b/docs/markdown/CMake-module.md
@@ -133,7 +133,10 @@ kept for compatibility. It will not work together with the `options` kwarg.
 This object is returned by the `subproject` function described above
 and supports the following methods:
 
- - `dependency(target)` returns a dependency object for any CMake target.
+ - `dependency(target)` returns a dependency object for any CMake target. The
+   `include_type` kwarg *(new in 0.56.0)* controls the include type of the
+   returned dependency object similar to the same kwarg in the
+   [`dependency()`](Reference-manual.md#dependency) function.
  - `include_directories(target)` returns a meson `include_directories()`
    object for the specified target. Using this function is not necessary
    if the dependency object is used.
diff --git a/docs/markdown/snippets/cmake_include_type.md b/docs/markdown/snippets/cmake_include_type.md
new file mode 100644
index 000000000..f8637c021
--- /dev/null
+++ b/docs/markdown/snippets/cmake_include_type.md
@@ -0,0 +1,5 @@
+## `include_type` support for the CMake subproject object dependency method
+
+The `dependency()` method of the CMake subproject object now also supports the
+`include_type` kwarg which is similar to the sane kwarg in the `dependency()`
+function.
diff --git a/mesonbuild/modules/cmake.py b/mesonbuild/modules/cmake.py
index 238375302..35c85a790 100644
--- a/mesonbuild/modules/cmake.py
+++ b/mesonbuild/modules/cmake.py
@@ -20,7 +20,7 @@ from . import ExtensionModule, ModuleReturnValue
 
 from .. import build, dependencies, mesonlib, mlog
 from ..cmake import SingleTargetOptions, TargetOptions, cmake_defines_to_args
-from ..interpreter import ConfigurationDataHolder, InterpreterException, SubprojectHolder
+from ..interpreter import ConfigurationDataHolder, InterpreterException, SubprojectHolder, DependencyHolder
 from ..interpreterbase import (
     InterpreterObject,
     ObjectHolder,
@@ -105,11 +105,18 @@ class CMakeSubprojectHolder(InterpreterObject, ObjectHolder):
     def get_variable(self, args, kwargs):
         return self.held_object.get_variable_method(args, kwargs)
 
-    @noKwargs
+    @FeatureNewKwargs('dependency', '0.56.0', ['include_type'])
+    @permittedKwargs({'include_type'})
     @stringArgs
     def dependency(self, args, kwargs):
         info = self._args_to_info(args)
-        return self.get_variable([info['dep']], kwargs)
+        orig = self.get_variable([info['dep']], {})
+        assert isinstance(orig, DependencyHolder)
+        actual = orig.include_type_method([], {})
+        if 'include_type' in kwargs and kwargs['include_type'] != actual:
+            mlog.debug('Current include type is {}. Converting to requested {}'.format(actual, kwargs['include_type']))
+            return orig.as_system_method([kwargs['include_type']], {})
+        return orig
 
     @noKwargs
     @stringArgs
diff --git a/test cases/cmake/1 basic/meson.build b/test cases/cmake/1 basic/meson.build
index 19c87c441..246473904 100644
--- a/test cases/cmake/1 basic/meson.build
+++ b/test cases/cmake/1 basic/meson.build
@@ -3,11 +3,12 @@ project('cmakeSubTest', ['c', 'cpp'])
 cm = import('cmake')
 
 sub_pro = cm.subproject('cmMod')
-sub_dep = sub_pro.dependency('cmModLib++')
+sub_dep = sub_pro.dependency('cmModLib++', include_type: 'system')
 
 assert(sub_pro.found(), 'found() method reports not found, but should be found')
 assert(sub_pro.target_list() == ['cmModLib++'], 'There should be exactly one target')
 assert(sub_pro.target_type('cmModLib++') == 'shared_library', 'Target type should be shared_library')
+assert(sub_dep.include_type() == 'system', 'the include_type kwarg of dependency() works')
 
 exe1 = executable('main', ['main.cpp'], dependencies: [sub_dep])
 test('test1', exe1)