Remove get_configtool_variable()

This also makes it more consistent with get_pkgconfig_variable() which
always return empty value instead of failing when the variable does not
exist. Linking that to self.required makes no sense and was never
documented any way.

3 files changed, 12 insertions, 31 deletions

diff --git a/mesonbuild/dependencies/base.py b/mesonbuild/dependencies/base.py
index 6da9a66..c4861ff 100644
--- a/mesonbuild/dependencies/base.py
+++ b/mesonbuild/dependencies/base.py
@@ -193,9 +193,6 @@ class Dependency(HoldableObject):
     def get_exe_args(self, compiler: 'Compiler') -> T.List[str]:
         return []
 
-    def get_configtool_variable(self, variable_name: str) -> str:
-        raise DependencyException(f'{self.name!r} is not a config-tool dependency')
-
     def get_partial_dependency(self, *, compile_args: bool = False,
                                link_args: bool = False, links: bool = False,
                                includes: bool = False, sources: bool = False) -> 'Dependency':
@@ -292,10 +289,6 @@ class InternalDependency(Dependency):
             return True
         return any(d.is_built() for d in self.ext_deps)
 
-    def get_configtool_variable(self, variable_name: str) -> str:
-        raise DependencyException('Method "get_configtool_variable()" is '
-                                  'invalid for an internal dependency')
-
     def get_partial_dependency(self, *, compile_args: bool = False,
                                link_args: bool = False, links: bool = False,
                                includes: bool = False, sources: bool = False,
diff --git a/mesonbuild/dependencies/configtool.py b/mesonbuild/dependencies/configtool.py
index bd6a9ff..3c52356 100644
--- a/mesonbuild/dependencies/configtool.py
+++ b/mesonbuild/dependencies/configtool.py
@@ -154,17 +154,6 @@ class ConfigToolDependency(ExternalDependency):
     def get_variable_args(self, variable_name: str) -> T.List[str]:
         return [f'--{variable_name}']
 
-    def get_configtool_variable(self, variable_name: str) -> str:
-        p, out, _ = Popen_safe(self.config + self.get_variable_args(variable_name))
-        if p.returncode != 0:
-            if self.required:
-                raise DependencyException(
-                    'Could not get variable "{}" for dependency {}'.format(
-                        variable_name, self.name))
-        variable = out.strip()
-        mlog.debug(f'Got config-tool variable {variable_name} : {variable}')
-        return variable
-
     @staticmethod
     def log_tried() -> str:
         return 'config-tool'
@@ -174,18 +163,11 @@ class ConfigToolDependency(ExternalDependency):
                      default_value: T.Optional[str] = None,
                      pkgconfig_define: PkgConfigDefineType = None) -> str:
         if configtool:
-            # In the not required case '' (empty string) will be returned if the
-            # variable is not found. Since '' is a valid value to return we
-            # set required to True here to force and error, and use the
-            # finally clause to ensure it's restored.
-            restore = self.required
-            self.required = True
-            try:
-                return self.get_configtool_variable(configtool)
-            except DependencyException:
-                pass
-            finally:
-                self.required = restore
+            p, out, _ = Popen_safe(self.config + self.get_variable_args(configtool))
+            if p.returncode == 0:
+                variable = out.strip()
+                mlog.debug(f'Got config-tool variable {configtool} : {variable}')
+                return variable
         if default_value is not None:
             return default_value
         raise DependencyException(f'Could not get config-tool variable and no default provided for {self!r}')
diff --git a/mesonbuild/interpreter/interpreterobjects.py b/mesonbuild/interpreter/interpreterobjects.py
index a76a0cb..46b4cc1 100644
--- a/mesonbuild/interpreter/interpreterobjects.py
+++ b/mesonbuild/interpreter/interpreterobjects.py
@@ -506,7 +506,13 @@ class DependencyHolder(ObjectHolder[Dependency]):
     @noKwargs
     @typed_pos_args('dependency.get_config_tool_variable', str)
     def configtool_method(self, args: T.Tuple[str], kwargs: TYPE_kwargs) -> str:
-        return self.held_object.get_configtool_variable(args[0])
+        from ..dependencies.configtool import ConfigToolDependency
+        if not isinstance(self.held_object, ConfigToolDependency):
+            raise InvalidArguments(f'{self.held_object.get_name()!r} is not a config-tool dependency')
+        return self.held_object.get_variable(
+            configtool=args[0],
+            default_value='',
+        )
 
     @FeatureNew('dependency.partial_dependency', '0.46.0')
     @noPosargs