Add get_variable() system dependency

mesonbuild/dependencies/base.py

@@ -237,7 +237,7 @@ class Dependency(HoldableObject):
 
     def get_variable(self, *, cmake: T.Optional[str] = None, pkgconfig: T.Optional[str] = None,
                      configtool: T.Optional[str] = None, internal: T.Optional[str] = None,
-                     default_value: T.Optional[str] = None,
+                     system: T.Optional[str] = None, default_value: T.Optional[str] = None,
                      pkgconfig_define: PkgConfigDefineType = None) -> str:
         if default_value is not None:
             return default_value
@@ -329,7 +329,7 @@ class InternalDependency(Dependency):
 
     def get_variable(self, *, cmake: T.Optional[str] = None, pkgconfig: T.Optional[str] = None,
                      configtool: T.Optional[str] = None, internal: T.Optional[str] = None,
-                     default_value: T.Optional[str] = None,
+                     system: T.Optional[str] = None, default_value: T.Optional[str] = None,
                      pkgconfig_define: PkgConfigDefineType = None) -> str:
         val = self.variables.get(internal, default_value)
         if val is not None:

mesonbuild/dependencies/cmake.py

@@ -617,7 +617,7 @@ class CMakeDependency(ExternalDependency):
 
     def get_variable(self, *, cmake: T.Optional[str] = None, pkgconfig: T.Optional[str] = None,
                      configtool: T.Optional[str] = None, internal: T.Optional[str] = None,
-                     default_value: T.Optional[str] = None,
+                     system: T.Optional[str] = None, default_value: T.Optional[str] = None,
                      pkgconfig_define: PkgConfigDefineType = None) -> str:
         if cmake and self.traceparser is not None:
             try:

mesonbuild/dependencies/configtool.py

@@ -150,7 +150,7 @@ class ConfigToolDependency(ExternalDependency):
 
     def get_variable(self, *, cmake: T.Optional[str] = None, pkgconfig: T.Optional[str] = None,
                      configtool: T.Optional[str] = None, internal: T.Optional[str] = None,
-                     default_value: T.Optional[str] = None,
+                     system: T.Optional[str] = None, default_value: T.Optional[str] = None,
                      pkgconfig_define: PkgConfigDefineType = None) -> str:
         if configtool:
             p, out, _ = Popen_safe(self.config + self.get_variable_args(configtool))

mesonbuild/dependencies/pkgconfig.py

@@ -557,7 +557,7 @@ class PkgConfigDependency(ExternalDependency):
 
     def get_variable(self, *, cmake: T.Optional[str] = None, pkgconfig: T.Optional[str] = None,
                      configtool: T.Optional[str] = None, internal: T.Optional[str] = None,
-                     default_value: T.Optional[str] = None,
+                     system: T.Optional[str] = None, default_value: T.Optional[str] = None,
                      pkgconfig_define: PkgConfigDefineType = None) -> str:
         if pkgconfig:
             try:

mesonbuild/interpreter/interpreterobjects.py

@@ -545,6 +545,7 @@ class DependencyHolder(ObjectHolder[Dependency]):
         KwargInfo('pkgconfig', (str, NoneType)),
         KwargInfo('configtool', (str, NoneType)),
         KwargInfo('internal', (str, NoneType), since='0.54.0'),
+        KwargInfo('system', (str, NoneType), since='1.6.0'),
         KwargInfo('default_value', (str, NoneType)),
         PKGCONFIG_DEFINE_KW,
     )
@@ -561,6 +562,7 @@ class DependencyHolder(ObjectHolder[Dependency]):
             pkgconfig=kwargs['pkgconfig'] or default_varname,
             configtool=kwargs['configtool'] or default_varname,
             internal=kwargs['internal'] or default_varname,
+            system=kwargs['system'] or default_varname,
             default_value=kwargs['default_value'],
             pkgconfig_define=kwargs['pkgconfig_define'],
         )

mesonbuild/interpreter/kwargs.py

@@ -268,6 +268,7 @@ class DependencyGetVariable(TypedDict):
     pkgconfig: T.Optional[str]
     configtool: T.Optional[str]
     internal: T.Optional[str]
+    system: T.Optional[str]
     default_value: T.Optional[str]
     pkgconfig_define: PkgConfigDefineType