fix generate_gir with BothLibraries dependency

Co-authored-by: Xavier Claessens <xclaesse@gmail.com>

mesonbuild/build.py

@@ -774,6 +774,7 @@ def __init__(
         }
         self.pic = False
         self.pie = False
+        self.both_lib: T.Optional[T.Union[StaticLibrary, SharedLibrary]] = None
         # Track build_rpath entries so we can remove them at install time
         self.rpath_dirs_to_remove: T.Set[bytes] = set()
         self.process_sourcelist(sources)
@@ -1740,16 +1741,20 @@ def process_vs_module_defs_kw(self, kwargs: T.Dict[str, T.Any]) -> None:
     def extract_targets_as_list(self, kwargs: T.Dict[str, T.Union[LibTypes, T.Sequence[LibTypes]]], key: T.Literal['link_with', 'link_whole']) -> T.List[LibTypes]:
         bl_type = self.environment.coredata.get_option(OptionKey('default_both_libraries'))
         if bl_type == 'auto':
-            bl_type = 'static' if isinstance(self, StaticLibrary) else 'shared'
-
-        def _resolve_both_libs(lib: LibTypes) -> LibTypes:
-            if isinstance(lib, BothLibraries):
-                return lib.get(bl_type)
-            return lib
+            if isinstance(self, StaticLibrary):
+                bl_type = 'static'
+            elif isinstance(self, SharedLibrary):
+                bl_type = 'shared'
 
         self_libs: T.List[LibTypes] = self.link_targets if key == 'link_with' else self.link_whole_targets
-        lib_list = listify(kwargs.get(key, [])) + self_libs
-        return [_resolve_both_libs(t) for t in lib_list]
+
+        lib_list = []
+        for lib in listify(kwargs.get(key, [])) + self_libs:
+            if isinstance(lib, (Target, BothLibraries)):
+                lib_list.append(lib.get(bl_type))
+            else:
+                lib_list.append(lib)
+        return lib_list
 
     def get(self, lib_type: T.Literal['static', 'shared', 'auto']) -> LibTypes:
         """Base case used by BothLibraries"""
@@ -2204,6 +2209,14 @@ def is_linkable_target(self):
     def is_internal(self) -> bool:
         return not self.install
 
+    def set_shared(self, shared_library: SharedLibrary) -> None:
+        self.both_lib = shared_library
+
+    def get(self, lib_type: T.Literal['static', 'shared', 'auto']) -> LibTypes:
+        if lib_type == 'shared':
+            return self.both_lib or self
+        return self
+
 class SharedLibrary(BuildTarget):
     known_kwargs = known_shlib_kwargs
 
@@ -2470,6 +2483,14 @@ def type_suffix(self):
     def is_linkable_target(self):
         return True
 
+    def set_static(self, static_library: StaticLibrary) -> None:
+        self.both_lib = static_library
+
+    def get(self, lib_type: T.Literal['static', 'shared']) -> LibTypes:
+        if lib_type == 'static':
+            return self.both_lib or self
+        return self
+
 # A shared library that is meant to be used with dlopen rather than linking
 # into something else.
 class SharedModule(SharedLibrary):
@@ -2506,7 +2527,7 @@ def get_default_install_dir(self) -> T.Union[T.Tuple[str, str], T.Tuple[None, No
         return self.environment.get_shared_module_dir(), '{moduledir_shared}'
 
 class BothLibraries(SecondLevelHolder):
-    def __init__(self, shared: SharedLibrary, static: StaticLibrary, preferred_library: Literal['shared', 'static', 'auto']) -> None:
+    def __init__(self, shared: SharedLibrary, static: StaticLibrary, preferred_library: Literal['shared', 'static']) -> None:
         self._preferred_library = preferred_library
         self.shared = shared
         self.static = static
@@ -2914,23 +2935,14 @@ class AliasTarget(RunTarget):
 
     typename = 'alias'
 
-    def __init__(self, name: str, dependencies: T.Sequence[T.Union[Target, BothLibraries]],
+    def __init__(self, name: str, dependencies: T.Sequence[Target],
                  subdir: str, subproject: str, environment: environment.Environment):
-        super().__init__(name, [], list(self._deps_generator(dependencies)), subdir, subproject, environment)
+        super().__init__(name, [], dependencies, subdir, subproject, environment)
 
     def __repr__(self):
         repr_str = "<{0} {1}>"
         return repr_str.format(self.__class__.__name__, self.get_id())
 
-    @staticmethod
-    def _deps_generator(dependencies: T.Sequence[T.Union[Target, BothLibraries]]) -> T.Iterator[Target]:
-        for dep in dependencies:
-            if isinstance(dep, BothLibraries):
-                yield dep.shared
-                yield dep.static
-            else:
-                yield dep
-
 class Jar(BuildTarget):
     known_kwargs = known_jar_kwargs
 

mesonbuild/interpreter/interpreter.py

@@ -31,7 +31,7 @@
 from ..interpreterbase import Disabler, disablerIfNotFound
 from ..interpreterbase import FeatureNew, FeatureDeprecated, FeatureBroken, FeatureNewKwargs
 from ..interpreterbase import ObjectHolder, ContextManagerObject
-from ..interpreterbase import stringifyUserArguments, resolve_second_level_holders
+from ..interpreterbase import stringifyUserArguments
 from ..modules import ExtensionModule, ModuleObject, MutableModuleObject, NewExtensionModule, NotFoundExtensionModule
 from ..optinterpreter import optname_regex
 
@@ -681,7 +681,6 @@ def func_files(self, node: mparser.FunctionNode, args: T.Tuple[T.List[str]], kwa
         KwargInfo('version', (str, NoneType)),
         KwargInfo('objects', ContainerTypeInfo(list, build.ExtractedObjects), listify=True, default=[], since='1.1.0'),
     )
-    @noSecondLevelHolderResolving
     def func_declare_dependency(self, node: mparser.BaseNode, args: T.List[TYPE_var],
                                 kwargs: kwtypes.FuncDeclareDependency) -> dependencies.Dependency:
         deps = kwargs['dependencies']
@@ -1906,15 +1905,12 @@ def func_jar(self, node: mparser.BaseNode,
     @permittedKwargs(known_build_target_kwargs)
     @typed_pos_args('build_target', str, varargs=SOURCES_VARARGS)
     @typed_kwargs('build_target', *BUILD_TARGET_KWS, allow_unknown=True)
-    @noSecondLevelHolderResolving
     def func_build_target(self, node: mparser.BaseNode,
                           args: T.Tuple[str, SourcesVarargsType],
                           kwargs: kwtypes.BuildTarget
                           ) -> T.Union[build.Executable, build.StaticLibrary, build.SharedLibrary,
                                        build.SharedModule, build.BothLibraries, build.Jar]:
         target_type = kwargs['target_type']
-        if target_type not in {'both_libraries', 'library'}:
-            args, kwargs = resolve_second_level_holders(args, kwargs)
 
         if target_type == 'executable':
             return self.build_target(node, args, kwargs, build.Executable)
@@ -2176,13 +2172,19 @@ def func_run_target(self, node: mparser.FunctionNode, args: T.Tuple[str],
     @FeatureNew('alias_target', '0.52.0')
     @typed_pos_args('alias_target', str, varargs=(build.Target, build.BothLibraries), min_varargs=1)
     @noKwargs
-    @noSecondLevelHolderResolving
     def func_alias_target(self, node: mparser.BaseNode, args: T.Tuple[str, T.List[T.Union[build.Target, build.BothLibraries]]],
                           kwargs: TYPE_kwargs) -> build.AliasTarget:
         name, deps = args
         if any(isinstance(d, build.RunTarget) for d in deps):
             FeatureNew.single_use('alias_target that depends on run_targets', '0.60.0', self.subproject)
-        tg = build.AliasTarget(name, deps, self.subdir, self.subproject, self.environment)
+        real_deps: T.List[build.Target] = []
+        for d in deps:
+            if isinstance(d, build.BothLibraries):
+                real_deps.append(d.shared)
+                real_deps.append(d.static)
+            else:
+                real_deps.append(d)
+        tg = build.AliasTarget(name, real_deps, self.subdir, self.subproject, self.environment)
         self.add_target(name, tg)
         return tg
 
@@ -3286,16 +3288,18 @@ def build_both_libraries(self, node: mparser.BaseNode, args: T.Tuple[str, Source
             # Keep only compilers used for linking
             static_lib.compilers = {k: v for k, v in static_lib.compilers.items() if k in compilers.clink_langs}
 
+        # Cross reference them to implement as_shared() and as_static() methods.
+        shared_lib.set_static(static_lib)
+        static_lib.set_shared(shared_lib)
+
         return build.BothLibraries(shared_lib, static_lib, preferred_library)
 
     def build_library(self, node: mparser.BaseNode, args: T.Tuple[str, SourcesVarargsType], kwargs: kwtypes.Library):
         default_library = self.coredata.get_option(OptionKey('default_library', subproject=self.subproject))
         assert isinstance(default_library, str), 'for mypy'
         if default_library == 'shared':
-            args, kwargs = resolve_second_level_holders(args, kwargs)
             return self.build_target(node, args, T.cast('kwtypes.StaticLibrary', kwargs), build.SharedLibrary)
         elif default_library == 'static':
-            args, kwargs = resolve_second_level_holders(args, kwargs)
             return self.build_target(node, args, T.cast('kwtypes.SharedLibrary', kwargs), build.StaticLibrary)
         elif default_library == 'both':
             return self.build_both_libraries(node, args, kwargs)

mesonbuild/interpreter/interpreterobjects.py

@@ -1001,8 +1001,6 @@ class SharedLibraryHolder(BuildTargetHolder[build.SharedLibrary]):
 
 class BothLibrariesHolder(BuildTargetHolder[build.BothLibraries]):
     def __init__(self, libs: build.BothLibraries, interp: 'Interpreter'):
-        # FIXME: This build target always represents the shared library, but
-        # that should be configurable.
         super().__init__(libs, interp)
         self.methods.update({'get_shared_lib': self.get_shared_lib_method,
                              'get_static_lib': self.get_static_lib_method,
@@ -1017,12 +1015,16 @@ def __repr__(self) -> str:
     @noPosargs
     @noKwargs
     def get_shared_lib_method(self, args: T.List[TYPE_var], kwargs: TYPE_kwargs) -> build.SharedLibrary:
-        return self.held_object.shared
+        lib = copy.copy(self.held_object.shared)
+        lib.both_lib = None
+        return lib
 
     @noPosargs
     @noKwargs
     def get_static_lib_method(self, args: T.List[TYPE_var], kwargs: TYPE_kwargs) -> build.StaticLibrary:
-        return self.held_object.static
+        lib = copy.copy(self.held_object.static)
+        lib.both_lib = None
+        return lib
 
 class SharedModuleHolder(BuildTargetHolder[build.SharedModule]):
     pass

test cases/frameworks/38 gir both_libraries/bar.c

@@ -0,0 +1,7 @@
+#include "bar.h"
+#include "foo.h"
+
+int bar_func(void)
+{
+    return foo_func() + 42;
+}

test cases/frameworks/38 gir both_libraries/bar.h

@@ -0,0 +1 @@
+int bar_func(void);

test cases/frameworks/38 gir both_libraries/foo.c

@@ -0,0 +1,6 @@
+#include "foo.h"
+
+int foo_func(void)
+{
+    return 42;
+}

test cases/frameworks/38 gir both_libraries/foo.h

@@ -0,0 +1 @@
+int foo_func(void);

test cases/frameworks/38 gir both_libraries/meson.build

@@ -0,0 +1,42 @@
+project('gir both libraries', 'c')
+
+gir = dependency('gobject-introspection-1.0', required: false)
+if not gir.found()
+  error('MESON_SKIP_TEST gobject-introspection not found.')
+endif
+
+if host_machine.system() == 'cygwin'
+  # FIXME: g-ir-scanner seems broken on cygwin:
+  # ERROR: can't resolve libraries to shared libraries: foo++
+  error('MESON_SKIP_TEST g-ir-scanner is broken on cygwin.')
+endif
+
+gnome = import('gnome')
+
+# Regression test simulating how GStreamer generate its GIRs.
+# Generated gobject-introspection binaries for every GStreamer libraries must
+# first call gst_init() defined in the main libgstreamer, which means they need
+# to link on that lib.
+# A regression caused by https://github.com/mesonbuild/meson/pull/12632 made
+# Meson not link the binary generated for bar with libfoo in the case it uses
+# both_libraries().
+
+libfoo = both_libraries('foo', 'foo.c')
+foo_gir = gnome.generate_gir(libfoo,
+  namespace: 'foo',
+  nsversion: '1.0',
+  sources: ['foo.c', 'foo.h'],
+)
+foo_dep = declare_dependency(
+  link_with: libfoo,
+  sources: foo_gir,
+)
+
+libbar = both_libraries('bar', 'bar.c', dependencies: foo_dep)
+gnome.generate_gir(libbar,
+  namespace: 'bar',
+  nsversion: '1.0',
+  sources: ['bar.c', 'bar.h'],
+  extra_args: '--add-init-section=extern void foo_func(void);foo_func();',
+  dependencies: foo_dep,
+)

test cases/frameworks/38 gir both_libraries/test.json

@@ -0,0 +1,3 @@
+{
+    "expect_skip_on_jobname": ["azure", "macos", "msys2", "cygwin"]
+}