Merge pull request #2711 from xclaesse/both-library

Add both_library() to build both shared and static library

12 files changed, 295 insertions, 196 deletions

diff --git a/docs/markdown/Reference-manual.md b/docs/markdown/Reference-manual.md
index 5109b25..d98fc19 100644
--- a/docs/markdown/Reference-manual.md
+++ b/docs/markdown/Reference-manual.md
@@ -112,6 +112,24 @@ run. The behavior of this function is identical to `test` with the
 exception that there is no `is_parallel` keyword, because benchmarks
 are never run in parallel.
 
+### both_libraries()
+
+``` meson
+    buildtarget both_libraries(library_name, list_of_sources, ...)
+```
+
+Builds both a static and shared library with the given sources. Positional and
+keyword arguments are otherwise the same as for [`library`](#library). Source
+files will be compiled only once and object files will be reused to build both
+shared and static libraries, unless `b_staticpic` user option or `pic` argument
+are set to false in which case sources will be compiled twice.
+
+The returned [buildtarget](#build-target-object) always represents the shared
+library. In addition it supports the following extra methods:
+
+- `get_shared_lib()` returns the shared library build target
+- `get_static_lib()` returns the static library build target
+
 ### build_target()
 
 Creates a build target whose type can be set dynamically with the
@@ -885,10 +903,11 @@ dropped. That means that `join_paths('foo', '/bar')` returns `/bar`.
     buildtarget library(library_name, list_of_sources, ...)
 ```
 
-Builds a library that is either static or shared depending on the
-value of `default_library` user option. You should use this instead of
-[`shared_library`](#shared_library) or
-[`static_library`](#static_library) most of the time. This allows you
+Builds a library that is either static, shared or both depending on the value of
+`default_library` user option. You should use this instead of
+[`shared_library`](#shared_library),
+[`static_library`](#static_library) or
+[`both_libraries`](#both_libraries) most of the time. This allows you
 to toggle your entire project (including subprojects) from shared to
 static with only one option.
 
@@ -911,7 +930,8 @@ The keyword arguments for this are the same as for [`executable`](#executable) w
   libraries. Defaults to `dylib` for shared libraries and `rlib` for
   static libraries.
 
-`static_library` and `shared_library` also accept these keyword arguments.
+`static_library`, `shared_library` and `both_libraries` also accept these keyword
+arguments.
 
 ### message()
 
@@ -1670,7 +1690,8 @@ These are objects returned by the [functions listed above](#functions).
 ### `build target` object
 
 A build target is either an [executable](#executable),
-[shared](#shared_library), [static library](#static_library) or
+[shared library](#shared_library), [static library](#static_library),
+[both shared and static library](#both_libraries) or
 [shared module](#shared_module).
 
 - `extract_all_objects()` is same as `extract_objects` but returns all
diff --git a/docs/markdown/snippets/both-libraries.md b/docs/markdown/snippets/both-libraries.md
new file mode 100644
index 0000000..1632f63
--- /dev/null
+++ b/docs/markdown/snippets/both-libraries.md
@@ -0,0 +1,9 @@
+## Building both shared and static libraries
+
+A new function `both_libraries()` has been added to build both shared and static
+libraries at the same time. Source files will be compiled only once and object
+files will be reused to build both shared and static libraries, unless
+`b_staticpic` user option or `pic` argument are set to false in which case
+sources will be compiled twice.
+
+The returned `buildtarget` object always represents the shared library.
diff --git a/mesonbuild/backend/backends.py b/mesonbuild/backend/backends.py
index ad45204..916f680 100644
--- a/mesonbuild/backend/backends.py
+++ b/mesonbuild/backend/backends.py
@@ -22,6 +22,7 @@ import json
 import subprocess
 from ..mesonlib import MesonException
 from ..mesonlib import get_compiler_for_source, classify_unity_sources
+from ..mesonlib import File
 from ..compilers import CompilerArgs
 from collections import OrderedDict
 import shlex
@@ -414,11 +415,20 @@ class Backend:
             objname = objname.replace('/', '_').replace('\\', '_')
             objpath = os.path.join(proj_dir_to_build_root, targetdir, objname)
             return [objpath]
-        for osrc in extobj.srclist:
+
+        sources = list(extobj.srclist)
+        for gensrc in extobj.genlist:
+            for s in gensrc.get_outputs():
+                path = self.get_target_generated_dir(extobj.target, gensrc, s)
+                dirpart, fnamepart = os.path.split(path)
+                sources.append(File(True, dirpart, fnamepart))
+
+        for osrc in sources:
             objname = self.object_filename_from_source(extobj.target, osrc, False)
             if objname:
                 objpath = os.path.join(proj_dir_to_build_root, targetdir, objname)
                 result.append(objpath)
+
         return result
 
     def get_pch_include_args(self, compiler, target):
diff --git a/mesonbuild/build.py b/mesonbuild/build.py
index aca592e..08e0c9d 100644
--- a/mesonbuild/build.py
+++ b/mesonbuild/build.py
@@ -26,67 +26,64 @@ from .mesonlib import get_filenames_templates_dict, substitute_values
 from .mesonlib import for_windows, for_darwin, for_cygwin, for_android, has_path_sep
 from .compilers import is_object, clike_langs, sort_clike, lang_suffixes
 
-known_basic_kwargs = {'install': True,
-                      'c_pch': True,
-                      'cpp_pch': True,
-                      'c_args': True,
-                      'objc_args': True,
-                      'objcpp_args': True,
-                      'cpp_args': True,
-                      'cs_args': True,
-                      'vala_args': True,
-                      'fortran_args': True,
-                      'd_args': True,
-                      'd_import_dirs': True,
-                      'd_unittest': True,
-                      'd_module_versions': True,
-                      'java_args': True,
-                      'rust_args': True,
-                      'link_args': True,
-                      'link_depends': True,
-                      'link_with': True,
-                      'link_whole': True,
-                      'implicit_include_directories': True,
-                      'include_directories': True,
-                      'dependencies': True,
-                      'install_dir': True,
-                      'main_class': True,
-                      'name_suffix': True,
-                      'gui_app': True,
-                      'extra_files': True,
-                      'install_rpath': True,
-                      'build_rpath': True,
-                      'resources': True,
-                      'sources': True,
-                      'objects': True,
-                      'native': True,
-                      'build_by_default': True,
-                      'override_options': True,
-                      }
-
-# These contain kwargs supported by both static and shared libraries. These are
-# combined here because a library() call might be shared_library() or
-# static_library() at runtime based on the configuration.
-# FIXME: Find a way to pass that info down here so we can have proper target
-# kwargs checking when specifically using shared_library() or static_library().
-known_lib_kwargs = known_basic_kwargs.copy()
-known_lib_kwargs.update({'version': True, # Only for shared libs
-                         'soversion': True, # Only for shared libs
-                         'name_prefix': True,
-                         'vs_module_defs': True, # Only for shared libs
-                         'vala_header': True,
-                         'vala_vapi': True,
-                         'vala_gir': True,
-                         'pic': True, # Only for static libs
-                         'rust_crate_type': True, # Only for Rust libs
-                         })
-
-known_exe_kwargs = known_basic_kwargs.copy()
-known_exe_kwargs.update({'implib': True,
-                         'export_dynamic': True
-                         })
-known_jar_kwargs = known_basic_kwargs.copy()
-known_jar_kwargs.update({'target_type': 'jar'})
+pch_kwargs = set(['c_pch', 'cpp_pch'])
+
+lang_arg_kwargs = set([
+    'c_args',
+    'cpp_args',
+    'd_args',
+    'd_import_dirs',
+    'd_unittest',
+    'd_module_versions',
+    'fortran_args',
+    'java_args',
+    'objc_args',
+    'objcpp_args',
+    'rust_args',
+    'vala_args',
+    'cs_args',
+])
+
+vala_kwargs = set(['vala_header', 'vala_gir', 'vala_vapi'])
+rust_kwargs = set(['rust_crate_type'])
+cs_kwargs = set(['resources', 'cs_args'])
+
+buildtarget_kwargs = set([
+    'build_by_default',
+    'build_rpath',
+    'dependencies',
+    'extra_files',
+    'gui_app',
+    'link_with',
+    'link_whole',
+    'link_args',
+    'link_depends',
+    'implicit_include_directories',
+    'include_directories',
+    'install',
+    'install_rpath',
+    'install_dir',
+    'name_prefix',
+    'name_suffix',
+    'native',
+    'objects',
+    'override_options',
+    'sources',
+])
+
+known_build_target_kwargs = (
+    buildtarget_kwargs |
+    lang_arg_kwargs |
+    pch_kwargs |
+    vala_kwargs |
+    rust_kwargs |
+    cs_kwargs)
+
+known_exe_kwargs = known_build_target_kwargs | {'implib', 'export_dynamic'}
+known_shlib_kwargs = known_build_target_kwargs | {'version', 'soversion', 'vs_module_defs'}
+known_shmod_kwargs = known_build_target_kwargs
+known_stlib_kwargs = known_build_target_kwargs | {'pic'}
+known_jar_kwargs = known_exe_kwargs | {'main_class'}
 
 class InvalidArguments(MesonException):
     pass
@@ -214,9 +211,10 @@ class ExtractedObjects:
     '''
     Holds a list of sources for which the objects must be extracted
     '''
-    def __init__(self, target, srclist, is_unity):
+    def __init__(self, target, srclist, genlist, is_unity):
         self.target = target
         self.srclist = srclist
+        self.genlist = genlist
         if is_unity:
             self.check_unity_compatible()
 
@@ -337,6 +335,8 @@ a hard error in the future.''' % name)
 
 
 class BuildTarget(Target):
+    known_kwargs = known_build_target_kwargs
+
     def __init__(self, name, subdir, subproject, is_cross, sources, objects, environment, kwargs):
         super().__init__(name, subdir, subproject, True)
         self.is_cross = is_cross
@@ -396,7 +396,7 @@ class BuildTarget(Target):
     def check_unknown_kwargs(self, kwargs):
         # Override this method in derived classes that have more
         # keywords.
-        self.check_unknown_kwargs_int(kwargs, known_basic_kwargs)
+        self.check_unknown_kwargs_int(kwargs, self.known_kwargs)
 
     def check_unknown_kwargs_int(self, kwargs, known_kwargs):
         unknowns = []
@@ -626,13 +626,17 @@ class BuildTarget(Target):
             if not isinstance(src, str):
                 raise MesonException('Object extraction arguments must be strings.')
             src = File(False, self.subdir, src)
+            # FIXME: It could be a generated source
             if src not in self.sources:
                 raise MesonException('Tried to extract unknown source %s.' % src)
             obj_src.append(src)
-        return ExtractedObjects(self, obj_src, self.is_unity)
+        return ExtractedObjects(self, obj_src, [], self.is_unity)
 
     def extract_all_objects(self):
-        return ExtractedObjects(self, self.sources, self.is_unity)
+        # FIXME: We should add support for transitive extract_objects()
+        if self.objects:
+            raise MesonException('Cannot extract objects from a target that itself has extracted objects')
+        return ExtractedObjects(self, self.sources, self.generated, self.is_unity)
 
     def get_all_link_deps(self):
         return self.get_transitive_link_deps()
@@ -1184,6 +1188,8 @@ class GeneratedList:
         return self.extra_args
 
 class Executable(BuildTarget):
+    known_kwargs = known_exe_kwargs
+
     def __init__(self, name, subdir, subproject, is_cross, sources, objects, environment, kwargs):
         super().__init__(name, subdir, subproject, is_cross, sources, objects, environment, kwargs)
         # Unless overridden, executables have no suffix or prefix. Except on
@@ -1239,9 +1245,6 @@ class Executable(BuildTarget):
     def type_suffix(self):
         return "@exe"
 
-    def check_unknown_kwargs(self, kwargs):
-        self.check_unknown_kwargs_int(kwargs, known_exe_kwargs)
-
     def get_import_filename(self):
         """
         The name of the import library that will be outputted by the compiler
@@ -1259,6 +1262,8 @@ class Executable(BuildTarget):
         return self.is_linkwithable
 
 class StaticLibrary(BuildTarget):
+    known_kwargs = known_stlib_kwargs
+
     def __init__(self, name, subdir, subproject, is_cross, sources, objects, environment, kwargs):
         if 'pic' not in kwargs and 'b_staticpic' in environment.coredata.base_options:
             kwargs['pic'] = environment.coredata.base_options['b_staticpic'].value
@@ -1297,9 +1302,6 @@ class StaticLibrary(BuildTarget):
     def type_suffix(self):
         return "@sta"
 
-    def check_unknown_kwargs(self, kwargs):
-        self.check_unknown_kwargs_int(kwargs, known_lib_kwargs)
-
     def process_kwargs(self, kwargs, environment):
         super().process_kwargs(kwargs, environment)
         if 'rust_crate_type' in kwargs:
@@ -1313,6 +1315,8 @@ class StaticLibrary(BuildTarget):
         return True
 
 class SharedLibrary(BuildTarget):
+    known_kwargs = known_shlib_kwargs
+
     def __init__(self, name, subdir, subproject, is_cross, sources, objects, environment, kwargs):
         self.soversion = None
         self.ltversion = None
@@ -1501,9 +1505,6 @@ class SharedLibrary(BuildTarget):
             else:
                 raise InvalidArguments('Invalid rust_crate_type "{0}": must be a string.'.format(rust_crate_type))
 
-    def check_unknown_kwargs(self, kwargs):
-        self.check_unknown_kwargs_int(kwargs, known_lib_kwargs)
-
     def get_import_filename(self):
         """
         The name of the import library that will be outputted by the compiler
@@ -1559,6 +1560,8 @@ class SharedLibrary(BuildTarget):
 # A shared library that is meant to be used with dlopen rather than linking
 # into something else.
 class SharedModule(SharedLibrary):
+    known_kwargs = known_shmod_kwargs
+
     def __init__(self, name, subdir, subproject, is_cross, sources, objects, environment, kwargs):
         if 'version' in kwargs:
             raise MesonException('Shared modules must not specify the version kwarg.')
@@ -1568,19 +1571,20 @@ class SharedModule(SharedLibrary):
         self.import_filename = None
 
 class CustomTarget(Target):
-    known_kwargs = {'input': True,
-                    'output': True,
-                    'command': True,
-                    'capture': False,
-                    'install': True,
-                    'install_dir': True,
-                    'build_always': True,
-                    'depends': True,
-                    'depend_files': True,
-                    'depfile': True,
-                    'build_by_default': True,
-                    'override_options': True,
-                    }
+    known_kwargs = set([
+        'input',
+        'output',
+        'command',
+        'capture',
+        'install',
+        'install_dir',
+        'build_always',
+        'depends',
+        'depend_files',
+        'depfile',
+        'build_by_default',
+        'override_options',
+    ])
 
     def __init__(self, name, subdir, subproject, kwargs, absolute_paths=False):
         super().__init__(name, subdir, subproject, False)
@@ -1814,6 +1818,8 @@ class RunTarget(Target):
         return "@run"
 
 class Jar(BuildTarget):
+    known_kwargs = known_jar_kwargs
+
     def __init__(self, name, subdir, subproject, is_cross, sources, objects, environment, kwargs):
         super().__init__(name, subdir, subproject, is_cross, sources, objects, environment, kwargs)
         for s in self.sources:
@@ -1836,9 +1842,6 @@ class Jar(BuildTarget):
         # All jar targets are installable.
         pass
 
-    def check_unknown_kwargs(self, kwargs):
-        self.check_unknown_kwargs_int(kwargs, known_jar_kwargs)
-
 class CustomTargetIndex:
 
     """A special opaque object returned by indexing a CustomTarget. This object
diff --git a/mesonbuild/coredata.py b/mesonbuild/coredata.py
index 993effc..88d007a 100644
--- a/mesonbuild/coredata.py
+++ b/mesonbuild/coredata.py
@@ -422,7 +422,7 @@ builtin_options = {
     'werror':          [UserBooleanOption, 'Treat warnings as errors.', False],
     'warning_level':   [UserComboOption, 'Compiler warning level to use.', ['1', '2', '3'], '1'],
     'layout':          [UserComboOption, 'Build directory layout.', ['mirror', 'flat'], 'mirror'],
-    'default_library': [UserComboOption, 'Default library type.', ['shared', 'static'], 'shared'],
+    'default_library': [UserComboOption, 'Default library type.', ['shared', 'static', 'both'], 'shared'],
     'backend':         [UserComboOption, 'Backend to use.', backendlist, 'ninja'],
     'stdsplit':        [UserBooleanOption, 'Split stdout and stderr in test logs.', True],
     'errorlogs':       [UserBooleanOption, "Whether to print the logs from failing tests.", True],
diff --git a/mesonbuild/interpreter.py b/mesonbuild/interpreter.py
index 55320d0..88565af 100644
--- a/mesonbuild/interpreter.py
+++ b/mesonbuild/interpreter.py
@@ -605,6 +605,31 @@ class StaticLibraryHolder(BuildTargetHolder):
 class SharedLibraryHolder(BuildTargetHolder):
     def __init__(self, target, interp):
         super().__init__(target, interp)
+        # Set to True only when called from self.func_shared_lib().
+        target.shared_library_only = False
+
+class BothLibrariesHolder(BuildTargetHolder):
+    def __init__(self, shared_holder, static_holder, interp):
+        # FIXME: This build target always represents the shared library, but
+        # that should be configurable.
+        super().__init__(shared_holder.held_object, interp)
+        self.shared_holder = shared_holder
+        self.static_holder = static_holder
+        self.methods.update({'get_shared_lib': self.get_shared_lib_method,
+                             'get_static_lib': self.get_static_lib_method,
+                             })
+
+    def __repr__(self):
+        r = '<{} {}: {}, {}: {}>'
+        h1 = self.shared_holder.held_object
+        h2 = self.static_holder.held_object
+        return r.format(self.__class__.__name__, h1.get_id(), h1.filename, h2.get_id(), h2.filename)
+
+    def get_shared_lib_method(self, args, kwargs):
+        return self.shared_holder
+
+    def get_static_lib_method(self, args, kwargs):
+        return self.static_holder
 
 class SharedModuleHolder(BuildTargetHolder):
     def __init__(self, target, interp):
@@ -1418,71 +1443,17 @@ class MesonMain(InterpreterObject):
             raise InterpreterException('Unknown cross property: %s.' % propname)
 
 
-pch_kwargs = set(['c_pch', 'cpp_pch'])
-
-lang_arg_kwargs = set([
-    'c_args',
-    'cpp_args',
-    'd_args',
-    'd_import_dirs',
-    'd_unittest',
-    'd_module_versions',
-    'fortran_args',
-    'java_args',
-    'objc_args',
-    'objcpp_args',
-    'rust_args',
-    'vala_args',
-    'cs_args',
-])
-
-vala_kwargs = set(['vala_header', 'vala_gir', 'vala_vapi'])
-rust_kwargs = set(['rust_crate_type'])
-cs_kwargs = set(['resources', 'cs_args'])
-
-buildtarget_kwargs = set([
-    'build_by_default',
-    'build_rpath',
-    'dependencies',
-    'extra_files',
-    'gui_app',
-    'link_with',
-    'link_whole',
-    'link_args',
-    'link_depends',
-    'implicit_include_directories',
-    'include_directories',
-    'install',
-    'install_rpath',
-    'install_dir',
-    'name_prefix',
-    'name_suffix',
-    'native',
-    'objects',
-    'override_options',
-    'pic',
-    'sources',
-    'vs_module_defs',
-])
-
-build_target_common_kwargs = (
-    buildtarget_kwargs |
-    lang_arg_kwargs |
-    pch_kwargs |
-    vala_kwargs |
-    rust_kwargs |
-    cs_kwargs)
-
-exe_kwargs = (build_target_common_kwargs) | {'implib', 'export_dynamic'}
-shlib_kwargs = (build_target_common_kwargs) | {'version', 'soversion'}
-shmod_kwargs = shlib_kwargs
-stlib_kwargs = shlib_kwargs
-
-jar_kwargs = exe_kwargs.copy()
-jar_kwargs.update(['main_class'])
-
-build_target_kwargs = exe_kwargs.copy()
-build_target_kwargs.update(['target_type'])
+known_library_kwargs = (
+    build.known_shlib_kwargs |
+    build.known_stlib_kwargs
+)
+
+known_build_target_kwargs = (
+    known_library_kwargs |
+    build.known_exe_kwargs |
+    build.known_jar_kwargs |
+    {'target_type'}
+)
 
 permitted_kwargs = {'add_global_arguments': {'language'},
                     'add_global_link_arguments': {'language'},
@@ -1491,12 +1462,12 @@ permitted_kwargs = {'add_global_arguments': {'language'},
                     'add_project_arguments': {'language'},
                     'add_test_setup': {'exe_wrapper', 'gdb', 'timeout_multiplier', 'env'},
                     'benchmark': {'args', 'env', 'should_fail', 'timeout', 'workdir', 'suite'},
-                    'build_target': build_target_kwargs,
+                    'build_target': known_build_target_kwargs,
                     'configure_file': {'input', 'output', 'configuration', 'command', 'install_dir', 'capture', 'install'},
                     'custom_target': {'input', 'output', 'command', 'install', 'install_dir', 'build_always', 'capture', 'depends', 'depend_files', 'depfile', 'build_by_default'},
                     'dependency': {'default_options', 'fallback', 'language', 'main', 'method', 'modules', 'optional_modules', 'native', 'required', 'static', 'version'},
                     'declare_dependency': {'include_directories', 'link_with', 'sources', 'dependencies', 'compile_args', 'link_args', 'link_whole', 'version'},
-                    'executable': exe_kwargs,
+                    'executable': build.known_exe_kwargs,
                     'find_program': {'required', 'native'},
                     'generator': {'arguments', 'output', 'depfile', 'capture', 'preserve_path_from'},
                     'include_directories': {'is_system'},
@@ -1504,12 +1475,14 @@ permitted_kwargs = {'add_global_arguments': {'language'},
                     'install_headers': {'install_dir', 'subdir'},
                     'install_man': {'install_dir'},
                     'install_subdir': {'exclude_files', 'exclude_directories', 'install_dir', 'install_mode', 'strip_directory'},
-                    'jar': jar_kwargs,
+                    'jar': build.known_jar_kwargs,
                     'project': {'version', 'meson_version', 'default_options', 'license', 'subproject_dir'},
                     'run_target': {'command', 'depends'},
-                    'shared_library': shlib_kwargs,
-                    'shared_module': shmod_kwargs,
-                    'static_library': stlib_kwargs,
+                    'shared_library': build.known_shlib_kwargs,
+                    'shared_module': build.known_shmod_kwargs,
+                    'static_library': build.known_stlib_kwargs,
+                    'both_libraries': known_library_kwargs,
+                    'library': known_library_kwargs,
                     'subdir': {'if_found'},
                     'subproject': {'version', 'default_options'},
                     'test': {'args', 'env', 'is_parallel', 'should_fail', 'timeout', 'workdir', 'suite'},
@@ -1610,6 +1583,7 @@ class Interpreter(InterpreterBase):
                            'shared_library': self.func_shared_lib,
                            'shared_module': self.func_shared_module,
                            'static_library': self.func_static_lib,
+                           'both_libraries': self.func_both_lib,
                            'test': self.func_test,
                            'vcs_tag': self.func_vcs_tag,
                            'subdir_done': self.func_subdir_done,
@@ -2539,20 +2513,24 @@ root and issuing %s.
 
     @permittedKwargs(permitted_kwargs['shared_library'])
     def func_shared_lib(self, node, args, kwargs):
-        return self.build_target(node, args, kwargs, SharedLibraryHolder)
+        holder = self.build_target(node, args, kwargs, SharedLibraryHolder)
+        holder.held_object.shared_library_only = True
+        return holder
+
+    @permittedKwargs(permitted_kwargs['both_libraries'])
+    def func_both_lib(self, node, args, kwargs):
+        return self.build_both_libraries(node, args, kwargs)
 
     @permittedKwargs(permitted_kwargs['shared_module'])
     def func_shared_module(self, node, args, kwargs):
         return self.build_target(node, args, kwargs, SharedModuleHolder)
 
+    @permittedKwargs(permitted_kwargs['library'])
     def func_library(self, node, args, kwargs):
-        if self.coredata.get_builtin_option('default_library') == 'shared':
-            return self.func_shared_lib(node, args, kwargs)
-        return self.func_static_lib(node, args, kwargs)
+        return self.build_library(node, args, kwargs)
 
     @permittedKwargs(permitted_kwargs['jar'])
     def func_jar(self, node, args, kwargs):
-        kwargs['target_type'] = 'jar'
         return self.build_target(node, args, kwargs, JarHolder)
 
     @permittedKwargs(permitted_kwargs['build_target'])
@@ -2561,15 +2539,17 @@ root and issuing %s.
             raise InterpreterException('Missing target_type keyword argument')
         target_type = kwargs.pop('target_type')
         if target_type == 'executable':
-            return self.func_executable(node, args, kwargs)
+            return self.build_target(node, args, kwargs, ExecutableHolder)
         elif target_type == 'shared_library':
-            return self.func_shared_lib(node, args, kwargs)
+            return self.build_target(node, args, kwargs, SharedLibraryHolder)
         elif target_type == 'static_library':
-            return self.func_static_lib(node, args, kwargs)
+            return self.build_target(node, args, kwargs, StaticLibraryHolder)
+        elif target_type == 'both_libraries':
+            return self.build_both_libraries(node, args, kwargs)
         elif target_type == 'library':
-            return self.func_library(node, args, kwargs)
+            return self.build_library(node, args, kwargs)
         elif target_type == 'jar':
-            return self.func_jar(node, args, kwargs)
+            return self.build_target(node, args, kwargs, JarHolder)
         else:
             raise InterpreterException('Unknown target_type.')
 
@@ -3222,6 +3202,41 @@ different subdirectory.
         if idname not in self.coredata.target_guids:
             self.coredata.target_guids[idname] = str(uuid.uuid4()).upper()
 
+    def build_both_libraries(self, node, args, kwargs):
+        shared_holder = self.build_target(node, args, kwargs, SharedLibraryHolder)
+
+        # Check if user forces non-PIC static library.
+        pic = True
+        if 'pic' in kwargs:
+            pic = kwargs['pic']
+        elif 'b_staticpic' in self.environment.coredata.base_options:
+            pic = self.environment.coredata.base_options['b_staticpic'].value
+
+        if pic:
+            # Exclude sources from args and kwargs to avoid building them twice
+            static_args = [args[0]]
+            static_kwargs = kwargs.copy()
+            static_kwargs['sources'] = []
+            static_kwargs['objects'] = shared_holder.held_object.extract_all_objects()
+        else:
+            static_args = args
+            static_kwargs = kwargs
+
+        static_holder = self.build_target(node, static_args, static_kwargs, StaticLibraryHolder)
+
+        return BothLibrariesHolder(shared_holder, static_holder, self)
+
+    def build_library(self, node, args, kwargs):
+        default_library = self.coredata.get_builtin_option('default_library')
+        if default_library == 'shared':
+            return self.build_target(node, args, kwargs, SharedLibraryHolder)
+        elif default_library == 'static':
+            return self.build_target(node, args, kwargs, StaticLibraryHolder)
+        elif default_library == 'both':
+            return self.build_both_libraries(node, args, kwargs)
+        else:
+            raise InterpreterException('Unknown default_library value: %s.', default_library)
+
     def build_target(self, node, args, kwargs, targetholder):
         if not args:
             raise InterpreterException('Target does not have a name.')
@@ -3257,7 +3272,13 @@ different subdirectory.
             mlog.debug('Unknown target type:', str(targetholder))
             raise RuntimeError('Unreachable code')
         self.kwarg_strings_to_includedirs(kwargs)
+
+        # Filter out kwargs from other target types. For example 'soversion'
+        # passed to library() when default_library == 'static'.
+        kwargs = {k: v for k, v in kwargs.items() if k in targetclass.known_kwargs}
+
         target = targetclass(name, self.subdir, self.subproject, is_cross, sources, objs, self.environment, kwargs)
+
         if is_cross:
             self.add_cross_stdlib_info(target)
         l = targetholder(target, self)
diff --git a/mesonbuild/modules/pkgconfig.py b/mesonbuild/modules/pkgconfig.py
index ef74d63..c587f84 100644
--- a/mesonbuild/modules/pkgconfig.py
+++ b/mesonbuild/modules/pkgconfig.py
@@ -105,26 +105,24 @@ class DependenciesHelper:
                 if obj.found():
                     processed_libs += obj.get_link_args()
                     processed_cflags += obj.get_compile_args()
-            elif isinstance(obj, build.SharedLibrary):
+            elif isinstance(obj, build.SharedLibrary) and obj.shared_library_only:
+                # Do not pull dependencies for shared libraries because they are
+                # only required for static linking. Adding private requires has
+                # the side effect of exposing their cflags, which is the
+                # intended behaviour of pkg-config but force Debian to add more
+                # than needed build deps.
+                # See https://bugs.freedesktop.org/show_bug.cgi?id=105572
                 processed_libs.append(obj)
                 if public:
                     if not hasattr(obj, 'generated_pc'):
                         obj.generated_pc = self.name
-            elif isinstance(obj, build.StaticLibrary):
-                # Due to a "feature" in pkgconfig, it leaks out private dependencies.
-                # Thus we will not add them to the pc file unless the target
-                # we are processing is a static library.
-                #
-                # This way (hopefully) "pkgconfig --libs --static foobar" works
-                # and "pkgconfig --cflags/--libs foobar" does not have any trace
-                # of dependencies that the build file creator has not explicitly
-                # added to the dependency list.
+            elif isinstance(obj, (build.SharedLibrary, build.StaticLibrary)):
                 processed_libs.append(obj)
+                self.add_priv_libs(obj.get_dependencies())
+                self.add_priv_libs(obj.get_external_deps())
                 if public:
                     if not hasattr(obj, 'generated_pc'):
                         obj.generated_pc = self.name
-                    self.add_priv_libs(obj.get_dependencies())
-                    self.add_priv_libs(obj.get_external_deps())
             elif isinstance(obj, str):
                 processed_libs.append(obj)
             else:
diff --git a/mesonbuild/modules/python3.py b/mesonbuild/modules/python3.py
index 9fd9f80..d2bf1dc 100644
--- a/mesonbuild/modules/python3.py
+++ b/mesonbuild/modules/python3.py
@@ -19,10 +19,7 @@ from . import ExtensionModule
 from mesonbuild.modules import ModuleReturnValue
 from . import permittedSnippetKwargs
 from ..interpreterbase import noKwargs
-from ..interpreter import shlib_kwargs
-
-mod_kwargs = set()
-mod_kwargs.update(shlib_kwargs)
+from ..build import known_shmod_kwargs
 
 
 class Python3Module(ExtensionModule):
@@ -30,7 +27,7 @@ class Python3Module(ExtensionModule):
         super().__init__()
         self.snippets.add('extension_module')
 
-    @permittedSnippetKwargs(mod_kwargs)
+    @permittedSnippetKwargs(known_shmod_kwargs)
     def extension_module(self, interpreter, state, args, kwargs):
         if 'name_prefix' in kwargs:
             raise mesonlib.MesonException('Name_prefix is set automatically, specifying it is forbidden.')
diff --git a/test cases/common/189 bothlibraries/libfile.c b/test cases/common/189 bothlibraries/libfile.c
new file mode 100644
index 0000000..085ef3b
--- /dev/null
+++ b/test cases/common/189 bothlibraries/libfile.c
@@ -0,0 +1,7 @@
+#include "mylib.h"
+
+DO_EXPORT int retval = 42;
+
+DO_EXPORT int func() {
+    return retval;
+}
diff --git a/test cases/common/189 bothlibraries/main.c b/test cases/common/189 bothlibraries/main.c
new file mode 100644
index 0000000..03a8e02
--- /dev/null
+++ b/test cases/common/189 bothlibraries/main.c
@@ -0,0 +1,8 @@
+#include "mylib.h"
+
+DO_IMPORT int func();
+DO_IMPORT int retval;
+
+int main(int argc, char **arg) {
+    return func() == retval ? 0 : 1;
+}
diff --git a/test cases/common/189 bothlibraries/meson.build b/test cases/common/189 bothlibraries/meson.build
new file mode 100644
index 0000000..3a13d62
--- /dev/null
+++ b/test cases/common/189 bothlibraries/meson.build
@@ -0,0 +1,12 @@
+project('both libraries linking test', 'c')
+
+both_libs = both_libraries('mylib', 'libfile.c')
+exe_shared = executable('prog-shared', 'main.c', link_with : both_libs.get_shared_lib())
+exe_static = executable('prog-static', 'main.c',
+                        c_args : ['-DSTATIC_COMPILATION'],
+                        link_with : both_libs.get_static_lib())
+exe_both = executable('prog-both', 'main.c', link_with : both_libs)
+
+test('runtest-shared', exe_shared)
+test('runtest-static', exe_static)
+test('runtest-both', exe_both)
diff --git a/test cases/common/189 bothlibraries/mylib.h b/test cases/common/189 bothlibraries/mylib.h
new file mode 100644
index 0000000..1038a01
--- /dev/null
+++ b/test cases/common/189 bothlibraries/mylib.h
@@ -0,0 +1,13 @@
+#pragma once
+
+#ifdef _WIN32
+  #ifdef STATIC_COMPILATION
+    #define DO_IMPORT extern
+  #else
+    #define DO_IMPORT __declspec(dllimport)
+  #endif
+  #define DO_EXPORT __declspec(dllexport)
+#else
+  #define DO_IMPORT extern
+  #define DO_EXPORT
+#endif