1 files changed, 114 insertions, 0 deletions
diff --git a/mesonbuild/compilers/objc.py b/mesonbuild/compilers/objc.py
new file mode 100644
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+++ b/mesonbuild/compilers/objc.py
@@ -0,0 +1,114 @@
+# Copyright 2012-2017 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from __future__ import annotations
+
+import typing as T
+
+from .. import coredata
+from ..mesonlib import OptionKey
+
+from .compilers import Compiler
+from .mixins.clike import CLikeCompiler
+from .mixins.gnu import GnuCompiler, gnu_common_warning_args, gnu_objc_warning_args
+from .mixins.clang import ClangCompiler
+
+if T.TYPE_CHECKING:
+    from ..programs import ExternalProgram
+    from ..envconfig import MachineInfo
+    from ..environment import Environment
+    from ..linkers import DynamicLinker
+    from ..mesonlib import MachineChoice
+
+
+class ObjCCompiler(CLikeCompiler, Compiler):
+
+    language = 'objc'
+
+    def __init__(self, ccache: T.List[str], exelist: T.List[str], version: str, for_machine: MachineChoice,
+                 is_cross: bool, info: 'MachineInfo',
+                 exe_wrap: T.Optional['ExternalProgram'],
+                 linker: T.Optional['DynamicLinker'] = None,
+                 full_version: T.Optional[str] = None):
+        Compiler.__init__(self, ccache, exelist, version, for_machine, info,
+                          is_cross=is_cross, full_version=full_version,
+                          linker=linker)
+        CLikeCompiler.__init__(self, exe_wrap)
+
+    @staticmethod
+    def get_display_language() -> str:
+        return 'Objective-C'
+
+    def sanity_check(self, work_dir: str, environment: 'Environment') -> None:
+        code = '#import<stddef.h>\nint main(void) { return 0; }\n'
+        return self._sanity_check_impl(work_dir, environment, 'sanitycheckobjc.m', code)
+
+
+class GnuObjCCompiler(GnuCompiler, ObjCCompiler):
+    def __init__(self, ccache: T.List[str], exelist: T.List[str], version: str, for_machine: MachineChoice,
+                 is_cross: bool, info: 'MachineInfo',
+                 exe_wrapper: T.Optional['ExternalProgram'] = None,
+                 defines: T.Optional[T.Dict[str, str]] = None,
+                 linker: T.Optional['DynamicLinker'] = None,
+                 full_version: T.Optional[str] = None):
+        ObjCCompiler.__init__(self, ccache, exelist, version, for_machine, is_cross,
+                              info, exe_wrapper, linker=linker, full_version=full_version)
+        GnuCompiler.__init__(self, defines)
+        default_warn_args = ['-Wall', '-Winvalid-pch']
+        self.warn_args = {'0': [],
+                          '1': default_warn_args,
+                          '2': default_warn_args + ['-Wextra'],
+                          '3': default_warn_args + ['-Wextra', '-Wpedantic'],
+                          'everything': (default_warn_args + ['-Wextra', '-Wpedantic'] +
+                                         self.supported_warn_args(gnu_common_warning_args) +
+                                         self.supported_warn_args(gnu_objc_warning_args))}
+
+
+class ClangObjCCompiler(ClangCompiler, ObjCCompiler):
+    def __init__(self, ccache: T.List[str], exelist: T.List[str], version: str, for_machine: MachineChoice,
+                 is_cross: bool, info: 'MachineInfo',
+                 exe_wrapper: T.Optional['ExternalProgram'] = None,
+                 defines: T.Optional[T.Dict[str, str]] = None,
+                 linker: T.Optional['DynamicLinker'] = None,
+                 full_version: T.Optional[str] = None):
+        ObjCCompiler.__init__(self, ccache, exelist, version, for_machine, is_cross,
+                              info, exe_wrapper, linker=linker, full_version=full_version)
+        ClangCompiler.__init__(self, defines)
+        default_warn_args = ['-Wall', '-Winvalid-pch']
+        self.warn_args = {'0': [],
+                          '1': default_warn_args,
+                          '2': default_warn_args + ['-Wextra'],
+                          '3': default_warn_args + ['-Wextra', '-Wpedantic'],
+                          'everything': ['-Weverything']}
+
+    def get_options(self) -> 'coredata.MutableKeyedOptionDictType':
+        opts = super().get_options()
+        opts.update({
+            OptionKey('std', machine=self.for_machine, lang='c'): coredata.UserComboOption(
+                'C language standard to use',
+                ['none', 'c89', 'c99', 'c11', 'c17', 'gnu89', 'gnu99', 'gnu11', 'gnu17'],
+                'none',
+            )
+        })
+        return opts
+
+    def get_option_compile_args(self, options: 'coredata.KeyedOptionDictType') -> T.List[str]:
+        args = []
+        std = options[OptionKey('std', machine=self.for_machine, lang='c')]
+        if std.value != 'none':
+            args.append('-std=' + std.value)
+        return args
+
+class AppleClangObjCCompiler(ClangObjCCompiler):
+
+    """Handle the differences between Apple's clang and vanilla clang."""