Revert "rust: apply global, project, and environment C args to bindgen"

This reverts commit 36210f6.

Fixes mesonbuild#12326

Author: nirbheek

mesonbuild/modules/rust.py

@@ -232,12 +232,6 @@ def bindgen(self, state: ModuleState, args: T.List, kwargs: FuncBindgen) -> Modu
                 elif isinstance(s, CustomTarget):
                     depends.append(s)
 
-        clang_args.extend(state.global_args.get('c', []))
-        clang_args.extend(state.project_args.get('c', []))
-        cargs = state.get_option('args', state.subproject, lang='c')
-        assert isinstance(cargs, list), 'for mypy'
-        clang_args.extend(cargs)
-
         if self._bindgen_bin is None:
             self._bindgen_bin = state.find_program('bindgen')
 

test cases/rust/12 bindgen/meson.build

@@ -8,9 +8,6 @@ if not prog_bindgen.found()
   error('MESON_SKIP_TEST bindgen not found')
 endif
 
-add_project_arguments('-DPROJECT_ARG', language : 'c')
-add_global_arguments('-DGLOBAL_ARG', language : 'c')
-
 # This seems to happen on windows when libclang.dll is not in path or is not
 # valid. We must try to process a header file for this to work.
 #
@@ -84,18 +81,3 @@ test('generated header', rust_bin2)
 
 subdir('sub')
 subdir('dependencies')
-
-gp = rust.bindgen(
-  input : 'src/global-project.h',
-  output : 'global-project.rs',
-)
-
-gp_lib = static_library('gp_lib', 'src/global.c')
-
-gp_exe = executable(
-  'gp_exe',
-  structured_sources(['src/global.rs', gp]),
-  link_with : gp_lib,
-)
-
-test('global and project arguments', gp_exe)

test cases/rust/12 bindgen/src/global-project.h

@@ -1,10 +1,7 @@
 {
-  "env": {
-    "CFLAGS": "-DCMD_ARG"
-  },
   "stdout": [
     {
-      "line": "test cases/rust/12 bindgen/meson.build:30: WARNING: Project targets '>= 0.63' but uses feature introduced in '1.0.0': \"rust.bindgen\" keyword argument \"include_directories\" of type array[str]."
+      "line": "test cases/rust/12 bindgen/meson.build:27: WARNING: Project targets '>= 0.63' but uses feature introduced in '1.0.0': \"rust.bindgen\" keyword argument \"include_directories\" of type array[str]."
     }
   ]
 }