nouveau: Move bitview to a common rust util folder

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34975>

src/nouveau/compiler/meson.build

@@ -1,20 +1,5 @@
 # Copyright © 2022 Collabora, Ltd.
 # SPDX-License-Identifier: MIT
-nak_rust_args = [
-  '-Aclippy::identity_op',
-  '-Aclippy::len_zero',
-  '-Aclippy::manual_range_contains',
-  # normally this is a good one, but we use it where the "better" code is worse
-  '-Aclippy::needless_range_loop',
-  '-Aclippy::redundant_field_names',
-  '-Aclippy::upper_case_acronyms',
-  '-Aclippy::vec_box',
-  '-Aclippy::write_with_newline',
-  # warns about public function might dereference a raw pointer, but nothing is
-  # actually public here
-  '-Aclippy::not_unsafe_ptr_arg_deref',
-  '-Anon_snake_case',
-]
 
 dep_paste = dependency('paste',
   version : '>= 1.0.14',
@@ -47,25 +32,13 @@ _libacorn_rs = static_library(
   files('acorn/lib.rs'),
   gnu_symbol_visibility : 'hidden',
   rust_abi : 'rust',
-  rust_args : nak_rust_args,
+  rust_args : nouveau_rust_args,
 )
 
 idep_acorn_rs = declare_dependency(
   link_with : _libacorn_rs,
 )
 
-_libbitview_rs = static_library(
-  'bitview',
-  files('bitview/lib.rs'),
-  gnu_symbol_visibility : 'hidden',
-  rust_abi : 'rust',
-  rust_args : nak_rust_args,
-)
-
-idep_bitview_rs = declare_dependency(
-  link_with : _libbitview_rs,
-)
-
 libnak_deps = [
   idep_mesautil,
   idep_nir_headers,
@@ -121,18 +94,18 @@ _libnak_rs = static_library(
   gnu_symbol_visibility : 'hidden',
   rust_abi : 'c',
   rust_args : [
-    nak_rust_args,
+    nouveau_rust_args,
     # Otherwise, rustc trips up on -pthread
     '-Clink-arg=-Wno-unused-command-line-argument',
   ],
   dependencies : [
     dep_paste,
     dep_rustc_hash,
+    idep_bitview_rs,
     idep_compiler_rs,
     idep_nvidia_headers_rs,
   ],
   link_with : [
-    _libbitview_rs,
     _libnak_bindings_rs,
     _libnak_ir_proc_rs,
   ],

src/nouveau/meson.build

@@ -5,6 +5,7 @@ subdir('drm')
 subdir('headers')
 subdir('winsys')
 if with_nouveau_vk
+  subdir('rust')
   subdir('compiler')
 endif
 if with_tools.contains('drm-shim')

src/nouveau/nil/meson.build

@@ -38,19 +38,6 @@ _libnil_deps = [
   idep_nvidia_headers_rs,
 ]
 
-_libnil_rust_args = [
-  '-Aclippy::identity_op',
-  '-Aclippy::len_zero',
-  '-Aclippy::manual_range_contains',
-  # normally this is a good one, but we use it where the "better" code is worse
-  '-Aclippy::needless_range_loop',
-  '-Aclippy::redundant_field_names',
-  '-Aclippy::upper_case_acronyms',
-  '-Aclippy::vec_box',
-  '-Aclippy::write_with_newline',
-  '-Anon_snake_case',
-]
-
 _nil_bindings_rs = rust.bindgen(
   input: ['nil_bindings.h', _nil_format_table],
   output: 'nil_bindings.rs',
@@ -92,7 +79,7 @@ _libnil = static_library(
   files('lib.rs'),
   gnu_symbol_visibility: 'hidden',
   rust_abi: 'c',
-  rust_args: _libnil_rust_args,
+  rust_args: nouveau_rust_args,
   link_with: [_libnil_format_table, _libnil_rs_bindings],
   dependencies: _libnil_deps,
 )

src/nouveau/rust/meson.build

@@ -0,0 +1,30 @@
+# Copyright © 2025 Collabora, Ltd.
+# SPDX-License-Identifier: MIT
+
+nouveau_rust_args = [
+  '-Aclippy::identity_op',
+  '-Aclippy::len_zero',
+  '-Aclippy::manual_range_contains',
+  # normally this is a good one, but we use it where the "better" code is worse
+  '-Aclippy::needless_range_loop',
+  '-Aclippy::redundant_field_names',
+  '-Aclippy::upper_case_acronyms',
+  '-Aclippy::vec_box',
+  '-Aclippy::write_with_newline',
+  # warns about public function might dereference a raw pointer, but nothing is
+  # actually public here
+  '-Aclippy::not_unsafe_ptr_arg_deref',
+  '-Anon_snake_case',
+]
+
+_libbitview_rs = static_library(
+  'bitview',
+  files('bitview/lib.rs'),
+  gnu_symbol_visibility : 'hidden',
+  rust_abi : 'rust',
+  rust_args : nouveau_rust_args,
+)
+
+idep_bitview_rs = declare_dependency(
+  link_with : _libbitview_rs,
+)