nouveau: require cbindgen >= 0.25

So we can use the --depfile option, and not have to worry about new
files. Since it's Rust, the expectation is that you're going to have up
to date dependencies anyway.

Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28754>

src/nouveau/nil/meson.build

@@ -12,7 +12,7 @@ if rc.version().version_compare('< 1.73.0')
   error('nil_rs requires Rust 1.73.0')
 endif
 
-prog_cbindgen = find_program('cbindgen', required : false, native : true)
+prog_cbindgen = find_program('cbindgen', required : false, native : true, version : '>= 0.25')
 
 dep_paste = dependency('paste',
   version : '>= 1.0.14',
@@ -38,16 +38,6 @@ _libnil_format_table = static_library(
   gnu_symbol_visibility: 'hidden',
 )
 
-# Thanks to cbindgen, this does need to include everything
-_libnil_files = files(
-  'lib.rs', # lib.rs has to come first
-  'extent.rs',
-  'format.rs',
-  'image.rs',
-  'tic.rs',
-  'tiling.rs',
-)
-
 _libnil_deps = [
   dep_paste,
   idep_bitview_rs,
@@ -113,12 +103,14 @@ _libnil = static_library(
 
 _nil_h = custom_target(
   'nil_h',
-  input : [files('cbindgen.toml'), _libnil_files],
+  input : [files('cbindgen.toml'), 'lib.rs'],
   output : ['nil.h'],
   command : [
     prog_cbindgen, '-q', '--config', '@INPUT0@', '--lang', 'c',
-    '--output', '@OUTPUT0@', '--', '@INPUT1@'
+    '--output', '@OUTPUT0@', '--depfile', '@DEPFILE@',
+    '--', '@INPUT1@',
   ],
+  depfile : 'nil.h.d',
 )
 
 idep_nil = declare_dependency(