meson: make dep_lua a disabler

There are cases where the freedreno `crashdec` program will not be
built, but will still be used. By making dep_lua a disabler, we move
closer to being able to have those tests automatically disabled when
crashdec isn't built.

Acked-by: Rob Clark <rob.clark@oss.qualcomm.com>
Acked-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38579>

meson.build

@@ -1918,6 +1918,7 @@ dep_lua = dependency('lua54', 'lua5.4', 'lua-5.4',
                      'lua53', 'lua5.3', 'lua-5.3',
                      'lua', required: false,
                      allow_fallback: with_tools.contains('freedreno'),
+                     disabler : true,
                      version: '>=5.3')
 
 # Be explicit about only using this lib on Windows, to avoid picking

src/freedreno/decode/meson.build

@@ -162,7 +162,7 @@ else
   warning('libarchive not found, not building replay or rddecompiler')
 endif
 
-if dep_lua.found() and dep_libarchive.found()
+if dep_libarchive.found()
   cffdump = executable(
     'cffdump',
     [

src/intel/executor/meson.build

@@ -1,10 +1,6 @@
 # Copyright © 2024 Intel Corporation
 # SPDX-License-Identifier: MIT
 
-if not dep_lua.found()
-  subdir_done()
-endif
-
 executor_flags = [
   no_override_init_args,
   sse2_args,
@@ -32,6 +28,7 @@ foreach v: ['90', '110', '120', '125', '200', '300']
       idep_genxml,
       idep_intel_dev,
     ],
+    build_by_default : false,
   )
 endforeach