nir: Only build nir headers for mediafoundation/d3d12-no-graphics paired build

Reviewed-by: <pohhsu@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34845>

src/compiler/nir/meson.build

@@ -76,7 +76,31 @@ nir_intrinsics_c = custom_target(
   depend_files : files('nir_intrinsics.py'),
 )
 
-files_libnir = files(
+with_nir_headers_only = (
+  gallium_drivers == ['d3d12'] and
+  get_option('gallium-d3d12-graphics').disabled() and
+  not [
+    with_gallium_vdpau,
+    with_gallium_va,
+    with_any_vk,
+    with_gallium_xa,
+    with_gallium_st_nine,
+    with_gallium_st_d3d10umd,
+    with_gallium_rusticl,
+    with_microsoft_clc,
+    with_spirv_to_dxil,
+    with_intel_clc,
+    with_clc,
+    with_drivers_clc,
+    get_option('intel-elk'),
+    with_tools.length() != 0,
+  ].contains(true))
+
+files_libnir = []
+if with_nir_headers_only
+  files_libnir += files('nir_stub.c')
+else
+  files_libnir += files(
   'nir.c',
   'nir.h',
   'nir_builder.c',
@@ -309,7 +333,8 @@ files_libnir = files(
   'nir_worklist.h',
   'nir_xfb_info.h',
   'nir_lower_atomics.c'
-)
+  )
+endif
 
 # When a file is too large, -Wmisleading-indentation will give a note about
 # not being able to process it, however that is not suppressable by a #pragma
@@ -321,11 +346,17 @@ if cc.get_id() == 'gcc'
   no_misleading_indentation += cc.get_supported_arguments('-Wno-misleading-indentation')
 endif
 
+custom_targets_libnir = []
+if not with_nir_headers_only
+  custom_targets_libnir += [nir_opt_algebraic_c, nir_opcodes_c,
+    nir_opcodes_h, nir_constant_expressions_c, nir_builder_opcodes_h,
+    nir_intrinsics_c, nir_intrinsics_h, nir_intrinsics_indices_h
+]
+endif
+
 _libnir = static_library(
   'nir',
-  [files_libnir, nir_opt_algebraic_c, nir_opcodes_c,
-   nir_opcodes_h, nir_constant_expressions_c, nir_builder_opcodes_h,
-   nir_intrinsics_c, nir_intrinsics_h, nir_intrinsics_indices_h],
+  [files_libnir, custom_targets_libnir],
   include_directories : [inc_include, inc_src],
   c_args : [c_msvc_compat_args, no_override_init_args, no_misleading_indentation],
   gnu_symbol_visibility : 'hidden',

src/compiler/nir/nir_stub.c

@@ -0,0 +1,30 @@
+/*
+ * Copyright © Microsoft Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "nir.h"
+#include "stdio.h"
+
+void
+nir_print_shader(nir_shader *shader, FILE *fp)
+{
+}