[Buildroot] [PATCH] package/mesa3d: fix build issue with gcc < 13

* [Buildroot] [PATCH] package/mesa3d: fix build issue with gcc < 13
@ 2026-08-26 14:13 Thomas Petazzoni via buildroot
  2026-08-27 20:43 ` Julien Olivain via buildroot
  2026-09-04 12:17 ` Thomas Perale via buildroot
  0 siblings, 2 replies; 3+ messages in thread
From: Thomas Petazzoni via buildroot @ 2026-08-26 14:13 UTC (permalink / raw)
  To: buildroot; +Cc: Thomas Petazzoni, Bernd Kuhls, Joseph Kogut, Romain Naour

Since upstream commit
e42e3193137d1b21e84b499336e7a8887b8a8689 ("intel: add Jay"), a C23
construct is used in the intel driver code:

enum jay_predication : uint8_t

This causes a build issue with GCC < 13:

In file included from ../src/intel/compiler/jay/jay_builder.h:12,
                 from ../src/intel/compiler/jay/jay_from_nir.c:23:
../src/intel/compiler/jay/jay_ir.h:582:22: error: expected identifier or ‘(’ before ‘:’ token
  582 | enum jay_predication : uint8_t {
      |                      ^
../src/intel/compiler/jay/jay_ir.h:637:25: error: field ‘predication’ has incomplete type
  637 |    enum jay_predication predication;
      |                         ^~~~~~~~~~~

We fix that by integrating a patch already available in
OpenEmbedded. It changes the code to not use the C23 construct.

This build issue was encountered on host-mesa3d while building an
allyespackageconfig configuration inside our standard Docker
container.

Buildroot commit
c073c976179021c84e0c84f6f23e938b43783e75 ("package/{mesa3d,
mesa3d-headers}: bump version to 26.1.0") that switched to mesa3d
26.1.0, which contains the problematic commit. Therefore 2026.05 is
affected, but not earlier Buildroot versions.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
---
 ...er-jay-jay_ir.h-do-not-used-typed-en.patch | 41 +++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 package/mesa3d/0005-src-intel-compiler-jay-jay_ir.h-do-not-used-typed-en.patch

diff --git a/package/mesa3d/0005-src-intel-compiler-jay-jay_ir.h-do-not-used-typed-en.patch b/package/mesa3d/0005-src-intel-compiler-jay-jay_ir.h-do-not-used-typed-en.patch
new file mode 100644
index 0000000000..af066287e2
--- /dev/null
+++ b/package/mesa3d/0005-src-intel-compiler-jay-jay_ir.h-do-not-used-typed-en.patch
@@ -0,0 +1,41 @@
+From 345ccf93e9d00dfd0f71085832a7df0170b74f74 Mon Sep 17 00:00:00 2001
+From: Alexander Kanavin <alex@linutronix.de>
+Date: Sun, 14 Jun 2026 17:42:19 +0200
+Subject: [PATCH] src/intel/compiler/jay/jay_ir.h: do not used typed enum
+
+This is a C23 feature and not supported by gcc < 13, which
+many host distros still have (e.g. Debian 12).
+
+Upstream-Status: Inappropriate [yocto host distro requirements]
+Signed-off-by: Alexander Kanavin <alex@linutronix.de>
+Upstream: N/A, code completely changed upstream
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
+---
+ src/intel/compiler/jay/jay_ir.h | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/intel/compiler/jay/jay_ir.h b/src/intel/compiler/jay/jay_ir.h
+index 8307044ef8a..abf175a71bf 100644
+--- a/src/intel/compiler/jay/jay_ir.h
++++ b/src/intel/compiler/jay/jay_ir.h
+@@ -579,7 +579,7 @@ jay_type_is_any_float(enum jay_type t)
+    return jay_base_type(t) == JAY_TYPE_F || jay_base_type(t) == JAY_TYPE_BF;
+ }
+ 
+-enum jay_predication : uint8_t {
++enum jay_predication {
+    /** No predication. */
+    JAY_NOT_PREDICATED = 0,
+ 
+@@ -634,7 +634,7 @@ typedef struct jay_inst {
+    bool decrement_dep:1;
+    unsigned padding  :12;
+ 
+-   enum jay_predication predication;
++   uint8_t predication;
+    enum jay_conditional_mod conditional_mod;
+ 
+    jay_def cond_flag; /**< conditional flag */
+-- 
+2.55.0
+
-- 
2.55.0

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