mesa: Fix build on ARM systems without Neon

See [1]

[1] https://github.com/YoeDistro/yoe-distro/issues/626

(From OE-Core rev: 48c898ae4e885d9f3af894d77946e5eb3a498112)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 50 insertions, 0 deletions

diff --git a/meta/recipes-graphics/mesa/files/0001-util-format-Check-for-NEON-before-using-it.patch b/meta/recipes-graphics/mesa/files/0001-util-format-Check-for-NEON-before-using-it.patch
new file mode 100644
index 0000000000..80b9af08e8
--- /dev/null
+++ b/meta/recipes-graphics/mesa/files/0001-util-format-Check-for-NEON-before-using-it.patch
@@ -0,0 +1,49 @@
+From 4febda271c6bb0dc69ebf573446c6922a1ec35fb Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Thu, 2 Dec 2021 19:57:42 -0800
+Subject: [PATCH] util/format: Check for NEON before using it
+
+This fixes build on rpi0-w and any other machine which does not have
+neon unit and is not used as FPU unit
+
+Fixes errors e.g.
+
+In file included from ../mesa-21.3.0/src/util/format/u_format_unpack_neon.c:35:
+/mnt/b/yoe/master/build/tmp/work/arm1176jzfshf-vfp-yoe-linux-gnueabi/mesa/2_21.3.0-r0/recipe-sysroot-native/usr/lib/clang/13.0.1/include/arm_neon.h:32:2: error: "NEON support not enabled"
+
+Upstream-Status: Submitted [https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14032]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ src/util/format/u_format.c             | 2 +-
+ src/util/format/u_format_unpack_neon.c | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/util/format/u_format.c b/src/util/format/u_format.c
+index 36c5e52008e..f0a00971691 100644
+--- a/src/util/format/u_format.c
++++ b/src/util/format/u_format.c
+@@ -1138,7 +1138,7 @@ static void
+ util_format_unpack_table_init(void)
+ {
+    for (enum pipe_format format = PIPE_FORMAT_NONE; format < PIPE_FORMAT_COUNT; format++) {
+-#if (defined(PIPE_ARCH_AARCH64) || defined(PIPE_ARCH_ARM)) && !defined(NO_FORMAT_ASM) && !defined(__SOFTFP__)
++#if (defined(PIPE_ARCH_AARCH64) || (defined(__ARM_NEON) && defined(PIPE_ARCH_ARM))) && !defined(NO_FORMAT_ASM)
+       const struct util_format_unpack_description *unpack = util_format_unpack_description_neon(format);
+       if (unpack) {
+          util_format_unpack_table[format] = unpack;
+diff --git a/src/util/format/u_format_unpack_neon.c b/src/util/format/u_format_unpack_neon.c
+index a4a5cb1f723..1e4f794a295 100644
+--- a/src/util/format/u_format_unpack_neon.c
++++ b/src/util/format/u_format_unpack_neon.c
+@@ -23,7 +23,7 @@
+ 
+ #include <u_format.h>
+ 
+-#if (defined(PIPE_ARCH_AARCH64) || defined(PIPE_ARCH_ARM)) && !defined(NO_FORMAT_ASM) && !defined(__SOFTFP__)
++#if (defined(PIPE_ARCH_AARCH64) || (defined(__ARM_NEON) && defined(PIPE_ARCH_ARM))) && !defined(NO_FORMAT_ASM)
+ 
+ /* armhf builds default to vfp, not neon, and refuses to compile neon intrinsics
+  * unless you tell it "no really".
+-- 
+2.34.1
+
diff --git a/meta/recipes-graphics/mesa/mesa.inc b/meta/recipes-graphics/mesa/mesa.inc
index ed60d98250..30b9e93f63 100644
--- a/meta/recipes-graphics/mesa/mesa.inc
+++ b/meta/recipes-graphics/mesa/mesa.inc
@@ -19,6 +19,7 @@ SRC_URI = "https://mesa.freedesktop.org/archive/mesa-${PV}.tar.xz \
            file://0002-meson.build-make-TLS-ELF-optional.patch \
            file://0001-meson-misdetects-64bit-atomics-on-mips-clang.patch \
            file://0001-futex.h-Define-__NR_futex-if-it-does-not-exist.patch \
+           file://0001-util-format-Check-for-NEON-before-using-it.patch \
            "
 
 SRC_URI[sha256sum] = "a2753c09deef0ba14d35ae8a2ceff3fe5cd13698928c7bb62c2ec8736eb09ce1"