From 2493b6e659e74a8c64864ae14fa44a68ecc2dd4d Mon Sep 17 00:00:00 2001
From: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Date: Wed, 30 Oct 2024 03:14:42 +0300
Subject: [PATCH] meson: Raise error for setting 'neon' when unsupported

We can set -Dneon=yes on x86, which will fail during build because the
x86 compiler doesn't understand the resulting `-mfpu=neon` flag. Make the
'neon' build option cause an error in the setup stage if we didn't
detect hardware support for NEON.

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
---
 meson.build | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/meson.build b/meson.build
index 5d2fb8a..073c1ed 100644
--- a/meson.build
+++ b/meson.build
@@ -175,6 +175,9 @@ if neon_opt == 'auto'
     neon_opt = 'no'
   endif
 endif
+if neon_opt != 'no' and not have_neon
+  error('Compiler or architecture does not support NEON')
+endif
 if neon_opt == 'runtime'
   warning('webrtc cannot check NEON support at runtime, will build without NEON')
   have_neon = false