From ecca5ef6c380cf837ce3f261631f19dd3f18f51a Mon Sep 17 00:00:00 2001
From: Eric Engestrom <eric@engestrom.ch>
Date: Sat, 15 Feb 2020 10:53:26 +0000
Subject: [PATCH] meson: explicitly disallow unsupported build directory layout

Closes: https://gitlab.freedesktop.org/mesa/mesa/issues/2512
Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3832>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3832>
---
 meson.build | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/meson.build b/meson.build
index fb037d760ca..73ba1b24253 100644
--- a/meson.build
+++ b/meson.build
@@ -34,6 +34,10 @@ cpp = meson.get_compiler('cpp')
 
 null_dep = dependency('', required : false)
 
+if get_option('layout') != 'mirror'
+  error('`mirror` is the only build directory layout supported')
+endif
+
 # Arguments for the preprocessor, put these in a separate array from the C and
 # C++ (cpp in meson terminology) arguments since they need to be added to the
 # default arguments for both C and C++.
-- 
2.30.2