From ff9ac65fe2253952bfa86a6ce73b0c44b7ccecb3 Mon Sep 17 00:00:00 2001
From: Patryk Obara <dreamer.tan@gmail.com>
Date: Thu, 15 Aug 2019 13:23:13 +0200
Subject: [PATCH] Use fallback aligned_alloc for older glibc++

This function was introduced in C++17, then backported to older versions
of glibc++ library, but is not available in older releases (it's missing
from Ubuntu 12.04 derived SteamRT for example).
---
 src/vk_mem_alloc.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/vk_mem_alloc.h b/src/vk_mem_alloc.h
index 623f860..325375f 100644
--- a/src/vk_mem_alloc.h
+++ b/src/vk_mem_alloc.h
@@ -3302,7 +3302,7 @@ void *aligned_alloc(size_t alignment, size_t size)
 
     return memalign(alignment, size);
 }
-#elif defined(__APPLE__) || defined(__ANDROID__)
+#elif defined(__APPLE__) || defined(__ANDROID__) || (defined(__GLIBCXX__) && !defined(_GLIBCXX_HAVE_ALIGNED_ALLOC))
 #include <cstdlib>
 void *aligned_alloc(size_t alignment, size_t size)
 {