vk_mem_alloc.h: Patch for C++14 compilation on Linux, BSDs

lib/ivis_opengl/3rdparty/vk_mem_alloc.h

@@ -2765,7 +2765,11 @@ static void* vma_aligned_alloc(size_t alignment, size_t size)
 
     return memalign(alignment, size);
 }
-#elif defined(__APPLE__) || defined(__ANDROID__) || (defined(__linux__) && defined(__GLIBCXX__) && !defined(_GLIBCXX_HAVE_ALIGNED_ALLOC))
+#elif defined(__APPLE__) || defined(__ANDROID__) || \
+	 ((defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) || defined(__OpenBSD__) || defined(__NetBSD__)) \
+		&& ((__cplusplus >= 201402L && __cplusplus < 201703L) || (defined(__GLIBCXX__) && !defined(_GLIBCXX_HAVE_ALIGNED_ALLOC))))
+// WZ Patch: Add C++14, BSDs to the linux check above (until we can require C++17)
+// Reference: https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator/issues/332
 #include <cstdlib>
 
 #if defined(__APPLE__)
@@ -2813,6 +2817,7 @@ static void* vma_aligned_alloc(size_t alignment, size_t size)
 #else
 static void* vma_aligned_alloc(size_t alignment, size_t size)
 {
+    #error No available implementation for vma_aligned_alloc
     VMA_ASSERT(0 && "Could not implement aligned_alloc automatically. Please enable C++17 or later in your compiler or provide custom implementation of macro VMA_SYSTEM_ALIGNED_MALLOC (and VMA_SYSTEM_ALIGNED_FREE if needed) using the API of your system.");
     return VMA_NULL;
 }