From fdcddfa2c842420e2d174857175377ca79542b39 Mon Sep 17 00:00:00 2001
From: Gaoyang Zhang <gy@blurgy.xyz>
Date: Tue, 20 Dec 2022 16:45:49 +0800
Subject: [PATCH] add missing <memory> header to allow building with GCC12
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Some C++ Standard Library headers have been changed to no longer include
other headers that were being used internally by the library since
GCC12[^1].  As a result, building torch-points-kernels with GCC12 fails
with message:

      cpu/src/neighbors.cpp:317:10: error: ‘unique_ptr’ is not a member of ‘std’
        317 |     std::unique_ptr<my_kd_tree_t> index(new my_kd_tree_t(3, pcd, tree_params));
            |          ^~~~~~~~~~
      cpu/src/neighbors.cpp:317:10: note: ‘std::unique_ptr’ is defined in header ‘<memory>’; did you forget to ‘#include <memory>’?

This pr adds the missing `<memory>` header to `cpu/src/neighbors.cpp` to
allow building with GCC12.

[^1]: <https://gcc.gnu.org/gcc-12/porting_to.html#header-dep-changes>

Signed-off-by: Gaoyang Zhang <gy@blurgy.xyz>
---
 cpu/src/neighbors.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cpu/src/neighbors.cpp b/cpu/src/neighbors.cpp
index 3a7556c..77578d7 100644
--- a/cpu/src/neighbors.cpp
+++ b/cpu/src/neighbors.cpp
@@ -3,6 +3,7 @@
 
 #include "neighbors.h"
 #include <chrono>
+#include <memory>
 #include <random>
 
 template <typename scalar_t>