From eee16f8ecc977f1848b77964720790b50f3fca55 Mon Sep 17 00:00:00 2001
From: Orivej Desh <orivej@gmx.fr>
Date: Wed, 30 May 2018 16:11:41 +0000
Subject: [PATCH] flann: fix build with cmake 3.11 after #40800

---
 pkgs/development/libraries/flann/default.nix | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/flann/default.nix b/pkgs/development/libraries/flann/default.nix
index 3cc518fee50..a25f3ea04e2 100644
--- a/pkgs/development/libraries/flann/default.nix
+++ b/pkgs/development/libraries/flann/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, unzip, cmake, python }:
+{ stdenv, fetchFromGitHub, fetchpatch, unzip, cmake, python }:
 
 stdenv.mkDerivation {
   name = "flann-1.9.1";
@@ -10,6 +10,14 @@ stdenv.mkDerivation {
     sha256 = "13lg9nazj5s9a41j61vbijy04v6839i67lqd925xmxsbybf36gjc";
   };
 
+  patches = [
+    # Upstream issue: https://github.com/mariusmuja/flann/issues/369
+    (fetchpatch {
+      url = "https://raw.githubusercontent.com/buildroot/buildroot/45a39b3e2ba42b72d19bfcef30db1b8da9ead51a/package/flann/0001-src-cpp-fix-cmake-3.11-build.patch";
+      sha256 = "1gmj06cmnqvwxx649mxaivd35727wj6w7710zbcmmgmsnyfh2js4";
+    })
+  ];
+
   buildInputs = [ unzip cmake python ];
 
   meta = {