From 87a8d7962ea13f11e591462ec5757e9e1747dc07 Mon Sep 17 00:00:00 2001
From: ROUVREAU Vincent <vincent.rouvreau@inria.fr>
Date: Tue, 20 Aug 2019 17:05:13 +0200
Subject: Fix issue #10 and modify main and installation documentations
 accordingly

---
 src/Bottleneck_distance/include/gudhi/Bottleneck.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'src/Bottleneck_distance')

diff --git a/src/Bottleneck_distance/include/gudhi/Bottleneck.h b/src/Bottleneck_distance/include/gudhi/Bottleneck.h
index d31c82ee..82ba9f68 100644
--- a/src/Bottleneck_distance/include/gudhi/Bottleneck.h
+++ b/src/Bottleneck_distance/include/gudhi/Bottleneck.h
@@ -5,8 +5,9 @@
  *    Copyright (C) 2015 Inria
  *
  *    Modification(s):
- *      - YYYY/MM Author: Description of the modification
  *      - 2019/06 Vincent Rouvreau : Fix doxygen warning.
+ *      - 2019/08 Vincent Rouvreau: Fix issue #10 for CGAL
+ *      - YYYY/MM Author: Description of the modification
  */
 
 #ifndef BOTTLENECK_H_
@@ -14,6 +15,8 @@
 
 #include <gudhi/Graph_matching.h>
 
+#include <CGAL/version.h>  // for CGAL_VERSION_NR
+
 #include <vector>
 #include <algorithm>  // for max
 #include <limits>  // for numeric_limits
@@ -21,6 +24,11 @@
 #include <cmath>
 #include <cfloat>  // FLT_EVAL_METHOD
 
+// Make compilation fail - required for external projects - https://github.com/GUDHI/gudhi-devel/issues/10
+#if CGAL_VERSION_NR < 1041101000
+# error Alpha_complex_3d is only available for CGAL >= 4.11
+#endif
+
 namespace Gudhi {
 
 namespace persistence_diagram {
-- 
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