From 5725835fc3b4acf7de0a7de5b8775a67d150f63e Mon Sep 17 00:00:00 2001
From: Laurent Rineau <laurent.rineau@cgal.org>
Date: Fri, 9 Sep 2016 17:38:42 +0200
Subject: [PATCH] Fix a bug

Do not add non-existent directories to `CGAL_INCLUDE_DIRS`.

CMake-3.5.2 complains about that in header-only.
---
 Installation/CMakeLists.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Installation/CMakeLists.txt b/Installation/CMakeLists.txt
index 0f55ee1a1b3..eee53c63bc9 100644
--- a/Installation/CMakeLists.txt
+++ b/Installation/CMakeLists.txt
@@ -794,7 +794,9 @@ set(CGAL_LIBRARIES_DIR ${CMAKE_BINARY_DIR}/lib)
 set(CGAL_INCLUDE_DIRS ${CMAKE_BINARY_DIR}/include)
 
 foreach (package ${CGAL_CONFIGURED_PACKAGES})
-  set(CGAL_INCLUDE_DIRS ${CGAL_INCLUDE_DIRS} ${package}/include)
+  if(EXISTS ${package}/include)
+    set(CGAL_INCLUDE_DIRS ${CGAL_INCLUDE_DIRS} ${package}/include)
+  endif()
 endforeach()
 
 include_directories (${CGAL_INCLUDE_DIRS})