From e8cfcc7017f9002a229996232fdb2d03a41d7ea7 Mon Sep 17 00:00:00 2001
From: ROUVREAU Vincent <vincent.rouvreau@inria.fr>
Date: Fri, 21 Aug 2020 15:40:17 +0200
Subject: Fix compilation issues when cgal but no eigen

---
 src/Collapse/example/CMakeLists.txt | 41 +++++++++++++++++++++----------------
 1 file changed, 23 insertions(+), 18 deletions(-)

(limited to 'src/Collapse/example/CMakeLists.txt')

diff --git a/src/Collapse/example/CMakeLists.txt b/src/Collapse/example/CMakeLists.txt
index ba0e75e3..4456a844 100644
--- a/src/Collapse/example/CMakeLists.txt
+++ b/src/Collapse/example/CMakeLists.txt
@@ -1,23 +1,28 @@
 project(Edge_collapse_examples)
 
-# Point cloud
-add_executable ( Edge_collapse_example_basic edge_collapse_basic_example.cpp )
 
-if (TBB_FOUND)
-  target_link_libraries(Edge_collapse_example_basic ${TBB_LIBRARIES})
-endif()
+if (NOT EIGEN3_VERSION VERSION_LESS 3.1.0)
 
-add_test(NAME Edge_collapse_example_basic COMMAND $<TARGET_FILE:Edge_collapse_example_basic>)
+  # Point cloud
+  add_executable ( Edge_collapse_example_basic edge_collapse_basic_example.cpp )
+  
+  if (TBB_FOUND)
+    target_link_libraries(Edge_collapse_example_basic ${TBB_LIBRARIES})
+  endif()
+  
+  add_test(NAME Edge_collapse_example_basic COMMAND $<TARGET_FILE:Edge_collapse_example_basic>)
+  
+  # Point cloud
+  add_executable ( Edge_collapse_conserve_persistence edge_collapse_conserve_persistence.cpp )
+  
+  if (TBB_FOUND)
+    target_link_libraries(Edge_collapse_conserve_persistence ${TBB_LIBRARIES})
+  endif()
+  
+  add_test(NAME Edge_collapse_conserve_persistence_1 COMMAND $<TARGET_FILE:Edge_collapse_conserve_persistence>
+           "${CMAKE_SOURCE_DIR}/data/points/tore3D_300.off" "0.2")
+  
+  add_test(NAME Edge_collapse_conserve_persistence_2 COMMAND $<TARGET_FILE:Edge_collapse_conserve_persistence>
+           "${CMAKE_SOURCE_DIR}/data/points/tore3D_300.off" "1.8")
 
-# Point cloud
-add_executable ( Edge_collapse_conserve_persistence edge_collapse_conserve_persistence.cpp )
-
-if (TBB_FOUND)
-  target_link_libraries(Edge_collapse_conserve_persistence ${TBB_LIBRARIES})
-endif()
-
-add_test(NAME Edge_collapse_conserve_persistence_1 COMMAND $<TARGET_FILE:Edge_collapse_conserve_persistence>
-         "${CMAKE_SOURCE_DIR}/data/points/tore3D_300.off" "0.2")
-
-add_test(NAME Edge_collapse_conserve_persistence_2 COMMAND $<TARGET_FILE:Edge_collapse_conserve_persistence>
-         "${CMAKE_SOURCE_DIR}/data/points/tore3D_300.off" "1.8")
+endif()
\ No newline at end of file
-- 
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