From 03b68a5206201bf5bbffb7e4f6a6718907f23b2a Mon Sep 17 00:00:00 2001
From: vrouvrea <vrouvrea@636b058d-ea47-450e-bf9e-a15bfbe3eedb>
Date: Mon, 9 Nov 2015 09:18:55 +0000
Subject: Modification for Porquerolles Workshop Bar_code_persistence and
 alpha_complex_persistence

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/alphashapes@893 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 63d2d21d5ff7c9a94a67eafc326bf8a561bf8166
---
 src/Persistent_cohomology/example/CMakeLists.txt | 44 ++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

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

diff --git a/src/Persistent_cohomology/example/CMakeLists.txt b/src/Persistent_cohomology/example/CMakeLists.txt
index ea69352e..74c2e778 100644
--- a/src/Persistent_cohomology/example/CMakeLists.txt
+++ b/src/Persistent_cohomology/example/CMakeLists.txt
@@ -39,6 +39,50 @@ if(GMPXX_FOUND AND GMP_FOUND)
      target_link_libraries(alpha_shapes_persistence ${Boost_SYSTEM_LIBRARY} ${GMPXX_LIBRARIES} ${GMP_LIBRARIES} ${CGAL_LIBRARY})
      add_test(alpha_shapes_persistence_2_0_5 ${CMAKE_CURRENT_BINARY_DIR}/alpha_shapes_persistence ${CMAKE_SOURCE_DIR}/data/points/bunny_5000 2 0.5)
      #add_test(alpha_shapes_persistence_3_3_100 ${CMAKE_CURRENT_BINARY_DIR}/alpha_shapes_persistence ${CMAKE_SOURCE_DIR}/data/points/bunny_5000.st -p 3 -m 100)
+
+
+
+
+  if (NOT CGAL_VERSION VERSION_LESS 4.7.0)
+    message(STATUS "CGAL version: ${CGAL_VERSION}.")
+
+    include( ${CGAL_USE_FILE} )
+     # In CMakeLists.txt, when include(${CGAL_USE_FILE}), CXX_FLAGS are overwritten.
+    # cf. http://doc.cgal.org/latest/Manual/installation.html#title40
+    # A workaround is to add "-std=c++11" again.
+    # A fix would be to use https://cmake.org/cmake/help/v3.1/prop_gbl/CMAKE_CXX_KNOWN_FEATURES.html 
+    # or even better https://cmake.org/cmake/help/v3.1/variable/CMAKE_CXX_STANDARD.html
+    # but it implies to use cmake version 3.1 at least.
+    if(NOT MSVC)
+      include(CheckCXXCompilerFlag)
+      CHECK_CXX_COMPILER_FLAG(-std=c++11 COMPILER_SUPPORTS_CXX11)
+      if(COMPILER_SUPPORTS_CXX11)
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
+      endif()
+    endif()
+    # - End of workaround
+
+    find_package(Eigen3 3.1.0)
+    if (EIGEN3_FOUND)
+      message(STATUS "Eigen3 version: ${EIGEN3_VERSION}.")
+      include( ${EIGEN3_USE_FILE} )
+      if (CMAKE_BUILD_TYPE MATCHES Debug)
+        # For programs to be more verbose
+        add_definitions(-DDEBUG_TRACES)
+      endif()
+      
+      add_executable (alphacomplexpersistence alpha_complex_persistence.cpp)
+      target_link_libraries(alphacomplexpersistence  ${Boost_SYSTEM_LIBRARY} ${CGAL_LIBRARY})
+
+    else()
+      message(WARNING "Eigen3 not found. Version 3.1.0 is required for Alpha shapes feature.")
+    endif()
+  else()
+    message(WARNING "CGAL version: ${CGAL_VERSION} is too old to compile Alpha shapes feature. Version 4.6.0 is required.")
+  endif ()
+
+
+
    endif()
    
 endif()
-- 
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