1 files changed, 46 insertions, 0 deletions
diff --git a/src/Alpha_complex/example/CMakeLists.txt b/src/Alpha_complex/example/CMakeLists.txt
new file mode 100644
index 00000000..10b87f04
--- /dev/null
+++ b/src/Alpha_complex/example/CMakeLists.txt
@@ -0,0 +1,46 @@
+cmake_minimum_required(VERSION 2.6)
+project(GUDHIAlphaShapesExample)
+
+# need CGAL 4.7
+# cmake -DCGAL_DIR=~/workspace/CGAL-4.7-Ic-41 ../../..
+if(CGAL_FOUND)
+  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 ( alphaoffreader Alpha_complex_from_off.cpp )
+      target_link_libraries(alphaoffreader  ${Boost_SYSTEM_LIBRARY} ${CGAL_LIBRARY})
+
+      add_executable ( alphapoints Alpha_complex_from_points.cpp )
+      target_link_libraries(alphapoints  ${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()