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cmake_minimum_required(VERSION 2.6)
project(GUDHIAlphaShapesExample)
add_executable ( flat flat.cpp )
# 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} )
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()
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