Boost 1.66.0 is now the minimal version as required from cgal 5.1 - Also remove useless include boost/version.h

8 files changed, 6 insertions, 14 deletions

diff --git a/.github/next_release.md b/.github/next_release.md
index 65a92816..e21b25c7 100644
--- a/.github/next_release.md
+++ b/.github/next_release.md
@@ -13,6 +13,9 @@ Below is a list of changes made since GUDHI 3.5.0:
 - [Representations](https://gudhi.inria.fr/python/latest/representations.html#gudhi.representations.vector_methods.BettiCurve)
      - A more flexible Betti curve class capable of computing exact curves
 
+- Installation
+     - Boost ≥ 1.66.0 is now required (was ≥ 1.56.0).
+
 - [Module](link)
      - ...
 
diff --git a/src/Alpha_complex/include/gudhi/Alpha_complex_3d.h b/src/Alpha_complex/include/gudhi/Alpha_complex_3d.h
index ccc3d852..df5c630e 100644
--- a/src/Alpha_complex/include/gudhi/Alpha_complex_3d.h
+++ b/src/Alpha_complex/include/gudhi/Alpha_complex_3d.h
@@ -12,7 +12,6 @@
 #ifndef ALPHA_COMPLEX_3D_H_
 #define ALPHA_COMPLEX_3D_H_
 
-#include <boost/version.hpp>
 #include <boost/variant.hpp>
 #include <boost/range/size.hpp>
 #include <boost/range/combine.hpp>
diff --git a/src/Simplex_tree/include/gudhi/Simplex_tree/Simplex_tree_iterators.h b/src/Simplex_tree/include/gudhi/Simplex_tree/Simplex_tree_iterators.h
index ee64a277..e5522cc7 100644
--- a/src/Simplex_tree/include/gudhi/Simplex_tree/Simplex_tree_iterators.h
+++ b/src/Simplex_tree/include/gudhi/Simplex_tree/Simplex_tree_iterators.h
@@ -14,7 +14,6 @@
 #include <gudhi/Debug_utils.h>
 
 #include <boost/iterator/iterator_facade.hpp>
-#include <boost/version.hpp>
 #include <boost/container/static_vector.hpp>
 
 #include <vector>
diff --git a/src/Subsampling/include/gudhi/sparsify_point_set.h b/src/Subsampling/include/gudhi/sparsify_point_set.h
index 4571b8f3..b325fe3c 100644
--- a/src/Subsampling/include/gudhi/sparsify_point_set.h
+++ b/src/Subsampling/include/gudhi/sparsify_point_set.h
@@ -11,12 +11,7 @@
 #ifndef SPARSIFY_POINT_SET_H_
 #define SPARSIFY_POINT_SET_H_
 
-#include <boost/version.hpp>
-#if BOOST_VERSION < 106600
-# include <boost/function_output_iterator.hpp>
-#else
 # include <boost/iterator/function_output_iterator.hpp>
-#endif
 
 #include <gudhi/Kd_tree_search.h>
 #ifdef GUDHI_SUBSAMPLING_PROFILING
diff --git a/src/cmake/modules/GUDHI_third_party_libraries.cmake b/src/cmake/modules/GUDHI_third_party_libraries.cmake
index b316740d..68ffaee1 100644
--- a/src/cmake/modules/GUDHI_third_party_libraries.cmake
+++ b/src/cmake/modules/GUDHI_third_party_libraries.cmake
@@ -1,6 +1,6 @@
 # This files manage third party libraries required by GUDHI
 
-find_package(Boost 1.56.0 QUIET OPTIONAL_COMPONENTS filesystem unit_test_framework program_options)
+find_package(Boost 1.66.0 QUIET OPTIONAL_COMPONENTS filesystem unit_test_framework program_options)
 
 # Boost_FOUND is not reliable
 if(NOT Boost_VERSION)
diff --git a/src/common/doc/installation.h b/src/common/doc/installation.h
index ef668dfb..67d026bd 100644
--- a/src/common/doc/installation.h
+++ b/src/common/doc/installation.h
@@ -5,7 +5,7 @@
  * Examples of GUDHI headers inclusion can be found in \ref utilities.
  * 
  * \section compiling Compiling
- * The library uses c++14 and requires <a target="_blank" href="http://www.boost.org/">Boost</a>  &ge; 1.56.0
+ * The library uses c++14 and requires <a target="_blank" href="http://www.boost.org/">Boost</a>  &ge; 1.66.0
  * and <a target="_blank" href="https://www.cmake.org/">CMake</a> &ge; 3.5.
  * It is a multi-platform library and compiles on Linux, Mac OSX and Visual Studio 2015.
  * 
diff --git a/src/common/include/gudhi/reader_utils.h b/src/common/include/gudhi/reader_utils.h
index a1b104e2..29d5423d 100644
--- a/src/common/include/gudhi/reader_utils.h
+++ b/src/common/include/gudhi/reader_utils.h
@@ -14,11 +14,7 @@
 #include <gudhi/graph_simplicial_complex.h>
 #include <gudhi/Debug_utils.h>
 
-#if BOOST_VERSION < 106600
-# include <boost/function_output_iterator.hpp>
-#else
 # include <boost/iterator/function_output_iterator.hpp>
-#endif
 #include <boost/graph/adjacency_list.hpp>
 
 #include <iostream>
diff --git a/src/python/doc/installation.rst b/src/python/doc/installation.rst
index 35c344e3..c2c3db34 100644
--- a/src/python/doc/installation.rst
+++ b/src/python/doc/installation.rst
@@ -39,7 +39,7 @@ If you are instead using a git checkout, beware that the paths are a bit
 different, and in particular the `python/` subdirectory is actually `src/python/`
 there.
 
-The library uses c++14 and requires `Boost <https://www.boost.org/>`_ :math:`\geq` 1.56.0,
+The library uses c++14 and requires `Boost <https://www.boost.org/>`_ :math:`\geq` 1.66.0,
 `CMake <https://www.cmake.org/>`_ :math:`\geq` 3.5  to generate makefiles,
 `NumPy <http://numpy.org>`_ :math:`\geq` 1.15.0, `Cython <https://www.cython.org/>`_ and
 `pybind11 <https://github.com/pybind/pybind11>`_ to compile