[cn] using hashcodes for graph exploration

CMakeLists.txt

@@ -50,16 +50,16 @@
 # Compilation configuration
 ################################################################################
 
-#  # Check that the compiler supports c++11
-#  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")
-#  else()
-#    message(FATAL_ERROR "Tubex needs a compiler with C++11 support")
-#  endif()
-#
+  # Check that the compiler supports c++11
+  include(CheckCXXCompilerFlag)
+  check_cxx_compiler_flag("-std=c++17" COMPILER_SUPPORTS_CXX17)
+
+  if(COMPILER_SUPPORTS_CXX17)
+    add_compile_options(-std=c++17)
+  else()
+    message(FATAL_ERROR "Tubex needs a compiler with C++17 support")
+  endif()
+
 #  if(WIN32)
 #    # We need this for strdup under Windows (see issue #287 of ibex-lib repo)
 #    add_definitions(-U__STRICT_ANSI__)

src/core/CMakeLists.txt

@@ -118,6 +118,8 @@
                   ${CMAKE_CURRENT_SOURCE_DIR}/cn/tubex_ContractorNetwork_solve.cpp
                   ${CMAKE_CURRENT_SOURCE_DIR}/cn/tubex_ContractorNetwork_visu.cpp
                   ${CMAKE_CURRENT_SOURCE_DIR}/cn/tubex_ContractorNetwork.h
+                  ${CMAKE_CURRENT_SOURCE_DIR}/cn/tubex_Hashcode.cpp
+                  ${CMAKE_CURRENT_SOURCE_DIR}/cn/tubex_Hashcode.h
                   ${CMAKE_CURRENT_SOURCE_DIR}/tools/tubex_Tools.cpp
                   ${CMAKE_CURRENT_SOURCE_DIR}/tools/tubex_Tools.h
                   )
@@ -146,6 +148,9 @@
                                           ${CMAKE_CURRENT_SOURCE_DIR}/cn
                                           ${CMAKE_CURRENT_SOURCE_DIR}/tools)
   target_link_libraries(tubex PUBLIC Ibex::ibex)
+
+  set_property(TARGET tubex PROPERTY CXX_STANDARD 17)
+  set_property(TARGET tubex PROPERTY CXX_STANDARD_REQUIRED ON)
 
 
 ################################################################################