CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY


In file included from /usr/include/c++/7/string_view:39:0,
                 from /home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:20,
                 from /home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/description.h:20,
                 from /home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/common/description.cc:8:
/usr/include/c++/7/bits/c++17_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2017 standard. This support must be enabled with the -std=c++17 or -std=gnu++17 compiler options.
 #error This file requires compiler and library support \
  ^~~~~
In file included from /home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/description.h:20:0,
                 from /home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/common/description.cc:8:
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:109:27: error: ‘string_view’ is not a member of ‘std’
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>> fixed_;
                           ^~~~~~~~~~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:109:27: note: suggested alternative: ‘stringstream’
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>> fixed_;
                           ^~~~~~~~~~~
                           stringstream
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:109:27: error: ‘string_view’ is not a member of ‘std’
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:109:27: note: suggested alternative: ‘stringstream’
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>> fixed_;
                           ^~~~~~~~~~~
                           stringstream
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:109:71: error: template argument 1 is invalid
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>> fixed_;
                                                                       ^~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:109:71: error: template argument 3 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:109:71: error: template argument 4 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:109:71: error: template argument 5 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:110:27: error: ‘string_view’ is not a member of ‘std’
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>> param_;
                           ^~~~~~~~~~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:110:27: note: suggested alternative: ‘stringstream’
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>> param_;
                           ^~~~~~~~~~~
                           stringstream
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:110:27: error: ‘string_view’ is not a member of ‘std’
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:110:27: note: suggested alternative: ‘stringstream’
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>> param_;
                           ^~~~~~~~~~~
                           stringstream
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:110:71: error: template argument 1 is invalid
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>> param_;
                                                                       ^~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:110:71: error: template argument 3 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:110:71: error: template argument 4 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:110:71: error: template argument 5 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:111:27: error: ‘string_view’ is not a member of ‘std’
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>>
                           ^~~~~~~~~~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:111:27: note: suggested alternative: ‘stringstream’
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>>
                           ^~~~~~~~~~~
                           stringstream
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:111:27: error: ‘string_view’ is not a member of ‘std’
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:111:27: note: suggested alternative: ‘stringstream’
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>>
                           ^~~~~~~~~~~
                           stringstream
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:111:71: error: template argument 1 is invalid
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>>
                                                                       ^~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:111:71: error: template argument 3 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:111:71: error: template argument 4 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:111:71: error: template argument 5 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:123:48: error: ‘string_view’ in namespace ‘std’ does not name a type
   static SegmentType getSegmentType(const std::string_view &fragment);
                                                ^~~~~~~~~~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:141:24: error: ‘string_view’ in namespace ‘std’ does not name a type
   findRoute(const std::string_view &path, std::vector<TypedParam> &params,
                        ^~~~~~~~~~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:169:28: error: ‘string_view’ in namespace ‘std’ does not name a type
   void addRoute(const std::string_view &path, const Route::Handler &handler,
                            ^~~~~~~~~~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:182:31: error: ‘string_view’ in namespace ‘std’ does not name a type
   bool removeRoute(const std::string_view &path);
                               ^~~~~~~~~~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/source_subfolder/src/../include/pistache/router.h:198:24: error: ‘string_view’ in namespace ‘std’ does not name a type
   findRoute(const std::string_view &path) const;
                        ^~~~~~~~~~~
make[2]: *** [source_subfolder/src/CMakeFiles/pistache.dir/common/description.cc.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [source_subfolder/src/CMakeFiles/pistache.dir/all] Error 2
make: *** [all] Error 2
pistache/cci.20201127: WARN: Build folder is dirty, removing it: /home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d
pistache/cci.20201127: ERROR: Package '84133b3a8fe6964f3e80ae58a369d8dee9cfac2d' build failed
pistache/cci.20201127: WARN: Build folder /home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d
ERROR: pistache/cci.20201127: Error in build() method, line 86
	cmake.build()
	ConanException: Error 2 while executing cmake --build '/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/84133b3a8fe6964f3e80ae58a369d8dee9cfac2d/build_subfolder' '--' '-j3'