Bug #4860
Updated by Davide Pesavento about 5 years ago
Xcode 10.2 apparently ships a new version of libc++ which "removed" the header `<experimental/string_view>`.
ndn-cxx build error below, but the root problem is in Boost.Asio, so I suspect pretty much everything else will fail in the same way.
```
In file included from ../ndn-cxx/net/network-monitor.cpp:25:
In file included from ../ndn-cxx/net/network-monitor.hpp:29:
In file included from ../ndn-cxx/net/network-interface.hpp:28:
In file included from ../ndn-cxx/net/network-address.hpp:29:
In file included from /usr/local/include/boost/asio/ip/address.hpp:21:
In file included from /usr/local/include/boost/asio/detail/string_view.hpp:25:
/Applications/Xcode-10.2.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/experimental/string_view:11:2: error: "<experimental/string_view> has been removed. Use <string_view> instead."
#error "<experimental/string_view> has been removed. Use <string_view> instead."
^
In file included from ../ndn-cxx/net/network-monitor.cpp:25:
In file included from ../ndn-cxx/net/network-monitor.hpp:29:
In file included from ../ndn-cxx/net/network-interface.hpp:28:
In file included from ../ndn-cxx/net/network-address.hpp:29:
In file included from /usr/local/include/boost/asio/ip/address.hpp:21:
/usr/local/include/boost/asio/detail/string_view.hpp:37:7: error: no member named 'basic_string_view' in namespace 'std::experimental'; did you mean 'std::basic_string_view'?
using std::experimental::basic_string_view;
^~~~~~~~~~~~~~~~~~~
/Applications/Xcode-10.2.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string_view:194:28: note: 'std::basic_string_view' declared here
class _LIBCPP_TEMPLATE_VIS basic_string_view {
^
In file included from ../ndn-cxx/net/network-monitor.cpp:25:
In file included from ../ndn-cxx/net/network-monitor.hpp:29:
In file included from ../ndn-cxx/net/network-interface.hpp:28:
In file included from ../ndn-cxx/net/network-address.hpp:29:
In file included from /usr/local/include/boost/asio/ip/address.hpp:21:
/usr/local/include/boost/asio/detail/string_view.hpp:38:7: error: no member named 'string_view' in namespace 'std::experimental'; did you mean 'std::string_view'?
using std::experimental::string_view;
^~~~~~~~~~~~~~~~~~~
/Applications/Xcode-10.2.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string_view:770:37: note: 'std::string_view' declared here
typedef basic_string_view<char> string_view;
^
3 errors generated.
```