[MacPorts] #58277: mongodb @4.0.7: build fails with C++ library issues using Xcode 10.2

[MacPorts]

#58277: mongodb @4.0.7: build fails with C++ library issues using Xcode 10.2
---------------------+------------------------
 Reporter:  dbevans  |      Owner:  ryandesign
     Type:  defect   |     Status:  assigned
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:
 Keywords:           |       Port:  mongodb
---------------------+------------------------
 Build fails on macOS 10.14.4 using

 {{{
 Xcode 10.2
 Build version 10E125
 Apple LLVM version 10.0.1 (clang-1001.0.46.3)
 }}}

 as follows (no problem with Xcode 10.1)

 {{{
 :info:build /usr/bin/clang++ -o build/MP/mongo/transport/transport_layer.o
 -c -Woverloaded-virtual -Werror=unused-result -Wpessimizing-move
 -Wredundant-move -Wno-undefined-var-template -Wno-instantiation-after-
 specialization -stdlib=libc++ -std=c++14 -arch x86_64
 -isysroot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk
 -fno-omit-frame-pointer -fno-strict-aliasing -ggdb -pthread -Wall -Wsign-
 compare -Wno-unknown-pragmas -Winvalid-pch -O2 -Wno-unused-local-typedefs
 -Wno-unused-function -Wno-unused-private-field -Wno-deprecated-
 declarations -Wno-tautological-constant-out-of-range-compare -Wno-
 tautological-constant-compare -Wno-tautological-unsigned-zero-compare
 -Wno-tautological-unsigned-enum-zero-compare -Wno-unused-const-variable
 -Wno-missing-braces -Wno-inconsistent-missing-override -Wno-potentially-
 evaluated-expression -Wno-unused-lambda-capture -Wno-exceptions
 -Wunguarded-availability -fstack-protector-strong -fno-builtin-memcmp
 -DPCRE_STATIC -DNDEBUG -DBOOST_SYSTEM_NO_DEPRECATED
 -DBOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS -Isrc/third_party/pcre-8.41
 -Isrc/third_party/boost-1.60.0 -I/opt/local/include -Ibuild/MP -Isrc
 src/mongo/transport/transport_layer.cpp
 :info:build In file included from
 src/mongo/transport/transport_layer_asio.cpp:37:
 :info:build In file included from src/third_party/asio-
 master/asio/include/asio.hpp:21:
 :info:build In file included from src/third_party/asio-
 master/asio/include/asio/basic_datagram_socket.hpp:20:
 :info:build In file included from src/third_party/asio-
 master/asio/include/asio/basic_socket.hpp:40:
 :info:build In file included from src/third_party/asio-
 master/asio/include/asio/detail/reactive_socket_service.hpp:22:
 :info:build In file included from src/third_party/asio-
 master/asio/include/asio/buffer.hpp:27:
 :info:build In file included from src/third_party/asio-
 master/asio/include/asio/detail/string_view.hpp:23:
 :info:build
 /Applications/Xcode.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."
 :info:build #error "<experimental/string_view> has been removed. Use
 <string_view> instead."
 :info:build  ^
 :info:build In file included from
 src/mongo/transport/transport_layer_asio.cpp:37:
 :info:build In file included from src/third_party/asio-
 master/asio/include/asio.hpp:21:
 :info:build In file included from src/third_party/asio-
 master/asio/include/asio/basic_datagram_socket.hpp:20:
 :info:build In file included from src/third_party/asio-
 master/asio/include/asio/basic_socket.hpp:40:
 :info:build In file included from src/third_party/asio-
 master/asio/include/asio/detail/reactive_socket_service.hpp:22:
 :info:build In file included from src/third_party/asio-
 master/asio/include/asio/buffer.hpp:27:
 :info:build src/third_party/asio-
 master/asio/include/asio/detail/string_view.hpp:31:12: error: no member
 named 'experimental' in namespace 'std'
 :info:build using std::experimental::basic_string_view;
 :info:build       ~~~~~^
 :info:build src/third_party/asio-
 master/asio/include/asio/detail/string_view.hpp:32:12: error: no member
 named 'experimental' in namespace 'std'
 :info:build using std::experimental::string_view;
 :info:build       ~~~~~^

 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/58277>
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