[MacPorts] #68518: boost181: error: "Boost.Locale requires C++11 since Boost 1.81."

[MacPorts]

#68518: boost181: error: "Boost.Locale requires C++11 since Boost 1.81."
------------------------+----------------------
 Reporter:  ryandesign  |      Owner:  (none)
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.8.1
 Keywords:  yosemite    |       Port:  boost181
------------------------+----------------------
 On this buildbot worker:

 OS X Yosemite v10.10.5 (14F2511) \\
 Xcode v7.2.1 (7C1002) \\
 Apple LLVM version 7.0.2 (clang-700.1.81)

 thrift, which uses boost 1.81, fails to build:

 https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/242994/steps
 /install-port/logs/stdio

 {{{
 libtool: compile:  /usr/bin/clang++ -std=c++11 -DHAVE_CONFIG_H
 -I/opt/local/libexec/boost/1.81/include
 -I/opt/local/libexec/openssl3/include -I./src -D__STDC_FORMAT_MACROS
 -D__STDC_LIMIT_MACROS -I/opt/local/libexec/boost/1.81/include
 -I/opt/local/include -DBOOST_TEST_DYN_LINK -Wall -Wextra -pedantic -pipe
 -I/opt/local/libexec/boost/1.81/include -Os -stdlib=libc++ -arch x86_64
 -MT src/thrift/protocol/TJSONProtocol.lo -MD -MP -MF
 src/thrift/protocol/.deps/TJSONProtocol.Tpo -c
 src/thrift/protocol/TJSONProtocol.cpp  -fno-common -DPIC -o
 src/thrift/protocol/.libs/TJSONProtocol.o
 }}}
 {{{
 In file included from src/thrift/protocol/TJSONProtocol.cpp:22:
 In file included from
 /opt/local/libexec/boost/1.81/include/boost/locale.hpp:10:
 In file included from
 /opt/local/libexec/boost/1.81/include/boost/locale/boundary.hpp:10:
 In file included from
 /opt/local/libexec/boost/1.81/include/boost/locale/boundary/boundary_point.hpp:10:
 In file included from
 /opt/local/libexec/boost/1.81/include/boost/locale/boundary/types.hpp:10:
 /opt/local/libexec/boost/1.81/include/boost/locale/config.hpp:56:6: error:
 "Boost.Locale requires C++11 since Boost 1.81."
 #    error "Boost.Locale requires C++11 since Boost 1.81."
      ^
 }}}

 This is surprising since the thrift portfile does request a C++11 compiler
 with `compiler.cxx_standard 2011` and the thrift build does put the
 compiler into C++11 mode with `-std=c++11`.

 Maybe boost181 requires something more than baseline C++11 support, or
 maybe MacPorts base is wrong about this version of clang having full
 baseline C++11 support. config.hpp says:

 {{{#!c
 // Check for some C++11 features to provide easier checks for what is
 missing
 // shortly after the requirement of C++11 in Boost 1.81
 // clang-format off
 #if defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || \
     defined(BOOST_NO_CXX11_DEFAULTED_MOVES) ||     \
     defined(BOOST_NO_CXX11_HDR_FUNCTIONAL) ||      \
     defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS) ||     \
     defined(BOOST_NO_CXX11_NOEXCEPT) ||            \
     defined(BOOST_NO_CXX11_OVERRIDE) ||            \
     defined(BOOST_NO_CXX11_RVALUE_REFERENCES) ||   \
     defined(BOOST_NO_CXX11_SMART_PTR) ||           \
     defined(BOOST_NO_CXX11_STATIC_ASSERT)
 // clang-format on
 #    error "Boost.Locale requires C++11 since Boost 1.81."
 #endif
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/68518>
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