c++ - 使用 vcpkg 如何使用不同的 C++ 标准构建 boost ？

Question

在 macos 10.14.1 上构建与 boost 的默认 vcpkg 构建链接的应用程序会产生以下错误:

Undefined symbols for architecture x86_64:
  "boost::system::detail::system_category_instance", referenced from:
      boost::system::system_category()     in main.cxx.o
      boost::asio::io_context::run()    in main.cxx.o
      boost::asio::detail::socket_ops::close(int, unsigned char&, bool, boost::system::error_code&) in main.cxx.o
      boost::asio::detail::socket_holder::~socket_holder() in main.cxx.o
      boost::asio::detail::reactive_socket_service_base::destroy(boost::asio::detail::reactive_socket_service_base::base_implementation_type&) in main.cxx.o
      _main in main.cxx.o
      boost::asio::ip::basic_resolver_iterator<boost::asio::ip::tcp> boost::asio::connect<boost::asio::ip::tcp, boost::asio::ip::basic_resolver_iterator<boost::asio::ip::tcp> >(boost::asio::basic_socket<boost::asio::ip::tcp>&, boost::asio::ip::basic_resolver_iterator<boost::asio::ip::tcp>, boost::asio::ip::basic_resolver_iterator<boost::asio::ip::tcp>) in main.cxx.o
      ...
  "boost::system::detail::generic_category_instance", referenced from:
      boost::system::generic_category()     in main.cxx.o
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status
make[2]: *** [cleverly] Error 1
make[1]: *** [CMakeFiles/cleverly.dir/all] Error 2
make: *** [all] Error 2

如果我正确阅读以下内容:

• https://github.com/Microsoft/vcpkg/issues/4437
• https://github.com/boostorg/system/issues/26

我假设必须使用与应用程序相同版本的 c++ 重新编译 boost。

使用 vcpkg，如何改变用于编译 boost 库的 c++ 标准？

更新

libboost_system.a 确实是 64 位的。

lipo -info libboost_system.a
Non-fat file: libboost_system.a is architecture: x86_64

当 make 以 VERBOSE=1 运行时链接命令:

/usr/local/Cellar/cmake/3.12.4/bin/cmake -E cmake_link_script CMakeFiles/cleverly.dir/link.txt --verbose=1
/usr/local/bin/g++-HEAD   -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk -Wl,-search_paths_first -Wl,-headerpad_max_install_names  CMakeFiles/cleverly.dir/Users/sheel/Projects/sheeldme/cleverly-misogamist/source/main.cxx.o  -o cleverly /opt/vcpkg/installed/x64-osx/debug/lib/libboost_system.a /opt/vcpkg/installed/x64-osx/debug/lib/libboost_filesystem.a /opt/vcpkg/installed/x64-osx/debug/lib/libboost_date_time.a /opt/vcpkg/installed/x64-osx/debug/lib/libboost_thread.a /opt/vcpkg/installed/x64-osx/debug/lib/libboost_regex.a /opt/vcpkg/installed/x64-osx/debug/lib/libboost_serialization.a /opt/vcpkg/installed/x64-osx/debug/lib/libboost_chrono.a /opt/vcpkg/installed/x64-osx/debug/lib/libboost_atomic.a

符号表通过:objdump -t libboost_system.a

libboost_system.a(error_code.o):    file format Mach-O 64-bit x86-64

SYMBOL TABLE:
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0000000000016178 l       __DATA,__bss   __ZGVZN5boost6system6detail20generic_category_ncxEvE25generic_category_instance
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Answer 1

在 vcpkg/ports/boost-modular-build-helper/CMakeLists.txt 中修补文件。

使用 cxxstd= 修补自定义 boost 目标，然后是您希望编译的标准。

引用:https://github.com/Microsoft/vcpkg/issues/4476