[MacPorts] #62426: libc++: using a newer libc++ to build software on older macos systems

[MacPorts]

#62426: libc++: using a newer libc++ to build software on older macos systems
--------------------------+----------------------
  Reporter:  kencu        |      Owner:  kencu
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  libcxx       |
--------------------------+----------------------

Comment (by kencu):

 But, this does work:
 {{{
 $ /usr/bin/clang++ -std=c++17 -D_LIBCPP_DISABLE_AVAILABILITY
 /opt/local/libexec/llvm-11/lib/libc++.a
 /opt/local/libexec/llvm-11/lib/libc++abi.a fstest.cpp
 }}}

 and gives us:
 {{{
 $ ls -la a.out
 -rwxr-xr-x  1 kencu  staff  838712 10 Mar 18:06 a.out
 }}}
 {{{
 $ ./a.out
 Displaying path info for: "/Users/kencu"
 path part: 0 = "/"
 path part: 1 = "Users"
 path part: 2 = "cunn kencu ingh"
 exists() = 1
 root_name() = ""
 root_path() = "/"
 relative_path() = "Users/kencu"
 parent_path() = "/Users"
 filename() = "kencu"
 stem() = "kencu"
 extension() = ""
 canonical() = "/Users/kencu"
 path concat/append:
 "C:\\temp/user/data"
 "C:\\temp\\userdata"
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/62426#comment:2>
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