[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):

 and this:
 {{{
  clang++-mp-11 -std=c++17 -D_LIBCPP_DISABLE_AVAILABILITY
 -L/opt/local/libexec/llvm-11/lib/
 -Wl,-rpath,/opt/local/libexec/llvm-11/lib/ fstest.cpp
 }}}
 also works on 10.6.8, I'm happy to say.
 {{{
 $ otool -L a.out
 a.out:
         @rpath/libc++.1.dylib (compatibility version 1.0.0, current
 version 1.0.0)
         /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
 version 125.2.11)
 }}}
 {{{
 $ ./a.out
 Displaying path info for: "/Users/kencu/Desktop"
 path part: 0 = "/"
 path part: 1 = "Users"
 path part: 2 = "kencu"
 path part: 3 = "Desktop"
 exists() = 1
 ...
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/62426#comment:10>
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