Too many compilers needed for C++11

[Ryan Schmidt]

On Dec 6, 2017, at 08:20, db wrote:
> On 6 Dec 2017, at 00:46, Ken Cunningham wrote:
>> clang/llvm 5.0 is the current cxx11 1.1 compiler, so that is what is being called up.
> 
> Shouldn't such portgroup dependencies be listed by `port rdeps`? I don't see it, for example, in highlight.

They are, if you're running on an OS version where those dependencies are added.

In this case, the message "Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option" indicates that the port is not expected to build at all. (I don't know why MacPorts base considers this a warning, rather than an immediate-exit error.) The list of compiler dependencies is also probably wrong because of the wrong (first fallback) compiler MacPorts is attempting to use. If the port is expected to build, then the blacklisting specified by one or more of the ports is wrong.

$ sw_vers
ProductName:	Mac OS X
ProductVersion:	10.8.5
BuildVersion:	12F2560
$ port rdeps highlight
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
The following ports are dependencies of highlight @3.40_1:
  boost
    zlib
      xz
        libiconv
          gperf
        gettext
          expat
          ncurses
    bzip2
    icu
    python27
      pkgconfig
      db48
      libedit
      libffi
      openssl
      sqlite3
      python_select
      python2_select
  cctools
    libunwind-headers
    llvm-3.7
      libcxx
      perl5
        perl5.24
          gdbm
            readline
      llvm_select
  clang-5.0
    cmake
      curl
        libidn2
          autoconf
          automake
          libtool
            xattr
              unzip
          libunistring
            texinfo
              help2man
                perl5.26
                p5.26-locale-gettext
        curl-ca-bundle
      libarchive
        libxml2
        lzo2
        lz4
      libuv
    clang-4.0
      clang-3.9
        clang-3.8
          libomp
          llvm-3.8
          clang_select
          ld64
            ld64-latest
              libmacho-headers
        llvm-3.9
          xar
      llvm-4.0
    llvm-5.0
  lua
  libgcc
    gmp
    isl
    libmpc
      mpfr
$