[MacPorts] #60726: libunwind-headers: has a dependency on clang-3.7 etc that it should not have on SnowLeopard

[MacPorts]

#60726: libunwind-headers: has a dependency on clang-3.7 etc that it should not
have on SnowLeopard
---------------------------------------+-------------------------------
 Reporter:  kencu                      |      Owner:  jeremyhu
     Type:  defect                     |     Status:  assigned
 Priority:  Normal                     |  Milestone:
Component:  ports                      |    Version:
 Keywords:  snowleopard leopard tiger  |       Port:  libunwind-headers
---------------------------------------+-------------------------------
 {{{libunwind-headers}}} just installs some headers, and has no build
 phase.

 It makes efforts on older systems not to have any dependencies in the
 Portfile, but these efforts do not appear fruitful.

 On a clean install of SnowLeopard:

 {{{
 $ uname -a
 Darwin SL2.local 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun  7 16:33:36
 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386

 $ port -v
 MacPorts 2.6.2

 $ port -v installed
 No ports are installed.

 $ port rdeps libunwind-headers
 The following ports are dependencies of libunwind-headers @5.0.1_0:
   xz-bootstrap
     libiconv-bootstrap
       gperf-bootstrap
     gettext-bootstrap
       ncurses-bootstrap
   clang-3.7
     cctools
       libunwind-headers
       llvm-3.4
         libffi
         zlib
         perl5
           perl5.28
             xz
               clang-3.4
                 python27-bootstrap
                   pkgconfig-bootstrap
                   bzip2
                   expat
                   openssl
                 clang_select
                 ld64
                   ld64-127
                     libmacho-headers
               libiconv
                 gperf
                   libcxx
               gettext
                 ncurses
             db48
             gdbm
               readline
         llvm_select
     llvm-3.7
       libedit
       python27
         pkgconfig
         sqlite3
         python_select
         python2_select


 }}}

 And this dramatically increases the bootstrap load for libcxx of course,
 which I am working on today.

 I will see if I can figure out why this is broken...

-- 
Ticket URL: <https://trac.macports.org/ticket/60726>
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