[MacPorts] #54129: llvm-4.0 build fails due to libtool error on SnowLeopard when built with clang-3.9, but succeeds when built with clang-3.7

[MacPorts]

#54129: llvm-4.0 build fails due to libtool error on SnowLeopard when built with
clang-3.9, but succeeds when built with clang-3.7
-----------------------+----------------------
  Reporter:  kencu     |      Owner:  jeremyhu
      Type:  defect    |     Status:  accepted
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  llvm-4.0  |
-----------------------+----------------------

Comment (by jeremyhu):

 Does it work just adding the CMAKE_LIBTOOL block behind pre_configure?
 configure.compiler should always evaluate after the blacklisting, so I
 doubt that is problematic.

 {{{
 @@ -243,10 +243,12 @@ if {[string match macports-clang-*
 ${configure.compiler}]} {
      depends_skip_archcheck-append cctools
  }

 -# Set CMAKE_LIBTOOL if we're using MacPorts-provided cctools
 -if {[lsearch -exact $PortInfo(depends_build) port:cctools] != -1} {
 -    configure.args-append \
 -        -DCMAKE_LIBTOOL=${prefix}/bin/libtool
 +pre_configure {
 +    # Set CMAKE_LIBTOOL if we're using MacPorts-provided cctools
 +    if {[lsearch -exact $PortInfo(depends_build) port:cctools] != -1} {
 +        configure.args-append \
 +            -DCMAKE_LIBTOOL=${prefix}/bin/libtool
 +    }
  }

  if {${subport} eq "llvm-${llvm_version}"} {
 }}}

--
Ticket URL: <https://trac.macports.org/ticket/54129#comment:25>
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