[MacPorts] #54346: glib2 @2.52.2 fails to build on macOS <= 10.8

[MacPorts]

#54346: glib2 @2.52.2 fails to build on macOS <= 10.8
----------------------+------------------------
  Reporter:  rlhamil  |      Owner:  ryandesign
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.4.1
Resolution:           |   Keywords:
      Port:  glib2    |
----------------------+------------------------

Comment (by kencu):

 Looks like it might be not too difficult to fix for older systems. In the
 file of note `gio/giomodule.c`, they now have this:

 {{{
 #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
 extern GType g_cocoa_notification_backend_get_type (void);
 #endif
 }}}

 so I tried just disabling the patch completely
 {{{
 if {[vercmp ${macosx_deployment_target} 10.9] < 0} {
     # gcocoanotificationbackend requires OS X 10.9 or later.
     # patchfiles-append       remove-gcocoanotificationbackend.patch
 } else {
     # gcocoanotificationbackend.c:115:52: error: array subscript is not an
 integer
     compiler.blacklist-append {clang < 600}
 }

 }}}

 and it installed without issue:
 {{{
 $ port -v installed glib2
 The following ports are currently installed:
   glib2 @2.50.3_0+universal platform='darwin 10' archs='i386 x86_64'
 date='2017-02-15T12:56:54-0800'
   glib2 @2.52.2_1+universal+x11 (active) platform='darwin 10' archs='i386
 x86_64' date='2017-06-18T17:12:39-0700'
 }}}

 I don't know about the +quartz variant, all my glib2 stuff is not
 installed that way. Someone want to try?

 I assume we still will need to set the compiler blacklisting for systems
 10.9 or later. My 10.6 system is building with clang-3.9 so I don't know
 exactly what the minimum compiler would need to be.

--
Ticket URL: <https://trac.macports.org/ticket/54346#comment:3>
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