[MacPorts] #51116: ipe @7.2.2: build fails on Yosemite, undeclared identifier 'NSLayoutGuide'.

[MacPorts]

#51116: ipe @7.2.2: build fails on Yosemite, undeclared identifier 'NSLayoutGuide'.
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  Reporter:  devans@…  |      Owner:  m7.thon@…
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.3.4
Resolution:            |   Keywords:
      Port:  ipe       |
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Comment (by devans@…):

 I applied this patch locally and tested on 10.11, 10.10 and 10.9.  Builds
 fine on 10.11 but 10.10 and 10.9 both fail with same error as reported in
 here and in #51110.

 I'm thinking that MAC_OS_X_VERSION_10_11 and MAC_OS_X_VERSION_10_10 are
 probably not defined on earlier OS versions and should be replaced by
 their defined value to work correctly.

 For instance on 10.10.5, AvailabilityMacros.h only defines
 {{{
 #define MAC_OS_X_VERSION_10_0         1000
 #define MAC_OS_X_VERSION_10_1         1010
 #define MAC_OS_X_VERSION_10_2         1020
 #define MAC_OS_X_VERSION_10_3         1030
 #define MAC_OS_X_VERSION_10_4         1040
 #define MAC_OS_X_VERSION_10_5         1050
 #define MAC_OS_X_VERSION_10_6         1060
 #define MAC_OS_X_VERSION_10_7         1070
 #define MAC_OS_X_VERSION_10_8         1080
 #define MAC_OS_X_VERSION_10_9         1090
 #define MAC_OS_X_VERSION_10_10      101000
 #define MAC_OS_X_VERSION_10_10_2    101002
 #define MAC_OS_X_VERSION_10_10_3    101003
 }}}

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Ticket URL: <https://trac.macports.org/ticket/51116#comment:3>
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