[MacPorts] #52537: hatari - fix for build on Snow Leopard without Xcode 4.2

[MacPorts]

#52537: hatari - fix for build on Snow Leopard without Xcode 4.2
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  Reporter:  ken.cunningham.webuse@…  |      Owner:  macports-tickets@…
      Type:  defect                   |     Status:  new
  Priority:  Normal                   |  Milestone:
 Component:  ports                    |    Version:  2.3.4
Resolution:                           |   Keywords:  haspatch maintainer
      Port:  hatari                   |
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Comment (by ken.cunningham.webuse@…):

 Larry & Ryan, you were right. SnowLeopard will build the MacOS GUI with
 xcode 3.2.6 installed, but with a newer version of clang.

 In the end I forced it to macports-clang-3.7 or newer, as most people
 would / should likely have that clang version on Snow Leopard.  (3.8
 doesn't work correctly, and 3.9 won't compile on SL unless you have
 installed my as-yet-not-published libSnowLeopardFixes port.

 I must admit, the blacklisting / fallbacking took a while to figure out
 right, and I'm not certain even now I have it fully correct.

 Even when I blacklisted { clang < 211 } the system kept choosing xcode's
 clang. I tried bumping the number up to 500, and it '''still''' chose
 xcode's clang, even though i have macports-clang-3.7 installed. Only when
 I blacklisted all clang did it ignore xcode's clang, and then it started
 installed macports-clang-3.4 (even though macports-clang-3.7 was there). I
 understand in a rudimentary way how the logic for this goes, but if you're
 going to force a clang install on SL, it might as well be 3.7.

 Ultimately I blacklisted everything up to macports-clang-3.6, and then
 added a fallback for 3.7. I suppose I might just have whitelisted
 macports-clang-3.7 and achieved the same effect.

 New portfile fix coming shortly. Let me know if I got it right this time.
 --K

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Ticket URL: <https://trac.macports.org/ticket/52537#comment:11>
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