[MacPorts] #64920: Allow universal variant for llvm-5.0

[MacPorts]

#64920: Allow universal variant for llvm-5.0
---------------------------+-------------------------------------
  Reporter:  barracuda156  |      Owner:  (none)
      Type:  enhancement   |     Status:  closed
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.2
Resolution:  wontfix       |   Keywords:  powerpc, leopard, ppc64
      Port:  llvm-5.0      |
---------------------------+-------------------------------------

Comment (by barracuda156):

 Replying to [comment:1 kencu]:
 > llvm-5.0 has a universal variant, and builds universal just fine and
 dandy -- however, it is only enabled to build universal as i386/x86_64, as
 PowerPC llvm-5.0 is broken and so it is not enabled in the main MacPorts
 repo.
 >
 > Most of what you added is not used for the llvm-5.0 branch -- it was
 used for an older llvm build that built with autotools and is no longer
 used.
 >
 > Someday, if Iain or somebody else actually fixes llvm-7.0 (or whichever)
 to actually work properly, then perhaps some kind soul might properly fix
 a build for PowerPC that might be accepted into MacPorts, once it is fully
 tested and vetted to work.

 I had a lesser aim in mind, to build ld64 as +universal (ppc+ppc64), which
 fails with llvm-3.3 and llvm-3.4, but works with llvm-5.0 on PowerPC.
 `ld64-97 +llvm50` works perfectly then.

-- 
Ticket URL: <https://trac.macports.org/ticket/64920#comment:2>
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