[MacPorts] #65918: xz-bootstrap uses clang for PPC on Rosetta

[MacPorts]

#65918: xz-bootstrap uses clang for PPC on Rosetta
-------------------------------------------+--------------------------
 Reporter:  barracuda156                   |      Owner:  ryandesign
     Type:  defect                         |     Status:  assigned
 Priority:  Normal                         |  Milestone:
Component:  ports                          |    Version:  2.7.2
 Keywords:  powerpc, snowleopard, rosetta  |       Port:  xz-bootstrap
-------------------------------------------+--------------------------
 This problem ''only'' concerns `xz-bootstrap`, not regular `xz` (the
 latter correctly uses `gcc-4.2`).

 The port still [pretends to] build – with multiple warnings:
 {{{
 clang: warning: not using the clang compiler for the 'powerpc'
 architecture
 }}}

 This is a wrong behavior, clang should never be invoked for `ppc` builds.

-- 
Ticket URL: <https://trac.macports.org/ticket/65918>
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