[MacPorts] #64390: Possible to build ports on 10.6.8 as universal (x86_64 + ppc64) after restoring PPC assembler?

[MacPorts]

#64390: Possible to build ports on 10.6.8 as universal (x86_64 + ppc64) after
restoring PPC assembler?
-----------------------------+--------------------
  Reporter:  barracuda156    |      Owner:  (none)
      Type:  enhancement     |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  base            |    Version:  2.7.1
Resolution:                  |   Keywords:
      Port:  powerpc, ppc64  |
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Comment (by barracuda156):

 Replying to [comment:3 kencu]:

 Thank you for replying!

 1. I will bring the bigger question of building cross-compilers into
 discussions on Iain’s page. Ref for others who may wish to join:
 https://github.com/iains/darwin-toolchains-start-here/discussions

 2. As for gcc with Macports, it does use gcc-4.2 for many ports as a
 default compiler. And I recall you told me that Macports’s gcc7 cannot be
 used to cross-compile for PowerPC, or am I wrong here? If we restrict
 discussion to Macports, what realistic options are there to build on
 10.6.8 Intel for x86_64 + ppc(64)?

 3. In any case, this is perhaps a relevant thing to know: how to specify a
 compiler depending on architecture? Should I use a similar way that you
 used with SnowLeopardPPC ports, compilers setting file? Is it even
 feasible to use two different compilers for arch portions of same
 universal binary? Or I have to simply ban llvm-gcc all through?

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Ticket URL: <https://trac.macports.org/ticket/64390#comment:4>
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