[MacPorts] #71068: R build fails due to g95 dependency, despite specifying gcc

[MacPorts]

#71068: R build fails due to g95 dependency, despite specifying gcc
------------------------+--------------------
  Reporter:  klausness  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.10.2
Resolution:             |   Keywords:  R g95
      Port:  R          |
------------------------+--------------------

Comment (by barracuda156):

 Replying to [comment:9 Alex11N]:
 > Adding a probably redundant data point, I have ''exactly'' the same
 problem on Sonoma 14.7 using the latest macports (2.10.2), Xcode (16.0)
 and the CLTs.
 >
 > macports gcc is 14.2.0_3+stdlib_flag (active); macports llvm suites are:
 llvm-16 @16.0.6_1 (active), llvm-18 @18.1.8_0 (active). llvm18 rebuilt
 successfully last night from the latest macports update.
 >
 > The g95 roadblock is still persistent of course. I made the daft mistake
 of uninstalling R, so will now have to get the precompiled version from
 r-projects.org. That also means downloading a whole stack of libraries
 again. This is all a bit frustrating.
 >
 > As a final comment, there's absolutely NO WAY that I'm installing 15.0.x
 Sequoia on this current Mac (2019 19,2 i7 machine).

 I am not sure why everyone keeps installing a semi-broken Xcode 16 when
 the native Xcode 15 would have worked perfectly fine, but the fix for R it
 trivial: just change Darwin 23 to Darwin 22 in the code chunks I
 referenced above. So that gcc14 is used.
 However, that gonna require building R stuff from source.

 MacPorts should have informed users to avoid Xcode 16 on Sonoma. And as
 long as buildbots use one Xcode and end-users use another, incompatible
 one, there is no general fix for the issue.

-- 
Ticket URL: <https://trac.macports.org/ticket/71068#comment:10>
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