[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 jeremyhu):

 I'm trying to read through this report because someone filed a radar about
 "Current xcode broke the use of macports and R (see item see
 https://trac.macports.org/ticket/71068)" last week.  Unfortunatley, the
 amount of detail in that radar is about as lacking as this ticket.

 Can someone please explain *HOW* Xcode broke the port or *WHAT*
 specifically Xcode 16 (or, presumably, the CLTools?) are doing that is
 impacting this port?  I see one comment about "Apple breaking the Xcode,
 which made it impossible to compile gcc13 and some Clangs" ... is that
 what the radar is commenting on?  Assuming so, can you provide specifics
 about what exactly broke there?

 Is the issue that `g95` is somehow getting pulled into the dependency
 graph when Xcode 16 is installed?  Assuming so, that probably has nothing
 to do with Xcode since Xcode isn't even being used.

 Given the build dependencies here include clang-16, I'm curious if
 MacPorts is picking up Xcode 16's clang (Apple clang version 16) and going
 down some differnet path in toolchain resolution.

 --

 FWIW, I see:

 {{{
 $ port deps R
 Full Name: R @4.4.2_0+aqua+builtin_lapack+cairo+gcc14+openmp+tcltk+x11
 Build Dependencies:   pkgconfig, gcc14, clang-18
 Library Dependencies: bzip2, curl, gnutar, gzip, icu, ld64, less,
 libiconv, libjpeg-turbo, libpng, pcre, pcre2, readline, texinfo, tiff,
 unzip, xz, zip, zlib, libgcc,
                       cairo, pango, glib2, freetype, fontconfig, gettext-
 runtime, tcl, tk, xorg-libice, xorg-libsm, xorg-libX11, xorg-libXt, libomp
 Runtime Dependencies: clang-18
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/71068#comment:20>
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