[MacPorts] #63115: gcc11 is built for macOS 11.3 deployment target

[MacPorts]

#63115: gcc11 is built for macOS 11.3 deployment target
-----------------------+----------------------
  Reporter:  diekhans  |      Owner:  kjellpk
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.7.1
Resolution:            |   Keywords:  bigsur
      Port:  gcc11     |
-----------------------+----------------------

Comment (by diekhans):

 ah, thanks; I fooled by port provides ;-)

 with rebuild libgcc11 from source, the  "built for newer macOS version
 (11.3)" warning goes away, however the check for C linking with FORTRAN
 still fails.  It sees odd that
 this test is run with clang-mp-12 if it wants to use gcc11.

 I can try other suggestions; and can actually dig into debugging in a week
 or so.


 {{{
 configure:25995: /opt/local/bin/clang-mp-12 -o conftest -pipe -Os
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk -arch arm64
 -I/opt/local/include
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk
 -L/opt/local/lib -Wl,-headerpad_max_install_names
 -Wl,-syslibroot,/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk
 -arch arm64 conftest.c cfortran_test.o -ldl -lm   -L/opt/local/lib
 -L/opt/local/lib/gcc11/gcc/arm64-apple-darwin20/11.1.0
 -L/opt/local/lib/gcc11/gcc/arm64-apple-darwin20/11.1.0/../../.. -lgfortran
 -lm >&5
 configure:25995: $? = 0
 configure:26037: result: lower case, underscore, no extra underscore
 configure:26111: checking whether /opt/local/bin/gfortran-mp-11 appends
 underscores to external names
 configure:26127: result: yes
 configure:26139: checking whether /opt/local/bin/gfortran-mp-11 appends
 extra underscores to external names
 configure:26155: result: no
 configure:26169: checking whether mixed C/Fortran code can be run
 dyld: Library not loaded: @rpath/libgfortran.5.dylib
   Referenced from:
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_math_R/R/work/R-4.1.0/./conftest
   Reason: image not found
 configure:26233: WARNING: cannot run mixed C/Fortran code
 configure:26235: error: Maybe check LDFLAGS for paths to Fortran
 libraries?

 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/63115#comment:9>
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