[MacPorts] #60637: scalapack 2.1.0 +gcc10: ld: file not found: /usr/lib/system/libsystem_darwin.dylib

[MacPorts]

#60637: scalapack 2.1.0 +gcc10: ld: file not found:
/usr/lib/system/libsystem_darwin.dylib
------------------------+----------------------
  Reporter:  dstrubbe   |      Owner:  (none)
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  scalapack  |
------------------------+----------------------

Comment (by ryandesign):

 To be more precise:

 [https://build.macports.org/builders/ports-10.11_x86_64-builder/builds/116894/steps
 /install-port/logs/stdio On 10.11 with Xcode 8.2.1 we saw]:

 {{{
  ld: file not found: /usr/lib/system/libsystem_symptoms.dylib for
 architecture x86_64
 }}}

 Both Xcode 8.2.1 and the corresponding command lines tools contain only
 the 10.12 SDK. The 10.12 SDK contains
 /usr/lib/system/libsystem_symptoms.tbd but OS X 10.11 itself does not
 contain /usr/lib/system/libsystem_symptoms.dylib.

 On 10.12 with Xcode 9.2 you saw:

 {{{
  ld: file not found: /usr/lib/system/libsystem_darwin.dylib for
 architecture x86_64
 }}}

 Both Xcode 9.2 and the corresponding command line tools contain only the
 10.13 SDK. The 10.13 SDK contains /usr/lib/system/libsystem_darwin.tbd but
 macOS 10.12 itself does not contain
 /usr/lib/system/libsystem_darwin.dylib.

 This makes me wonder if something—gfortran?—is looking at the SDK to
 determine what capabilities it should use, not taking into account that
 not all of the capabilities advertised by the SDK are actually available
 on the running OS.

-- 
Ticket URL: <https://trac.macports.org/ticket/60637#comment:2>
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