[MacPorts] #59083: gcc8 (gfortran) and Xcode 11 problem

[MacPorts]

#59083: gcc8 (gfortran) and Xcode 11 problem
---------------------+--------------------
 Reporter:  m214089  |      Owner:  (none)
     Type:  defect   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:  2.6.0
 Keywords:           |       Port:  gcc8
---------------------+--------------------
 gfortran does not find -lSystem anymore.

 gfortran has the following syslibroot

 {{{
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/
 }}}

 but Xcode 11 provides only

 {{{
 ls -l
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/
 }}}

 {{{
 total 0
 drwxr-xr-x  4 root  wheel  128 Aug 30 08:47 DriverKit19.0.sdk
 drwxr-xr-x  8 root  wheel  256 Aug 30 08:47 MacOSX.sdk
 lrwxr-xr-x  1 root  wheel   10 Sep 23 09:34 MacOSX10.15.sdk -> MacOSX.sdk
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/59083>
MacPorts <https://www.macports.org/>
Ports system for macOS