[MacPorts] #59133: libgcc9 fails to build with Mojave and Xcode 11 latestrelease

[MacPorts]

#59133: libgcc9 fails to build with Mojave and Xcode 11 latestrelease
-----------------------+--------------------
  Reporter:  vdoublie  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.6.0
Resolution:            |   Keywords:
      Port:  libgcc9   |
-----------------------+--------------------

Comment (by thesamirsim):

 Trying to install inkscape on catalina, the installation process stops on
 libgcc and can not be installed:

 {{{
 The following dependencies will be installed:
  OpenBLAS
  gcc9
  libgcc
  libgcc9
  py27-numpy
 Continue? [Y/n]: y

 Failed to build libgcc9: command execution failed
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/59133#comment:17>
MacPorts <https://www.macports.org/>
Ports system for macOS