Cannot install gcc9

[manulcaux]

I have to re-install gcc9 because I want to uptade my gildas package (see ticket 59347). I am on a Mac running OSX 10.14.6 and Xcode 11.3.1

As suggested in this ticket I did the following :

sudo port uninstall gcc9 sudo port -v -s install gcc9

But the gcc9 install fails with the error as seen in the main.log attached file

I cleaned gcc9 and repeated 3 times the install but always get the same error