gcc9 fails to install on High Sierra Xcode10

[SebKeen]

Hi,

I just tried to install a new port, and had to update mac port to version 2.5.4, and also Xcode to version 10. The port fails to update because of dependencies related to gcc49 and message that the compiler is not supported for Xcode 9.0 and higher. Thus, I tried to port install gcc9, and this again fails because of a dependency on hdf5-18 @1.8.17+cxx+gcc49+hl.

Here is the log:

bash-3.2$ sudo port install gcc9 ---> Computing dependencies for gcc9 ---> Cleaning gcc9 ---> Scanning binaries for linking errors ---> Found 9 broken files, matching files to ports ---> Found 5 broken ports, determining rebuild order You can always run 'port rev-upgrade' again to fix errors. The following ports will be rebuilt:

hdf5-18 @1.8.17+cxx+gcc49+hl cdo @1.7.2+szip ncview @2.1.1 wgrib2 @2.0.5 grads @2.0.2

Continue? [Y/n]: y ---> hdf5-18 is replaced by hdf5 ---> Fetching distfiles for gcc49 Error: building gcc49 is not supported with Xcode 9 or greater Error: Failed to fetch gcc49: unsupported platform Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc49/gcc49/main.log for details. Error: Problem while installing gcc49 Error: rev-upgrade failed: Error rebuilding hdf5-18 Error: Follow ​https://guide.macports.org/#project.tickets to report a bug.

I hope someone can point in the right direction.

Noel