upgrading or installing gmp fails with Mac OSX 10.14 Mojave

[manulcaux]

I upgraded my Mac OS to Mojave, then installed the MacPorts-2.5.4-10.14-Mojave package and tried to upgrade all my ports.

I have a failure with gmp, that none of the advices given on the web site allow to solve.

Here is the error I get :

[macp2052:~] caux% sudo port upgrade outdated
--->  Fetching distfiles for gmp
--->  Verifying checksums for gmp
--->  Extracting gmp
--->  Applying patches to gmp
--->  Configuring gmp
--->  Building gmp
Error: Failed to build gmp: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_gmp/gmp/main.log for details.
Error: Problem while installing gmp
Error: Follow https://guide.macports.org/#project.tickets to report a bug.

I attach the /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_gmp/gmp/main.log Desktop/main.log file.