Error: Failed to build tao: command execution failed

[ClausKlein]

--->  Fetching archive for tao
--->  Attempting to fetch tao-6.5.2_0+server+ssl+universal.darwin_15.i386-x86_64.tbz2 from https://packages.macports.org/tao
--->  Attempting to fetch tao-6.5.2_0+server+ssl+universal.darwin_15.i386-x86_64.tbz2 from http://nue.de.packages.macports.org/tao
--->  Attempting to fetch tao-6.5.2_0+server+ssl+universal.darwin_15.i386-x86_64.tbz2 from http://lil.fr.packages.macports.org/tao
--->  Fetching distfiles for tao
--->  Attempting to fetch ACE+TAO-6.5.2.tar.bz2 from https://distfiles.macports.org/tao
--->  Verifying checksums for tao                                                    
--->  Extracting tao
--->  Applying patches to tao
--->  Configuring tao
--->  Building tao
Error: Failed to build tao: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_tao/tao/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
Error: Processing of port tao failed