--->  Configuring swi-prolog
sh: line 1: cd: /opt/local/var/db/dports/build/_opt_local_var_db_dports_sources_rsync.rsync.darwinports.org_dpupdate_dports_lang_swi-prolog/work/pl-5.6.19: No such file or directory
Error: Target com.apple.configure returned: configure failure: shell command "cd "/opt/local/var/db/dports/build/_opt_local_var_db_dports_sources_rsync.rsync.darwinports.org_dpupdate_dports_lang_swi-prolog/work/pl-5.6.19" && LIBRARY_PATH=/opt/local/lib CPATH=/opt/local/include ./configure --prefix=/opt/local --prefix=/opt/local --mandir=/opt/local/share/man --with-world --enable-mt" returned error 1
Command output: sh: line 1: cd: /opt/local/var/db/dports/build/_opt_local_var_db_dports_sources_rsync.rsync.darwinports.org_dpupdate_dports_lang_swi-prolog/work/pl-5.6.19: No such file or directory

Warning: the following items did not execute (for swi-prolog): com.apple.activate com.apple.configure com.apple.build com.apple.destroot com.apple.install
Error: Status 1 encountered during processing.