version:1 :msg:main ---> Computing dependencies for gringo:info:main .:debug:main gringo has no conflicts :debug:main Searching for dependency: scons :debug:main Found Dependency: receipt exists for scons :debug:main Searching for dependency: re2c :debug:main Found Dependency: receipt exists for re2c :debug:main Searching for dependency: bison :debug:main Found Dependency: receipt exists for bison :debug:main Searching for dependency: boost :debug:main Found Dependency: receipt exists for boost :msg:main :debug:main Executing org.macports.main (gringo) :debug:main Skipping completed org.macports.archivefetch (gringo) :debug:main Skipping completed org.macports.fetch (gringo) :debug:main Skipping completed org.macports.checksum (gringo) :debug:main Skipping completed org.macports.extract (gringo) :debug:main Skipping completed org.macports.patch (gringo) :debug:main Skipping completed org.macports.configure (gringo) :debug:build build phase started at Thu Jun 4 08:51:16 CEST 2015 :notice:build ---> Building gringo :debug:build Executing org.macports.build (gringo) :debug:build port disallows a parallel build :debug:build Environment: CC_PRINT_OPTIONS='YES' CC_PRINT_OPTIONS_FILE='/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_math_gringo/gringo/work/.CC_PRINT_OPTIONS' CPATH='/opt/local/include' LIBRARY_PATH='/opt/local/lib' MACOSX_DEPLOYMENT_TARGET='10.6' :debug:build Assembled command: 'cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_math_gringo/gringo/work/gringo-4.4.0-source" && scons --build-dir=release gringo clingo' :debug:build Executing command line: cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_math_gringo/gringo/work/gringo-4.4.0-source" && scons --build-dir=release gringo clingo :info:build scons: Reading SConscript files ... :info:build Checking for bison 2.5... yes :info:build Checking for re2c... yes :info:build Checking whether the C++ compiler works... no :info:build error: no usable C++ compiler found :info:build Command failed: cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_math_gringo/gringo/work/gringo-4.4.0-source" && scons --build-dir=release gringo clingo :info:build Exit code: 1 :error:build org.macports.build for port gringo returned: command execution failed :debug:build Error code: CHILDSTATUS 96430 1 :debug:build Backtrace: command execution failed while executing "system -nice 0 $fullcmdstring" ("eval" body line 1) invoked from within "eval system $notty $nice \$fullcmdstring" invoked from within "command_exec build" (procedure "portbuild::build_main" line 8) invoked from within "portbuild::build_main org.macports.build" ("eval" body line 1) invoked from within "eval $procedure $targetname" :info:build Warning: targets not executed for gringo: org.macports.activate org.macports.build org.macports.destroot org.macports.install :notice:build Please see the log file for port gringo for details: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_ports_math_gringo/gringo/main.log