$ sudo port install gnutar ---> Configuring gnutar Error: Target org.macports.configure returned: configure failure: shell command " cd "/opt/local/var/macports/build/ _opt_local_var_macports_sources_rsync.macports.org_release_ports_archive rs_gnutar/work/tar-1.19" && ./configure --prefix=/opt/local --program- prefix=gnu --infodir=/opt/local/share/info " returned error 1 Command output: checking for ftruncate... yes checking for gettimeofday... yes checking for nanotime... no checking for alarm... yes checking for lchmod... no checking for fdopendir... no checking for mbsinit... yes checking for mbrtowc... yes checking for wcrtomb... yes checking for wcscoll... yes checking for setenv... yes checking for sleep... yes checking for strerror... yes checking for lstat... yes checking for pipe... yes checking for futimes... yes checking for futimesat... no checking for vasnprintf... no checking for iswcntrl... yes checking for wcwidth... yes checking for mkfifo... yes checking for setlocale... yes checking for d_ino member in directory struct... yes checking whether system is Windows or MSDOS... no checking for long file names... yes checking whether canonicalize_file_name is declared... no checking for unistd.h... (cached) yes checking for working chown... yes checking whether chown(2) dereferences symlinks... yes configure: error: cannot run /bin/sh build-aux/config.sub Error: Status 1 encountered during processing. $