fi  done  if test -z "$ac_aux_dir"; then    echo "$progname: cannot find config.guess in $srcdir $srcdir/.. $srcdir/../.." 1>&2    echo "$help" 1>&2    exit 1  fi  ac_config_guess=$ac_aux_dir/config.guess  ac_config_sub=$ac_aux_dir/config.sub  # Make sure we can run config.sub.  if $SHELL $ac_config_sub sun4 >/dev/null 2>&1; then :  else    echo "$progname: cannot run $ac_config_sub" 1>&2    echo "$help" 1>&2    exit 1  fi  echo $ac_n "checking host system type""... $ac_c" 1>&6  host_alias=$host  case "$host_alias" in  "")    if host_alias=`$SHELL $ac_config_guess`; then :    else      echo "$progname: cannot guess host type; you must specify one" 1>&2      echo "$help" 1>&2      exit 1    fi ;;  esac  host=`$SHELL $ac_config_sub $host_alias`  echo "$ac_t$host" 1>&6  # Make sure the host verified.  test -z "$host" && exit 1elif test -z "$host"; then  echo "$progname: you must specify a host type if you use \`--no-verify'" 1>&2  echo "$help" 1>&2  exit 1else  host_alias=$hostfi# Transform linux* to *-*-linux-gnu*, to support old configure scripts.case "$host_os" inlinux-gnu*) ;;linux*) host=`echo $host | sed 's/^\(.*-.*-linux\)\(.*\)$/\1-gnu\2/'`esachost_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`case "$host_os" inaix3*)  # AIX sometimes has problems with the GCC collect2 program.  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then  exeext=""else  exeext="$ac_cv_exeext"fiecho "$ac_t$ac_cv_exeext" 1>&6echo $ac_n "checking for $compiler option to produce PIC... $ac_c" 1>&6pic_flag=special_shlib_compile_flags=wl=link_static_flag=no_builtin_flag=if test "$with_gcc" = yes; then  wl='-Wl,'  link_static_flag='-static'  case "$host_os" in  beos* | irix5* | irix6* | osf3* | osf4* | osf5*)    # PIC is the default for these OSes.    ;;  aix*)    # Below there is a dirty hack to force normal static linking with -ldl    # The problem is because libdl dynamically linked with both libc and    # libC (AIX C++ library), which obviously doesn't included in libraries    # list by gcc. 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