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Errors in the 'id' calls 1140 # below are definitely unexpected, so allow the users to see them 1141 # (that is, avoid stderr redirection). 1142 am_uid=`id -u || echo unknown` 1143 am_gid=`id -g || echo unknown` 1144 AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format]) 1145 if test $am_uid -le $am_max_uid; then 1146 AC_MSG_RESULT([yes]) 1147 else 1148 AC_MSG_RESULT([no]) 1149 _am_tools=none 1150 fi 1151 AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format]) 1152 if test $am_gid -le $am_max_gid; then 1153 AC_MSG_RESULT([yes]) 1154 else 1155 AC_MSG_RESULT([no]) 1156 _am_tools=none 1157 fi], 1158 1159 [pax], 1160 [], 1161 1162 [m4_fatal([Unknown tar format])]) 1163 1164 AC_MSG_CHECKING([how to create a $1 tar archive]) 1165 1166 # Go ahead even if we have the value already cached. We do so because we 1167 # need to set the values for the 'am__tar' and 'am__untar' variables. 1168 _am_tools=${am_cv_prog_tar_$1-$_am_tools} 1169 1170 for _am_tool in $_am_tools; do 1171 case $_am_tool in 1172 gnutar) 1173 for _am_tar in tar gnutar gtar; do 1174 AM_RUN_LOG([$_am_tar --version]) && break 1175 done 1176 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"' 1177 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"' 1178 am__untar="$_am_tar -xf -" 1179 ;; 1180 plaintar) 1181 # Must skip GNU tar: if it does not support --format= it doesn't create 1182 # ustar tarball either. 1183 (tar --version) >/dev/null 2>&1 && continue 1184 am__tar='tar chf - "$$tardir"' 1185 am__tar_='tar chf - "$tardir"' 1186 am__untar='tar xf -' 1187 ;; 1188 pax) 1189 am__tar='pax -L -x $1 -w "$$tardir"' 1190 am__tar_='pax -L -x $1 -w "$tardir"' 1191 am__untar='pax -r' 1192 ;; 1193 cpio) 1194 am__tar='find "$$tardir" -print | cpio -o -H $1 -L' 1195 am__tar_='find "$tardir" -print | cpio -o -H $1 -L' 1196 am__untar='cpio -i -H $1 -d' 1197 ;; 1198 none) 1199 am__tar=false 1200 am__tar_=false 1201 am__untar=false 1202 ;; 1203 esac 1204 1205 # If the value was cached, stop now. We just wanted to have am__tar 1206 # and am__untar set. 1207 test -n "${am_cv_prog_tar_$1}" && break 1208 1209 # tar/untar a dummy directory, and stop if the command works. 1210 rm -rf conftest.dir 1211 mkdir conftest.dir 1212 echo GrepMe > conftest.dir/file 1213 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar]) 1214 rm -rf conftest.dir 1215 if test -s conftest.tar; then 1216 AM_RUN_LOG([$am__untar <conftest.tar]) 1217 AM_RUN_LOG([cat conftest.dir/file]) 1218 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break 1219 fi 1220 done 1221 rm -rf conftest.dir 1222 1223 AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool]) 1224 AC_MSG_RESULT([$am_cv_prog_tar_$1])]) 1225 1226AC_SUBST([am__tar]) 1227AC_SUBST([am__untar]) 1228]) # _AM_PROG_TAR 1229 1230
