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Yes, it's still used 1158# in the wild :-( We should find a proper way to deprecate it ... 1159AC_SUBST([AMTAR], ['$${TAR-tar}']) 1160 1161# We'll loop over all known methods to create a tar archive until one works. 1162_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none' 1163 1164m4_if([$1], [v7], 1165 [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'], 1166 1167 [m4_case([$1], 1168 [ustar], 1169 [# The POSIX 1988 'ustar' format is defined with fixed-size fields. 1170 # There is notably a 21 bits limit for the UID and the GID. In fact, 1171 # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343 1172 # and bug#13588). 1173 am_max_uid=2097151 # 2^21 - 1 1174 am_max_gid=$am_max_uid 1175 # The $UID and $GID variables are not portable, so we need to resort 1176 # to the POSIX-mandated id(1) utility. Errors in the 'id' calls 1177 # below are definitely unexpected, so allow the users to see them 1178 # (that is, avoid stderr redirection). 1179 am_uid=`id -u || echo unknown` 1180 am_gid=`id -g || echo unknown` 1181 AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format]) 1182 if test $am_uid -le $am_max_uid; then 1183 AC_MSG_RESULT([yes]) 1184 else 1185 AC_MSG_RESULT([no]) 1186 _am_tools=none 1187 fi 1188 AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format]) 1189 if test $am_gid -le $am_max_gid; then 1190 AC_MSG_RESULT([yes]) 1191 else 1192 AC_MSG_RESULT([no]) 1193 _am_tools=none 1194 fi], 1195 1196 [pax], 1197 [], 1198 1199 [m4_fatal([Unknown tar format])]) 1200 1201 AC_MSG_CHECKING([how to create a $1 tar archive]) 1202 1203 # Go ahead even if we have the value already cached. We do so because we 1204 # need to set the values for the 'am__tar' and 'am__untar' variables. 1205 _am_tools=${am_cv_prog_tar_$1-$_am_tools} 1206 1207 for _am_tool in $_am_tools; do 1208 case $_am_tool in 1209 gnutar) 1210 for _am_tar in tar gnutar gtar; do 1211 AM_RUN_LOG([$_am_tar --version]) && break 1212 done 1213 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"' 1214 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"' 1215 am__untar="$_am_tar -xf -" 1216 ;; 1217 plaintar) 1218 # Must skip GNU tar: if it does not support --format= it doesn't create 1219 # ustar tarball either. 1220 (tar --version) >/dev/null 2>&1 && continue 1221 am__tar='tar chf - "$$tardir"' 1222 am__tar_='tar chf - "$tardir"' 1223 am__untar='tar xf -' 1224 ;; 1225 pax) 1226 am__tar='pax -L -x $1 -w "$$tardir"' 1227 am__tar_='pax -L -x $1 -w "$tardir"' 1228 am__untar='pax -r' 1229 ;; 1230 cpio) 1231 am__tar='find "$$tardir" -print | cpio -o -H $1 -L' 1232 am__tar_='find "$tardir" -print | cpio -o -H $1 -L' 1233 am__untar='cpio -i -H $1 -d' 1234 ;; 1235 none) 1236 am__tar=false 1237 am__tar_=false 1238 am__untar=false 1239 ;; 1240 esac 1241 1242 # If the value was cached, stop now. We just wanted to have am__tar 1243 # and am__untar set. 1244 test -n "${am_cv_prog_tar_$1}" && break 1245 1246 # tar/untar a dummy directory, and stop if the command works. 1247 rm -rf conftest.dir 1248 mkdir conftest.dir 1249 echo GrepMe > conftest.dir/file 1250 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar]) 1251 rm -rf conftest.dir 1252 if test -s conftest.tar; then 1253 AM_RUN_LOG([$am__untar <conftest.tar]) 1254 AM_RUN_LOG([cat conftest.dir/file]) 1255 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break 1256 fi 1257 done 1258 rm -rf conftest.dir 1259 1260 AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool]) 1261 AC_MSG_RESULT([$am_cv_prog_tar_$1])]) 1262 1263AC_SUBST([am__tar]) 1264AC_SUBST([am__untar]) 1265]) # _AM_PROG_TAR 1266 1267m4_include([m4/ax_append_compile_flags.m4]) 1268m4_include([m4/ax_append_flag.m4]) 1269m4_include([m4/ax_check_compile_flag.m4]) 1270m4_include([m4/ax_check_define.m4]) 1271m4_include([m4/ax_cxx_compile_stdcxx.m4]) 1272m4_include([m4/ax_pthread.m4]) 1273m4_include([m4/ax_require_defined.m4]) 1274