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So 1034 # test for several consecutive successes. 1035 # 1036 # (We reuse conftest.ts[12] because we still want to modify existing 1037 # files, not create new ones, per above.) 1038 n=0 1039 make=${MAKE-make} 1040 until test $n -eq 3; do 1041 echo one > conftest.ts1 1042 sleep $am_try_res 1043 echo two > conftest.ts2 # ts2 should now be newer than ts1 1044 if $make -f conftest.mk | grep 'up to date' >/dev/null; then 1045 make_ok=false 1046 break # out of $n loop 1047 fi 1048 n=`expr $n + 1` 1049 done 1050 fi 1051 # 1052 if $make_ok; then 1053 # Everything we know to check worked out, so call this resolution good. 1054 am_cv_filesystem_timestamp_resolution=$am_try_res 1055 break # out of $am_try_res loop 1056 fi 1057 # Otherwise, we'll go on to check the next resolution. 1058 fi 1059done 1060rm -f conftest.ts? 1061# (end _am_filesystem_timestamp_resolution) 1062])]) 1063 1064# AM_SANITY_CHECK 1065# --------------- 1066AC_DEFUN([AM_SANITY_CHECK], 1067[AC_REQUIRE([_AM_FILESYSTEM_TIMESTAMP_RESOLUTION]) 1068# This check should not be cached, as it may vary across builds of 1069# different projects. 1070AC_MSG_CHECKING([whether build environment is sane]) 1071# Reject unsafe characters in $srcdir or the absolute working directory 1072# name. 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Must try -L first in case configure is actually a 1086# symlink; some systems play weird games with the mod time of symlinks 1087# (eg FreeBSD returns the mod time of the symlink's containing 1088# directory). 1089am_build_env_is_sane=no 1090am_has_slept=no 1091rm -f conftest.file 1092for am_try in 1 2; do 1093 echo "timestamp, slept: $am_has_slept" > conftest.file 1094 if ( 1095 set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null` 1096 if test "$[]*" = "X"; then 1097 # -L didn't work. 1098 set X `ls -t "$srcdir/configure" conftest.file` 1099 fi 1100 test "$[]2" = conftest.file 1101 ); then 1102 am_build_env_is_sane=yes 1103 break 1104 fi 1105 # Just in case. 1106 sleep "$am_cv_filesystem_timestamp_resolution" 1107 am_has_slept=yes 1108done 1109 1110AC_MSG_RESULT([$am_build_env_is_sane]) 1111if test "$am_build_env_is_sane" = no; then 1112 AC_MSG_ERROR([newly created file is older than distributed files! 1113Check your system clock]) 1114fi 1115 1116# If we didn't sleep, we still need to ensure time stamps of config.status and 1117# generated files are strictly newer. 1118am_sleep_pid= 1119AS_IF([test -e conftest.file || grep 'slept: no' conftest.file >/dev/null 2>&1],, [dnl 1120 ( sleep "$am_cv_filesystem_timestamp_resolution" ) & 1121 am_sleep_pid=$! 1122]) 1123AC_CONFIG_COMMANDS_PRE( 1124 [AC_MSG_CHECKING([that generated files are newer than configure]) 1125 if test -n "$am_sleep_pid"; then 1126 # Hide warnings about reused PIDs. 1127 wait $am_sleep_pid 2>/dev/null 1128 fi 1129 AC_MSG_RESULT([done])]) 1130rm -f conftest.file 1131]) 1132 1133# Copyright (C) 2009-2024 Free Software Foundation, Inc. 1134# 1135# This file is free software; the Free Software Foundation 1136# gives unlimited permission to copy and/or distribute it, 1137# with or without modifications, as long as this notice is preserved. 1138 1139# _AM_SILENT_RULES 1140# ---------------- 1141# Enable less verbose build rules support. 1142AC_DEFUN([_AM_SILENT_RULES], 1143[AM_DEFAULT_VERBOSITY=1 1144AC_ARG_ENABLE([silent-rules], [dnl 1145AS_HELP_STRING( 1146 [--enable-silent-rules], 1147 [less verbose build output (undo: "make V=1")]) 1148AS_HELP_STRING( 1149 [--disable-silent-rules], 1150 [verbose build output (undo: "make V=0")])dnl 1151]) 1152dnl 1153dnl A few 'make' implementations (e.g., NonStop OS and NextStep) 1154dnl do not support nested variable expansions. 1155dnl See automake bug#9928 and bug#10237. 1156am_make=${MAKE-make} 1157AC_CACHE_CHECK([whether $am_make supports nested variables], 1158 [am_cv_make_support_nested_variables], 1159 [if AS_ECHO([['TRUE=$(BAR$(V)) 1160BAR0=false 1161BAR1=true 1162V=1 1163am__doit: 1164 @$(TRUE) 1165.PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then 1166 am_cv_make_support_nested_variables=yes 1167else 1168 am_cv_make_support_nested_variables=no 1169fi]) 1170AC_SUBST([AM_V])dnl 1171AM_SUBST_NOTMAKE([AM_V])dnl 1172AC_SUBST([AM_DEFAULT_V])dnl 1173AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl 1174AC_SUBST([AM_DEFAULT_VERBOSITY])dnl 1175AM_BACKSLASH='\' 1176AC_SUBST([AM_BACKSLASH])dnl 1177_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl 1178dnl Delay evaluation of AM_DEFAULT_VERBOSITY to the end to allow multiple calls 1179dnl to AM_SILENT_RULES to change the default value. 1180AC_CONFIG_COMMANDS_PRE([dnl 1181case $enable_silent_rules in @%:@ ((( 1182 yes) AM_DEFAULT_VERBOSITY=0;; 1183 no) AM_DEFAULT_VERBOSITY=1;; 1184esac 1185if test $am_cv_make_support_nested_variables = yes; then 1186 dnl Using '$V' instead of '$(V)' breaks IRIX make. 1187 AM_V='$(V)' 1188 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)' 1189else 1190 AM_V=$AM_DEFAULT_VERBOSITY 1191 AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY 1192fi 1193])dnl 1194]) 1195 1196# AM_SILENT_RULES([DEFAULT]) 1197# -------------------------- 1198# Set the default verbosity level to DEFAULT ("yes" being less verbose, "no" or 1199# empty being verbose). 1200AC_DEFUN([AM_SILENT_RULES], 1201[AC_REQUIRE([_AM_SILENT_RULES]) 1202AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1])]) 1203 1204# Copyright (C) 2001-2024 Free Software Foundation, Inc. 1205# 1206# This file is free software; the Free Software Foundation 1207# gives unlimited permission to copy and/or distribute it, 1208# with or without modifications, as long as this notice is preserved. 1209 1210# AM_PROG_INSTALL_STRIP 1211# --------------------- 1212# One issue with vendor 'install' (even GNU) is that you can't 1213# specify the program used to strip binaries. This is especially 1214# annoying in cross-compiling environments, where the build's strip 1215# is unlikely to handle the host's binaries. 1216# Fortunately install-sh will honor a STRIPPROG variable, so we 1217# always use install-sh in "make install-strip", and initialize 1218# STRIPPROG with the value of the STRIP variable (set by the user). 1219AC_DEFUN([AM_PROG_INSTALL_STRIP], 1220[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl 1221# Installed binaries are usually stripped using 'strip' when the user 1222# run "make install-strip". However 'strip' might not be the right 1223# tool to use in cross-compilation environments, therefore Automake 1224# will honor the 'STRIP' environment variable to overrule this program. 1225dnl Don't test for $cross_compiling = yes, because it might be 'maybe'. 1226if test "$cross_compiling" != no; then 1227 AC_CHECK_TOOL([STRIP], [strip], :) 1228fi 1229INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s" 1230AC_SUBST([INSTALL_STRIP_PROGRAM])]) 1231 1232# Copyright (C) 2006-2024 Free Software Foundation, Inc. 1233# 1234# This file is free software; the Free Software Foundation 1235# gives unlimited permission to copy and/or distribute it, 1236# with or without modifications, as long as this notice is preserved. 1237 1238# _AM_SUBST_NOTMAKE(VARIABLE) 1239# --------------------------- 1240# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in. 1241# This macro is traced by Automake. 1242AC_DEFUN([_AM_SUBST_NOTMAKE]) 1243 1244# AM_SUBST_NOTMAKE(VARIABLE) 1245# -------------------------- 1246# Public sister of _AM_SUBST_NOTMAKE. 1247AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)]) 1248 1249# Check how to create a tarball. -*- Autoconf -*- 1250 1251# Copyright (C) 2004-2024 Free Software Foundation, Inc. 1252# 1253# This file is free software; the Free Software Foundation 1254# gives unlimited permission to copy and/or distribute it, 1255# with or without modifications, as long as this notice is preserved. 1256 1257# _AM_PROG_TAR(FORMAT) 1258# -------------------- 1259# Check how to create a tarball in format FORMAT. 1260# FORMAT should be one of 'v7', 'ustar', or 'pax'. 1261# 1262# Substitute a variable $(am__tar) that is a command 1263# writing to stdout a FORMAT-tarball containing the directory 1264# $tardir. 1265# tardir=directory && $(am__tar) > result.tar 1266# 1267# Substitute a variable $(am__untar) that extract such 1268# a tarball read from stdin. 1269# $(am__untar) < result.tar 1270# 1271AC_DEFUN([_AM_PROG_TAR], 1272[# Always define AMTAR for backward compatibility. Yes, it's still used 1273# in the wild :-( We should find a proper way to deprecate it ... 1274AC_SUBST([AMTAR], ['$${TAR-tar}']) 1275 1276# We'll loop over all known methods to create a tar archive until one works. 1277_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none' 1278 1279m4_if([$1], [v7], 1280 [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'], 1281 1282 [m4_case([$1], 1283 [ustar], 1284 [# The POSIX 1988 'ustar' format is defined with fixed-size fields. 1285 # There is notably a 21 bits limit for the UID and the GID. In fact, 1286 # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343 1287 # and bug#13588). 1288 am_max_uid=2097151 # 2^21 - 1 1289 am_max_gid=$am_max_uid 1290 # The $UID and $GID variables are not portable, so we need to resort 1291 # to the POSIX-mandated id(1) utility. Errors in the 'id' calls 1292 # below are definitely unexpected, so allow the users to see them 1293 # (that is, avoid stderr redirection). 1294 am_uid=`id -u || echo unknown` 1295 am_gid=`id -g || echo unknown` 1296 AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format]) 1297 if test x$am_uid = xunknown; then 1298 AC_MSG_WARN([ancient id detected; assuming current UID is ok, but dist-ustar might not work]) 1299 elif test $am_uid -le $am_max_uid; then 1300 AC_MSG_RESULT([yes]) 1301 else 1302 AC_MSG_RESULT([no]) 1303 _am_tools=none 1304 fi 1305 AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format]) 1306 if test x$gm_gid = xunknown; then 1307 AC_MSG_WARN([ancient id detected; assuming current GID is ok, but dist-ustar might not work]) 1308 elif test $am_gid -le $am_max_gid; then 1309 AC_MSG_RESULT([yes]) 1310 else 1311 AC_MSG_RESULT([no]) 1312 _am_tools=none 1313 fi], 1314 1315 [pax], 1316 [], 1317 1318 [m4_fatal([Unknown tar format])]) 1319 1320 AC_MSG_CHECKING([how to create a $1 tar archive]) 1321 1322 # Go ahead even if we have the value already cached. We do so because we 1323 # need to set the values for the 'am__tar' and 'am__untar' variables. 1324 _am_tools=${am_cv_prog_tar_$1-$_am_tools} 1325 1326 for _am_tool in $_am_tools; do 1327 case $_am_tool in 1328 gnutar) 1329 for _am_tar in tar gnutar gtar; do 1330 AM_RUN_LOG([$_am_tar --version]) && break 1331 done 1332 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"' 1333 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"' 1334 am__untar="$_am_tar -xf -" 1335 ;; 1336 plaintar) 1337 # Must skip GNU tar: if it does not support --format= it doesn't create 1338 # ustar tarball either. 1339 (tar --version) >/dev/null 2>&1 && continue 1340 am__tar='tar chf - "$$tardir"' 1341 am__tar_='tar chf - "$tardir"' 1342 am__untar='tar xf -' 1343 ;; 1344 pax) 1345 am__tar='pax -L -x $1 -w "$$tardir"' 1346 am__tar_='pax -L -x $1 -w "$tardir"' 1347 am__untar='pax -r' 1348 ;; 1349 cpio) 1350 am__tar='find "$$tardir" -print | cpio -o -H $1 -L' 1351 am__tar_='find "$tardir" -print | cpio -o -H $1 -L' 1352 am__untar='cpio -i -H $1 -d' 1353 ;; 1354 none) 1355 am__tar=false 1356 am__tar_=false 1357 am__untar=false 1358 ;; 1359 esac 1360 1361 # If the value was cached, stop now. We just wanted to have am__tar 1362 # and am__untar set. 1363 test -n "${am_cv_prog_tar_$1}" && break 1364 1365 # tar/untar a dummy directory, and stop if the command works. 1366 rm -rf conftest.dir 1367 mkdir conftest.dir 1368 echo GrepMe > conftest.dir/file 1369 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar]) 1370 rm -rf conftest.dir 1371 if test -s conftest.tar; then 1372 AM_RUN_LOG([$am__untar <conftest.tar]) 1373 AM_RUN_LOG([cat conftest.dir/file]) 1374 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break 1375 fi 1376 done 1377 rm -rf conftest.dir 1378 1379 AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool]) 1380 AC_MSG_RESULT([$am_cv_prog_tar_$1])]) 1381 1382AC_SUBST([am__tar]) 1383AC_SUBST([am__untar]) 1384]) # _AM_PROG_TAR 1385 1386# Copyright (C) 2022-2024 Free Software Foundation, Inc. 1387# 1388# This file is free software; the Free Software Foundation 1389# gives unlimited permission to copy and/or distribute it, 1390# with or without modifications, as long as this notice is preserved. 1391 1392# _AM_PROG_XARGS_N 1393# ---------------- 1394# Check whether 'xargs -n' works. 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