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2011-07-22dd, shred: use fdatasync only if declaredPaul Eggert
* m4/jm-macros.m4 (coreutils_MACROS): Use fdatasync only if declared. MacOS X 10.7 has an fdatasync that is not declared, and is rumored to be ineffective. (Bug#9141)
2011-07-20maint: remove a redundant call to gl_CLOCK_TIMEPádraig Brady
* m4/jm-macros.m4: Remove gl_CLOCK_TIME as it's already done by the gettime gnulib module.
2011-07-08timeout: handle signals more transparentlyPádraig Brady
* m4/jm-macros.m4: Define HAVE_SETRLIMIT. * src/timeout.c: If the child exited with a signal, raise that signal to the timeout process itself, so that callers may also see the signal status. Use setrlimit to disable core dumps for the timeout process, which would be generated by some signals.
2011-01-01maint: update all copyright year number rangesJim Meyering
Run "make update-copyright".
2010-09-18build: use gnulib's new termios moduleJim Meyering
With it, we can remove the two sole tests of HAVE_TERMIOS_H. * bootstrap.conf (gnulib_modules): Add termios. * src/ls.c: Don't test HAVE_TERMIOS_H. * src/stty.c: Likewise. * m4/jm-macros.m4 (gl_CHECK_ALL_TYPES): Remove configure-time test for termios.h.
2010-07-22fadvise: new module providing a simpler interface to posix_fadvisePádraig Brady
* bootstrap.conf: Include the new module * gl/lib/fadvise.c: Provide a simpler interface to posix_fadvise. (fadvise): Provide hint to the whole file associated with a stream. (fdadvise): Provide hint to the specific portion of a file associated with a file descriptor. * gl/lib/fadvise.h: Redefine POSIX_FADV_* to FADVISE_* enums. * gl/modules/fadvise: New file. * m4/jm-macros.m4: Remove the no longer needed posix_fadvise check. * .x-sc_program_name: Exclude test-fadvise.c from this check. * gl/tests/test-fadvise (main): New test program. * gl/modules/fadvise-testss: A new index to reference the tests. * src/sort.c (stream_open): Use the new interface. * src/dd.c (iwrite): Likewise.
2010-04-29build: remove now-duplicate use of AC_SYS_LARGEFILEJim Meyering
* m4/jm-macros.m4 (gl_CHECK_ALL_TYPES): Don't require AC_SYS_LARGEFILE, now that gnulib does it.
2010-04-29build: remove now-useless configure-time header checksJim Meyering
* m4/jm-macros.m4 (gl_CHECK_ALL_HEADERS): Don't test for headers that gnulib now provides: sys/ioctl.h, sys/time.h, sys/wait.h.
2010-04-06maint: fix a masked syntax-check violationJim Meyering
* m4/jm-macros.m4 (ARGMATCH_DIE): Use usage(EXIT_FAILURE), not usage(1). * .x-sc_prohibit_magic_number_exit: Remove *.m4 exemption that was masking the above.
2010-03-04sort: inform the system about our input access patternJoey Degges
Tell the system that we'll access input sequentially, so that we more efficiently process uncached files in a few cases: Reading from faster flash devices. E.g. 21 MB/s key: NORMAL 31.6s (26.8 user) SEQUENTIAL 27.7s WILLNEED 27.7s Processing in parallel with readahead when using a small 1M buffer: NORMAL 24.7s (21.1 user) SEQUENTIAL 22.7s WILLNEED 25.6s A small benefit when merging: NORMAL 25.0s (16.9 user) SEQUENTIAL 24.6s (16.6 user) WILLNEED 38.4s (13.1 user) Note WILLNEED is presented above for comparison to show it has some unwanted characteristics due to its synchronous prepopulation of the cache. It has a good benefit on a mechanical disk @ 80MB/s and a multicore system with competing processes: NORMAL 14.73s SEQUENTIAL 10.95s WILLNEED 05.22s However the scheduling differences causing this result are probably best explicitly managed using `nice` etc. * m4/jm-macros.m4 (coreutils_MACROS): check for posix_fadvise(). * src/sort.c (fadvise_input): A new function to apply the POSIX_FADV_SEQUENTIAL hint to an input stream. (stream_open): Call the above function for all input streams.
2010-01-25who --mesg (-T) can use a more accurate test for TTY writabilityKamil Dudka
Enabled when coreutils is configured with --with-tty-group. Based on a patch written by Piotr Gackiewicz. Details at http://bugzilla.redhat.com/454261 * src/who.c (is_tty_writable): A new function returning true if a TTY device is writable by the group. Additionally it checks the group to be the same as TTY_GROUP_NAME when compiled with --with-tty-group. * m4/jm-macros.m4: Introduce a new configure option --with-tty-group. * NEWS: Mention the change.
2010-01-01maint: update all FSF copyright year lists to include 2010Jim Meyering
Use this command: git ls-files | grep -v COPYING \ | xargs env UPDATE_COPYRIGHT_USE_INTERVALS=1 \ build-aux/update-copyright
2009-10-20maint: issue warnings for more missing optional librariesPádraig Brady
* README-hacking: Suggest to use ./configure --quiet so that any warnings are easily noticed. * m4/gmp.m4 (cu_GMP): Warn if libgmp is not available. * m4/jm-macros.m4 (coreutils_MACROS): Normalize the libcap warning. * m4/xattr.m4 (gl_FUNC_XATTR): Warn if libattr is not available.
2009-10-15build: don't let environment settings perturb buildJim Meyering
Setting the envvars, LIB_FDATASYNC, LIB_XATTR or LIB_CRYPT could cause a configure-time and/or build-time malfunction. Typically, a configure-time function-in-library test is performed via code like this: LIB_VAR= AC_SUBST([LIB_VAR]) prefix_saved_LIBS=$LIBS AC_SEARCH_LIBS([FUNC], [LIB_NAME], [test "$ac_cv_search_FUNC" = "none required" || LIB_VAR=$ac_cv_search_FUNC]) LIBS=$prefix_saved_LIBS However, in each of the files affected by this change, the LIB_VAR= initialization was omitted. Thus, when set in the environment, its value would propagate into generated Makefiles when FUNC is not found in LIB_NAME. * m4/jm-macros.m4 (coreutils_MACROS): Initialize AC_SUBST'd var * m4/lib-check.m4 (cu_LIB_CHECK): Likewise. * m4/xattr.m4 (gl_FUNC_XATTR): Likewise.
2009-10-10copy: allow symlink timestamp preservation on more systemsEric Blake
* src/copy.c (utimens_symlink): Simplify by using lutimens. * m4/jm-macros.m4 (coreutils_MACROS): Drop utimensat; gnulib does this for us. * tests/cp/preserve-slink-time: Recognize lutimes support.
2009-09-11rm: use gnulib faccessatEric Blake
* bootstrap.conf (gnulib_modules): Add faccessat. Replace strdup with strdup-posix. * m4/jm-macros.m4 (coreutils_MACROS): Revert previous change, now that gnulib does it for us. * src/remove.c (write_protected_non_symlink): Use faccessat in more situations.
2009-09-11rm: improve efficiency of rm -r (without -f) from O(N^2) to O(N)Jim Meyering
where N is the depth of the deepest hierarchy rm is processing. * src/remove.c (write_protected_non_symlink): Use faccessat to avoid O(N)-per-entry cost of calling euidaccess. * m4/jm-macros.m4 (coreutils_MACROS): Check for faccessat. * NEWS (Improvements): Mention it.
2009-09-04build: fix libcap configure flag handlingMike Frysinger
* m4/jm-macros.m4 (coreutils_MACROS): The code to handle configure-time enabling or disabling of libcap support was broken. It would treat any libcap configure option as --disable-libcap because it doesn't check $enableval at all. This change makes sure we do the sane thing: --disable-libcap -> disable and don't run any tests --enable-libcap -> run tests and fail if not found default -> run tests and warn if not found
2009-08-25global: convert indentation-TABs to spacesJim Meyering
Transformed via this shell code: t=$'\t' git ls-files \ | grep -vE '(^|/)((GNU)?[Mm]akefile|ChangeLog)|\.(am|mk)$' \ | grep -vE 'tests/pr/|help2man' \ | xargs grep -lE "^ *$t" \ | xargs perl -MText::Tabs -ni -le \ '$m=/^( *\t[ \t]*)(.*)/; print $m ? expand($1) . $2 : $_'
2009-08-04cp -pP (and e.g., -a): preserve time stamps on symlinks, tooJim Meyering
* src/copy.c (utimensat_if_possible): New function. (copy_internal): Remove variable, "preserve_metadata". Replace with "dest_is_symlink". That covers all cases but one: the one in which cp --link has created hard links to non-directories. In that case, there is no need to update attributes of the links. Use utimensat_if_possible, to preserve timestamps of symlinks. * NEWS (New features): Mention this. * tests/Makefile.am (TESTS): Add cp/preserve-slink-time. * tests/cp/preserve-slink-time: New file. * m4/jm-macros.m4 (coreutils_MACROS): Test for utimensat. Reported in http://bugzilla.redhat.com/230866
2009-08-04install runs faster again with SELinux enabledKamil Dudka
* m4/jm-macros.m4: Pull in SELinux libraries while checking for matchpathcon_init_prefix (). Emit configure warning when not found with SELinux enabled. * NEWS (Bug fixes): Mention it. The bug was introduced in coreutils-7.0 via commit 0647f3eb, 2008-06-02, "accommodate older SELinux which lacks matchpathcon_init_prefix".
2009-06-15tail: use inotify if it is availableGiuseppe Scrivano
* NEWS: Document the new feature. * m4/jm-macros.m4: Check if inotify is present. * src/tail.c (tail_forever_inotify): New function. (main): Use the inotify-based function, if possible. * tests/Makefile.am: Add new tests for tail. * tests/test-lib.sh (require_proc_pid_status_, get_process_status_): New functions. * tests/tail-2/pid: New file. * tests/tail-2/wait: New file. * tests/tail-2/tail-n0f: Refactor code into the test-lib.sh require_proc_pid_status_ function.
2009-01-21m4: don't use AC_REQUIRE([AC_C_BIGENDIAN])Jim Meyering
* m4/jm-macros.m4: Use AC_REQUIRE([gl_BIGENDIAN]) instead. This avoids a subtle problem recently documented in autoconf: http://git.sv.gnu.org/gitweb/?p=autoconf.git;a=commitdiff;h=34e2c8d5484
2009-01-01improve M4 quotingJim Meyering
* configure.ac: Add quotes. * gl/m4/mgetgroups.m4 (gl_MGETGROUPS): Likewise. * m4/boottime.m4 (GNULIB_BOOT_TIME): Likewise. * m4/check-decl.m4 (gl_CHECK_DECLS): Likewise. * m4/gmp.m4 (cu_GMP): Likewise. * m4/jm-macros.m4 (coreutils_MACROS, gl_CHECK_ALL_HEADERS): Likewise. (gl_CHECK_ALL_TYPES): Likewise. * m4/lib-check.m4 (cu_LIB_CHECK): Likewise. * m4/stat-prog.m4 (cu_PREREQ_STAT_PROG): Likewise. FYI, I first ran this command: git ls-files | grep -E '\.(m4|ac)$' | xargs perl -pi \ -e 's/(AC_[A-Z_]+\()([^[()]+?)([,)])/$1\[$2]$3/g;' \ -e 's/(AC_[A-Z_]+\(\[[^,]+?\], )([^,[()]+?)([,)])/$1\[$2]$3/g;' \ -e 's/(AC_[A-Z_]+\((?:\[[^,]+?\], ){2})([^,[()]+?)([,)])/$1\[$2]$3/g' Then I updated serial numbers and copyright dates manually. Also, I manually added two pairs of quotes in boottime.m4.
2009-01-01maint: tighten m4 AC_ quoting checkJim Meyering
* maint.mk (sc_m4_quote_check): Renamed from m4-check. Also search for AC_DEFINE and AC_DEFINE_UNQUOTED. Also search in configure.ac. * configure.ac: Quote first argument of AC_DEFINE. * jm-macros.m4 (coreutils_MACROS): Quote the first argument to AC_DEFINE.
2008-11-30m4: avoid a warning from gcc's -Wstrict-prototypesJim Meyering
* m4/jm-macros.m4 (ARGMATCH_DIE_DECL): Use proper prototype for usage.
2008-11-11jm-macros.m4: avoid syntax issue with newer autoconfEric Blake
* jm-macros.m4 (coreutils_MACROS): Make LIB_CAP assignment persistent. Signed-off-by: Eric Blake <ebb9@byu.net>
2008-08-01ls: --color now highlights files with capabilities, tooKamil Dudka
* src/ls.c: [HAVE_CAP] Include <sys/capability.h>. (has_capability): New function for capability detection. (print_color_indicator): Colorize file with capability. * m4/jm-macro.m4: New configure option: --disable-libcap. Check for libcap usability. * src/Makefile.am (dir_LDADD, ls_LDADD, ...): Append $(LIB_CAP). * src/dircolors.c: Update color lists. * src/dircolors.hin: Mention new CAPABILITY color attribute. * tests/ls/capability: Test for ls - colorize file with capability. * tests/Makefile.am (root_tests): Add ls/capability. * NEWS: Mention the change.
2008-06-15address root cause of compilation failures:Jim Meyering
The affected code wasn't even being compiled on my system, because HAVE_NL_LANGINFO was not defined. On other systems, where vasnprintf.m4 determines it needs %A or %a replacement support, it _would_ check for nl_langinfo, and expose the compilation failure. * m4/jm-macros.m4: Check for nl_langinfo, required by sort.c.
2008-06-13od: simplify long double supportEric Blake
* m4/jm-macros.m4 (gl_CHECK_ALL_TYPES): Remove obsolete check for AC_C_LONG_DOUBLE. * src/od.c (LONG_DOUBLE): Delete. (width_bytes, MAX_FP_TYPE_SIZE, decode_one_format, main): Just use 'long double' directly. (print_long_double): No longer protect by HAVE_LONG_DOUBLE.
2008-06-02accommodate older SELinux which lacks matchpathcon_init_prefixJim Meyering
* m4/jm-macros.m4: Check for matchpathcon_init_prefix. * src/install.c [!HAVE_MATCHPATHCON_INIT_PREFIX] (matchpathcon_init_prefix): Define away. * gl/lib/se-selinux.in.h (matchpathcon_init_prefix): Define. Reported by Ilya N. Golubev in <http://thread.gmane.org/gmane.comp.gnu.coreutils.bugs/13686>.
2007-11-14Enable gnulib-tool's --with-tests option.Jim Meyering
* bootstrap: After all is done, transform the generated gnulib-tests/gnulib.mk. * bootstrap.conf (gnulib_tool_option_extras): Set it here. * gnulib-tests/Makefile.am: New file. * Makefile.am (SUBDIRS): Add gnulib-tests. * configure.ac (AC_CONFIG_FILES): Add gnulib-tests/Makefile. * m4/jm-macros.m4 (coreutils_MACROS) [ARGMATCH_DIE_DECL]: Omit the "extern " prefix to "void usage ()", so that the macro string value can be used to construct a function definition in gnulib's test-argmatch.c.
2007-08-30Use PACKAGE_NAME instead of GNU_PACKAGE.Eric Blake
* src/Makefile.am (.sh, uninstall-local): Adjust all users of hand-rolled GNU_PACKAGE to instead use autoconf-provided PACKAGE_NAME. * src/basename.c (main): Likewise. * src/chroot.c (main): Likewise. * src/dirname.c (main): Likewise. * src/echo.c (main): Likewise. * src/expr.c (main): Likewise. * src/factor.c (main): Likewise. * src/groups.sh (version): Likewise. Also, reflect change in --version output due to GPLv3. * src/hostid.c (main): Likewise. * src/hostname.c (main): Likewise. * src/link.c (main): Likewise. * src/logname.c (main): Likewise. * src/nice.c (main): Likewise. * src/nohup.c (main): Likewise. * src/printenv.c (main): Likewise. * src/printf.c (main): Likewise. * src/pwd.c (main): Likewise. * src/setuidgid.c (main): Likewise. * src/sleep.c (main): Likewise. * src/system.h (case_GETOPT_VERSION_CHAR): Likewise. * src/test.c (main): Likewise. * src/true.c (main): Likewise. * src/unlink.c (main): Likewise. * src/uptime.c (main): Likewise. * src/users.c (main): Likewise. * src/whoami.c (main): Likewise. * src/yes.c (main): Likewise. * configure.ac (AC_CHECK_DECLS): No need to check strtoimax, strtoumax, since gnulib does this.
2007-07-23Update all copyright notices to use the newer form.Jim Meyering
2007-07-10Add support for enabling/disabling installation of specified programs.Jim Meyering
* NEWS: Mention new configure-time options. Mention that neither arch nor su is built/installed, by default. * m4/include-exclude-prog.m4: New file. * configure.ac: Use new macro, gl_ADD_PROG, rather than manually appending to OPTIONAL_BIN_PROGS and MAN. Move the code that adds "df" to the list of programs to build from m4/jm-macros into this file. Use gl_INCLUDE_EXCLUDE_PROG, then handle special cases: ginstall, [. (NO_INSTALL_PROGS_DEFAULT): AC_SUBST it. Used by man/Makefile.am. * man/Makefile.am (dist_man_MANS): Remove from this list all man pages corresponding to "bin" programs. Add $(MAN) instead. (optional_mans): Remove all uses. (check-x-vs-1): Adapt to work even though arch and su are typically no longer built (and neither are their .1 files). * src/Makefile.am (install_su): Rename from INSTALL_SU, now that INSTALL_SU has a different meaning. Use the new $(INSTALL_SU) value.
2007-07-10Change "version 2" to "version 3" in all copyright notices.Jim Meyering
2007-01-14Enable use of gnulib's new fchdir module.Bruno Haible
* bootstrap.conf (avoided_gnulib_modules): Avoid canonicalize-lgpl, since we use canonicalize. (gnulib_modules): Add fchdir. * m4/jm-macros.m4 (coreutils_MACROS): Remove fchdir-stub.
2006-12-12* jm-macros.m4: Remove AC_FUNC_SETVBUF_REVERSED, now that it's a no-op.Jim Meyering
2006-12-06* NEWS: Document the cp --preserve=ownership fix.Paul Eggert
* m4/jm-macros.m4 (coreutils_MACROS): Check for fchmod. * src/copy.c (fchmod_or_lchmod): New function. (copy_reg): New arg OMITTED_PERMISSIONS. All uses changed. Omit confusing and unused ", dst_mode" arg to 'open' without O_CREAT. When creating a file, use O_EXCL, so we're more likely to detect funny business by other processes. At the end, if permissions were omitted, chmod them back in. (copy_internal): If the ownership might change, omit some permissions at first, then restore them after chowning the file. * src/cp.c (make_dir_parents_private): Likewise. * src/copy.c (cached_umask): New function. * src/copy.h (cached_umask): New decl.
2006-10-12[ChangeLog]Jim Meyering
* configure.ac: Reflect s/gl_MACROS/coreutils_MACROS/ renaming. Call gl_INIT directly, rather than through the above. [m4/ChangeLog] * jm-macros.m4 (coreutils_MACROS): Rename from gl_MACROS, now that most of the gnulib macros have migrated into gnulib. Don't call gl_INIT here (now it's called from configure.ac, directly).
2006-10-07* jm-macros.m4 (gl_MACROS): Remove use of AC_CONFIG_LIBOBJ_DIR(lib).Jim Meyering
It is no longer needed, and was causing dependencies to appear in lib/lib/.deps, which provoked a "make distcheck" failure.
2006-09-29[ChangeLog]Jim Meyering
Since any system may be affected by the Darwin readdir bug, perform the extra rewinddir unconditionally. The performance impact of rewinding a directory is negligible. * src/remove.c (NEED_REWIND): Define to use CONSECUTIVE_READDIR_UNLINK_THRESHOLD unconditionally. [m4/ChangeLog] * readdir.m4: Remove file once again. * jm-macros.m4: Remove reference to gl_FUNC_READDIR.
2006-09-28* jm-macros.m4: Require the new macro.Jim Meyering
* readdir.m4 (gl_FUNC_READDIR): Rename from GL_FUNC_READDIR.
2006-09-01* m4/jm-macros.m4 (gl_MACROS): Call cu_PREREQ_STAT_PROG ratherPaul Eggert
than AC_REQUIREing, so that sys/mount.h isn't tested for after the test result. I'm not sure why this fix is needed, but it works. * m4/stat-prog.m4 (cu_PREREQ_STAT_PROG): Revamp to reflect better what stat.c actually needs. * src/stat.c: Include <stddef.h> (alignof): New macro. (HAVE_STRUCT_STATXFS_F_FSID___VAL, HAVE_STRUCT_STATXFS_F_FSID_VAL): Remove. (STRUCT_STATXFS_F_FSID_IS_INTEGER): New macro. (FSID_VAL): Remove. (print_statfs): If f_fsid isn't an integer, grab its words one at a time in little-endian order. This is a bit easier to configure and should avoid a compilation failure on MacOS reported by Bruno Haible.
2006-08-21Add a bootstrap procedure, so that the CVS version contains fewerPaul Eggert
files and we bootstrap the rest from gnulib, gettext, etc. * README-cvs: New file. * bootstrap: New file. * bootstrap.conf: New file. * .x-sc_trailing_blank: Remove config-log, .gdb-history. Add .po. * configure.ac (AC_PREREQ): Move here from m4/*.m4, for benefit of gnulib-tool. (gl_DEFAULT_POSIX2_VERSION, gl_USE_SYSTEM_EXTENSIONS, gl_PERL): (gl_IGNORE_UNUSED_LIBRARIES): Remove; now done by gnulib. (gl_EARLY): Add. (gl_MACROS): Call just after gl_EARLY, just for clarity. * src/c99-to-c98.diff: Remove patch to ls.c; no longer needed. * src/kill.c (strtoimax): Remove decl. * src/ls.c: Include "wcwidth.h" instead of rolling it ourselves. * src/wc.c: Likewise. * src/ls.c (sort_files): Rewrite to avoid need for C99-style declaration, so that we don't need to patch this file. * src/printf.c (strtoimax, strtoumax): Remove decls. * src/su.c: Include getpass.h. (getpass): remove. * src/system.h: Include mempcpy.h, stpcpy.h, strpbrk.h. Include inttypes.h unconditionally; remove decls it handles. * lib/Makefile.am: include gnulib.mk, so that we can remove most of this file. (AM_CPPFLAGS): Don't mention -I$(srcdir), since that's now done for us. (noinst_LIBRARIES, LDDADD, DEFS): Remove. (libcoreutils_a_SOURCES): Trim down greatly, just to the files that aren't in gnulib. Remove defns gnulib does for us. * m4/check-decl.m4 (gl_CHECK_DECLS): Don't include stdio.h, string.h, stdlib.h, unistd.h, sys/time.h, time.h. Use AC_CHECK_DECLS_ONCE for free, getenv, geteuid, getlogin, getuid, lseek, malloc, memchr, realloc. Don't check for getutent, memrchr, nanosleep, stpcpy, strndup, strnlen, strstr, strtoul, strtoull. (_gl_DECL_HEADERS): Remove; all uses removed. * m4/jm-macros.m4 (gl_MACROS): Move AC_PREREQ into configure.ac for the benefit of gnulib-tool. Call gl_INIT. Do not call or require macros that gnulib will handle for us. Don't check for fchmod, hasmntopt, isascii, lchown, listmntent, mempcpy, realpath, wcrtomb, tzset. (gl_CHECK_ALL_HEADERS): Don't check for sys/statvfs.h, sys/vfs.h, sys/mount.h. (gl_CHECK_ALL_TYPES): Require AC_TYPE_UNSIGNED_LONG_LONG_INT. Don't check for struct stat.st_blksize. Don't require AC_STRUCT_ST_DM_MODE, gt_TYPE_SSIZE_T, gl_AC_TYPE_UINT32_T, gl_AC_TYPE_UINTMAX_T, gl_AC_TYPE_UINTPTR_T, gl_AC_TYPE_UNSIGNED_LONG_LONG. * m4/prereq.m4 (gl_PREREQ): Require gl_FUNC_XFTS, gl_ROOT_DEV_INO. Don't require macros that gnulib does for us. * m4/stat-prog.m4 (cu_PREREQ_STAT_PROG): Don't check for sys/sysmacros.h. Don't check for statvfs. Use AC_CHECK_HEADERS_ONCE for netinet/in.h, nfs/nfs_clnt.h, nfs/vfs.h. Don't require gl_AC_TYPE_LONG_LONG, gt_HEADER_INTTYPES_H.
2006-07-17(gl_MACROS): Remove gl_AFS.Paul Eggert
2006-07-09Update from gnulib.Paul Eggert
2006-06-28(gl_CHECK_ALL_TYPES): Don't require AC_C_CONST, since it's obsolete.Paul Eggert
2006-05-24Require autoconf-2.59d, for its fixed versionJim Meyering
of AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK.
2006-04-12(gl_MACROS): Check for setgroups and sync, since theyPaul Eggert
are not in Interix.