spot/m4/double-slash-root.m4
Alexandre Duret-Lutz f8cdaf0c12 gnulib: Upgrade and build as a libtool library.
* lib/Makefile.am lib/alloca.in.h lib/argp-ba.c lib/argp-eexst.c
lib/argp-fmtstream.c lib/argp-fmtstream.h lib/argp-fs-xinl.c
lib/argp-help.c lib/argp-namefrob.h lib/argp-parse.c lib/argp-pin.c
lib/argp-pv.c lib/argp-pvh.c lib/argp-xinl.c lib/argp.h lib/asnprintf.c
lib/basename-lgpl.c lib/dirname-lgpl.c lib/dirname.h lib/dosname.h
lib/errno.in.h lib/error.c lib/error.h lib/fcntl.in.h lib/float+.h
lib/float.c lib/float.in.h lib/gethrxtime.c lib/gethrxtime.h
lib/getopt.c lib/getopt.in.h lib/getopt1.c lib/getopt_int.h
lib/gettext.h lib/gettime.c lib/gettimeofday.c lib/intprops.h
lib/itold.c lib/lstat.c lib/malloc.c lib/memchr.c lib/mempcpy.c
lib/mkstemp.c lib/msvc-inval.c lib/msvc-inval.h lib/msvc-nothrow.c
lib/msvc-nothrow.h lib/pathmax.h lib/printf-args.c lib/printf-args.h
lib/printf-parse.c lib/printf-parse.h lib/progname.c lib/progname.h
lib/rawmemchr.c lib/size_max.h lib/sleep.c lib/stat.c lib/stdalign.in.h
lib/stdbool.in.h lib/stddef.in.h lib/stdint.in.h lib/stdio.in.h
lib/stdlib.in.h lib/strcasecmp.c lib/strchrnul.c lib/strerror-override.c
lib/strerror-override.h lib/strerror.c lib/string.in.h lib/strings.in.h
lib/stripslash.c lib/strncasecmp.c lib/strndup.c lib/strnlen.c
lib/sys_stat.in.h lib/sys_time.in.h lib/sys_types.in.h lib/sys_wait.in.h
lib/sysexits.in.h lib/tempname.c lib/tempname.h lib/time.in.h
lib/timespec.h lib/unistd.in.h lib/vasnprintf.c lib/vasnprintf.h
lib/verify.h lib/vsnprintf.c lib/wchar.in.h lib/xsize.h lib/xtime.h
m4/00gnulib.m4 m4/alloca.m4 m4/argp.m4 m4/clock_time.m4 m4/dirname.m4
m4/double-slash-root.m4 m4/errno_h.m4 m4/error.m4 m4/exponentd.m4
m4/extensions.m4 m4/extern-inline.m4 m4/fcntl-o.m4 m4/fcntl_h.m4
m4/float_h.m4 m4/gethrxtime.m4 m4/getopt.m4 m4/gettime.m4
m4/gettimeofday.m4 m4/gnulib-cache.m4 m4/gnulib-common.m4
m4/gnulib-comp.m4 m4/gnulib-tool.m4 m4/include_next.m4 m4/intmax_t.m4
m4/inttypes_h.m4 m4/largefile.m4 m4/longlong.m4 m4/lstat.m4 m4/malloc.m4
m4/math_h.m4 m4/memchr.m4 m4/mempcpy.m4 m4/mkstemp.m4 m4/mmap-anon.m4
m4/msvc-inval.m4 m4/msvc-nothrow.m4 m4/multiarch.m4 m4/nocrash.m4
m4/off_t.m4 m4/pathmax.m4 m4/printf.m4 m4/rawmemchr.m4 m4/size_max.m4
m4/sleep.m4 m4/ssize_t.m4 m4/stat.m4 m4/stdalign.m4 m4/stdbool.m4
m4/stddef_h.m4 m4/stdint.m4 m4/stdint_h.m4 m4/stdio_h.m4 m4/stdlib_h.m4
m4/strcase.m4 m4/strchrnul.m4 m4/strerror.m4 m4/string_h.m4
m4/strings_h.m4 m4/strndup.m4 m4/strnlen.m4 m4/sys_socket_h.m4
m4/sys_stat_h.m4 m4/sys_time_h.m4 m4/sys_types_h.m4 m4/sys_wait_h.m4
m4/sysexits.m4 m4/tempname.m4 m4/time_h.m4 m4/timespec.m4 m4/unistd_h.m4
m4/vasnprintf.m4 m4/vsnprintf.m4 m4/warn-on-use.m4 m4/wchar_h.m4
m4/wchar_t.m4 m4/wint_t.m4 m4/xsize.m4 tools/snippet/arg-nonnull.h
tools/snippet/c++defs.h tools/snippet/warn-on-use.h: Upgrade to
gnulib 9ceceed274f83094127f9ff0bf061293c9fe1e7f.
* m4/secure_getenv.m4, lib/secure_getenv.c, lib/unistd.c,
lib/xtime.c: New files.
* src/bin/Makefile.am: Link with the libtool library.
2013-07-29 01:14:37 +02:00

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# double-slash-root.m4 serial 4 -*- Autoconf -*-
dnl Copyright (C) 2006, 2008-2013 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_DOUBLE_SLASH_ROOT],
[
AC_REQUIRE([AC_CANONICAL_HOST])
AC_CACHE_CHECK([whether // is distinct from /], [gl_cv_double_slash_root],
[ if test x"$cross_compiling" = xyes ; then
# When cross-compiling, there is no way to tell whether // is special
# short of a list of hosts. However, the only known hosts to date
# that have a distinct // are Apollo DomainOS (too old to port to),
# Cygwin, and z/OS. If anyone knows of another system for which // has
# special semantics and is distinct from /, please report it to
# <bug-gnulib@gnu.org>.
case $host in
*-cygwin | i370-ibm-openedition)
gl_cv_double_slash_root=yes ;;
*)
# Be optimistic and assume that / and // are the same when we
# don't know.
gl_cv_double_slash_root='unknown, assuming no' ;;
esac
else
set x `ls -di / // 2>/dev/null`
if test "$[2]" = "$[4]" && wc //dev/null >/dev/null 2>&1; then
gl_cv_double_slash_root=no
else
gl_cv_double_slash_root=yes
fi
fi])
if test "$gl_cv_double_slash_root" = yes; then
AC_DEFINE([DOUBLE_SLASH_IS_DISTINCT_ROOT], [1],
[Define to 1 if // is a file system root distinct from /.])
fi
])