Rename configure.in to configure.ac, the current autoconf standard.

1 files changed, 1033 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
new file mode 100644
index 00000000..9de88d15
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,1033 @@
+dnl Process this file with autoconf to produce a configure script.
+
+AC_INIT()
+AC_CONFIG_SRCDIR([byteorder.h])
+AC_CONFIG_HEADER(config.h)
+AC_PREREQ(2.59)
+
+RSYNC_VERSION=3.1.0dev
+AC_SUBST(RSYNC_VERSION)
+AC_MSG_NOTICE([Configuring rsync $RSYNC_VERSION])
+
+AC_DEFINE_UNQUOTED(RSYNC_VERSION, ["$RSYNC_VERSION"], [rsync release version])
+
+LDFLAGS=${LDFLAGS-""}
+
+AC_CANONICAL_HOST
+
+# We must decide this before testing the compiler.
+
+# Please allow this to default to yes, so that your users have more
+# chance of getting a useful stack trace if problems occur.
+
+AC_MSG_CHECKING([whether to include debugging symbols])
+AC_ARG_ENABLE(debug,
+	AC_HELP_STRING([--disable-debug],
+		[disable debugging symbols and features]))
+
+if test x"$enable_debug" = x"no"; then
+    AC_MSG_RESULT(no)
+    ac_cv_prog_cc_g=no
+else
+    AC_MSG_RESULT([yes])
+    dnl AC_DEFINE(DEBUG, 1, [Define to turn on debugging code that may slow normal operation])
+    # leave ac_cv_prog_cc_g alone; AC_PROG_CC will try to include -g if it can
+fi
+
+dnl Checks for programs.
+AC_PROG_CC
+AC_PROG_CPP
+AC_PROG_EGREP
+AC_PROG_INSTALL
+AC_PROG_CC_STDC
+AC_SUBST(SHELL)
+
+AC_DEFINE([_GNU_SOURCE], 1,
+          [Define _GNU_SOURCE so that we get all necessary prototypes])
+
+if test x"$ac_cv_prog_cc_stdc" = x"no"; then
+	AC_MSG_WARN([rsync requires an ANSI C compiler and you don't seem to have one])
+fi
+
+AC_ARG_ENABLE(profile,
+	AC_HELP_STRING([--enable-profile],
+		[turn on CPU profiling]))
+if test x"$enable_profile" = x"yes"; then
+	CFLAGS="$CFLAGS -pg"
+fi
+
+
+# Specifically, this turns on panic_action handling.
+AC_ARG_ENABLE(maintainer-mode,
+	AC_HELP_STRING([--enable-maintainer-mode],
+		[turn on extra debug features]))
+if test x"$enable_maintainer_mode" = x"yes"; then
+	CFLAGS="$CFLAGS -DMAINTAINER_MODE"
+fi
+
+
+# This is needed for our included version of popt.  Kind of silly, but
+# I don't want our version too far out of sync.
+CFLAGS="$CFLAGS -DHAVE_CONFIG_H"
+
+# If GCC, turn on warnings.
+if test x"$GCC" = x"yes"; then
+	CFLAGS="$CFLAGS -Wall -W"
+fi
+
+AC_ARG_WITH(included-popt,
+        AC_HELP_STRING([--with-included-popt], [use bundled popt library, not from system]))
+
+AC_ARG_WITH(protected-args,
+        AC_HELP_STRING([--with-protected-args], [make --protected-args option the default]))
+if test x"$with_protected_args" = x"yes"; then
+	AC_DEFINE_UNQUOTED(RSYNC_USE_PROTECTED_ARGS, 1, [Define to 1 if --protected-args should be the default])
+fi
+
+AC_ARG_WITH(rsync-path,
+	AC_HELP_STRING([--with-rsync-path=PATH], [set default --rsync-path to PATH (default: rsync)]),
+	[ RSYNC_PATH="$with_rsync_path" ],
+	[ RSYNC_PATH="rsync" ])
+
+AC_DEFINE_UNQUOTED(RSYNC_PATH, "$RSYNC_PATH", [location of rsync on remote machine])
+
+AC_ARG_WITH(rsyncd-conf,
+	AC_HELP_STRING([--with-rsyncd-conf=PATH], [set configuration file for rsync server to PATH (default: /etc/rsyncd.conf)]),
+	[ if test ! -z "$with_rsyncd_conf" ; then
+		case $with_rsyncd_conf in
+			yes|no)
+				RSYNCD_SYSCONF="/etc/rsyncd.conf"
+				;;
+			/*)
+				RSYNCD_SYSCONF="$with_rsyncd_conf"
+				;;
+			*)
+                                AC_MSG_ERROR(You must specify an absolute path to --with-rsyncd-conf=PATH)
+				;;
+		esac
+	else
+		RSYNCD_SYSCONF="/etc/rsyncd.conf"
+	fi ],
+	[ RSYNCD_SYSCONF="/etc/rsyncd.conf" ])
+
+AC_DEFINE_UNQUOTED(RSYNCD_SYSCONF, "$RSYNCD_SYSCONF", [location of configuration file for rsync server])
+
+AC_ARG_WITH(rsh,
+	AC_HELP_STRING([--with-rsh=CMD], [set remote shell command to CMD (default: ssh)]))
+
+AC_CHECK_PROG(HAVE_REMSH, remsh, 1, 0)
+if test x$HAVE_REMSH = x1; then
+	AC_DEFINE(HAVE_REMSH, 1, [Define to 1 if remote shell is remsh, not rsh])
+fi
+
+if test x"$with_rsh" != x; then
+	RSYNC_RSH="$with_rsh"
+else
+	RSYNC_RSH="ssh"
+fi
+AC_DEFINE_UNQUOTED(RSYNC_RSH, "$RSYNC_RSH", [default -e command])
+
+AC_CHECK_PROG(HAVE_YODL2MAN, yodl2man, 1, 0)
+if test x$HAVE_YODL2MAN = x1; then
+    MAKE_MAN=man
+fi
+
+AC_ARG_WITH(nobody-group,
+    AC_HELP_STRING([--with-nobody-group=GROUP],
+		   [set the default unprivileged group (default nobody or nogroup)]),
+    [ NOBODY_GROUP="$with_nobody_group" ])
+
+if test x"$with_nobody_group" = x; then
+    AC_MSG_CHECKING([the group for user "nobody"])
+    if grep '^nobody:' /etc/group >/dev/null 2>&1; then
+	NOBODY_GROUP=nobody
+    elif grep '^nogroup:' /etc/group >/dev/null 2>&1; then
+	NOBODY_GROUP=nogroup
+    else
+	NOBODY_GROUP=nobody # test for others?
+    fi
+    AC_MSG_RESULT($NOBODY_GROUP)
+fi
+
+AC_DEFINE_UNQUOTED(NOBODY_USER, "nobody", [unprivileged user--e.g. nobody])
+AC_DEFINE_UNQUOTED(NOBODY_GROUP, "$NOBODY_GROUP", [unprivileged group for unprivileged user])
+
+# arrgh. libc in some old debian version screwed up the largefile
+# stuff, getting byte range locking wrong
+AC_CACHE_CHECK([for broken largefile support],rsync_cv_HAVE_BROKEN_LARGEFILE,[
+AC_TRY_RUN([
+#define _FILE_OFFSET_BITS 64
+#include <stdio.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+int main(void)
+{
+	struct flock lock;
+	int status;
+	char tpl[32] = "/tmp/locktest.XXXXXX";
+	int fd = mkstemp(tpl);
+	if (fd < 0) {
+		strcpy(tpl, "conftest.dat");
+		fd = open(tpl, O_CREAT|O_RDWR, 0600);
+	}
+
+	lock.l_type = F_WRLCK;
+	lock.l_whence = SEEK_SET;
+	lock.l_start = 0;
+	lock.l_len = 1;
+	lock.l_pid = 0;
+	fcntl(fd,F_SETLK,&lock);
+	if (fork() == 0) {
+		lock.l_start = 1;
+		_exit(fcntl(fd,F_SETLK,&lock) == 0);
+	}
+	wait(&status);
+	unlink(tpl);
+	exit(WEXITSTATUS(status));
+}
+],
+rsync_cv_HAVE_BROKEN_LARGEFILE=yes,rsync_cv_HAVE_BROKEN_LARGEFILE=no,rsync_cv_HAVE_BROKEN_LARGEFILE=cross)])
+if test x"$rsync_cv_HAVE_BROKEN_LARGEFILE" != x"yes"; then
+   AC_SYS_LARGEFILE
+fi
+
+ipv6type=unknown
+ipv6lib=none
+ipv6trylibc=yes
+
+AC_ARG_ENABLE(ipv6,
+	AC_HELP_STRING([--disable-ipv6],
+		[don't even try to use IPv6]))
+if test x"$enable_ipv6" != x"no"; then
+	AC_MSG_CHECKING([ipv6 stack type])
+	for i in inria kame linux-glibc linux-inet6 solaris toshiba v6d zeta cygwin; do
+		case $i in
+		inria)
+			# http://www.kame.net/
+			AC_EGREP_CPP(yes, [
+#include <netinet/in.h>
+#ifdef IPV6_INRIA_VERSION
+yes
+#endif],
+				[ipv6type=$i;
+				AC_DEFINE(INET6, 1, [true if you have IPv6])
+				])
+			;;
+		kame)
+			# http://www.kame.net/
+			AC_EGREP_CPP(yes, [
+#include <netinet/in.h>
+#ifdef __KAME__
+yes
+#endif],
+				[ipv6type=$i;
+				AC_DEFINE(INET6, 1, [true if you have IPv6])])
+			;;
+		linux-glibc)
+			# http://www.v6.linux.or.jp/
+			AC_EGREP_CPP(yes, [
+#include <features.h>
+#if defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
+yes
+#endif],
+				[ipv6type=$i;
+AC_DEFINE(INET6, 1, [true if you have IPv6])])
+			;;
+		linux-inet6)
+			# http://www.v6.linux.or.jp/
+			if test -d /usr/inet6 -o -f /usr/inet6/lib/libinet6.a; then
+				ipv6type=$i
+				ipv6lib=inet6
+				ipv6libdir=/usr/inet6/lib
+				ipv6trylibc=yes;
+				AC_DEFINE(INET6, 1, [true if you have IPv6])
+				CFLAGS="-I/usr/inet6/include $CFLAGS"
+			fi
+			;;
+		solaris)
+			# http://www.sun.com
+			AC_EGREP_CPP(yes, [
+#include <netinet/ip6.h>
+#ifdef __sun
+yes
+#endif],
+				[ipv6type=$i;
+				AC_DEFINE(INET6, 1, [true if you have IPv6])])
+			;;
+		toshiba)
+			AC_EGREP_CPP(yes, [
+#include <sys/param.h>
+#ifdef _TOSHIBA_INET6
+yes
+#endif],
+				[ipv6type=$i;
+				ipv6lib=inet6;
+				ipv6libdir=/usr/local/v6/lib;
+				AC_DEFINE(INET6, 1, [true if you have IPv6])])
+			;;
+		v6d)
+			AC_EGREP_CPP(yes, [
+#include </usr/local/v6/include/sys/v6config.h>
+#ifdef __V6D__
+yes
+#endif],
+				[ipv6type=$i;
+				ipv6lib=v6;
+				ipv6libdir=/usr/local/v6/lib;
+				AC_DEFINE(INET6, 1, [true if you have IPv6])])
+			;;
+		zeta)
+			AC_EGREP_CPP(yes, [
+#include <sys/param.h>
+#ifdef _ZETA_MINAMI_INET6
+yes
+#endif],
+				[ipv6type=$i;
+				ipv6lib=inet6;
+				ipv6libdir=/usr/local/v6/lib;
+				AC_DEFINE(INET6, 1, [true if you have IPv6])])
+			;;
+		cygwin)
+			AC_EGREP_CPP(yes, [
+#include <netinet/in.h>
+#ifdef _CYGWIN_IN6_H
+yes
+#endif],
+				[ipv6type=$i;
+				AC_DEFINE(INET6, 1, [true if you have IPv6])])
+			;;
+		esac
+		if test "$ipv6type" != "unknown"; then
+			break
+		fi
+	done
+	AC_MSG_RESULT($ipv6type)
+
+	AC_SEARCH_LIBS(getaddrinfo, inet6)
+fi
+
+dnl Do you want to disable use of locale functions
+AC_ARG_ENABLE([locale],
+	AC_HELP_STRING([--disable-locale],
+		[disable locale features]))
+AH_TEMPLATE([CONFIG_LOCALE],
+[Undefine if you don't want locale features.  By default this is defined.])
+if test x"$enable_locale" != x"no"; then
+	AC_DEFINE(CONFIG_LOCALE)
+fi
+
+AC_MSG_CHECKING([whether to call shutdown on all sockets])
+case $host_os in
+	*cygwin* ) AC_MSG_RESULT(yes)
+                   AC_DEFINE(SHUTDOWN_ALL_SOCKETS, 1,
+			    [Define to 1 if sockets need to be shutdown])
+		   ;;
+	       * ) AC_MSG_RESULT(no);;
+esac
+
+AC_C_BIGENDIAN
+AC_HEADER_DIRENT
+AC_HEADER_TIME
+AC_HEADER_SYS_WAIT
+AC_CHECK_HEADERS(sys/fcntl.h sys/select.h fcntl.h sys/time.h sys/unistd.h \
+    unistd.h utime.h grp.h compat.h sys/param.h ctype.h sys/wait.h \
+    sys/ioctl.h sys/filio.h string.h stdlib.h sys/socket.h sys/mode.h \
+    sys/un.h sys/attr.h mcheck.h arpa/inet.h arpa/nameser.h locale.h \
+    netdb.h malloc.h float.h limits.h iconv.h libcharset.h langinfo.h \
+    sys/acl.h acl/libacl.h attr/xattr.h sys/xattr.h sys/extattr.h \
+    popt.h popt/popt.h)
+AC_HEADER_MAJOR
+
+AC_CACHE_CHECK([if makedev takes 3 args],rsync_cv_MAKEDEV_TAKES_3_ARGS,[
+AC_TRY_RUN([
+#include <sys/types.h>
+#ifdef MAJOR_IN_MKDEV
+#include <sys/mkdev.h>
+# if !defined makedev && (defined mkdev || defined _WIN32 || defined __WIN32__)
+#  define makedev mkdev
+# endif
+#elif defined MAJOR_IN_SYSMACROS
+#include <sys/sysmacros.h>
+#endif
+
+int main(void)
+{
+	dev_t dev = makedev(0, 5, 7);
+	if (major(dev) != 5 || minor(dev) != 7)
+		exit(1);
+	return 0;
+}
+],
+rsync_cv_MAKEDEV_TAKES_3_ARGS=yes,rsync_cv_MAKEDEV_TAKES_3_ARGS=no,rsync_cv_MAKEDEV_TAKES_3_ARGS=no)])
+if test x"$rsync_cv_MAKEDEV_TAKES_3_ARGS" = x"yes"; then
+   AC_DEFINE(MAKEDEV_TAKES_3_ARGS, 1, [Define to 1 if makedev() takes 3 args])
+fi
+
+AC_CHECK_SIZEOF(int)
+AC_CHECK_SIZEOF(long)
+AC_CHECK_SIZEOF(long long)
+AC_CHECK_SIZEOF(short)
+AC_CHECK_SIZEOF(int16_t)
+AC_CHECK_SIZEOF(uint16_t)
+AC_CHECK_SIZEOF(int32_t)
+AC_CHECK_SIZEOF(uint32_t)
+AC_CHECK_SIZEOF(int64_t)
+AC_CHECK_SIZEOF(off_t)
+AC_CHECK_SIZEOF(off64_t)
+AC_CHECK_SIZEOF(time_t)
+
+AC_C_INLINE
+AC_C_LONG_DOUBLE
+
+AC_TYPE_SIGNAL
+AC_TYPE_UID_T
+AC_CHECK_TYPES([mode_t,off_t,size_t,pid_t,id_t])
+AC_TYPE_GETGROUPS
+AC_CHECK_MEMBERS([struct stat.st_rdev,
+		  struct stat.st_mtimensec,
+		  struct stat.st_mtim.tv_nsec],,,[
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif])
+
+TYPE_SOCKLEN_T
+
+AC_CACHE_CHECK([for errno in errno.h],rsync_cv_errno, [
+    AC_TRY_COMPILE([#include <errno.h>],[int i = errno],
+	rsync_cv_errno=yes,rsync_cv_have_errno_decl=no)])
+if test x"$rsync_cv_errno" = x"yes"; then
+   AC_DEFINE(HAVE_ERRNO_DECL, 1, [Define to 1 if errno is declared in errno.h])
+fi
+
+# The following test taken from the cvs sources
+# If we can't find connect, try looking in -lsocket, -lnsl, and -linet.
+# These need checks to be before checks for any other functions that
+#    might be in the same libraries.
+# The Irix 5 libc.so has connect and gethostbyname, but Irix 5 also has
+# libsocket.so which has a bad implementation of gethostbyname (it
+# only looks in /etc/hosts), so we only look for -lsocket if we need
+# it.
+AC_CHECK_FUNCS(connect)
+if test x"$ac_cv_func_connect" = x"no"; then
+    case "$LIBS" in
+    *-lnsl*) ;;
+    *) AC_CHECK_LIB(nsl_s, printf) ;;
+    esac
+    case "$LIBS" in
+    *-lnsl*) ;;
+    *) AC_CHECK_LIB(nsl, printf) ;;
+    esac
+    case "$LIBS" in
+    *-lsocket*) ;;
+    *) AC_CHECK_LIB(socket, connect) ;;
+    esac
+    case "$LIBS" in
+    *-linet*) ;;
+    *) AC_CHECK_LIB(inet, connect) ;;
+    esac
+    dnl We can't just call AC_CHECK_FUNCS(connect) here, because the value
+    dnl has been cached.
+    if test x"$ac_cv_lib_socket_connect" = x"yes" ||
+       test x"$ac_cv_lib_inet_connect" = x"yes"; then
+        # ac_cv_func_connect=yes
+        # don't!  it would cause AC_CHECK_FUNC to succeed next time configure is run
+        AC_DEFINE(HAVE_CONNECT, 1, [Define to 1 if you have the "connect" function])
+    fi
+fi
+
+AC_SEARCH_LIBS(inet_ntop, resolv)
+
+# Solaris and HP-UX weirdness:
+# Search for libiconv_open (not iconv_open) to discover if -liconv is needed!
+AC_SEARCH_LIBS(libiconv_open, iconv)
+
+AC_MSG_CHECKING([for iconv declaration])
+AC_CACHE_VAL(am_cv_proto_iconv, [
+    AC_TRY_COMPILE([
+#include <stdlib.h>
+#include <iconv.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+#if defined(__STDC__) || defined(__cplusplus)
+size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
+#else
+size_t iconv();
+#endif
+], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
+      am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
+    am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
+AC_MSG_RESULT([$]{ac_t:-
+         }[$]am_cv_proto_iconv)
+AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
+		   [Define as const if the declaration of iconv() needs const.])
+
+dnl AC_MSG_NOTICE([Looking in libraries: $LIBS])
+
+AC_CHECK_FUNCS(inet_ntop, , [AC_LIBOBJ(lib/inet_ntop)])
+AC_CHECK_FUNCS(inet_pton, , [AC_LIBOBJ(lib/inet_pton)])
+
+AC_HAVE_TYPE([struct addrinfo], [#include <netdb.h>])
+AC_HAVE_TYPE([struct sockaddr_storage], [#include <sys/types.h>
+#include <sys/socket.h>])
+
+# Irix 6.5 has getaddrinfo but not the corresponding defines, so use
+#   builtin getaddrinfo if one of the defines don't exist
+AC_CACHE_CHECK([whether defines needed by getaddrinfo exist],
+               rsync_cv_HAVE_GETADDR_DEFINES,[
+			AC_EGREP_CPP(yes, [
+			#include <sys/types.h>
+			#include <sys/socket.h>
+			#include <netdb.h>
+			#ifdef AI_PASSIVE
+			yes
+			#endif],
+			rsync_cv_HAVE_GETADDR_DEFINES=yes,
+			rsync_cv_HAVE_GETADDR_DEFINES=no)])
+if test x"$rsync_cv_HAVE_GETADDR_DEFINES" = x"yes" -a x"$ac_cv_type_struct_addrinfo" = x"yes"; then
+	# Tru64 UNIX has getaddrinfo() but has it renamed in libc as
+	# something else so we must include <netdb.h> to get the
+	# redefinition.
+	AC_CHECK_FUNCS(getaddrinfo, ,
+		[AC_MSG_CHECKING([for getaddrinfo by including <netdb.h>])
+		AC_TRY_LINK([#include <sys/types.h>
+		#include <sys/socket.h>
+		#include <netdb.h>],[getaddrinfo(NULL, NULL, NULL, NULL);],
+			[AC_MSG_RESULT([yes])
+			AC_DEFINE(HAVE_GETADDRINFO, 1,
+				[Define to 1 if you have the "getaddrinfo" function and required types.])],
+			[AC_MSG_RESULT([no])
+			AC_LIBOBJ(lib/getaddrinfo)])])
+else
+	AC_LIBOBJ(lib/getaddrinfo)
+fi
+
+AC_CHECK_MEMBER([struct sockaddr.sa_len],
+		[ AC_DEFINE(HAVE_SOCKADDR_LEN, 1, [Do we have sockaddr.sa_len?]) ],
+		[],
+		[
+#include <sys/types.h>
+#include <sys/socket.h>
+])
+
+AC_CHECK_MEMBER([struct sockaddr_in.sin_len],
+		[ AC_DEFINE(HAVE_SOCKADDR_IN_LEN, 1, [Do we have sockaddr_in.sin_len?]) ],
+		[],
+		[
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+])
+
+AC_CHECK_MEMBER([struct sockaddr_un.sun_len],
+		[ AC_DEFINE(HAVE_SOCKADDR_UN_LEN, 1, [Do we have sockaddr_un.sun_len?]) ],
+		[],
+		[
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+])
+
+AC_CHECK_MEMBER([struct sockaddr_in6.sin6_scope_id],
+		[ AC_DEFINE(HAVE_SOCKADDR_IN6_SCOPE_ID, 1, [Do we have sockaddr_in6.sin6_scope_id?]) ],
+		[],
+		[
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+])
+
+AC_HAVE_TYPE([struct stat64], [#include <stdio.h>
+#if HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#if HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#if STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# if HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+])
+
+# if we can't find strcasecmp, look in -lresolv (for Unixware at least)
+#
+AC_CHECK_FUNCS(strcasecmp)
+if test x"$ac_cv_func_strcasecmp" = x"no"; then
+    AC_CHECK_LIB(resolv, strcasecmp)
+fi
+
+AC_CHECK_FUNCS(aclsort)
+if test x"$ac_cv_func_aclsort" = x"no"; then
+    AC_CHECK_LIB(sec, aclsort)
+fi
+
+dnl At the moment we don't test for a broken memcmp(), because all we
+dnl need to do is test for equality, not comparison, and it seems that
+dnl every platform has a memcmp that can do at least that.
+dnl AC_FUNC_MEMCMP
+
+AC_FUNC_UTIME_NULL
+AC_FUNC_ALLOCA
+AC_CHECK_FUNCS(waitpid wait4 getcwd strdup chown chmod lchmod mknod mkfifo \
+    fchmod fstat ftruncate strchr readlink link utime utimes lutimes strftime \
+    memmove lchown vsnprintf snprintf vasprintf asprintf setsid strpbrk \
+    strlcat strlcpy strtol mallinfo getgroups setgroups geteuid getegid \
+    setlocale setmode open64 lseek64 mkstemp64 mtrace va_copy __va_copy \
+    seteuid strerror putenv iconv_open locale_charset nl_langinfo getxattr \
+    extattr_get_link sigaction sigprocmask setattrlist getgrouplist \
+    initgroups utimensat)
+
+dnl cygwin iconv.h defines iconv_open as libiconv_open
+if test x"$ac_cv_func_iconv_open" != x"yes"; then
+    AC_CHECK_FUNC(libiconv_open, [ac_cv_func_iconv_open=yes; AC_DEFINE(HAVE_ICONV_OPEN, 1)])
+fi
+
+AC_CHECK_FUNCS(getpgrp tcgetpgrp)
+if test $ac_cv_func_getpgrp = yes; then
+    AC_FUNC_GETPGRP
+fi
+
+AC_ARG_ENABLE(iconv-open,
+    AC_HELP_STRING([--disable-iconv-open],
+	    [disable all use of iconv_open() function]),
+    [], [enable_iconv_open=$ac_cv_func_iconv_open])
+
+if test x"$enable_iconv_open" != x"no"; then
+    AC_DEFINE(USE_ICONV_OPEN, 1, [Define to 1 if you want rsync to make use of iconv_open()])
+fi
+
+AC_ARG_ENABLE(iconv,
+    AC_HELP_STRING([--disable-iconv],
+	    [disable rsync's --iconv option]),
+    [], [enable_iconv=$enable_iconv_open])
+AH_TEMPLATE([ICONV_OPTION],
+[Define if you want the --iconv option.  Specifing a value will set the
+default iconv setting (a NULL means no --iconv processing by default).])
+if test x"$enable_iconv" != x"no"; then
+	if test x"$enable_iconv" = x"yes"; then
+		AC_DEFINE(ICONV_OPTION, NULL)
+	else
+		AC_DEFINE_UNQUOTED(ICONV_OPTION, "$enable_iconv")
+	fi
+	AC_DEFINE(UTF8_CHARSET, "UTF-8", [String to pass to iconv() for the UTF-8 charset.])
+fi
+
+AC_CACHE_CHECK([whether chown() modifies symlinks],rsync_cv_chown_modifies_symlink,[
+  AC_TRY_RUN([
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#include <stdlib.h>
+#include <errno.h>
+    main() {
+	char const *dangling_symlink = "conftest.dangle";
+	unlink(dangling_symlink);
+	if (symlink("conftest.no-such", dangling_symlink) < 0) abort();
+	if (chown(dangling_symlink, getuid(), getgid()) < 0 && errno == ENOENT) exit(1);
+	exit(0);
+    }],
+  rsync_cv_chown_modifies_symlink=yes,rsync_cv_chown_modifies_symlink=no,rsync_cv_chown_modifies_symlink=no)])
+if test $rsync_cv_chown_modifies_symlink = yes; then
+  AC_DEFINE(CHOWN_MODIFIES_SYMLINK, 1, [Define to 1 if chown modifies symlinks.])
+fi
+
+AC_CACHE_CHECK([whether link() can hard-link symlinks],rsync_cv_can_hardlink_symlink,[
+  AC_TRY_RUN([
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#include <stdlib.h>
+#include <errno.h>
+#define FILENAME "conftest.dangle"
+    main() {
+	unlink(FILENAME);
+	if (symlink("conftest.no-such", FILENAME) < 0) abort();
+	if (link(FILENAME, FILENAME "2") < 0) exit(1);
+	exit(0);
+    }],
+  rsync_cv_can_hardlink_symlink=yes,rsync_cv_can_hardlink_symlink=no,rsync_cv_can_hardlink_symlink=no)])
+if test $rsync_cv_can_hardlink_symlink = yes; then
+  AC_DEFINE(CAN_HARDLINK_SYMLINK, 1, [Define to 1 if link() can hard-link symlinks.])
+fi
+
+AC_CACHE_CHECK([whether link() can hard-link special files],rsync_cv_can_hardlink_special,[
+  AC_TRY_RUN([
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#include <stdlib.h>
+#include <errno.h>
+#define FILENAME "conftest.fifi"
+    main() {
+	unlink(FILENAME);
+	if (mkfifo(FILENAME, 0777) < 0) abort();
+	if (link(FILENAME, FILENAME "2") < 0) exit(1);
+	exit(0);
+    }],
+  rsync_cv_can_hardlink_special=yes,rsync_cv_can_hardlink_special=no,rsync_cv_can_hardlink_special=no)])
+if test $rsync_cv_can_hardlink_special = yes; then
+    AC_DEFINE(CAN_HARDLINK_SPECIAL, 1, [Define to 1 if link() can hard-link special files.])
+fi
+
+AC_CACHE_CHECK([for working socketpair],rsync_cv_HAVE_SOCKETPAIR,[
+AC_TRY_RUN([
+#include <sys/types.h>
+#include <sys/socket.h>
+
+main() {
+       int fd[2];
+       exit((socketpair(AF_UNIX, SOCK_STREAM, 0, fd) != -1) ? 0 : 1);
+}],
+rsync_cv_HAVE_SOCKETPAIR=yes,rsync_cv_HAVE_SOCKETPAIR=no,rsync_cv_HAVE_SOCKETPAIR=cross)])
+if test x"$rsync_cv_HAVE_SOCKETPAIR" = x"yes"; then
+    AC_DEFINE(HAVE_SOCKETPAIR, 1, [Define to 1 if you have the "socketpair" function])
+fi
+
+if test x"$with_included_popt" != x"yes"; then
+    AC_CHECK_LIB(popt, poptGetContext, , [with_included_popt=yes])
+fi
+if test x"$ac_cv_header_popt_popt_h" = x"yes"; then
+    # If the system has /usr/include/popt/popt.h, we enable the
+    # included popt because an attempt to "#include <popt/popt.h>"
+    # would use our included header file anyway (due to -I.), and
+    # might conflict with the system popt.
+    with_included_popt=yes
+elif test x"$ac_cv_header_popt_h" != x"yes"; then
+    with_included_popt=yes
+fi
+
+AC_MSG_CHECKING([whether to use included libpopt])
+if test x"$with_included_popt" = x"yes"; then
+    AC_MSG_RESULT($srcdir/popt)
+    BUILD_POPT='$(popt_OBJS)'
+    CFLAGS="$CFLAGS -I$srcdir/popt"
+    if test x"$ALLOCA" != x
+    then
+	# this can be removed when/if we add an included alloca.c;
+	#  see autoconf documentation on AC_FUNC_ALLOCA
+	AC_MSG_WARN([included libpopt will use malloc, not alloca (which wastes a small amount of memory)])
+    fi
+else
+    AC_MSG_RESULT(no)
+fi
+
+AC_CACHE_CHECK([for unsigned char],rsync_cv_SIGNED_CHAR_OK,[
+AC_TRY_COMPILE([],[signed char *s = ""],
+rsync_cv_SIGNED_CHAR_OK=yes,rsync_cv_SIGNED_CHAR_OK=no)])
+if test x"$rsync_cv_SIGNED_CHAR_OK" = x"yes"; then
+    AC_DEFINE(SIGNED_CHAR_OK, 1, [Define to 1 if "signed char" is a valid type])
+fi
+
+AC_CACHE_CHECK([for broken readdir],rsync_cv_HAVE_BROKEN_READDIR,[
+AC_TRY_RUN([#include <sys/types.h>
+#include <dirent.h>
+main() { struct dirent *di; DIR *d = opendir("."); di = readdir(d);
+if (di && di->d_name[-2] == '.' && di->d_name[-1] == 0 &&
+di->d_name[0] == 0) exit(0); exit(1);} ],
+rsync_cv_HAVE_BROKEN_READDIR=yes,rsync_cv_HAVE_BROKEN_READDIR=no,rsync_cv_HAVE_BROKEN_READDIR=cross)])
+if test x"$rsync_cv_HAVE_BROKEN_READDIR" = x"yes"; then
+    AC_DEFINE(HAVE_BROKEN_READDIR, 1, [Define to 1 if readdir() is broken])
+fi
+
+AC_CACHE_CHECK([for utimbuf],rsync_cv_HAVE_STRUCT_UTIMBUF,[
+AC_TRY_COMPILE([#include <sys/types.h>
+#include <utime.h>],
+[struct utimbuf tbuf;  tbuf.actime = 0; tbuf.modtime = 1; exit(utime("foo.c",&tbuf));],
+rsync_cv_HAVE_STRUCT_UTIMBUF=yes,rsync_cv_HAVE_STRUCT_UTIMBUF=no)])
+if test x"$rsync_cv_HAVE_STRUCT_UTIMBUF" = x"yes"; then
+    AC_DEFINE(HAVE_STRUCT_UTIMBUF, 1, [Define to 1 if you have the "struct utimbuf" type])
+fi
+
+AC_CACHE_CHECK([if gettimeofday takes tz argument],rsync_cv_HAVE_GETTIMEOFDAY_TZ,[
+AC_TRY_COMPILE([#include <sys/time.h>
+#include <unistd.h>],
+[struct timeval tv; exit(gettimeofday(&tv, NULL));],
+rsync_cv_HAVE_GETTIMEOFDAY_TZ=yes,rsync_cv_HAVE_GETTIMEOFDAY_TZ=no)])
+if test x"$rsync_cv_HAVE_GETTIMEOFDAY_TZ" != x"no"; then
+    AC_DEFINE(HAVE_GETTIMEOFDAY_TZ, 1, [Define to 1 if gettimeofday() takes a time-zone arg])
+fi
+
+AC_CACHE_CHECK([for C99 vsnprintf],rsync_cv_HAVE_C99_VSNPRINTF,[
+AC_TRY_RUN([
+#include <sys/types.h>
+#include <stdarg.h>
+void foo(const char *format, ...) {
+       va_list ap;
+       int len;
+       char buf[5];
+
+       va_start(ap, format);
+       len = vsnprintf(0, 0, format, ap);
+       va_end(ap);
+       if (len != 5) exit(1);
+
+       if (snprintf(buf, 3, "hello") != 5 || strcmp(buf, "he") != 0) exit(1);
+
+       exit(0);
+}
+main() { foo("hello"); }
+],
+rsync_cv_HAVE_C99_VSNPRINTF=yes,rsync_cv_HAVE_C99_VSNPRINTF=no,rsync_cv_HAVE_C99_VSNPRINTF=cross)])
+if test x"$rsync_cv_HAVE_C99_VSNPRINTF" = x"yes"; then
+    AC_DEFINE(HAVE_C99_VSNPRINTF, 1, [Define to 1 if vsprintf has a C99-compatible return value])
+fi
+
+
+AC_CACHE_CHECK([for secure mkstemp],rsync_cv_HAVE_SECURE_MKSTEMP,[
+AC_TRY_RUN([#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+main() {
+  struct stat st;
+  char tpl[20]="/tmp/test.XXXXXX";
+  int fd = mkstemp(tpl);
+  if (fd == -1) exit(1);
+  unlink(tpl);
+  if (fstat(fd, &st) != 0) exit(1);
+  if ((st.st_mode & 0777) != 0600) exit(1);
+  exit(0);
+}],
+rsync_cv_HAVE_SECURE_MKSTEMP=yes,
+rsync_cv_HAVE_SECURE_MKSTEMP=no,
+rsync_cv_HAVE_SECURE_MKSTEMP=cross)])
+if test x"$rsync_cv_HAVE_SECURE_MKSTEMP" = x"yes"; then
+    case $host_os in
+    hpux*)
+	dnl HP-UX has a broken mkstemp() implementation they refuse to fix,
+	dnl so we noisily skip using it.  See HP change request JAGaf34426
+	dnl for details. (sbonds)
+	AC_MSG_WARN(Skipping broken HP-UX mkstemp() -- using mktemp() instead)
+	;;
+    *)
+	AC_DEFINE(HAVE_SECURE_MKSTEMP, 1, [Define to 1 if mkstemp() is available and works right])
+	;;
+    esac
+fi
+
+
+AC_CACHE_CHECK([if mknod creates FIFOs],rsync_cv_MKNOD_CREATES_FIFOS,[
+AC_TRY_RUN([
+#include <stdio.h>
+#include <sys/stat.h>
+#include <errno.h>
+main() { int rc, ec; char *fn = "fifo-test";
+unlink(fn); rc = mknod(fn,S_IFIFO,0600); ec = errno; unlink(fn);
+if (rc) {printf("(%d %d) ",rc,ec); return ec;}
+return 0;}],
+           rsync_cv_MKNOD_CREATES_FIFOS=yes,rsync_cv_MKNOD_CREATES_FIFOS=no,rsync_cv_MKNOD_CREATES_FIFOS=cross)])
+if test x"$rsync_cv_MKNOD_CREATES_FIFOS" = x"yes"; then
+    AC_DEFINE(MKNOD_CREATES_FIFOS, 1, [Define to 1 if mknod() can create FIFOs.])
+fi
+
+AC_CACHE_CHECK([if mknod creates sockets],rsync_cv_MKNOD_CREATES_SOCKETS,[
+AC_TRY_RUN([
+#include <stdio.h>
+#include <sys/stat.h>
+#include <errno.h>
+main() { int rc, ec; char *fn = "sock-test";
+unlink(fn); rc = mknod(fn,S_IFSOCK,0600); ec = errno; unlink(fn);
+if (rc) {printf("(%d %d) ",rc,ec); return ec;}
+return 0;}],
+           rsync_cv_MKNOD_CREATES_SOCKETS=yes,rsync_cv_MKNOD_CREATES_SOCKETS=no,rsync_cv_MKNOD_CREATES_SOCKETS=cross)])
+if test x"$rsync_cv_MKNOD_CREATES_SOCKETS" = x"yes"; then
+    AC_DEFINE(MKNOD_CREATES_SOCKETS, 1, [Define to 1 if mknod() can create sockets.])
+fi
+
+#
+# The following test was mostly taken from the tcl/tk plus patches
+#
+AC_CACHE_CHECK([whether -c -o works],rsync_cv_DASHC_WORKS_WITH_DASHO,[
+rm -rf conftest*
+cat > conftest.$ac_ext <<EOF
+int main() { return 0; }
+EOF
+${CC-cc} -c -o conftest..o conftest.$ac_ext
+if test -f conftest..o; then
+    rsync_cv_DASHC_WORKS_WITH_DASHO=yes
+else
+    rsync_cv_DASHC_WORKS_WITH_DASHO=no
+fi
+rm -rf conftest*
+])
+if test x"$rsync_cv_DASHC_WORKS_WITH_DASHO" = x"yes"; then
+    OBJ_SAVE="#"
+    OBJ_RESTORE="#"
+    CC_SHOBJ_FLAG='-o $@'
+else
+    OBJ_SAVE='	@b=`basename $@ .o`;rm -f $$b.o.sav;if test -f $$b.o; then mv $$b.o $$b.o.sav;fi;'
+    OBJ_RESTORE='	@b=`basename $@ .o`;if test "$$b.o" != "$@"; then mv $$b.o $@; if test -f $$b.o.sav; then mv $$b.o.sav $$b.o; fi; fi'
+    CC_SHOBJ_FLAG=""
+fi
+
+AC_SUBST(OBJ_SAVE)
+AC_SUBST(OBJ_RESTORE)
+AC_SUBST(CC_SHOBJ_FLAG)
+AC_SUBST(BUILD_POPT)
+AC_SUBST(MAKE_MAN)
+
+AC_CHECK_FUNCS(_acl __acl _facl __facl)
+#################################################
+# check for ACL support
+
+AC_MSG_CHECKING([whether to support ACLs])
+AC_ARG_ENABLE(acl-support,
+	AC_HELP_STRING([--disable-acl-support],
+		       [disable ACL support]))
+
+if test x"$enable_acl_support" = x"no"; then
+    AC_MSG_RESULT(no)
+else
+    case "$host_os" in
+    *sysv5*)
+	AC_MSG_RESULT(Using UnixWare ACLs)
+	AC_DEFINE(HAVE_UNIXWARE_ACLS, 1, [true if you have UnixWare ACLs])
+	AC_DEFINE(SUPPORT_ACLS, 1, [Define to 1 to add support for ACLs])
+	;;
+    *solaris*|*cygwin*)
+	AC_MSG_RESULT(Using solaris ACLs)
+	AC_DEFINE(HAVE_SOLARIS_ACLS, 1, [true if you have solaris ACLs])
+	AC_DEFINE(SUPPORT_ACLS, 1)
+	;;
+    *hpux*)
+	AC_MSG_RESULT(Using HPUX ACLs)
+	AC_DEFINE(HAVE_HPUX_ACLS, 1, [true if you have HPUX ACLs])
+	AC_DEFINE(SUPPORT_ACLS, 1)
+	;;
+    *irix*)
+	AC_MSG_RESULT(Using IRIX ACLs)
+	AC_DEFINE(HAVE_IRIX_ACLS, 1, [true if you have IRIX ACLs])
+	AC_DEFINE(SUPPORT_ACLS, 1)
+	;;
+    *aix*)
+	AC_MSG_RESULT(Using AIX ACLs)
+	AC_DEFINE(HAVE_AIX_ACLS, 1, [true if you have AIX ACLs])
+	AC_DEFINE(SUPPORT_ACLS, 1)
+	;;
+    *osf*)
+	AC_MSG_RESULT(Using Tru64 ACLs)
+	AC_DEFINE(HAVE_TRU64_ACLS, 1, [true if you have Tru64 ACLs])
+	AC_DEFINE(SUPPORT_ACLS, 1)
+	LIBS="$LIBS -lpacl"
+	;;
+    darwin*)
+	AC_MSG_RESULT(Using OS X ACLs)
+	AC_DEFINE(HAVE_OSX_ACLS, 1, [true if you have Mac OS X ACLs])
+	AC_DEFINE(SUPPORT_ACLS, 1)
+	;;
+    *)
+	AC_MSG_RESULT(running tests:)
+	AC_CHECK_LIB(acl,acl_get_file)
+	    AC_CACHE_CHECK([for ACL support],samba_cv_HAVE_POSIX_ACLS,[
+	    AC_TRY_LINK([#include <sys/types.h>
+#include <sys/acl.h>],
+[ acl_t acl; int entry_id; acl_entry_t *entry_p; return acl_get_entry( acl, entry_id, entry_p);],
+samba_cv_HAVE_POSIX_ACLS=yes,samba_cv_HAVE_POSIX_ACLS=no)])
+	AC_MSG_CHECKING(ACL test results)
+	if test x"$samba_cv_HAVE_POSIX_ACLS" = x"yes"; then
+	    AC_MSG_RESULT(Using posix ACLs)
+	    AC_DEFINE(HAVE_POSIX_ACLS, 1, [true if you have posix ACLs])
+	    AC_DEFINE(SUPPORT_ACLS, 1)
+	    AC_CACHE_CHECK([for acl_get_perm_np],samba_cv_HAVE_ACL_GET_PERM_NP,[
+		AC_TRY_LINK([#include <sys/types.h>
+#include <sys/acl.h>],
+[ acl_permset_t permset_d; acl_perm_t perm; return acl_get_perm_np( permset_d, perm);],
+samba_cv_HAVE_ACL_GET_PERM_NP=yes,samba_cv_HAVE_ACL_GET_PERM_NP=no)])
+	    if test x"$samba_cv_HAVE_ACL_GET_PERM_NP" = x"yes"; then
+		AC_DEFINE(HAVE_ACL_GET_PERM_NP, 1, [true if you have acl_get_perm_np])
+	    fi
+	else
+	    if test x"$enable_acl_support" = x"yes"; then
+		AC_MSG_ERROR(Failed to find ACL support)
+	    else
+		AC_MSG_RESULT(No ACL support found)
+	    fi
+	fi
+	;;
+    esac
+fi
+
+#################################################
+# check for extended attribute support
+AC_MSG_CHECKING(whether to support extended attributes)
+AC_ARG_ENABLE(xattr-support,
+    AC_HELP_STRING([--disable-xattr-support],
+	    [disable extended attributes]),
+    [], [case "$ac_cv_func_getxattr$ac_cv_func_extattr_get_link" in
+	*yes*) enable_xattr_support=maybe ;;
+	*) enable_xattr_support=no ;;
+	esac])
+AH_TEMPLATE([SUPPORT_XATTRS],
+[Define to 1 to add support for extended attributes])
+if test x"$enable_xattr_support" = x"no"; then
+    AC_MSG_RESULT(no)
+else
+    case "$host_os" in
+    *linux*)
+	AC_MSG_RESULT(Using Linux xattrs)
+	AC_DEFINE(HAVE_LINUX_XATTRS, 1, [True if you have Linux xattrs])
+	AC_DEFINE(SUPPORT_XATTRS, 1)
+	;;
+    darwin*)
+	AC_MSG_RESULT(Using OS X xattrs)
+	AC_DEFINE(HAVE_OSX_XATTRS, 1, [True if you have Mac OS X xattrs])
+	AC_DEFINE(SUPPORT_XATTRS, 1)
+	;;
+    freebsd*)
+	AC_MSG_RESULT(Using FreeBSD extattrs)
+	AC_DEFINE(HAVE_FREEBSD_XATTRS, 1, [True if you have FreeBSD xattrs])
+	AC_DEFINE(SUPPORT_XATTRS, 1)
+	;;
+    solaris*)
+	AC_MSG_RESULT(Using Solaris xattrs)
+	AC_DEFINE(HAVE_SOLARIS_XATTRS, 1, [True if you have Solaris xattrs])
+	AC_DEFINE(SUPPORT_XATTRS, 1)
+	AC_DEFINE(NO_SYMLINK_XATTRS, 1, [True if symlinks don't support xattrs])
+	;;
+    *)
+	if test x"$enable_xattr_support" = x"yes"; then
+	    AC_MSG_ERROR(Failed to find extended attribute support)
+	else
+	    AC_MSG_RESULT(No extended attribute support found)
+	fi
+	;;
+    esac
+fi
+
+if test x"$enable_acl_support" = x"no" -o x"$enable_xattr_support" = x"no" -o x"$enable_iconv" = x"no"; then
+    AC_MSG_CHECKING([whether $CC supports -Wno-unused-parameter])
+    OLD_CFLAGS="$CFLAGS"
+    CFLAGS="$CFLAGS -Wno-unused-parameter"
+    AC_TRY_LINK([#include <stdio.h>], [printf("hello\n");], [rsync_warn_flag=yes], [rsync_warn_flag=no])
+    AC_MSG_RESULT([$rsync_warn_flag])
+    if test x"$rsync_warn_flag" = x"no"; then
+	CFLAGS="$OLD_CFLAGS"
+    fi
+fi
+
+case "$CC" in
+' checker'*|checker*)
+    AC_DEFINE(FORCE_FD_ZERO_MEMSET, 1, [Used to make "checker" understand that FD_ZERO() clears memory.])
+    ;;
+esac
+
+AC_CONFIG_FILES([Makefile lib/dummy zlib/dummy popt/dummy shconfig])
+AC_OUTPUT
+
+AC_MSG_RESULT()
+AC_MSG_RESULT([    rsync ${RSYNC_VERSION} configuration successful])
+AC_MSG_RESULT()