File: configure.ac

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# $Id: configure.ac,v 1.519 2013/03/22 01:49:15 dtucker Exp $
#
# Copyright (c) 1999-2004 Damien Miller
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

AC_INIT([libasr], [portable], [bugs@opensmtpd.org])
AC_LANG([C])
AC_CONFIG_MACRO_DIR([m4])

AC_CONFIG_HEADER([config.h])
AC_PROG_CC
AC_CANONICAL_HOST
AC_C_BIGENDIAN

# Checks for programs.
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_LIBTOOL
AC_PATH_PROG([AR], [ar])
AC_PATH_PROG([CAT], [cat])
AC_PATH_PROG([ZCAT], [zcat])
AC_SUBST([ZCAT])
AC_PATH_PROG([SED], [sed])
AC_PATH_PROG([TEST_MINUS_S_SH], [bash])
AC_PATH_PROG([TEST_MINUS_S_SH], [ksh])
AC_PATH_PROG([TEST_MINUS_S_SH], [sh])
AC_PATH_PROG([SH], [sh])
AC_PATH_PROG([GROFF], [groff])
AC_PATH_PROG([NROFF], [nroff])
AC_PATH_PROG([MANDOC], [mandoc])
AC_PROG_YACC

AM_INIT_AUTOMAKE

LT_INIT

#here we should test for variables set by libtool detection
if test "x$with_pic" != "xno" ; then
	CFLAGS="$CFLAGS ${pic_flag}"
fi


#from here everything comes from portable openssh configure.ac script

#l50
dnl select manpage formatter
if test "x$MANDOC" != "x" ; then
	MANFMT="$MANDOC"
elif test "x$NROFF" != "x" ; then
	MANFMT="$NROFF -mandoc"
elif test "x$GROFF" != "x" ; then
	MANFMT="$GROFF -mandoc -Tascii"
else
	AC_MSG_WARN([no manpage formatted found])
	MANFMT="false"
fi
AC_SUBST([MANFMT])
#l61

#l78
if test -z "$AR" ; then
	AC_MSG_ERROR([*** 'ar' missing, please install or fix your \$PATH ***])
fi
#l80

#l101
if test -z "$LD" ; then
	LD=$CC
fi
AC_SUBST([LD])

AC_C_INLINE

AC_CHECK_DECL([LLONG_MAX], [have_llong_max=1], , [#include <limits.h>])
#l108

#l150 (without _FORTIFY_SOURCE=2)
if test "$GCC" = "yes" || test "$GCC" = "egcs"; then
	OSSH_CHECK_CFLAG_COMPILE([-Qunused-arguments])
	OSSH_CHECK_CFLAG_COMPILE([-Wunknown-warning-option])
	OSSH_CHECK_CFLAG_COMPILE([-Wall])
	OSSH_CHECK_CFLAG_COMPILE([-Wpointer-arith])
	OSSH_CHECK_CFLAG_COMPILE([-Wuninitialized])
	OSSH_CHECK_CFLAG_COMPILE([-Wsign-compare])
	OSSH_CHECK_CFLAG_COMPILE([-Wformat-security])
	OSSH_CHECK_CFLAG_COMPILE([-Wsizeof-pointer-memaccess])
	OSSH_CHECK_CFLAG_COMPILE([-Wpointer-sign], [-Wno-pointer-sign])
	OSSH_CHECK_CFLAG_COMPILE([-Wunused-result], [-Wno-unused-result])
	OSSH_CHECK_CFLAG_COMPILE([-fno-strict-aliasing])
#	OSSH_CHECK_CFLAG_COMPILE([-D_FORTIFY_SOURCE=2])
    if test "x$use_toolchain_hardening" = "x1"; then
	OSSH_CHECK_LDFLAG_LINK([-Wl,-z,relro])
	OSSH_CHECK_LDFLAG_LINK([-Wl,-z,now])
	OSSH_CHECK_LDFLAG_LINK([-Wl,-z,noexecstack])
	# NB. -ftrapv expects certain support functions to be present in
	# the compiler library (libgcc or similar) to detect integer operations
	# that can overflow. We must check that the result of enabling it
	# actually links. The test program compiled/linked includes a number
	# of integer operations that should exercise this.
	OSSH_CHECK_CFLAG_LINK([-ftrapv])
    fi
	AC_MSG_CHECKING([gcc version])
	GCC_VER=`$CC -v 2>&1 | $AWK '/gcc version /{print $3}'`
	case $GCC_VER in
		1.*) no_attrib_nonnull=1 ;;
		2.8* | 2.9*)
		     no_attrib_nonnull=1
		     ;;
		2.*) no_attrib_nonnull=1 ;;
		*) ;;
	esac
	AC_MSG_RESULT([$GCC_VER])

	AC_MSG_CHECKING([if $CC accepts -fno-builtin-memset])
	saved_CFLAGS="$CFLAGS"
	CFLAGS="$CFLAGS -fno-builtin-memset"
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <string.h> ]],
			[[ char b[10]; memset(b, 0, sizeof(b)); ]])],
		[ AC_MSG_RESULT([yes]) ],
		[ AC_MSG_RESULT([no])
		  CFLAGS="$saved_CFLAGS" ]
	)

	# -fstack-protector-all doesn't always work for some GCC versions
	# and/or platforms, so we test if we can.  If it's not supported
	# on a given platform gcc will emit a warning so we use -Werror.
	if test "x$use_stack_protector" = "x1"; then
	    for t in -fstack-protector-strong -fstack-protector-all \
		    -fstack-protector; do
		AC_MSG_CHECKING([if $CC supports $t])
		saved_CFLAGS="$CFLAGS"
		saved_LDFLAGS="$LDFLAGS"
		CFLAGS="$CFLAGS $t -Werror"
		LDFLAGS="$LDFLAGS $t -Werror"
		AC_LINK_IFELSE(
			[AC_LANG_PROGRAM([[ #include <stdio.h> ]],
			[[
	char x[256];
	snprintf(x, sizeof(x), "XXX");
			 ]])],
		    [ AC_MSG_RESULT([yes])
		      CFLAGS="$saved_CFLAGS $t"
		      LDFLAGS="$saved_LDFLAGS $t"
		      AC_MSG_CHECKING([if $t works])
		      AC_RUN_IFELSE(
			[AC_LANG_PROGRAM([[ #include <stdio.h> ]],
			[[
	char x[256];
	snprintf(x, sizeof(x), "XXX");
			]])],
			[ AC_MSG_RESULT([yes])
			  break ],
			[ AC_MSG_RESULT([no]) ],
			[ AC_MSG_WARN([cross compiling: cannot test])
			  break ]
		      )
		    ],
		    [ AC_MSG_RESULT([no]) ]
		)
		CFLAGS="$saved_CFLAGS"
		LDFLAGS="$saved_LDFLAGS"
	    done
	fi

	if test -z "$have_llong_max"; then
		# retry LLONG_MAX with -std=gnu99, needed on some Linuxes
		unset ac_cv_have_decl_LLONG_MAX
		saved_CFLAGS="$CFLAGS"
		CFLAGS="$CFLAGS -std=gnu99"
		AC_CHECK_DECL([LLONG_MAX],
		    [have_llong_max=1],
		    [CFLAGS="$saved_CFLAGS"],
		    [#include <limits.h>]
		)
	fi
fi

AC_MSG_CHECKING([if compiler allows __attribute__ on return types])
AC_COMPILE_IFELSE(
    [AC_LANG_PROGRAM([[
#include <stdlib.h>
__attribute__((__unused__)) static void foo(void){return;}]],
    [[ exit(0); ]])],
    [ AC_MSG_RESULT([yes]) ],
    [ AC_MSG_RESULT([no])
      AC_DEFINE(NO_ATTRIBUTE_ON_RETURN_TYPE, 1,
	 [compiler does not accept __attribute__ on return types]) ]
)

if test "x$no_attrib_nonnull" != "x1" ; then
	AC_DEFINE([HAVE_ATTRIBUTE__NONNULL__], [1], [Have attribute nonnull])
fi

AC_ARG_WITH([rpath],
	[  --without-rpath         Disable auto-added -R linker paths],
	[
		if test "x$withval" = "xno" ; then
			need_dash_r=""
		fi
		if test "x$withval" = "xyes" ; then
			need_dash_r=1
		fi
	]
)

# Allow user to specify flags
AC_ARG_WITH([cflags],
	[  --with-cflags           Specify additional flags to pass to compiler],
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
		    test "x${withval}" != "xyes"; then
			CFLAGS="$CFLAGS $withval"
		fi
	]
)
AC_ARG_WITH([cppflags],
	[  --with-cppflags         Specify additional flags to pass to preprocessor] ,
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
		    test "x${withval}" != "xyes"; then
			CPPFLAGS="$CPPFLAGS $withval"
		fi
	]
)
AC_ARG_WITH([ldflags],
	[  --with-ldflags          Specify additional flags to pass to linker],
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
		    test "x${withval}" != "xyes"; then
			LDFLAGS="$LDFLAGS $withval"
		fi
	]
)
AC_ARG_WITH([libs],
	[  --with-libs             Specify additional libraries to link with],
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
		    test "x${withval}" != "xyes"; then
			LIBS="$LIBS $withval"
		fi
	]
)
AC_ARG_WITH([Werror],
	[  --with-Werror           Build main code with -Werror],
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"; then
			werror_flags="-Werror"
			if test "x${withval}" != "xyes"; then
				werror_flags="$withval"
			fi
		fi
	]
)
#l325

AC_CHECK_HEADERS([ \
	crypt.h \
	dirent.h \
	fcntl.h \
	getopt.h \
	limits.h \
	mach/mach_time.h \
	ndir.h \
	netdb.h \
	paths.h \
	shadow.h \
	sys/dir.h \
	sys/file.h \
	sys/mount.h \
	sys/ndir.h \
	sys/pstat.h \
	sys/statfs.h \
	sys/time.h \
	sys/un.h \
	time.h \
	ucred.h \
	util.h \
	utime.h
])

#l411
# login_cap.h requires sys/types.h on NetBSD
AC_CHECK_HEADERS([login_cap.h], [], [], [
#include <sys/types.h>
])

# older BSDs need sys/param.h before sys/mount.h
AC_CHECK_HEADERS([sys/mount.h], [], [], [
#include <sys/param.h>
])
#l419

#l432 (customized)
# Check for some target-specific stuff
case "$host" in
*-*-aix*)
	check_for_aix_broken_getaddrinfo=1
	AC_DEFINE([SETEUID_BREAKS_SETUID], [1],
	    [Define if your platform breaks doing a seteuid before a setuid])
	AC_DEFINE([BROKEN_SETREUID], [1], [Define if your setreuid() is broken])
	AC_DEFINE([BROKEN_SETREGID], [1], [Define if your setregid() is broken])
	;;
*-*-darwin*)
	use_pie=auto
	AC_MSG_CHECKING([if we have working getaddrinfo])
	AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include <mach-o/dyld.h>
main() { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))
		exit(0);
	else
		exit(1);
}
			]])],
	[AC_MSG_RESULT([working])],
	[AC_MSG_RESULT([buggy])
	AC_DEFINE([BROKEN_GETADDRINFO], [1],
		[getaddrinfo is broken (if present)])
	],
	[AC_MSG_RESULT([assume it is working])])
	AC_DEFINE([SETEUID_BREAKS_SETUID])
	AC_DEFINE([BROKEN_SETREUID])
	AC_DEFINE([BROKEN_SETREGID])
	AC_DEFINE([BROKEN_GLOB], [1], [OS X glob does not do what we expect])
	AC_DEFINE_UNQUOTED([BIND_8_COMPAT], [1],
		[Define if your resolver libs need this for getrrsetbyname])
	;;
*-*-dragonfly*)
	SMTPDLIBS="$SMTPDLIBS -lcrypt"
	;;
*-*-linux* | *-gnu* | *-k*bsd*-gnu* )
	use_pie=auto
	check_for_libcrypt_later=1
	case `uname -r` in
	1.*|2.0.*)
		AC_DEFINE(BROKEN_CMSG_TYPE, 1,
			[Define if cmsg_type is not passed correctly])
		;;
	esac
	;;
*-*-netbsd*)
	check_for_libcrypt_before=1
	if test "x$withval" != "xno" ; then
		need_dash_r=1
	fi
	;;
*-*-freebsd*)
	check_for_libcrypt_later=1
	AC_DEFINE([BROKEN_GLOB], [1], [FreeBSD glob does not do what we need])
	;;
*-*-openbsd*)
	use_pie=auto
	AC_DEFINE([HAVE_ATTRIBUTE__SENTINEL__], [1], [OpenBSD's gcc has sentinel])
	AC_DEFINE([HAVE_ATTRIBUTE__BOUNDED__], [1], [OpenBSD's gcc has bounded])
	echo "Please use -current or a native version at http://www.opensmtpd.org/archives/"
	;;
esac

AC_MSG_CHECKING([compiler and flags for sanity])
AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include <stdio.h> ]], [[ exit(0); ]])],
	[	AC_MSG_RESULT([yes]) ],
	[
		AC_MSG_RESULT([no])
		AC_MSG_ERROR([*** compiler cannot create working executables, check config.log ***])
	],
	[	AC_MSG_WARN([cross compiling: not checking compiler sanity]) ]
)

dnl Checks for header files.
# Checks for libraries.
AC_CHECK_FUNC([setsockopt], , [AC_CHECK_LIB([socket], [setsockopt])])
#l1082

#l1225
dnl UnixWare 2.x
AC_CHECK_FUNC([strcasecmp],
	[], [ AC_CHECK_LIB([resolv], [strcasecmp], [LIBS="$LIBS -lresolv"]) ]
)
AC_CHECK_FUNCS([utimes],
	[], [ AC_CHECK_LIB([c89], [utimes], [AC_DEFINE([HAVE_UTIMES])
					LIBS="$LIBS -lc89"]) ]
)

#l1525
AC_ARG_WITH([pie],
    [  --with-pie             Build Position Independent Executables if possible], [
	if test "x$withval" = "xno"; then
		use_pie=no
	fi
	if test "x$withval" = "xyes"; then
		use_pie=yes
	fi
    ]
)
if test "x$use_pie" = "x"; then
	use_pie=no
fi
if test "x$use_toolchain_hardening" != "x1" && test "x$use_pie" = "xauto"; then
	# Turn off automatic PIE when toolchain hardening is off.
	use_pie=no
fi
if test "x$use_pie" = "xauto"; then
	# Automatic PIE requires gcc >= 4.x
	AC_MSG_CHECKING([for gcc >= 4.x])
	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#if !defined(__GNUC__) || __GNUC__ < 4
#error gcc is too old
#endif
]])],
	[ AC_MSG_RESULT([yes]) ],
	[ AC_MSG_RESULT([no])
	  use_pie=no ]
)
fi
if test "x$use_pie" != "xno"; then
	SAVED_CFLAGS="$CFLAGS"
	SAVED_LDFLAGS="$LDFLAGS"
	OSSH_CHECK_CFLAG_COMPILE([-fPIE])
	OSSH_CHECK_LDFLAG_LINK([-pie])
	# We use both -fPIE and -pie or neither.
	AC_MSG_CHECKING([whether both -fPIE and -pie are supported])
	if echo "x $CFLAGS"  | grep ' -fPIE' >/dev/null 2>&1 && \
	   echo "x $LDFLAGS" | grep ' -pie'  >/dev/null 2>&1 ; then
		AC_MSG_RESULT([yes])
	else
		AC_MSG_RESULT([no])
		CFLAGS="$SAVED_CFLAGS"
		LDFLAGS="$SAVED_LDFLAGS"
	fi
fi
#l1570

#l1572 (customized)
dnl    Checks for library functions. Please keep in alphabetical order
AC_CHECK_FUNCS([ \
	asprintf \
	bcopy \
	explicit_bzero \
	fgetln \
	freeaddrinfo \
	getaddrinfo \
	getnameinfo \
	inet_aton \
	inet_ntoa \
	inet_ntop \
	isblank \
	issetugid \
	memmove \
	reallocarray \
	snprintf \
	strdup \
	strerror \
	strlcat \
	strlcpy \
	strtonum \
	vasprintf \
	vsnprintf \
])
#l1685

#l1715
AC_SEARCH_LIBS([nanosleep], [rt posix4], [AC_DEFINE([HAVE_NANOSLEEP], [1],
	[Some systems put nanosleep outside of libc])])

AC_SEARCH_LIBS([clock_gettime], [rt],
	[AC_DEFINE([HAVE_CLOCK_GETTIME], [1], [Have clock_gettime])])
#l1719

#l1723
AC_CHECK_DECL([strsep],
	[AC_CHECK_FUNCS([strsep])],
	[],
	[
#ifdef HAVE_STRING_H
# include <string.h>
#endif
	])
#l1730

#l1747
AC_CHECK_DECLS([O_NONBLOCK], , ,
	[
#include <sys/types.h>
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
	])

AC_CHECK_DECLS([writev], , , [
#include <sys/types.h>
#include <sys/uio.h>
#include <unistd.h>
	])

AC_CHECK_DECLS([MAXSYMLINKS], , , [
#include <sys/param.h>
	])

AC_CHECK_DECLS([offsetof], , , [
#include <stddef.h>
	])

# extra bits for select(2)
AC_CHECK_DECLS([howmany, NFDBITS], [], [], [[
#include <sys/param.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SYSMACROS_H
#include <sys/sysmacros.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
	]])
AC_CHECK_TYPES([fd_mask], [], [], [[
#include <sys/param.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
	]])
#l1801

#l1849
dnl    Checks for time functions
AC_CHECK_FUNCS([gettimeofday time])
#l1850

##chl
AC_SEARCH_LIBS(res_9_b64_ntop, resolv)
##chl

#l1873
# Check for broken snprintf
if test "x$ac_cv_func_snprintf" = "xyes" ; then
	AC_MSG_CHECKING([whether snprintf correctly terminates long strings])
	AC_RUN_IFELSE(
		[AC_LANG_PROGRAM([[ #include <stdio.h> ]],
		[[
	char b[5];
	snprintf(b,5,"123456789");
	exit(b[4]!='\0'); 
		]])],
		[AC_MSG_RESULT([yes])],
		[
			AC_MSG_RESULT([no])
			AC_DEFINE([BROKEN_SNPRINTF], [1],
				[Define if your snprintf is busted])
			AC_MSG_WARN([****** Your snprintf() function is broken, complain to your vendor])
		],
		[ AC_MSG_WARN([cross compiling: Assuming working snprintf()]) ]
	)
fi

# If we don't have a working asprintf, then we strongly depend on vsnprintf
# returning the right thing on overflow: the number of characters it tried to
# create (as per SUSv3)
if test "x$ac_cv_func_asprintf" != "xyes" && \
   test "x$ac_cv_func_vsnprintf" = "xyes" ; then
	AC_MSG_CHECKING([whether vsnprintf returns correct values on overflow])
	AC_RUN_IFELSE(
		[AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <stdio.h>
#include <stdarg.h>

int x_snprintf(char *str,size_t count,const char *fmt,...)
{
	size_t ret; va_list ap;
	va_start(ap, fmt); ret = vsnprintf(str, count, fmt, ap); va_end(ap);
	return ret;
}
		]], [[
	char x[1];
	exit(x_snprintf(x, 1, "%s %d", "hello", 12345) == 11 ? 0 : 1);
		]])],
		[AC_MSG_RESULT([yes])],
		[
			AC_MSG_RESULT([no])
			AC_DEFINE([BROKEN_SNPRINTF], [1],
				[Define if your snprintf is busted])
			AC_MSG_WARN([****** Your vsnprintf() function is broken, complain to your vendor])
		],
		[ AC_MSG_WARN([cross compiling: Assuming working vsnprintf()]) ]
	)
fi

# On systems where [v]snprintf is broken, but is declared in stdio,
# check that the fmt argument is const char * or just char *.
# This is only useful for when BROKEN_SNPRINTF
AC_MSG_CHECKING([whether snprintf can declare const char *fmt])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <stdio.h>
int snprintf(char *a, size_t b, const char *c, ...) { return 0; }
		]], [[
	snprintf(0, 0, 0);
		]])],
   [AC_MSG_RESULT([yes])
    AC_DEFINE([SNPRINTF_CONST], [const],
              [Define as const if snprintf() can declare const char *fmt])],
   [AC_MSG_RESULT([no])
    AC_DEFINE([SNPRINTF_CONST], [/* not const */])])

# Check for missing getpeereid (or equiv) support
NO_PEERCHECK=""
if test "x$ac_cv_func_getpeereid" != "xyes" -a "x$ac_cv_func_getpeerucred" != "xyes"; then
	AC_MSG_CHECKING([whether system supports SO_PEERCRED getsockopt])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>]], [[int i = SO_PEERCRED;]])],
		[ AC_MSG_RESULT([yes])
		  AC_DEFINE([HAVE_SO_PEERCRED], [1], [Have PEERCRED socket option])
		], [AC_MSG_RESULT([no])
		NO_PEERCHECK=1
        ])
fi

#l2030
if test "x$ac_cv_func_getaddrinfo" = "xyes" && \
    test "x$check_for_hpux_broken_getaddrinfo" = "x1"; then
	AC_MSG_CHECKING([if getaddrinfo seems to work])
	AC_RUN_IFELSE(
		[AC_LANG_PROGRAM([[
#include <stdio.h>
#include <sys/socket.h>
#include <netdb.h>
#include <errno.h>
#include <netinet/in.h>

#define TEST_PORT "2222"
		]], [[
	int err, sock;
	struct addrinfo *gai_ai, *ai, hints;
	char ntop[NI_MAXHOST], strport[NI_MAXSERV], *name = NULL;

	memset(&hints, 0, sizeof(hints));
	hints.ai_family = PF_UNSPEC;
	hints.ai_socktype = SOCK_STREAM;
	hints.ai_flags = AI_PASSIVE;

	err = getaddrinfo(name, TEST_PORT, &hints, &gai_ai);
	if (err != 0) {
		fprintf(stderr, "getaddrinfo failed (%s)", gai_strerror(err));
		exit(1);
	}

	for (ai = gai_ai; ai != NULL; ai = ai->ai_next) {
		if (ai->ai_family != AF_INET6)
			continue;

		err = getnameinfo(ai->ai_addr, ai->ai_addrlen, ntop,
		    sizeof(ntop), strport, sizeof(strport),
		    NI_NUMERICHOST|NI_NUMERICSERV);

		if (err != 0) {
			if (err == EAI_SYSTEM)
				perror("getnameinfo EAI_SYSTEM");
			else
				fprintf(stderr, "getnameinfo failed: %s\n",
				    gai_strerror(err));
			exit(2);
		}

		sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
		if (sock < 0)
			perror("socket");
		if (bind(sock, ai->ai_addr, ai->ai_addrlen) < 0) {
			if (errno == EBADF)
				exit(3);
		}
	}
	exit(0);
		]])],
		[
			AC_MSG_RESULT([yes])
		],
		[
			AC_MSG_RESULT([no])
			AC_DEFINE([BROKEN_GETADDRINFO])
		],
		[
			AC_MSG_RESULT([cross-compiling, assuming yes])
		]
	)
fi

if test "x$ac_cv_func_getaddrinfo" = "xyes" && \
    test "x$check_for_aix_broken_getaddrinfo" = "x1"; then
	AC_MSG_CHECKING([if getaddrinfo seems to work])
	AC_RUN_IFELSE(
		[AC_LANG_PROGRAM([[
#include <stdio.h>
#include <sys/socket.h>
#include <netdb.h>
#include <errno.h>
#include <netinet/in.h>

#define TEST_PORT "2222"
		]], [[
	int err, sock;
	struct addrinfo *gai_ai, *ai, hints;
	char ntop[NI_MAXHOST], strport[NI_MAXSERV], *name = NULL;

	memset(&hints, 0, sizeof(hints));
	hints.ai_family = PF_UNSPEC;
	hints.ai_socktype = SOCK_STREAM;
	hints.ai_flags = AI_PASSIVE;

	err = getaddrinfo(name, TEST_PORT, &hints, &gai_ai);
	if (err != 0) {
		fprintf(stderr, "getaddrinfo failed (%s)", gai_strerror(err));
		exit(1);
	}

	for (ai = gai_ai; ai != NULL; ai = ai->ai_next) {
		if (ai->ai_family != AF_INET && ai->ai_family != AF_INET6)
			continue;

		err = getnameinfo(ai->ai_addr, ai->ai_addrlen, ntop,
		    sizeof(ntop), strport, sizeof(strport),
		    NI_NUMERICHOST|NI_NUMERICSERV);

		if (ai->ai_family == AF_INET && err != 0) {
			perror("getnameinfo");
			exit(2);
		}
	}
	exit(0);
		]])],
		[
			AC_MSG_RESULT([yes])
			AC_DEFINE([AIX_GETNAMEINFO_HACK], [1],
				[Define if you have a getaddrinfo that fails
				for the all-zeros IPv6 address])
		],
		[
			AC_MSG_RESULT([no])
			AC_DEFINE([BROKEN_GETADDRINFO])
		],
		[
			AC_MSG_RESULT([cross-compiling, assuming no])
		]
	)
fi
#l2155

#l3037 (customized s/SSH/SMTPD/)
# Check for  long long datatypes
AC_CHECK_TYPES([long long, unsigned long long, long double])

# Check datatype sizes
AC_CHECK_SIZEOF([short int], [2])
AC_CHECK_SIZEOF([int], [4])
AC_CHECK_SIZEOF([long int], [4])
AC_CHECK_SIZEOF([long long int], [8])

# Sanity check long long for some platforms (AIX)
if test "x$ac_cv_sizeof_long_long_int" = "x4" ; then
	ac_cv_sizeof_long_long_int=0
fi

# compute LLONG_MIN and LLONG_MAX if we don't know them.
if test -z "$have_llong_max"; then
	AC_MSG_CHECKING([for max value of long long])
	AC_RUN_IFELSE(
		[AC_LANG_PROGRAM([[
#include <stdio.h>
/* Why is this so damn hard? */
#ifdef __GNUC__
# undef __GNUC__
#endif
#define __USE_ISOC99
#include <limits.h>
#define DATA "conftest.llminmax"
#define my_abs(a) ((a) < 0 ? ((a) * -1) : (a))

/*
 * printf in libc on some platforms (eg old Tru64) does not understand %lld so
 * we do this the hard way.
 */
static int
fprint_ll(FILE *f, long long n)
{
	unsigned int i;
	int l[sizeof(long long) * 8];

	if (n < 0)
		if (fprintf(f, "-") < 0)
			return -1;
	for (i = 0; n != 0; i++) {
		l[i] = my_abs(n % 10);
		n /= 10;
	}
	do {
		if (fprintf(f, "%d", l[--i]) < 0)
			return -1;
	} while (i != 0);
	if (fprintf(f, " ") < 0)
		return -1;
	return 0;
}
		]], [[
	FILE *f;
	long long i, llmin, llmax = 0;

	if((f = fopen(DATA,"w")) == NULL)
		exit(1);

#if defined(LLONG_MIN) && defined(LLONG_MAX)
	fprintf(stderr, "Using system header for LLONG_MIN and LLONG_MAX\n");
	llmin = LLONG_MIN;
	llmax = LLONG_MAX;
#else
	fprintf(stderr, "Calculating  LLONG_MIN and LLONG_MAX\n");
	/* This will work on one's complement and two's complement */
	for (i = 1; i > llmax; i <<= 1, i++)
		llmax = i;
	llmin = llmax + 1LL;	/* wrap */
#endif

	/* Sanity check */
	if (llmin + 1 < llmin || llmin - 1 < llmin || llmax + 1 > llmax
	    || llmax - 1 > llmax || llmin == llmax || llmin == 0
	    || llmax == 0 || llmax < LONG_MAX || llmin > LONG_MIN) {
		fprintf(f, "unknown unknown\n");
		exit(2);
	}

	if (fprint_ll(f, llmin) < 0)
		exit(3);
	if (fprint_ll(f, llmax) < 0)
		exit(4);
	if (fclose(f) < 0)
		exit(5);
	exit(0);
		]])],
		[
			llong_min=`$AWK '{print $1}' conftest.llminmax`
			llong_max=`$AWK '{print $2}' conftest.llminmax`

			AC_MSG_RESULT([$llong_max])
			AC_DEFINE_UNQUOTED([LLONG_MAX], [${llong_max}LL],
			    [max value of long long calculated by configure])
			AC_MSG_CHECKING([for min value of long long])
			AC_MSG_RESULT([$llong_min])
			AC_DEFINE_UNQUOTED([LLONG_MIN], [${llong_min}LL],
			    [min value of long long calculated by configure])
		],
		[
			AC_MSG_RESULT([not found])
		],
		[
			AC_MSG_WARN([cross compiling: not checking])
		]
	)
fi


# More checks for data types
AC_CACHE_CHECK([for u_int type], ac_cv_have_u_int, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ u_int a; a = 1;]])],
	[ ac_cv_have_u_int="yes" ], [ ac_cv_have_u_int="no" 
	])
])
if test "x$ac_cv_have_u_int" = "xyes" ; then
	AC_DEFINE([HAVE_U_INT], [1], [define if you have u_int data type])
	have_u_int=1
fi

AC_CACHE_CHECK([for intXX_t types], ac_cv_have_intxx_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ int8_t a; int16_t b; int32_t c; a = b = c = 1;]])],
	[ ac_cv_have_intxx_t="yes" ], [ ac_cv_have_intxx_t="no" 
	])
])
if test "x$ac_cv_have_intxx_t" = "xyes" ; then
	AC_DEFINE([HAVE_INTXX_T], [1], [define if you have intxx_t data type])
	have_intxx_t=1
fi

if (test -z "$have_intxx_t" && \
	   test "x$ac_cv_header_stdint_h" = "xyes")
then
    AC_MSG_CHECKING([for intXX_t types in stdint.h])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <stdint.h> ]],
	[[ int8_t a; int16_t b; int32_t c; a = b = c = 1;]])],
		[
			AC_DEFINE([HAVE_INTXX_T])
			AC_MSG_RESULT([yes])
		], [ AC_MSG_RESULT([no]) 
	])
fi

AC_CACHE_CHECK([for int64_t type], ac_cv_have_int64_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#ifdef HAVE_STDINT_H
# include <stdint.h>
#endif
#include <sys/socket.h>
#ifdef HAVE_SYS_BITYPES_H
# include <sys/bitypes.h>
#endif
		]], [[
int64_t a; a = 1;
		]])],
	[ ac_cv_have_int64_t="yes" ], [ ac_cv_have_int64_t="no" 
	])
])
if test "x$ac_cv_have_int64_t" = "xyes" ; then
	AC_DEFINE([HAVE_INT64_T], [1], [define if you have int64_t data type])
fi

AC_CACHE_CHECK([for u_intXX_t types], ac_cv_have_u_intxx_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ u_int8_t a; u_int16_t b; u_int32_t c; a = b = c = 1;]])],
	[ ac_cv_have_u_intxx_t="yes" ], [ ac_cv_have_u_intxx_t="no" 
	])
])
if test "x$ac_cv_have_u_intxx_t" = "xyes" ; then
	AC_DEFINE([HAVE_U_INTXX_T], [1], [define if you have u_intxx_t data type])
	have_u_intxx_t=1
fi

if test -z "$have_u_intxx_t" ; then
    AC_MSG_CHECKING([for u_intXX_t types in sys/socket.h])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/socket.h> ]],
	[[ u_int8_t a; u_int16_t b; u_int32_t c; a = b = c = 1;]])],
		[
			AC_DEFINE([HAVE_U_INTXX_T])
			AC_MSG_RESULT([yes])
		], [ AC_MSG_RESULT([no]) 
	])
fi

AC_CACHE_CHECK([for u_int64_t types], ac_cv_have_u_int64_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ u_int64_t a; a = 1;]])],
	[ ac_cv_have_u_int64_t="yes" ], [ ac_cv_have_u_int64_t="no" 
	])
])
if test "x$ac_cv_have_u_int64_t" = "xyes" ; then
	AC_DEFINE([HAVE_U_INT64_T], [1], [define if you have u_int64_t data type])
	have_u_int64_t=1
fi

if (test -z "$have_u_int64_t" && \
	   test "x$ac_cv_header_sys_bitypes_h" = "xyes")
then
    AC_MSG_CHECKING([for u_int64_t type in sys/bitypes.h])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/bitypes.h> ]],
	[[ u_int64_t a; a = 1]])],
		[
			AC_DEFINE([HAVE_U_INT64_T])
			AC_MSG_RESULT([yes])
		], [ AC_MSG_RESULT([no]) 
	])
fi

if test -z "$have_u_intxx_t" ; then
	AC_CACHE_CHECK([for uintXX_t types], ac_cv_have_uintxx_t, [
		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
			]], [[
	uint8_t a;
	uint16_t b;
	uint32_t c;
	a = b = c = 1;
			]])],
		[ ac_cv_have_uintxx_t="yes" ], [ ac_cv_have_uintxx_t="no" 
		])
	])
	if test "x$ac_cv_have_uintxx_t" = "xyes" ; then
		AC_DEFINE([HAVE_UINTXX_T], [1],
			[define if you have uintxx_t data type])
	fi
fi

if (test -z "$have_uintxx_t" && \
	   test "x$ac_cv_header_stdint_h" = "xyes")
then
    AC_MSG_CHECKING([for uintXX_t types in stdint.h])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <stdint.h> ]],
	[[ uint8_t a; uint16_t b; uint32_t c; a = b = c = 1;]])],
		[
			AC_DEFINE([HAVE_UINTXX_T])
			AC_MSG_RESULT([yes])
		], [ AC_MSG_RESULT([no]) 
	])
fi

if (test -z "$have_uintxx_t" && \
	   test "x$ac_cv_header_inttypes_h" = "xyes")
then
    AC_MSG_CHECKING([for uintXX_t types in inttypes.h])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <inttypes.h> ]],
	[[ uint8_t a; uint16_t b; uint32_t c; a = b = c = 1;]])],
		[
			AC_DEFINE([HAVE_UINTXX_T])
			AC_MSG_RESULT([yes])
		], [ AC_MSG_RESULT([no]) 
	])
fi

if (test -z "$have_u_intxx_t" || test -z "$have_intxx_t" && \
	   test "x$ac_cv_header_sys_bitypes_h" = "xyes")
then
	AC_MSG_CHECKING([for intXX_t and u_intXX_t types in sys/bitypes.h])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/bitypes.h>
		]], [[
			int8_t a; int16_t b; int32_t c;
			u_int8_t e; u_int16_t f; u_int32_t g;
			a = b = c = e = f = g = 1;
		]])],
		[
			AC_DEFINE([HAVE_U_INTXX_T])
			AC_DEFINE([HAVE_INTXX_T])
			AC_MSG_RESULT([yes])
		], [AC_MSG_RESULT([no])
	])
fi


AC_CACHE_CHECK([for u_char], ac_cv_have_u_char, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ u_char foo; foo = 125; ]])],
	[ ac_cv_have_u_char="yes" ], [ ac_cv_have_u_char="no" 
	])
])
if test "x$ac_cv_have_u_char" = "xyes" ; then
	AC_DEFINE([HAVE_U_CHAR], [1], [define if you have u_char data type])
fi

AC_CHECK_TYPES([intmax_t, uintmax_t], , , [
#include <sys/types.h>
#include <stdint.h>
])

TYPE_SOCKLEN_T

AC_CHECK_TYPES([sig_atomic_t], , , [#include <signal.h>])
AC_CHECK_TYPES([fsblkcnt_t, fsfilcnt_t], , , [
#include <sys/types.h>
#ifdef HAVE_SYS_BITYPES_H
#include <sys/bitypes.h>
#endif
#ifdef HAVE_SYS_STATFS_H
#include <sys/statfs.h>
#endif
#ifdef HAVE_SYS_STATVFS_H
#include <sys/statvfs.h>
#endif
])

AC_CHECK_TYPES([in_addr_t, in_port_t], , ,
[#include <sys/types.h>
#include <netinet/in.h>])

AC_CACHE_CHECK([for size_t], ac_cv_have_size_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ size_t foo; foo = 1235; ]])],
	[ ac_cv_have_size_t="yes" ], [ ac_cv_have_size_t="no" 
	])
])
if test "x$ac_cv_have_size_t" = "xyes" ; then
	AC_DEFINE([HAVE_SIZE_T], [1], [define if you have size_t data type])
fi

AC_CACHE_CHECK([for ssize_t], ac_cv_have_ssize_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ ssize_t foo; foo = 1235; ]])],
	[ ac_cv_have_ssize_t="yes" ], [ ac_cv_have_ssize_t="no" 
	])
])
if test "x$ac_cv_have_ssize_t" = "xyes" ; then
	AC_DEFINE([HAVE_SSIZE_T], [1], [define if you have ssize_t data type])
fi

AC_CACHE_CHECK([for clock_t], ac_cv_have_clock_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <time.h> ]],
	[[ clock_t foo; foo = 1235; ]])],
	[ ac_cv_have_clock_t="yes" ], [ ac_cv_have_clock_t="no" 
	])
])
if test "x$ac_cv_have_clock_t" = "xyes" ; then
	AC_DEFINE([HAVE_CLOCK_T], [1], [define if you have clock_t data type])
fi

AC_CACHE_CHECK([for sa_family_t], ac_cv_have_sa_family_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
		]], [[ sa_family_t foo; foo = 1235; ]])],
	[ ac_cv_have_sa_family_t="yes" ],
	[ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
		]], [[ sa_family_t foo; foo = 1235; ]])],
		[ ac_cv_have_sa_family_t="yes" ],
		[ ac_cv_have_sa_family_t="no" ]
	)
	])
])
if test "x$ac_cv_have_sa_family_t" = "xyes" ; then
	AC_DEFINE([HAVE_SA_FAMILY_T], [1],
		[define if you have sa_family_t data type])
fi

AC_CACHE_CHECK([for pid_t], ac_cv_have_pid_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ pid_t foo; foo = 1235; ]])],
	[ ac_cv_have_pid_t="yes" ], [ ac_cv_have_pid_t="no" 
	])
])
if test "x$ac_cv_have_pid_t" = "xyes" ; then
	AC_DEFINE([HAVE_PID_T], [1], [define if you have pid_t data type])
fi

AC_CACHE_CHECK([for mode_t], ac_cv_have_mode_t, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/types.h> ]],
	[[ mode_t foo; foo = 1235; ]])],
	[ ac_cv_have_mode_t="yes" ], [ ac_cv_have_mode_t="no" 
	])
])
if test "x$ac_cv_have_mode_t" = "xyes" ; then
	AC_DEFINE([HAVE_MODE_T], [1], [define if you have mode_t data type])
fi


AC_CACHE_CHECK([for struct sockaddr_storage], ac_cv_have_struct_sockaddr_storage, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
		]], [[ struct sockaddr_storage s; ]])],
	[ ac_cv_have_struct_sockaddr_storage="yes" ],
	[ ac_cv_have_struct_sockaddr_storage="no" 
	])
])
if test "x$ac_cv_have_struct_sockaddr_storage" = "xyes" ; then
	AC_DEFINE([HAVE_STRUCT_SOCKADDR_STORAGE], [1],
		[define if you have struct sockaddr_storage data type])
fi

AC_CACHE_CHECK([for struct sockaddr_in6], ac_cv_have_struct_sockaddr_in6, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <netinet/in.h>
		]], [[ struct sockaddr_in6 s; s.sin6_family = 0; ]])],
	[ ac_cv_have_struct_sockaddr_in6="yes" ],
	[ ac_cv_have_struct_sockaddr_in6="no" 
	])
])
if test "x$ac_cv_have_struct_sockaddr_in6" = "xyes" ; then
	AC_DEFINE([HAVE_STRUCT_SOCKADDR_IN6], [1],
		[define if you have struct sockaddr_in6 data type])
fi

AC_CACHE_CHECK([for struct in6_addr], ac_cv_have_struct_in6_addr, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <netinet/in.h>
		]], [[ struct in6_addr s; s.s6_addr[0] = 0; ]])],
	[ ac_cv_have_struct_in6_addr="yes" ],
	[ ac_cv_have_struct_in6_addr="no" 
	])
])
if test "x$ac_cv_have_struct_in6_addr" = "xyes" ; then
	AC_DEFINE([HAVE_STRUCT_IN6_ADDR], [1],
		[define if you have struct in6_addr data type])

dnl Now check for sin6_scope_id
	AC_CHECK_MEMBERS([struct sockaddr_in6.sin6_scope_id], , ,
		[
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <netinet/in.h>
		])
fi

AC_CACHE_CHECK([for struct addrinfo], ac_cv_have_struct_addrinfo, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
		]], [[ struct addrinfo s; s.ai_flags = AI_PASSIVE; ]])],
	[ ac_cv_have_struct_addrinfo="yes" ],
	[ ac_cv_have_struct_addrinfo="no" 
	])
])
if test "x$ac_cv_have_struct_addrinfo" = "xyes" ; then
	AC_DEFINE([HAVE_STRUCT_ADDRINFO], [1],
		[define if you have struct addrinfo data type])
fi

AC_CACHE_CHECK([for struct timeval], ac_cv_have_struct_timeval, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <sys/time.h> ]],
	[[ struct timeval tv; tv.tv_sec = 1;]])],
	[ ac_cv_have_struct_timeval="yes" ],
	[ ac_cv_have_struct_timeval="no" 
	])
])
if test "x$ac_cv_have_struct_timeval" = "xyes" ; then
	AC_DEFINE([HAVE_STRUCT_TIMEVAL], [1], [define if you have struct timeval])
	have_struct_timeval=1
fi

AC_CHECK_TYPES([struct timespec])

# We need int64_t or else certian parts of the compile will fail.
if test "x$ac_cv_have_int64_t" = "xno" && \
	test "x$ac_cv_sizeof_long_int" != "x8" && \
	test "x$ac_cv_sizeof_long_long_int" = "x0" ; then
	echo "libasr requires int64_t support.  Contact your vendor or install"
	echo "an alternative compiler (I.E., GCC) before continuing."
	echo ""
	exit 1;
else
dnl test snprintf (broken on SCO w/gcc)
	AC_RUN_IFELSE(
		[AC_LANG_SOURCE([[
#include <stdio.h>
#include <string.h>
#ifdef HAVE_SNPRINTF
main()
{
	char buf[50];
	char expected_out[50];
	int mazsize = 50 ;
#if (SIZEOF_LONG_INT == 8)
	long int num = 0x7fffffffffffffff;
#else
	long long num = 0x7fffffffffffffffll;
#endif
	strcpy(expected_out, "9223372036854775807");
	snprintf(buf, mazsize, "%lld", num);
	if(strcmp(buf, expected_out) != 0)
		exit(1);
	exit(0);
}
#else
main() { exit(0); }
#endif
		]])], [ true ], [ AC_DEFINE([BROKEN_SNPRINTF]) ],
		AC_MSG_WARN([cross compiling: Assuming working snprintf()])
	)
fi
#l3539

#l3561
AC_CHECK_MEMBERS([struct passwd.pw_gecos, struct passwd.pw_class,
struct passwd.pw_change, struct passwd.pw_expire],
[], [], [[
#include <sys/types.h>
#include <pwd.h>
]])

AC_CHECK_MEMBER([struct __res_state.retrans], [], [AC_DEFINE([__res_state], [state],
	[Define if we don't have struct __res_state in resolv.h])],
[[
#include <stdio.h>
#if HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>
]])

AC_CACHE_CHECK([for ss_family field in struct sockaddr_storage],
		ac_cv_have_ss_family_in_struct_ss, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
		]], [[ struct sockaddr_storage s; s.ss_family = 1; ]])],
	[ ac_cv_have_ss_family_in_struct_ss="yes" ],
	[ ac_cv_have_ss_family_in_struct_ss="no" ])
])
if test "x$ac_cv_have_ss_family_in_struct_ss" = "xyes" ; then
	AC_DEFINE([HAVE_SS_FAMILY_IN_SS], [1], [Fields in struct sockaddr_storage])
fi

AC_CACHE_CHECK([for __ss_family field in struct sockaddr_storage],
		ac_cv_have___ss_family_in_struct_ss, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
		]], [[ struct sockaddr_storage s; s.__ss_family = 1; ]])],
	[ ac_cv_have___ss_family_in_struct_ss="yes" ],
	[ ac_cv_have___ss_family_in_struct_ss="no" 
	])
])
if test "x$ac_cv_have___ss_family_in_struct_ss" = "xyes" ; then
	AC_DEFINE([HAVE___SS_FAMILY_IN_SS], [1],
		[Fields in struct sockaddr_storage])
fi

dnl make sure we're using the real structure members and not defines
AC_CACHE_CHECK([for msg_accrights field in struct msghdr],
		ac_cv_have_accrights_in_msghdr, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/uio.h>
		]], [[
#ifdef msg_accrights
#error "msg_accrights is a macro"
exit(1);
#endif
struct msghdr m;
m.msg_accrights = 0;
exit(0);
		]])],
		[ ac_cv_have_accrights_in_msghdr="yes" ],
		[ ac_cv_have_accrights_in_msghdr="no" ]
	)
])
if test "x$ac_cv_have_accrights_in_msghdr" = "xyes" ; then
	AC_DEFINE([HAVE_ACCRIGHTS_IN_MSGHDR], [1],
		[Define if your system uses access rights style
		file descriptor passing])
fi

AC_MSG_CHECKING([if struct statvfs.f_fsid is integral type])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/param.h>
#include <sys/stat.h>
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#ifdef HAVE_SYS_STATVFS_H
#include <sys/statvfs.h>
#endif
	]], [[ struct statvfs s; s.f_fsid = 0; ]])],
	[ AC_MSG_RESULT([yes]) ],
	[ AC_MSG_RESULT([no])

	AC_MSG_CHECKING([if fsid_t has member val])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/statvfs.h>
	]], [[ fsid_t t; t.val[0] = 0; ]])],
	[ AC_MSG_RESULT([yes])
	  AC_DEFINE([FSID_HAS_VAL], [1], [fsid_t has member val]) ],
	[ AC_MSG_RESULT([no]) ])

	AC_MSG_CHECKING([if f_fsid has member __val])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/statvfs.h>
	]], [[ fsid_t t; t.__val[0] = 0; ]])],
	[ AC_MSG_RESULT([yes])
	  AC_DEFINE([FSID_HAS___VAL], [1], [fsid_t has member __val]) ],
	[ AC_MSG_RESULT([no]) ])
])

AC_CACHE_CHECK([for msg_control field in struct msghdr],
		ac_cv_have_control_in_msghdr, [
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/uio.h>
		]], [[
#ifdef msg_control
#error "msg_control is a macro"
exit(1);
#endif
struct msghdr m;
m.msg_control = 0;
exit(0);
		]])],
		[ ac_cv_have_control_in_msghdr="yes" ],
		[ ac_cv_have_control_in_msghdr="no" ]
	)
])
if test "x$ac_cv_have_control_in_msghdr" = "xyes" ; then
	AC_DEFINE([HAVE_CONTROL_IN_MSGHDR], [1],
		[Define if your system uses ancillary data style
		file descriptor passing])
fi

AC_CACHE_CHECK([if libc defines __progname], ac_cv_libc_defines___progname, [
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
		[[ extern char *__progname; printf("%s", __progname); ]])],
	[ ac_cv_libc_defines___progname="yes" ],
	[ ac_cv_libc_defines___progname="no" 
	])
])
if test "x$ac_cv_libc_defines___progname" = "xyes" ; then
	AC_DEFINE([HAVE___PROGNAME], [1], [Define if libc defines __progname])
fi

AC_CACHE_CHECK([whether $CC implements __FUNCTION__], ac_cv_cc_implements___FUNCTION__, [
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <stdio.h> ]],
		[[ printf("%s", __FUNCTION__); ]])],
	[ ac_cv_cc_implements___FUNCTION__="yes" ],
	[ ac_cv_cc_implements___FUNCTION__="no" 
	])
])
if test "x$ac_cv_cc_implements___FUNCTION__" = "xyes" ; then
	AC_DEFINE([HAVE___FUNCTION__], [1],
		[Define if compiler implements __FUNCTION__])
fi

AC_CACHE_CHECK([whether $CC implements __func__], ac_cv_cc_implements___func__, [
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <stdio.h> ]],
		[[ printf("%s", __func__); ]])],
	[ ac_cv_cc_implements___func__="yes" ],
	[ ac_cv_cc_implements___func__="no" 
	])
])
if test "x$ac_cv_cc_implements___func__" = "xyes" ; then
	AC_DEFINE([HAVE___func__], [1], [Define if compiler implements __func__])
fi

AC_CACHE_CHECK([whether va_copy exists], ac_cv_have_va_copy, [
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <stdarg.h>
va_list x,y;
		]], [[ va_copy(x,y); ]])],
	[ ac_cv_have_va_copy="yes" ],
	[ ac_cv_have_va_copy="no" 
	])
])
if test "x$ac_cv_have_va_copy" = "xyes" ; then
	AC_DEFINE([HAVE_VA_COPY], [1], [Define if va_copy exists])
fi

AC_CACHE_CHECK([whether __va_copy exists], ac_cv_have___va_copy, [
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <stdarg.h>
va_list x,y;
		]], [[ __va_copy(x,y); ]])],
	[ ac_cv_have___va_copy="yes" ], [ ac_cv_have___va_copy="no" 
	])
])
if test "x$ac_cv_have___va_copy" = "xyes" ; then
	AC_DEFINE([HAVE___VA_COPY], [1], [Define if __va_copy exists])
fi

AC_CACHE_CHECK([whether getopt has optreset support],
		ac_cv_have_getopt_optreset, [
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <getopt.h> ]],
		[[ extern int optreset; optreset = 0; ]])],
	[ ac_cv_have_getopt_optreset="yes" ],
	[ ac_cv_have_getopt_optreset="no" 
	])
])
if test "x$ac_cv_have_getopt_optreset" = "xyes" ; then
	AC_DEFINE([HAVE_GETOPT_OPTRESET], [1],
		[Define if your getopt(3) defines and uses optreset])
fi
#l3765

##chl part
AC_CHECK_TYPES([struct ifgroupreq])

AC_CHECK_MEMBERS([struct stat.st_flags], , ,
	[ #include <sys/types.h>
	  #include <sys/stat.h> ]
)

AC_CHECK_MEMBERS([struct stat.st_mtim], , ,
	[ #include <sys/types.h>
	  #include <sys/stat.h> ]
)

AC_CHECK_MEMBERS([struct stat.st_mtimespec], , ,
	[ #include <sys/types.h>
	  #include <sys/stat.h> ]
)

AC_CHECK_MEMBERS([struct sockaddr.sa_len], , ,
	[ #include <netdb.h>
	  #include <netinet/in.h>
	  #include <sys/socket.h> ]
)

AC_CHECK_MEMBERS([struct sockaddr_storage.ss_len], , ,
	[ #include <netdb.h>
	  #include <netinet/in.h>
	  #include <sys/socket.h> ]
)

AC_CHECK_MEMBERS([struct sockaddr_in.sin_len], , ,
	[ #include <netdb.h>
	  #include <netinet/in.h>
	  #include <sys/socket.h> ]
)

AC_CHECK_MEMBERS([struct sockaddr_in6.sin6_len], , ,
	[ #include <netdb.h>
	  #include <netinet/in.h>
	  #include <sys/socket.h> ]
)

AC_CHECK_MEMBERS([struct statfs.f_favail], , ,
	[ #include <sys/vfs.h>
	  #include <sys/statfs.h> ]
)
##chl part

#l4045
STRIP_OPT=-s
AC_ARG_ENABLE([strip],
	[  --disable-strip         Disable calling strip(1) on install],
	[
		if test "x$enableval" = "xno" ; then
			STRIP_OPT=
		fi
	]
)
AC_SUBST([STRIP_OPT])
#l4054

#l4176 (customized s/ssh.1/smtpd/smtpd.8/)
# Options from here on. Some of these are preset by platform above
AC_ARG_WITH([mantype],
	[  --with-mantype=man|cat|doc  Set man page type],
	[
		case "$withval" in
		man|cat|doc)
			MANTYPE=$withval
			;;
		*)
			AC_MSG_ERROR([invalid man type: $withval])
			;;
		esac
	]
)
if test -z "$MANTYPE"; then
	TestPath="/usr/bin${PATH_SEPARATOR}/usr/ucb"
	AC_PATH_PROGS([NROFF], [nroff awf], [/bin/false], [$TestPath])
	if ${NROFF} -mdoc ${srcdir}/src/asr_run.3 >/dev/null 2>&1; then
		MANTYPE=doc
	elif ${NROFF} -man ${srcdir}/src/asr_run.3 >/dev/null 2>&1; then
		MANTYPE=man
	else
		MANTYPE=cat
	fi
fi
AC_SUBST([MANTYPE])
if test "$MANTYPE" = "doc"; then
	mansubdir=man;
else
	mansubdir=$MANTYPE;
fi
AC_SUBST([mansubdir])
#l4207


CA_FILE=/etc/ssl/cert.pem
AC_ARG_WITH([ca-file],
	[  --with-ca-file=FILE     Path for certificate file (default=/etc/ssl/cert.pem)],
	[
		if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
		    test "x${withval}" != "xyes"; then
			CA_FILE=$withval
		fi
	]
)
AC_SUBST([CA_FILE])



dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU Extensions])


#l4742
dnl Adding -Werror to CFLAGS early prevents configure tests from running.
dnl Add now.
CFLAGS="$CFLAGS $werror_flags"

if test "x$ac_cv_func_getaddrinfo" != "xyes" ; then
	TEST_SSH_IPV6=no
else
	TEST_SSH_IPV6=yes
fi
AC_CHECK_DECL([BROKEN_GETADDRINFO],  [TEST_SSH_IPV6=no])
AC_SUBST([TEST_SSH_IPV6], [$TEST_SSH_IPV6])
AC_SUBST([TEST_MALLOC_OPTIONS], [$TEST_MALLOC_OPTIONS])
AC_SUBST([UNSUPPORTED_ALGORITHMS], [$unsupported_algorithms])

AC_EXEEXT
#l4757

##chl (still based on portable OpenSSH's configure.ac)
AC_MSG_CHECKING([if res_hnok will link])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <netdb.h>
#include <resolv.h>
				]], [[
	res_hnok("");
				]])],
		   [AC_MSG_RESULT([yes])
		    AC_DEFINE([HAVE_RES_HNOK], [1], [Have res_hnok()])],
		   [AC_MSG_RESULT([no])
		    saved_LIBS="$LIBS"
		    LIBS="$LIBS -lresolv"
		    AC_MSG_CHECKING([for res_hnok in -lresolv])
		    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <netdb.h>
#include <resolv.h>
				]], [[
	res_hnok("");
				]])],
			[AC_MSG_RESULT([yes])
			 AC_DEFINE([HAVE_RES_HNOK], [1], [Have res_hnok()])],
			[LIBS="$saved_LIBS"
			 AC_MSG_RESULT([no])])
		    ])
##end of chl


AC_MSG_CHECKING([if RES_USE_EDNS0 is defined in resolv.h])
AC_EGREP_CPP(HAVE_RES_USE_EDNS0, [
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>
#ifdef RES_USE_EDNS0
HAVE_RES_USE_EDNS0
#endif
], [
   AC_MSG_RESULT([yes])
], [
   AC_MSG_RESULT([no])
   AC_DEFINE([RES_USE_EDNS0], [0], [Defined to 0 if RES_USE_EDNS0 isn't a supported resolver flag.])
])


AC_MSG_CHECKING([if RES_USE_DNSSEC is defined in resolv.h])
AC_EGREP_CPP(HAVE_RES_USE_DNSSEC, [
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>
#ifdef RES_USE_DNSSEC
HAVE_RES_USE_DNSSEC
#endif
], [
   AC_MSG_RESULT([yes])
], [
   AC_MSG_RESULT([no])
   AC_DEFINE([RES_USE_DNSSEC], [0], [Defined to 0 if RES_USE_DNSSEC isn't a supported resolver flag.])
])


AC_CONFIG_FILES([Makefile
		src/Makefile
		])

#l4761
AC_OUTPUT

# Print summary of options

# Someone please show me a better way :)
A=`eval echo ${prefix}` ; A=`eval echo ${A}`
B=`eval echo ${bindir}` ; B=`eval echo ${B}`
C=`eval echo ${sbindir}` ; C=`eval echo ${C}`
D=`eval echo ${sysconfdir}` ; D=`eval echo ${D}`
E=`eval echo ${mandir}/${mansubdir}X` ; E=`eval echo ${E}`

echo ""
echo "libasr has been configured with the following options:"
echo "                     User binaries: $B"
echo "                   System binaries: $C"
echo "               Configuration files: $D"
echo "                      Manual pages: $E"
echo "                    Manpage format: $MANTYPE"

echo ""

echo "              Host: ${host}"
echo "          Compiler: ${CC}"
echo "    Compiler flags: ${CFLAGS}"
echo "Preprocessor flags: ${CPPFLAGS}"
echo "      Linker flags: ${LDFLAGS}"
echo "         Libraries: ${LIBS}"

echo ""