configure.in - third_party/openssh-portable - Git at Google

 AC_INIT(ssh.c)

 AC_CONFIG_HEADER(config.h)
 AC_CANONICAL_HOST

 dnl Checks for programs.
 AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_RANLIB
 AC_PROG_INSTALL
 AC_CHECK_PROG(AR, ar, ar)
 AC_PATH_PROG(xauth_path, xauth)

 dnl Use ip address instead of hostname in $DISPLAY
 AC_ARG_WITH(rsh,
 	[  --with-rsh=PATH         Specify path to remote shell program ],
 	[
 		AC_DEFINE_UNQUOTED(RSH_PATH, "$withval")
 	],
 	[
 		AC_PATH_PROG(rsh_path, rsh)
 	]
 )

 if test ! -z "$xauth_path" ; then
 	AC_DEFINE_UNQUOTED(XAUTH_PATH, "$xauth_path")
 fi
 if test ! -z "$rsh_path" ; then
 	AC_DEFINE_UNQUOTED(RSH_PATH, "$rsh_path")
 fi

 dnl Checks for compiler characteristics
 if test "$GCC" = "yes"; then CFLAGS="$CFLAGS -Wall"; fi

 AC_C_INLINE

 dnl Check for some target-specific stuff
 case "$host" in
 *-*-hpux10*)
 	if test -z "$GCC"; then
 		CFLAGS="$CFLAGS -Aa"
 	fi
 	CFLAGS="$CFLAGS -D_HPUX_SOURCE"
 	AC_DEFINE(IPADDR_IN_DISPLAY)
 	AC_DEFINE(USE_UTMPX)
 	AC_MSG_CHECKING(for HPUX trusted system password database)
 	if test -f /tcb/files/auth/system/default; then
 		AC_MSG_RESULT(yes)
 		AC_DEFINE(HAVE_HPUX_TRUSTED_SYSTEM_PW)
 		LIBS="$LIBS -lsec"
 	else
 		AC_MSG_RESULT(no)
 		AC_DEFINE(DISABLE_SHADOW)
 	fi
 	;;
 *-*-solaris*)
 	AC_DEFINE(USE_UTMPX)
 	;;
 *-*-irix5*)
 	AC_DEFINE(CRYPT_H_BREAKS_BUILD)
 #	CFLAGS="$CFLAGS -shared"
 	no_libsocket=1
 	no_libnsl=1
 	;;
 esac

 dnl Check for OpenSSL/SSLeay directories.
 AC_MSG_CHECKING([for OpenSSL/SSLeay directory])
 for ssldir in /usr /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local $prefix /usr/pkg ; do
 	if test -f "$ssldir/include/openssl/crypto.h"; then
 		AC_DEFINE(HAVE_OPENSSL)
 		GOT_SSL="yes"
 		break
 	fi
 	if test -f "$ssldir/include/ssl/crypto.h"; then
 		AC_DEFINE(HAVE_SSL)
 		GOT_SSL="yes"
 		break
 	fi
 done
 if test -z "$GOT_SSL" ; then
 	AC_MSG_ERROR([Could not find SSLeay / OpenSSL libraries, please install])
 fi
 AC_SUBST(ssldir)
 AC_DEFINE_UNQUOTED(ssldir, "$ssldir")
 if test "$ssldir" != "/usr"; then
 	CFLAGS="$CFLAGS -I$ssldir/include"
 	LDFLAGS="$LDFLAGS -L$ssldir/lib"
 fi
 AC_MSG_RESULT($ssldir)

 dnl Check for RSAref library.
 AC_MSG_CHECKING([for RSAref library])
 saved_LIBS="$LIBS"
 LIBS="$saved_LIBS -lRSAglue -lrsaref"
 AC_TRY_LINK([], [],
 [AC_MSG_RESULT(yes); ],
 [AC_MSG_RESULT(no)]; LIBS="$saved_LIBS")

 dnl Checks for libraries.
 AC_CHECK_LIB(crypto, CRYPTO_lock, ,AC_MSG_ERROR([*** libcrypto missing - please install first ***]))
 AC_CHECK_LIB(z, deflate, ,AC_MSG_ERROR([*** zlib missing - please install first ***]))
 AC_CHECK_LIB(util, login, AC_DEFINE(HAVE_LIBUTIL_LOGIN) LIBS="$LIBS -lutil")
 AC_CHECK_LIB(crypt, crypt, , )

 if test -z "$no_libsocket" ; then
 	AC_CHECK_LIB(nsl, yp_match, , )
 fi
 if test -z "$no_libnsl" ; then
 	AC_CHECK_LIB(socket, main, , )
 fi

 dnl Checks for header files.
 AC_CHECK_HEADERS(bstring.h crypt.h endian.h lastlog.h login.h maillock.h netdb.h netgroup.h paths.h poll.h pty.h shadow.h security/pam_appl.h sys/bsdtty.h sys/cdefs.h sys/poll.h sys/select.h sys/stropts.h sys/time.h sys/ttcompat.h util.h utmp.h utmpx.h)

 dnl Checks for library functions.
 AC_CHECK_FUNCS(arc4random getpagesize _getpty innetgr md5_crypt mkdtemp openpty setenv seteuid setlogin setproctitle setreuid snprintf strlcat strlcpy updwtmpx vsnprintf)

 AC_CHECK_FUNC(login,
 	[AC_DEFINE(HAVE_LOGIN)],
 	[AC_CHECK_LIB(bsd, login, [LIBS="$LIBS -lbsd"; AC_DEFINE(HAVE_LOGIN)])]
 )

 AC_CHECK_FUNC(daemon,
 	[AC_DEFINE(HAVE_DAEMON)],
 	[AC_CHECK_LIB(bsd, daemon, [LIBS="$LIBS -lbsd"; AC_DEFINE(HAVE_DAEMON)])]
 )

 dnl Checks for data types
 AC_CHECK_SIZEOF(short int, 2)
 AC_CHECK_SIZEOF(int, 4)
 AC_CHECK_SIZEOF(long int, 4)
 AC_CHECK_SIZEOF(long long int, 8)

 dnl More checks for data types
 AC_MSG_CHECKING([for quad_t])
 AC_TRY_COMPILE(
 	[#include <sys/types.h>],
 	[quad_t a; a = 1235;],
 	[
 		AC_DEFINE(HAVE_QUAD_T)
 		AC_MSG_RESULT(yes)
 	],
 	[AC_MSG_RESULT(no)]
 )

 AC_MSG_CHECKING([for intXX_t types])
 AC_TRY_COMPILE(
 	[#include <sys/types.h>],
 	[int16_t a; int32_t b; a = 1235; b = 1235;],
 	[
 		AC_DEFINE(HAVE_INTXX_T)
 		AC_MSG_RESULT(yes)
 	],
 	[AC_MSG_RESULT(no)]
 )

 AC_MSG_CHECKING([for u_intXX_t types])
 AC_TRY_COMPILE(
 	[#include <sys/types.h>],
 	[u_int16_t c; u_int32_t d; c = 1235; d = 1235;],
 	[
 		AC_DEFINE(HAVE_U_INTXX_T)
 		AC_MSG_RESULT(yes)
 	],
 	[AC_MSG_RESULT(no)]
 )

 AC_MSG_CHECKING([For uintXX_t types])
 AC_TRY_COMPILE(
 	[#include <sys/types.h>],
 	[uint16_t c; uint32_t d; c = 1235; d = 1235;],
 	[
 		AC_DEFINE(HAVE_UINTXX_T)
 		AC_MSG_RESULT(yes)
 	],
 	[AC_MSG_RESULT(no)]
 )

 AC_ARG_WITH(pam,
 	[  --without-pam           Disable PAM support ],
 	[
 		if test "x$withval" = "xno" ; then
 			no_pam=1
 			AC_DEFINE(DISABLE_PAM)
 		fi
 	]
 )

 if test -z "$no_pam" -a "x$ac_cv_header_security_pam_appl_h" = "xyes" ; then
 	AC_CHECK_LIB(dl, dlopen, , )
 	LIBS="$LIBS -lpam"
 	dnl Check PAM strerror arguments
 	AC_MSG_CHECKING([whether pam_strerror takes only one argument])
 	AC_TRY_COMPILE(
 		[
 			#include <stdlib.h>
 			#include <security/pam_appl.h>
 		],
 		[(void)pam_strerror((pam_handle_t *)NULL, -1);],
 		[AC_MSG_RESULT(no)],
 		[
 			AC_DEFINE(HAVE_OLD_PAM)
 			AC_MSG_RESULT(yes)
 		]
 	)
 fi

 AC_MSG_CHECKING([whether to build GNOME ssh-askpass])
 dnl Check whether user wants GNOME ssh-askpass
 AC_ARG_WITH(gnome-askpass,
 	[  --with-gnome-askpass    Build the GNOME passphrase requester (default=no)],
 	[
 		if test x$withval = xno ; then
 			GNOME_ASKPASS="";
 		else
 			GNOME_ASKPASS="gnome-ssh-askpass";
 		fi
 	])
 AC_SUBST(GNOME_ASKPASS)

 if test -z "$GNOME_ASKPASS" ; then
 	AC_MSG_RESULT(no)
 else
 	AC_MSG_RESULT(yes)
 fi

 dnl Check for user-specified random device
 AC_ARG_WITH(random,
 	[  --with-random=FILE      read randomness from FILE (default=/dev/urandom)],
 	[
 		RANDOM_POOL="$withval";
 		AC_DEFINE_UNQUOTED(RANDOM_POOL, "$RANDOM_POOL")
 	],
 	[
 		dnl Check for random device
 		AC_CHECK_FILE("/dev/urandom",
 			[
 				RANDOM_POOL="/dev/urandom";
 				AC_SUBST(RANDOM_POOL)
 				AC_DEFINE_UNQUOTED(RANDOM_POOL, "$RANDOM_POOL")
 			]
 		)
 	]
 )

 dnl Check for EGD pool file
 AC_ARG_WITH(egd-pool,
 	[  --with-egd-pool=FILE    read randomness from EGD pool FILE (default none)],
 	[
 		RANDOM_POOL="$withval";
 		AC_DEFINE(HAVE_EGD)
 		AC_SUBST(RANDOM_POOL)
 		AC_DEFINE_UNQUOTED(RANDOM_POOL, "$RANDOM_POOL")
 	]
 )

 dnl Make sure we have random number support
 if test -z "$RANDOM_POOL" -a -z "$EGD_POOL"; then
 	AC_MSG_ERROR([No random device found, and no EGD random pool specified])
 fi

 AC_MSG_CHECKING([whether utmp.h has ut_host field])
 AC_EGREP_HEADER(ut_host, utmp.h,
 	[AC_DEFINE(HAVE_HOST_IN_UTMP) AC_MSG_RESULT(yes); ],
 	[AC_MSG_RESULT(no)]
 )
 AC_MSG_CHECKING([whether utmpx.h has ut_host field])
 AC_EGREP_HEADER(ut_host, utmpx.h,
 	[AC_DEFINE(HAVE_HOST_IN_UTMPX) AC_MSG_RESULT(yes); ],
 	[AC_MSG_RESULT(no)]
 )
 AC_MSG_CHECKING([whether utmpx.h has syslen field])
 AC_EGREP_HEADER(syslen, utmpx.h,
 	[AC_DEFINE(HAVE_SYSLEN_IN_UTMPX) AC_MSG_RESULT(yes); ],
 	[AC_MSG_RESULT(no)]
 )
 AC_MSG_CHECKING([whether utmp.h has ut_pid field])
 AC_EGREP_HEADER(ut_pid, utmp.h,
 	[AC_DEFINE(HAVE_PID_IN_UTMP) AC_MSG_RESULT(yes); ],
 	[AC_MSG_RESULT(no)]
 )
 AC_MSG_CHECKING([whether utmp.h has ut_type field])
 AC_EGREP_HEADER(ut_type, utmp.h,
 	[AC_DEFINE(HAVE_TYPE_IN_UTMP) AC_MSG_RESULT(yes); ],
 	[AC_MSG_RESULT(no)]
 )
 AC_MSG_CHECKING([whether utmp.h has ut_tv field])
 AC_EGREP_HEADER(ut_tv, utmp.h,
 	[AC_DEFINE(HAVE_TV_IN_UTMP) AC_MSG_RESULT(yes); ],
 	[AC_MSG_RESULT(no)]
 )

 dnl Look for lastlog location
 AC_ARG_WITH(lastlog,
 	[  --with-lastlog=FILE     Location of lastlog file],
 	[
 		if test "x$withval" = "xno" ; then
 			AC_DEFINE(DISABLE_LASTLOG)
 		else
 			AC_DEFINE_UNQUOTED(LASTLOG_LOCATION, "$withval")
 		fi
 	],
 	[
 		AC_MSG_CHECKING([location of lastlog file])
 		for lastlog in /var/log/lastlog /var/adm/lastlog /etc/security/lastlog ; do
 			if test -f $lastlog ; then
 				gotlastlog="file"
 				break
 			fi
 			if test -d $lastlog ; then
 				gotlastlog="dir"
 				break
 			fi
 		done
 		if test -z "$gotlastlog" ; then
 			AC_MSG_RESULT(not found)
 			nolastlog=1
 		else
 			if test "x$gotlastlog" = "xdir" ; then
 				AC_MSG_RESULT(${lastlog}/)
 				AC_DEFINE(LASTLOG_IS_DIR)
 				AC_MSG_WARN([*** Directory-based lastlogs are not yet supported ***])
 				nolastlog=1
 			else
 				AC_MSG_RESULT($lastlog)
 				AC_DEFINE_UNQUOTED(LASTLOG_LOCATION, "$lastlog")
 			fi
 		fi
 	]
 )

 if test ! -z "$nolastlog" ; then
 	AC_MSG_WARN([*** Disabling lastlog support *** ])
 	AC_DEFINE(DISABLE_LASTLOG)
 fi

 AC_CHECK_FILE("/dev/ptmx", AC_DEFINE_UNQUOTED(HAVE_DEV_PTMX))
 AC_CHECK_FILE("/dev/ptc", AC_DEFINE_UNQUOTED(HAVE_DEV_PTS_AND_PTC))

 AC_MSG_CHECKING([whether libc defines __progname])
 AC_TRY_LINK([],
 	[extern char *__progname; printf("%s", __progname);],
 	[
 		AC_DEFINE(HAVE___PROGNAME)
 		AC_MSG_RESULT(yes)
 	],
 	[
 		AC_MSG_RESULT(no)
 	]
 )

 dnl Check whether user wants Kerberos support
 AC_ARG_WITH(kerberos4,
 	[  --with-kerberos4        Enable Kerberos 4 support],
 	[
 		AC_DEFINE(KRB4)
 		LIBS="$LIBS -lkrb"
 		CFLAGS="$CFLAGS -I/usr/include/kerberosIV"
 	]
 )

 dnl Check whether user wants AFS support
 AC_ARG_WITH(afs,
 	[  --with-afs              Enable AFS support],
 	[
 		AC_DEFINE(AFS)
 		LIBS="$LIBS -lkafs"
 	]
 )

 dnl Check whether user wants S/Key support
 AC_ARG_WITH(skey,
 	[  --with-skey             Enable S/Key support],
 	[
 		AC_DEFINE(SKEY)
 		LIBS="$LIBS -lskey"
 	]
 )

 dnl Check whether user wants TCP wrappers support
 AC_ARG_WITH(tcp-wrappers,
 	[  --with-tcp-wrappers     Enable tcpwrappers support],
 	[
 		AC_DEFINE(LIBWRAP)
 		LIBWRAP="-lwrap"
 	]
 )
 AC_SUBST(LIBWRAP)

 dnl Check whether to enable MD5 passwords
 AC_ARG_WITH(md5-passwords,
 	[  --with-md5-passwords    Enable use of MD5 passwords],
 	[AC_DEFINE(HAVE_MD5_PASSWORDS)]
 )

 dnl Check whether to enable utmpx support
 AC_ARG_WITH(utmpx,
 	[  --with-utmpx            Enable utmpx support],
 	[
 		if test "x$withval" != "xno" ; then
 			AC_DEFINE(USE_UTMPX)
 		fi
 	]
 )

 dnl Whether to disable shadow password support
 AC_ARG_WITH(shadow,
 	[  --without-shadow        Disable shadow password support],
 	[
 		if test "x$withval" = "xno" ; then
 			AC_DEFINE(DISABLE_SHADOW)
 		fi
 	]
 )

 dnl Use ip address instead of hostname in $DISPLAY
 AC_ARG_WITH(ipaddr-display,
 	[  --with-ipaddr-display   Use ip address instead of hostname in \$DISPLAY],
 	[
 		if test "x$withval" = "xno" ; then
 			AC_DEFINE(IPADDR_IN_DISPLAY)
 		fi
 	]
 )

 AC_ARG_WITH(path,
 	[  --with-default-path=PATH Specify default \$PATH environment for server],
 	[
 		if test "x$withval" != "xno" ; then
 			AC_DEFINE_UNQUOTED(USER_PATH, $withval")
 		fi
 	]
 )

 dnl Check for mail directory (last resort if we cannot get it from headers)
 if test ! -z "$MAIL" ; then
 	maildir=`dirname $MAIL`
 	AC_DEFINE_UNQUOTED(MAIL_DIRECTORY, "$maildir")
 fi

 AC_OUTPUT(Makefile)
	AC_INIT(ssh.c)

	AC_CONFIG_HEADER(config.h)
	AC_CANONICAL_HOST

	dnl Checks for programs.
	AC_PROG_CC
	AC_PROG_CPP
	AC_PROG_RANLIB
	AC_PROG_INSTALL
	AC_CHECK_PROG(AR, ar, ar)
	AC_PATH_PROG(xauth_path, xauth)

	dnl Use ip address instead of hostname in $DISPLAY
	AC_ARG_WITH(rsh,
	[ --with-rsh=PATH Specify path to remote shell program ],
	[
	AC_DEFINE_UNQUOTED(RSH_PATH, "$withval")
	],
	[
	AC_PATH_PROG(rsh_path, rsh)
	]
	)

	if test ! -z "$xauth_path" ; then
	AC_DEFINE_UNQUOTED(XAUTH_PATH, "$xauth_path")
	fi
	if test ! -z "$rsh_path" ; then
	AC_DEFINE_UNQUOTED(RSH_PATH, "$rsh_path")
	fi

	dnl Checks for compiler characteristics
	if test "$GCC" = "yes"; then CFLAGS="$CFLAGS -Wall"; fi

	AC_C_INLINE

	dnl Check for some target-specific stuff
	case "$host" in
	--hpux10*)
	if test -z "$GCC"; then
	CFLAGS="$CFLAGS -Aa"
	fi
	CFLAGS="$CFLAGS -D_HPUX_SOURCE"
	AC_DEFINE(IPADDR_IN_DISPLAY)
	AC_DEFINE(USE_UTMPX)
	AC_MSG_CHECKING(for HPUX trusted system password database)
	if test -f /tcb/files/auth/system/default; then
	AC_MSG_RESULT(yes)
	AC_DEFINE(HAVE_HPUX_TRUSTED_SYSTEM_PW)
	LIBS="$LIBS -lsec"
	else
	AC_MSG_RESULT(no)
	AC_DEFINE(DISABLE_SHADOW)
	fi
	;;
	--solaris*)
	AC_DEFINE(USE_UTMPX)
	;;
	--irix5*)
	AC_DEFINE(CRYPT_H_BREAKS_BUILD)
	# CFLAGS="$CFLAGS -shared"
	no_libsocket=1
	no_libnsl=1
	;;
	esac

	dnl Check for OpenSSL/SSLeay directories.
	AC_MSG_CHECKING([for OpenSSL/SSLeay directory])
	for ssldir in /usr /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local $prefix /usr/pkg ; do
	if test -f "$ssldir/include/openssl/crypto.h"; then
	AC_DEFINE(HAVE_OPENSSL)
	GOT_SSL="yes"
	break
	fi
	if test -f "$ssldir/include/ssl/crypto.h"; then
	AC_DEFINE(HAVE_SSL)
	GOT_SSL="yes"
	break
	fi
	done
	if test -z "$GOT_SSL" ; then
	AC_MSG_ERROR([Could not find SSLeay / OpenSSL libraries, please install])
	fi
	AC_SUBST(ssldir)
	AC_DEFINE_UNQUOTED(ssldir, "$ssldir")
	if test "$ssldir" != "/usr"; then
	CFLAGS="$CFLAGS -I$ssldir/include"
	LDFLAGS="$LDFLAGS -L$ssldir/lib"
	fi
	AC_MSG_RESULT($ssldir)

	dnl Check for RSAref library.
	AC_MSG_CHECKING([for RSAref library])
	saved_LIBS="$LIBS"
	LIBS="$saved_LIBS -lRSAglue -lrsaref"
	AC_TRY_LINK([], [],
	[AC_MSG_RESULT(yes); ],
	[AC_MSG_RESULT(no)]; LIBS="$saved_LIBS")

	dnl Checks for libraries.
	AC_CHECK_LIB(crypto, CRYPTO_lock, ,AC_MSG_ERROR([* libcrypto missing - please install first *]))
	AC_CHECK_LIB(z, deflate, ,AC_MSG_ERROR([* zlib missing - please install first *]))
	AC_CHECK_LIB(util, login, AC_DEFINE(HAVE_LIBUTIL_LOGIN) LIBS="$LIBS -lutil")
	AC_CHECK_LIB(crypt, crypt, , )

	if test -z "$no_libsocket" ; then
	AC_CHECK_LIB(nsl, yp_match, , )
	fi
	if test -z "$no_libnsl" ; then
	AC_CHECK_LIB(socket, main, , )
	fi

	dnl Checks for header files.
	AC_CHECK_HEADERS(bstring.h crypt.h endian.h lastlog.h login.h maillock.h netdb.h netgroup.h paths.h poll.h pty.h shadow.h security/pam_appl.h sys/bsdtty.h sys/cdefs.h sys/poll.h sys/select.h sys/stropts.h sys/time.h sys/ttcompat.h util.h utmp.h utmpx.h)

	dnl Checks for library functions.
	AC_CHECK_FUNCS(arc4random getpagesize _getpty innetgr md5_crypt mkdtemp openpty setenv seteuid setlogin setproctitle setreuid snprintf strlcat strlcpy updwtmpx vsnprintf)

	AC_CHECK_FUNC(login,
	[AC_DEFINE(HAVE_LOGIN)],
	[AC_CHECK_LIB(bsd, login, [LIBS="$LIBS -lbsd"; AC_DEFINE(HAVE_LOGIN)])]
	)

	AC_CHECK_FUNC(daemon,
	[AC_DEFINE(HAVE_DAEMON)],
	[AC_CHECK_LIB(bsd, daemon, [LIBS="$LIBS -lbsd"; AC_DEFINE(HAVE_DAEMON)])]
	)

	dnl Checks for data types
	AC_CHECK_SIZEOF(short int, 2)
	AC_CHECK_SIZEOF(int, 4)
	AC_CHECK_SIZEOF(long int, 4)
	AC_CHECK_SIZEOF(long long int, 8)

	dnl More checks for data types
	AC_MSG_CHECKING([for quad_t])
	AC_TRY_COMPILE(
	[#include <sys/types.h>],
	[quad_t a; a = 1235;],
	[
	AC_DEFINE(HAVE_QUAD_T)
	AC_MSG_RESULT(yes)
	],
	[AC_MSG_RESULT(no)]
	)

	AC_MSG_CHECKING([for intXX_t types])
	AC_TRY_COMPILE(
	[#include <sys/types.h>],
	[int16_t a; int32_t b; a = 1235; b = 1235;],
	[
	AC_DEFINE(HAVE_INTXX_T)
	AC_MSG_RESULT(yes)
	],
	[AC_MSG_RESULT(no)]
	)

	AC_MSG_CHECKING([for u_intXX_t types])
	AC_TRY_COMPILE(
	[#include <sys/types.h>],
	[u_int16_t c; u_int32_t d; c = 1235; d = 1235;],
	[
	AC_DEFINE(HAVE_U_INTXX_T)
	AC_MSG_RESULT(yes)
	],
	[AC_MSG_RESULT(no)]
	)

	AC_MSG_CHECKING([For uintXX_t types])
	AC_TRY_COMPILE(
	[#include <sys/types.h>],
	[uint16_t c; uint32_t d; c = 1235; d = 1235;],
	[
	AC_DEFINE(HAVE_UINTXX_T)
	AC_MSG_RESULT(yes)
	],
	[AC_MSG_RESULT(no)]
	)

	AC_ARG_WITH(pam,
	[ --without-pam Disable PAM support ],
	[
	if test "x$withval" = "xno" ; then
	no_pam=1
	AC_DEFINE(DISABLE_PAM)
	fi
	]
	)

	if test -z "$no_pam" -a "x$ac_cv_header_security_pam_appl_h" = "xyes" ; then
	AC_CHECK_LIB(dl, dlopen, , )
	LIBS="$LIBS -lpam"
	dnl Check PAM strerror arguments
	AC_MSG_CHECKING([whether pam_strerror takes only one argument])
	AC_TRY_COMPILE(
	[
	#include <stdlib.h>
	#include <security/pam_appl.h>
	],
	[(void)pam_strerror((pam_handle_t *)NULL, -1);],
	[AC_MSG_RESULT(no)],
	[
	AC_DEFINE(HAVE_OLD_PAM)
	AC_MSG_RESULT(yes)
	]
	)
	fi

	AC_MSG_CHECKING([whether to build GNOME ssh-askpass])
	dnl Check whether user wants GNOME ssh-askpass
	AC_ARG_WITH(gnome-askpass,
	[ --with-gnome-askpass Build the GNOME passphrase requester (default=no)],
	[
	if test x$withval = xno ; then
	GNOME_ASKPASS="";
	else
	GNOME_ASKPASS="gnome-ssh-askpass";
	fi
	])
	AC_SUBST(GNOME_ASKPASS)

	if test -z "$GNOME_ASKPASS" ; then
	AC_MSG_RESULT(no)
	else
	AC_MSG_RESULT(yes)
	fi

	dnl Check for user-specified random device
	AC_ARG_WITH(random,
	[ --with-random=FILE read randomness from FILE (default=/dev/urandom)],
	[
	RANDOM_POOL="$withval";
	AC_DEFINE_UNQUOTED(RANDOM_POOL, "$RANDOM_POOL")
	],
	[
	dnl Check for random device
	AC_CHECK_FILE("/dev/urandom",
	[
	RANDOM_POOL="/dev/urandom";
	AC_SUBST(RANDOM_POOL)
	AC_DEFINE_UNQUOTED(RANDOM_POOL, "$RANDOM_POOL")
	]
	)
	]
	)

	dnl Check for EGD pool file
	AC_ARG_WITH(egd-pool,
	[ --with-egd-pool=FILE read randomness from EGD pool FILE (default none)],
	[
	RANDOM_POOL="$withval";
	AC_DEFINE(HAVE_EGD)
	AC_SUBST(RANDOM_POOL)
	AC_DEFINE_UNQUOTED(RANDOM_POOL, "$RANDOM_POOL")
	]
	)

	dnl Make sure we have random number support
	if test -z "$RANDOM_POOL" -a -z "$EGD_POOL"; then
	AC_MSG_ERROR([No random device found, and no EGD random pool specified])
	fi

	AC_MSG_CHECKING([whether utmp.h has ut_host field])
	AC_EGREP_HEADER(ut_host, utmp.h,
	[AC_DEFINE(HAVE_HOST_IN_UTMP) AC_MSG_RESULT(yes); ],
	[AC_MSG_RESULT(no)]
	)
	AC_MSG_CHECKING([whether utmpx.h has ut_host field])
	AC_EGREP_HEADER(ut_host, utmpx.h,
	[AC_DEFINE(HAVE_HOST_IN_UTMPX) AC_MSG_RESULT(yes); ],
	[AC_MSG_RESULT(no)]
	)
	AC_MSG_CHECKING([whether utmpx.h has syslen field])
	AC_EGREP_HEADER(syslen, utmpx.h,
	[AC_DEFINE(HAVE_SYSLEN_IN_UTMPX) AC_MSG_RESULT(yes); ],
	[AC_MSG_RESULT(no)]
	)
	AC_MSG_CHECKING([whether utmp.h has ut_pid field])
	AC_EGREP_HEADER(ut_pid, utmp.h,
	[AC_DEFINE(HAVE_PID_IN_UTMP) AC_MSG_RESULT(yes); ],
	[AC_MSG_RESULT(no)]
	)
	AC_MSG_CHECKING([whether utmp.h has ut_type field])
	AC_EGREP_HEADER(ut_type, utmp.h,
	[AC_DEFINE(HAVE_TYPE_IN_UTMP) AC_MSG_RESULT(yes); ],
	[AC_MSG_RESULT(no)]
	)
	AC_MSG_CHECKING([whether utmp.h has ut_tv field])
	AC_EGREP_HEADER(ut_tv, utmp.h,
	[AC_DEFINE(HAVE_TV_IN_UTMP) AC_MSG_RESULT(yes); ],
	[AC_MSG_RESULT(no)]
	)

	dnl Look for lastlog location
	AC_ARG_WITH(lastlog,
	[ --with-lastlog=FILE Location of lastlog file],
	[
	if test "x$withval" = "xno" ; then
	AC_DEFINE(DISABLE_LASTLOG)
	else
	AC_DEFINE_UNQUOTED(LASTLOG_LOCATION, "$withval")
	fi
	],
	[
	AC_MSG_CHECKING([location of lastlog file])
	for lastlog in /var/log/lastlog /var/adm/lastlog /etc/security/lastlog ; do
	if test -f $lastlog ; then
	gotlastlog="file"
	break
	fi
	if test -d $lastlog ; then
	gotlastlog="dir"
	break
	fi
	done
	if test -z "$gotlastlog" ; then
	AC_MSG_RESULT(not found)
	nolastlog=1
	else
	if test "x$gotlastlog" = "xdir" ; then
	AC_MSG_RESULT(${lastlog}/)
	AC_DEFINE(LASTLOG_IS_DIR)
	AC_MSG_WARN([* Directory-based lastlogs are not yet supported *])
	nolastlog=1
	else
	AC_MSG_RESULT($lastlog)
	AC_DEFINE_UNQUOTED(LASTLOG_LOCATION, "$lastlog")
	fi
	fi
	]
	)

	if test ! -z "$nolastlog" ; then
	AC_MSG_WARN([* Disabling lastlog support * ])
	AC_DEFINE(DISABLE_LASTLOG)
	fi

	AC_CHECK_FILE("/dev/ptmx", AC_DEFINE_UNQUOTED(HAVE_DEV_PTMX))
	AC_CHECK_FILE("/dev/ptc", AC_DEFINE_UNQUOTED(HAVE_DEV_PTS_AND_PTC))

	AC_MSG_CHECKING([whether libc defines __progname])
	AC_TRY_LINK([],
	[extern char *__progname; printf("%s", __progname);],
	[
	AC_DEFINE(HAVE___PROGNAME)
	AC_MSG_RESULT(yes)
	],
	[
	AC_MSG_RESULT(no)
	]
	)

	dnl Check whether user wants Kerberos support
	AC_ARG_WITH(kerberos4,
	[ --with-kerberos4 Enable Kerberos 4 support],
	[
	AC_DEFINE(KRB4)
	LIBS="$LIBS -lkrb"
	CFLAGS="$CFLAGS -I/usr/include/kerberosIV"
	]
	)

	dnl Check whether user wants AFS support
	AC_ARG_WITH(afs,
	[ --with-afs Enable AFS support],
	[
	AC_DEFINE(AFS)
	LIBS="$LIBS -lkafs"
	]
	)

	dnl Check whether user wants S/Key support
	AC_ARG_WITH(skey,
	[ --with-skey Enable S/Key support],
	[
	AC_DEFINE(SKEY)
	LIBS="$LIBS -lskey"
	]
	)

	dnl Check whether user wants TCP wrappers support
	AC_ARG_WITH(tcp-wrappers,
	[ --with-tcp-wrappers Enable tcpwrappers support],
	[
	AC_DEFINE(LIBWRAP)
	LIBWRAP="-lwrap"
	]
	)
	AC_SUBST(LIBWRAP)

	dnl Check whether to enable MD5 passwords
	AC_ARG_WITH(md5-passwords,
	[ --with-md5-passwords Enable use of MD5 passwords],
	[AC_DEFINE(HAVE_MD5_PASSWORDS)]
	)

	dnl Check whether to enable utmpx support
	AC_ARG_WITH(utmpx,
	[ --with-utmpx Enable utmpx support],
	[
	if test "x$withval" != "xno" ; then
	AC_DEFINE(USE_UTMPX)
	fi
	]
	)

	dnl Whether to disable shadow password support
	AC_ARG_WITH(shadow,
	[ --without-shadow Disable shadow password support],
	[
	if test "x$withval" = "xno" ; then
	AC_DEFINE(DISABLE_SHADOW)
	fi
	]
	)

	dnl Use ip address instead of hostname in $DISPLAY
	AC_ARG_WITH(ipaddr-display,
	[ --with-ipaddr-display Use ip address instead of hostname in \$DISPLAY],
	[
	if test "x$withval" = "xno" ; then
	AC_DEFINE(IPADDR_IN_DISPLAY)
	fi
	]
	)

	AC_ARG_WITH(path,
	[ --with-default-path=PATH Specify default \$PATH environment for server],
	[
	if test "x$withval" != "xno" ; then
	AC_DEFINE_UNQUOTED(USER_PATH, $withval")
	fi
	]
	)

	dnl Check for mail directory (last resort if we cannot get it from headers)
	if test ! -z "$MAIL" ; then
	maildir=`dirname $MAIL`
	AC_DEFINE_UNQUOTED(MAIL_DIRECTORY, "$maildir")
	fi

	AC_OUTPUT(Makefile)