configure.ac

OpenSSH 是 SSH （Secure SHell） 协议的免费开源实现。它用安全、加密的网络连接工具代替了 telnet、ftp、 rlogin、rsh 和 rcp 工具。OpenSSH 支持

# $Id: configure.ac,v 1.250 2005/03/07 09:21:37 tim 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(OpenSSH, Portable)
AC_CONFIG_SRCDIR([ssh.c])

AC_CONFIG_HEADER(config.h)
AC_PROG_CC
AC_CANONICAL_HOST
AC_C_BIGENDIAN

# Checks for programs.
AC_PROG_AWK
AC_PROG_CPP
AC_PROG_RANLIB
AC_PROG_INSTALL
AC_PATH_PROG(AR, ar)
AC_PATH_PROG(CAT, cat)
AC_PATH_PROG(KILL, kill)
AC_PATH_PROGS(PERL, perl5 perl)
AC_PATH_PROG(SED, sed)
AC_SUBST(PERL)
AC_PATH_PROG(ENT, ent)
AC_SUBST(ENT)
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_SUBST(TEST_SHELL,sh)

dnl for buildpkg.sh
AC_PATH_PROG(PATH_GROUPADD_PROG, groupadd, groupadd,
	[/usr/sbin${PATH_SEPARATOR}/etc])
AC_PATH_PROG(PATH_USERADD_PROG, useradd, useradd,
	[/usr/sbin${PATH_SEPARATOR}/etc])
AC_CHECK_PROG(MAKE_PACKAGE_SUPPORTED, pkgmk, yes, no)

# System features
AC_SYS_LARGEFILE

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

# Use LOGIN_PROGRAM from environment if possible
if test ! -z "$LOGIN_PROGRAM" ; then
	AC_DEFINE_UNQUOTED(LOGIN_PROGRAM_FALLBACK, "$LOGIN_PROGRAM")
else
	# Search for login
	AC_PATH_PROG(LOGIN_PROGRAM_FALLBACK, login)
	if test ! -z "$LOGIN_PROGRAM_FALLBACK" ; then
		AC_DEFINE_UNQUOTED(LOGIN_PROGRAM_FALLBACK, "$LOGIN_PROGRAM_FALLBACK")
	fi
fi

AC_PATH_PROG(PATH_PASSWD_PROG, passwd)
if test ! -z "$PATH_PASSWD_PROG" ; then
	AC_DEFINE_UNQUOTED(_PATH_PASSWD_PROG, "$PATH_PASSWD_PROG")
fi

if test -z "$LD" ; then
	LD=$CC
fi
AC_SUBST(LD)
	
AC_C_INLINE
if test "$GCC" = "yes" || test "$GCC" = "egcs"; then
	CFLAGS="$CFLAGS -Wall -Wpointer-arith -Wno-uninitialized"
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
	]
)

# Check for some target-specific stuff
case "$host" in
*-*-aix*)
	AC_MSG_CHECKING([how to specify blibpath for linker ($LD)])
	if (test -z "$blibpath"); then
		blibpath="/usr/lib:/lib"
	fi
	saved_LDFLAGS="$LDFLAGS"
	for tryflags in -blibpath: -Wl,-blibpath: -Wl,-rpath, ;do
		if (test -z "$blibflags"); then
			LDFLAGS="$saved_LDFLAGS $tryflags$blibpath"
			AC_TRY_LINK([], [], [blibflags=$tryflags])
		fi
	done
	if (test -z "$blibflags"); then
		AC_MSG_RESULT(not found)
		AC_MSG_ERROR([*** must be able to specify blibpath on AIX - check config.log])
	else
		AC_MSG_RESULT($blibflags)
	fi
	LDFLAGS="$saved_LDFLAGS"
	dnl Check for authenticate.  Might be in libs.a on older AIXes
	AC_CHECK_FUNC(authenticate, [AC_DEFINE(WITH_AIXAUTHENTICATE)],
		[AC_CHECK_LIB(s,authenticate,
			[ AC_DEFINE(WITH_AIXAUTHENTICATE)
				LIBS="$LIBS -ls"
			])
		])
	dnl Check for various auth function declarations in headers.
	AC_CHECK_DECLS([authenticate, loginrestrictions, loginsuccess,
	    passwdexpired], , , [#include <usersec.h>])
	dnl Check if loginfailed is declared and takes 4 arguments (AIX >= 5.2)
	AC_CHECK_DECLS(loginfailed,
		 [AC_MSG_CHECKING(if loginfailed takes 4 arguments)
		  AC_TRY_COMPILE(
			[#include <usersec.h>],
			[(void)loginfailed("user","host","tty",0);],
			[AC_MSG_RESULT(yes)
			 AC_DEFINE(AIX_LOGINFAILED_4ARG)],
			[AC_MSG_RESULT(no)]
		)],
		[],
		[#include <usersec.h>]
	)
	AC_CHECK_FUNCS(setauthdb)
	check_for_aix_broken_getaddrinfo=1
	AC_DEFINE(BROKEN_REALPATH)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	dnl AIX handles lastlog as part of its login message
	AC_DEFINE(DISABLE_LASTLOG)
	AC_DEFINE(LOGIN_NEEDS_UTMPX)
	AC_DEFINE(SPT_TYPE,SPT_REUSEARGV)
	;;
*-*-cygwin*)
	check_for_libcrypt_later=1
	LIBS="$LIBS /usr/lib/textmode.o"
	AC_DEFINE(HAVE_CYGWIN)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(DISABLE_SHADOW)
	AC_DEFINE(IP_TOS_IS_BROKEN)
	AC_DEFINE(NO_X11_UNIX_SOCKETS)
	AC_DEFINE(NO_IPPORT_RESERVED_CONCEPT)
	AC_DEFINE(DISABLE_FD_PASSING)
	;;
*-*-dgux*)
	AC_DEFINE(IP_TOS_IS_BROKEN)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	;;
*-*-darwin*)
	AC_MSG_CHECKING(if we have working getaddrinfo)
	AC_TRY_RUN([#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)],
	[AC_MSG_RESULT(assume it is working)])
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	AC_DEFINE_UNQUOTED(BIND_8_COMPAT, 1)
	;;
*-*-hpux10.26)
	if test -z "$GCC"; then
		CFLAGS="$CFLAGS -Ae"
	fi
	CPPFLAGS="$CPPFLAGS -D_HPUX_SOURCE -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED=1"
	IPADDR_IN_DISPLAY=yes
	AC_DEFINE(HAVE_SECUREWARE)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(LOGIN_NO_ENDOPT)
	AC_DEFINE(LOGIN_NEEDS_UTMPX)
	AC_DEFINE(LOCKED_PASSWD_STRING, "*")
	AC_DEFINE(SPT_TYPE,SPT_PSTAT)
	LIBS="$LIBS -lsec -lsecpw"
	AC_CHECK_LIB(xnet, t_error, ,AC_MSG_ERROR([*** -lxnet needed on HP-UX - check config.log ***]))
	disable_ptmx_check=yes
	;;
*-*-hpux10*)
	if test -z "$GCC"; then
		CFLAGS="$CFLAGS -Ae"
	fi
	CPPFLAGS="$CPPFLAGS -D_HPUX_SOURCE -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED=1"
	IPADDR_IN_DISPLAY=yes
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(LOGIN_NO_ENDOPT)
	AC_DEFINE(LOGIN_NEEDS_UTMPX)
	AC_DEFINE(LOCKED_PASSWD_STRING, "*")
	AC_DEFINE(SPT_TYPE,SPT_PSTAT)
	LIBS="$LIBS -lsec"
	AC_CHECK_LIB(xnet, t_error, ,AC_MSG_ERROR([*** -lxnet needed on HP-UX - check config.log ***]))
	;;
*-*-hpux11*)
	CPPFLAGS="$CPPFLAGS -D_HPUX_SOURCE -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED=1"
	IPADDR_IN_DISPLAY=yes
	AC_DEFINE(PAM_SUN_CODEBASE)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(LOGIN_NO_ENDOPT)
	AC_DEFINE(LOGIN_NEEDS_UTMPX)
	AC_DEFINE(DISABLE_UTMP)
	AC_DEFINE(LOCKED_PASSWD_STRING, "*")
	AC_DEFINE(SPT_TYPE,SPT_PSTAT)
	AC_DEFINE(USE_BTMP, 1, [Use btmp to log bad logins])
	check_for_hpux_broken_getaddrinfo=1
	check_for_conflicting_getspnam=1
	LIBS="$LIBS -lsec"
	AC_CHECK_LIB(xnet, t_error, ,AC_MSG_ERROR([*** -lxnet needed on HP-UX - check config.log ***]))
	;;
*-*-irix5*)
	PATH="$PATH:/usr/etc"
	AC_DEFINE(BROKEN_INET_NTOA)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	AC_DEFINE(WITH_ABBREV_NO_TTY)
	AC_DEFINE(LOCKED_PASSWD_STRING, "*LK*")
	;;
*-*-irix6*)
	PATH="$PATH:/usr/etc"
	AC_DEFINE(WITH_IRIX_ARRAY)
	AC_DEFINE(WITH_IRIX_PROJECT)
	AC_DEFINE(WITH_IRIX_AUDIT)
	AC_CHECK_FUNC(jlimit_startjob, [AC_DEFINE(WITH_IRIX_JOBS)])
	AC_DEFINE(BROKEN_INET_NTOA)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	AC_DEFINE(BROKEN_UPDWTMPX)
	AC_DEFINE(WITH_ABBREV_NO_TTY)
	AC_DEFINE(LOCKED_PASSWD_STRING, "*LK*")
	;;
*-*-linux*)
	no_dev_ptmx=1
	check_for_libcrypt_later=1
	check_for_openpty_ctty_bug=1
	AC_DEFINE(DONT_TRY_OTHER_AF)
	AC_DEFINE(PAM_TTY_KLUDGE)
	AC_DEFINE(LOCKED_PASSWD_PREFIX, "!")
	AC_DEFINE(SPT_TYPE,SPT_REUSEARGV)
	AC_DEFINE(LINK_OPNOTSUPP_ERRNO, EPERM)
	AC_DEFINE(_PATH_BTMP, "/var/log/btmp", [log for bad login attempts])
	AC_DEFINE(USE_BTMP, 1, [Use btmp to log bad logins])
	inet6_default_4in6=yes
	case `uname -r` in
	1.*|2.0.*)
		AC_DEFINE(BROKEN_CMSG_TYPE)
		;;
	esac
	;;
mips-sony-bsd|mips-sony-newsos4)
	AC_DEFINE(HAVE_NEWS4)
	SONY=1
	;;
*-*-netbsd*)
	check_for_libcrypt_before=1
	if test "x$withval" != "xno" ; then	
		need_dash_r=1
	fi
	;;
*-*-freebsd*)
	check_for_libcrypt_later=1
	;;
*-*-bsdi*)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	;;
*-next-*)
	conf_lastlog_location="/usr/adm/lastlog"
	conf_utmp_location=/etc/utmp
	conf_wtmp_location=/usr/adm/wtmp
	MAIL=/usr/spool/mail
	AC_DEFINE(HAVE_NEXT)
	AC_DEFINE(BROKEN_REALPATH)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(BROKEN_SAVED_UIDS)
	;;
*-*-solaris*)
	if test "x$withval" != "xno" ; then	
		need_dash_r=1
	fi
	AC_DEFINE(PAM_SUN_CODEBASE)
	AC_DEFINE(LOGIN_NEEDS_UTMPX)
	AC_DEFINE(LOGIN_NEEDS_TERM)
	AC_DEFINE(PAM_TTY_KLUDGE)
	AC_DEFINE(SSHPAM_CHAUTHTOK_NEEDS_RUID)
	AC_DEFINE(LOCKED_PASSWD_STRING, "*LK*")
	# Pushing STREAMS modules will cause sshd to acquire a controlling tty.
	AC_DEFINE(SSHD_ACQUIRES_CTTY)
	external_path_file=/etc/default/login
	# hardwire lastlog location (can't detect it on some versions)
	conf_lastlog_location="/var/adm/lastlog"
	AC_MSG_CHECKING(for obsolete utmp and wtmp in solaris2.x)
	sol2ver=`echo "$host"| sed -e 's/.*[[0-9]]\.//'`
	if test "$sol2ver" -ge 8; then
		AC_MSG_RESULT(yes)
		AC_DEFINE(DISABLE_UTMP)
		AC_DEFINE(DISABLE_WTMP)
	else
		AC_MSG_RESULT(no)
	fi
	;;
*-*-sunos4*)
	CPPFLAGS="$CPPFLAGS -DSUNOS4"
	AC_CHECK_FUNCS(getpwanam)
	AC_DEFINE(PAM_SUN_CODEBASE)
	conf_utmp_location=/etc/utmp
	conf_wtmp_location=/var/adm/wtmp
	conf_lastlog_location=/var/adm/lastlog
	AC_DEFINE(USE_PIPES)
	;;
*-ncr-sysv*)
	LIBS="$LIBS -lc89"
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(SSHD_ACQUIRES_CTTY)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	;;
*-sni-sysv*)
	# /usr/ucblib MUST NOT be searched on ReliantUNIX
	AC_CHECK_LIB(dl, dlsym, ,)
	# -lresolv needs to be at then end of LIBS or DNS lookups break
	AC_CHECK_LIB(res_query, resolv, [ LIBS="$LIBS -lresolv" ])
	IPADDR_IN_DISPLAY=yes
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(IP_TOS_IS_BROKEN)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	AC_DEFINE(SSHD_ACQUIRES_CTTY)
	external_path_file=/etc/default/login
	# /usr/ucblib/libucb.a no longer needed on ReliantUNIX
	# Attention: always take care to bind libsocket and libnsl before libc,
	# otherwise you will find lots of "SIOCGPGRP errno 22" on syslog
	;;
# UnixWare 1.x, UnixWare 2.x, and others based on code from Univel.
*-*-sysv4.2*)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	;;
# UnixWare 7.x, OpenUNIX 8
*-*-sysv5*)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	;;
*-*-sysv*)
	;;
# SCO UNIX and OEM versions of SCO UNIX
*-*-sco3.2v4*)
	AC_MSG_ERROR("This Platform is no longer supported.")
	;;
# SCO OpenServer 5.x
*-*-sco3.2v5*)
	if test -z "$GCC"; then
		CFLAGS="$CFLAGS -belf"
	fi
	LIBS="$LIBS -lprot -lx -ltinfo -lm"
	no_dev_ptmx=1
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(HAVE_SECUREWARE)
	AC_DEFINE(DISABLE_SHADOW)
	AC_DEFINE(DISABLE_FD_PASSING)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	AC_DEFINE(WITH_ABBREV_NO_TTY)
	AC_DEFINE(BROKEN_UPDWTMPX)
	AC_DEFINE(PASSWD_NEEDS_USERNAME, 1, [must supply username to passwd])
	AC_CHECK_FUNCS(getluid setluid)
	MANTYPE=man
	TEST_SHELL=ksh
	;;
*-*-unicosmk*)
	AC_DEFINE(NO_SSH_LASTLOG)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(DISABLE_FD_PASSING)
	LDFLAGS="$LDFLAGS"
	LIBS="$LIBS -lgen -lrsc -lshare -luex -lacm"
	MANTYPE=cat
	;;
*-*-unicosmp*)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	AC_DEFINE(WITH_ABBREV_NO_TTY)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(DISABLE_FD_PASSING)
	LDFLAGS="$LDFLAGS"
	LIBS="$LIBS -lgen -lacid -ldb"
	MANTYPE=cat
	;;
*-*-unicos*)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(DISABLE_FD_PASSING)
	AC_DEFINE(NO_SSH_LASTLOG)
	LDFLAGS="$LDFLAGS -Wl,-Dmsglevel=334:fatal"
	LIBS="$LIBS -lgen -lrsc -lshare -luex -lacm"
	MANTYPE=cat
	;;
*-dec-osf*)
	AC_MSG_CHECKING(for Digital Unix SIA)
	no_osfsia=""
	AC_ARG_WITH(osfsia,
		[  --with-osfsia           Enable Digital Unix SIA],
		[
			if test "x$withval" = "xno" ; then
				AC_MSG_RESULT(disabled)
				no_osfsia=1
			fi
		],
	)
	if test -z "$no_osfsia" ; then
		if test -f /etc/sia/matrix.conf; then
			AC_MSG_RESULT(yes)
			AC_DEFINE(HAVE_OSF_SIA)
			AC_DEFINE(DISABLE_LOGIN)
			AC_DEFINE(DISABLE_FD_PASSING)
			LIBS="$LIBS -lsecurity -ldb -lm -laud"
		else
			AC_MSG_RESULT(no)
			AC_DEFINE(LOCKED_PASSWD_SUBSTR, "Nologin")
		fi
	fi
	AC_DEFINE(BROKEN_GETADDRINFO)
	AC_DEFINE(SETEUID_BREAKS_SETUID)
	AC_DEFINE(BROKEN_SETREUID)
	AC_DEFINE(BROKEN_SETREGID)
	;;

*-*-nto-qnx)
	AC_DEFINE(USE_PIPES)
	AC_DEFINE(NO_X11_UNIX_SOCKETS)
	AC_DEFINE(MISSING_NFDBITS)
	AC_DEFINE(MISSING_HOWMANY)
	AC_DEFINE(MISSING_FD_MASK)
	;;
esac

# Allow user to specify flags
AC_ARG_WITH(cflags,
	[  --with-cflags           Specify additional flags to pass to compiler],
	[
		if test "x$withval" != "xno" ; then
			CFLAGS="$CFLAGS $withval"
		fi
	]	
)
AC_ARG_WITH(cppflags,
	[  --with-cppflags         Specify additional flags to pass to preprocessor] ,
	[
		if test "x$withval" != "xno"; then
			CPPFLAGS="$CPPFLAGS $withval"
		fi
	]
)
AC_ARG_WITH(ldflags,
	[  --with-ldflags          Specify additional flags to pass to linker],
	[
		if test "x$withval" != "xno" ; then
			LDFLAGS="$LDFLAGS $withval"
		fi
	]	
)
AC_ARG_WITH(libs,
	[  --with-libs             Specify additional libraries to link with],
	[
		if test "x$withval" != "xno" ; then
			LIBS="$LIBS $withval"
		fi
	]	
)

AC_MSG_CHECKING(compiler and flags for sanity)
AC_RUN_IFELSE(
	[AC_LANG_SOURCE([
#include <stdio.h>
int main(){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]) ]
)

# Checks for header files.
AC_CHECK_HEADERS(bstring.h crypt.h dirent.h endian.h features.h \