]> andersk Git - openssh.git/blobdiff - configure.ac
- (dtucker) [configure.ac] Bug #693: uid swapping issues on NCR MP-RAS.
[openssh.git] / configure.ac
index b2b6a71f4bf10206dc080ec585a3d6d5565637ed..b7de70fd530b3a6cd1439a37bf6e7e88fdb0904a 100644 (file)
@@ -9,6 +9,7 @@ AC_CANONICAL_HOST
 AC_C_BIGENDIAN
 
 # Checks for programs.
+AC_PROG_AWK
 AC_PROG_CPP
 AC_PROG_RANLIB
 AC_PROG_INSTALL
@@ -54,7 +55,6 @@ fi
 # Check for some target-specific stuff
 case "$host" in
 *-*-aix*)
-       AFS_LIBS="-lld"
        CPPFLAGS="$CPPFLAGS -I/usr/local/include"
        LDFLAGS="$LDFLAGS -L/usr/local/lib"
        AC_MSG_CHECKING([how to specify blibpath for linker ($LD)]) 
@@ -75,27 +75,32 @@ case "$host" in
                AC_MSG_RESULT($blibflags)
        fi
        LDFLAGS="$saved_LDFLAGS"
-       # Check for authenticate.  Might be in libs.a on older AIXes
-       AC_CHECK_FUNC(authenticate, [with_aixauthenticate=1],
+       dnl Check for authenticate.  Might be in libs.a on older AIXes
+       AC_CHECK_FUNC(authenticate, [AC_DEFINE(WITH_AIXAUTHENTICATE)],
                [AC_CHECK_LIB(s,authenticate,
-                       [       with_aixaixauthenticate=1
+                       [ AC_DEFINE(WITH_AIXAUTHENTICATE)
                                LIBS="$LIBS -ls"
                        ])
                ])
-       # Check if loginfailed takes 3 arguments (AIX <= 5.1)
-       if (test "x$with_aixauthenticate" = "x1" ); then
-               AC_DEFINE(WITH_AIXAUTHENTICATE)
-               AC_MSG_CHECKING(if loginfailed takes 3 arguments)
-               AC_TRY_COMPILE(
+       dnl Check if loginfailed is declared and takes 4 arguments (AIX >= 5.2)
+       AC_CHECK_DECL(loginfailed,
+                [AC_MSG_CHECKING(if loginfailed takes 4 arguments)
+                 AC_TRY_COMPILE(
                        [#include <usersec.h>],
-                       [(void)loginfailed("user","host","tty");],
-                       [AC_MSG_RESULT(yes)
-                        AC_DEFINE(AIX_LOGINFAILED_3ARG)],
+                       [(void)loginfailed("user","host","tty",0);],
+                       [AC_MSG_RESULT(yes)
+                        AC_DEFINE(AIX_LOGINFAILED_4ARG)],
                        [AC_MSG_RESULT(no)]
-               )
-       fi
+               )],
+               [],
+               [#include <usersec.h>]
+       )
+       AC_CHECK_FUNCS(setauthdb)
        AC_DEFINE(BROKEN_GETADDRINFO)
        AC_DEFINE(BROKEN_REALPATH)
+       AC_DEFINE(SETEUID_BREAKS_SETUID)
+       AC_DEFINE(BROKEN_SETREUID)
+       AC_DEFINE(BROKEN_SETREGID)
        dnl AIX handles lastlog as part of its login message
        AC_DEFINE(DISABLE_LASTLOG)
        AC_DEFINE(LOGIN_NEEDS_UTMPX)
@@ -126,6 +131,9 @@ main() { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))
 }], [AC_MSG_RESULT(working)],
        [AC_MSG_RESULT(buggy)
        AC_DEFINE(BROKEN_GETADDRINFO)],
+       AC_DEFINE(SETEUID_BREAKS_SETUID)
+       AC_DEFINE(BROKEN_SETREUID)
+       AC_DEFINE(BROKEN_SETREGID)
        [AC_MSG_RESULT(assume it is working)])
        ;;
 *-*-hpux10.26)
@@ -140,6 +148,7 @@ main() { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))
        AC_DEFINE(LOGIN_NEEDS_UTMPX)
        AC_DEFINE(DISABLE_SHADOW)
        AC_DEFINE(DISABLE_UTMP)
+       AC_DEFINE(LOCKED_PASSWD_STRING, "*")
        AC_DEFINE(SPT_TYPE,SPT_PSTAT)
        LIBS="$LIBS -lsec -lsecpw"
        AC_CHECK_LIB(xnet, t_error, ,AC_MSG_ERROR([*** -lxnet needed on HP-UX - check config.log ***]))
@@ -156,6 +165,7 @@ main() { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))
        AC_DEFINE(LOGIN_NEEDS_UTMPX)
        AC_DEFINE(DISABLE_SHADOW)
        AC_DEFINE(DISABLE_UTMP)
+       AC_DEFINE(LOCKED_PASSWD_STRING, "*")
        AC_DEFINE(SPT_TYPE,SPT_PSTAT)
        LIBS="$LIBS -lsec"
        AC_CHECK_LIB(xnet, t_error, ,AC_MSG_ERROR([*** -lxnet needed on HP-UX - check config.log ***]))
@@ -169,6 +179,7 @@ main() { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))
        AC_DEFINE(LOGIN_NEEDS_UTMPX)
        AC_DEFINE(DISABLE_SHADOW)
        AC_DEFINE(DISABLE_UTMP)
+       AC_DEFINE(LOCKED_PASSWD_STRING, "*")
        AC_DEFINE(SPT_TYPE,SPT_PSTAT)
        LIBS="$LIBS -lsec"
        AC_CHECK_LIB(xnet, t_error, ,AC_MSG_ERROR([*** -lxnet needed on HP-UX - check config.log ***]))
@@ -179,6 +190,7 @@ main() { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))
        PATH="$PATH:/usr/etc"
        AC_DEFINE(BROKEN_INET_NTOA)
        AC_DEFINE(WITH_ABBREV_NO_TTY)
+       AC_DEFINE(LOCKED_PASSWD_STRING, "*LK*")
        ;;
 *-*-irix6*)
        CPPFLAGS="$CPPFLAGS -I/usr/local/include"
@@ -190,60 +202,17 @@ main() { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))
        AC_CHECK_FUNC(jlimit_startjob, [AC_DEFINE(WITH_IRIX_JOBS)])
        AC_DEFINE(BROKEN_INET_NTOA)
        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)
        inet6_default_4in6=yes
-       # openpty can be in libutil, needed for controlling tty test
-       AC_SEARCH_LIBS(openpty, util)
-       # make sure that openpty does not reacquire controlling terminal
-       AC_MSG_CHECKING(if openpty correctly handles controlling tty)
-       AC_TRY_RUN(
-               [
-#include <stdio.h>
-#include <sys/fcntl.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-
-int
-main()
-{
-       pid_t pid;
-       int fd, ptyfd, ttyfd, status;
-
-       pid = fork();
-       if (pid < 0) {          /* failed */
-               exit(1);
-       } else if (pid > 0) {   /* parent */
-               waitpid(pid, &status, 0);
-               if (WIFEXITED(status)) 
-                       exit(WEXITSTATUS(status));
-               else
-                       exit(2);
-       } else {                /* child */
-               close(0); close(1); close(2);
-               setsid();
-               openpty(&ptyfd, &ttyfd, NULL, NULL, NULL);
-               fd = open("/dev/tty", O_RDWR | O_NOCTTY);
-               if (fd >= 0)
-                       exit(3);        /* Acquired ctty: broken */
-               else
-                       exit(0);        /* Did not acquire ctty: OK */
-       }
-}
-               ],
-               [
-                       AC_MSG_RESULT(yes)
-               ],
-               [
-                       AC_MSG_RESULT(no)
-                       AC_DEFINE(SSHD_ACQUIRES_CTTY)
-               ]
-       )
        case `uname -r` in
        1.*|2.0.*)
                AC_DEFINE(BROKEN_CMSG_TYPE)
@@ -261,6 +230,11 @@ mips-sony-bsd|mips-sony-newsos4)
 *-*-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
@@ -281,8 +255,10 @@ mips-sony-bsd|mips-sony-newsos4)
        AC_DEFINE(LOGIN_NEEDS_UTMPX)
        AC_DEFINE(LOGIN_NEEDS_TERM)
        AC_DEFINE(PAM_TTY_KLUDGE)
+       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)
@@ -310,6 +286,9 @@ mips-sony-bsd|mips-sony-newsos4)
        LIBS="$LIBS -lc89"
        AC_DEFINE(USE_PIPES)
        AC_DEFINE(SSHD_ACQUIRES_CTTY)
+       AC_DEFINE(SETEUID_BREAKS_SETUID)
+       AC_DEFINE(BROKEN_SETREUID)
+       AC_DEFINE(BROKEN_SETREGID)
        ;;
 *-sni-sysv*)
        CPPFLAGS="$CPPFLAGS -I/usr/local/include"
@@ -319,6 +298,7 @@ mips-sony-bsd|mips-sony-newsos4)
        AC_DEFINE(USE_PIPES)
        AC_DEFINE(IP_TOS_IS_BROKEN)
        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
@@ -327,11 +307,17 @@ mips-sony-bsd|mips-sony-newsos4)
        CPPFLAGS="$CPPFLAGS -I/usr/local/include"
        LDFLAGS="$LDFLAGS -L/usr/local/lib"
        AC_DEFINE(USE_PIPES)
+       AC_DEFINE(SETEUID_BREAKS_SETUID)
+       AC_DEFINE(BROKEN_SETREUID)
+       AC_DEFINE(BROKEN_SETREGID)
        ;;
 *-*-sysv5*)
        CPPFLAGS="$CPPFLAGS -I/usr/local/include"
        LDFLAGS="$LDFLAGS -L/usr/local/lib"
        AC_DEFINE(USE_PIPES)
+       AC_DEFINE(SETEUID_BREAKS_SETUID)
+       AC_DEFINE(BROKEN_SETREUID)
+       AC_DEFINE(BROKEN_SETREGID)
        ;;
 *-*-sysv*)
        CPPFLAGS="$CPPFLAGS -I/usr/local/include"
@@ -348,6 +334,7 @@ mips-sony-bsd|mips-sony-newsos4)
        AC_DEFINE(HAVE_SECUREWARE)
        AC_DEFINE(DISABLE_SHADOW)
        AC_DEFINE(BROKEN_SAVED_UIDS)
+       AC_DEFINE(WITH_ABBREV_NO_TTY)
        AC_CHECK_FUNCS(getluid setluid)
        MANTYPE=man
        do_sco3_extra_lib_check=yes
@@ -364,6 +351,10 @@ mips-sony-bsd|mips-sony-newsos4)
        AC_DEFINE(HAVE_SECUREWARE)
        AC_DEFINE(DISABLE_SHADOW)
        AC_DEFINE(DISABLE_FD_PASSING)
+       AC_DEFINE(SETEUID_BREAKS_SETUID)
+       AC_DEFINE(BROKEN_SETREUID)
+       AC_DEFINE(BROKEN_SETREGID)
+       AC_DEFINE(WITH_ABBREV_NO_TTY)
        AC_CHECK_FUNCS(getluid setluid)
        MANTYPE=man
        ;;
@@ -374,6 +365,14 @@ mips-sony-bsd|mips-sony-newsos4)
        LIBS="$LIBS -lgen -lrsc -lshare -luex -lacm"
        MANTYPE=cat
        ;;
+*-*-unicosmp*)
+       AC_DEFINE(WITH_ABBREV_NO_TTY)
+       AC_DEFINE(USE_PIPES)
+       AC_DEFINE(DISABLE_FD_PASSING)
+       LDFLAGS="$LDFLAGS"
+       LIBS="$LIBS -lgen -lacid"
+       MANTYPE=cat
+       ;;
 *-*-unicos*)
        AC_DEFINE(USE_PIPES)
        AC_DEFINE(DISABLE_FD_PASSING)
@@ -406,6 +405,11 @@ mips-sony-bsd|mips-sony-newsos4)
                fi
        fi
        AC_DEFINE(DISABLE_FD_PASSING)
+       AC_DEFINE(BROKEN_GETADDRINFO)
+       AC_DEFINE(SETEIUD_BREAKS_SETUID)
+       AC_DEFINE(BROKEN_SETREUID)
+       AC_DEFINE(BROKEN_SETREGID)
+       AC_DEFINE(LOCKED_PASSWD_SUBSTR, "Nologin")
        ;;
 
 *-*-nto-qnx)
@@ -465,7 +469,7 @@ int main(){exit(0);}
 
 # Checks for header files.
 AC_CHECK_HEADERS(bstring.h crypt.h endian.h features.h floatingpoint.h \
-       getopt.h glob.h ia.h lastlog.h libgen.h limits.h login.h \
+       getopt.h glob.h ia.h lastlog.h limits.h login.h \
        login_cap.h maillock.h netdb.h netgroup.h \
        netinet/in_systm.h paths.h pty.h readpassphrase.h \
        rpc/types.h security/pam_appl.h shadow.h stddef.h stdint.h \
@@ -486,8 +490,46 @@ if test "x$with_tcp_wrappers" != "xno" ; then
     fi
 fi
 
+dnl IRIX and Solaris 2.5.1 have dirname() in libgen
+AC_CHECK_FUNCS(dirname, [AC_CHECK_HEADERS(libgen.h)] ,[
+       AC_CHECK_LIB(gen, dirname,[
+               AC_CACHE_CHECK([for broken dirname],
+                       ac_cv_have_broken_dirname, [
+                       save_LIBS="$LIBS"
+                       LIBS="$LIBS -lgen"
+                       AC_TRY_RUN(
+                               [
+#include <libgen.h>
+#include <string.h>
+
+int main(int argc, char **argv) {
+    char *s, buf[32];
+
+    strncpy(buf,"/etc", 32);
+    s = dirname(buf);
+    if (!s || strncmp(s, "/", 32) != 0) {
+       exit(1);
+    } else {
+       exit(0);
+    }
+}
+                               ],
+                               [ ac_cv_have_broken_dirname="no" ],
+                               [ ac_cv_have_broken_dirname="yes" ]
+                       )
+                       LIBS="$save_LIBS"
+               ])
+               if test "x$ac_cv_have_broken_dirname" = "xno" ; then
+                       LIBS="$LIBS -lgen"
+                       AC_DEFINE(HAVE_DIRNAME)
+                       AC_CHECK_HEADERS(libgen.h)
+               fi
+       ])
+])
+
 AC_CHECK_FUNC(getspnam, ,
        AC_CHECK_LIB(gen, getspnam, LIBS="$LIBS -lgen"))
+AC_SEARCH_LIBS(basename, gen, AC_DEFINE(HAVE_BASENAME))
 
 AC_ARG_WITH(rpath,
        [  --without-rpath         Disable auto-added -R linker paths],
@@ -684,7 +726,7 @@ AC_ARG_WITH(tcp-wrappers,
 
 dnl    Checks for library functions. Please keep in alphabetical order
 AC_CHECK_FUNCS(\
-       arc4random __b64_ntop b64_ntop __b64_pton b64_pton basename \
+       arc4random __b64_ntop b64_ntop __b64_pton b64_pton \
        bcopy bindresvport_sa clock fchmod fchown freeaddrinfo futimes \
        gai_strerror getaddrinfo getcwd getgrouplist getnameinfo getopt \
        getpeereid _getpty getrlimit getttyent glob inet_aton \
@@ -694,53 +736,22 @@ AC_CHECK_FUNCS(\
        setdtablesize setegid setenv seteuid setgroups setlogin setpcred \
        setproctitle setregid setresgid setresuid setreuid setrlimit \
        setsid setvbuf sigaction sigvec snprintf socketpair strerror \
-       strlcat strlcpy strmode strnvis sysconf tcgetpgrp truncate utimes \
-       vhangup vsnprintf waitpid \
+       strlcat strlcpy strmode strnvis sysconf tcgetpgrp \
+       truncate utimes vhangup vsnprintf waitpid \
 )
 
 AC_SEARCH_LIBS(nanosleep, rt posix4, AC_DEFINE(HAVE_NANOSLEEP))
-AC_SEARCH_LIBS(basename, gen, AC_DEFINE(HAVE_BASENAME))
 
 dnl Make sure prototypes are defined for these before using them.
 AC_CHECK_DECL(strsep, [AC_CHECK_FUNCS(strsep)])
 AC_CHECK_DECL(getrusage, [AC_CHECK_FUNCS(getrusage)])
 
-dnl IRIX and Solaris 2.5.1 have dirname() in libgen
-AC_CHECK_FUNCS(dirname, [AC_CHECK_HEADERS(libgen.h)] ,[
-       AC_CHECK_LIB(gen, dirname,[
-               AC_CACHE_CHECK([for broken dirname],
-                       ac_cv_have_broken_dirname, [
-                       save_LIBS="$LIBS"
-                       LIBS="$LIBS -lgen"
-                       AC_TRY_RUN(
-                               [
-#include <libgen.h>
-#include <string.h>
-
-int main(int argc, char **argv) {
-    char *s, buf[32];
-
-    strncpy(buf,"/etc", 32);
-    s = dirname(buf);
-    if (!s || strncmp(s, "/", 32) != 0) {
-       exit(1);
-    } else {
-       exit(0);
-    }
-}
-                               ],
-                               [ ac_cv_have_broken_dirname="no" ],
-                               [ ac_cv_have_broken_dirname="yes" ]
-                       )
-                       LIBS="$save_LIBS"
-               ])
-               if test "x$ac_cv_have_broken_dirname" = "xno" ; then
-                       LIBS="$LIBS -lgen"
-                       AC_DEFINE(HAVE_DIRNAME)
-                       AC_CHECK_HEADERS(libgen.h)
-               fi
-       ])
-])
+dnl tcsendbreak might be a macro
+AC_CHECK_DECL(tcsendbreak,
+       [AC_DEFINE(HAVE_TCSENDBREAK)],
+       [AC_CHECK_FUNCS(tcsendbreak)], 
+       [#include <termios.h>]
+)
 
 dnl    Checks for time functions
 AC_CHECK_FUNCS(gettimeofday time)
@@ -804,6 +815,53 @@ unlink(template); exit(0);
 )
 fi
 
+dnl make sure that openpty does not reacquire controlling terminal
+if test ! -z "$check_for_openpty_ctty_bug"; then
+       AC_MSG_CHECKING(if openpty correctly handles controlling tty)
+       AC_TRY_RUN(
+               [
+#include <stdio.h>
+#include <sys/fcntl.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+int
+main()
+{
+       pid_t pid;
+       int fd, ptyfd, ttyfd, status;
+
+       pid = fork();
+       if (pid < 0) {          /* failed */
+               exit(1);
+       } else if (pid > 0) {   /* parent */
+               waitpid(pid, &status, 0);
+               if (WIFEXITED(status)) 
+                       exit(WEXITSTATUS(status));
+               else
+                       exit(2);
+       } else {                /* child */
+               close(0); close(1); close(2);
+               setsid();
+               openpty(&ptyfd, &ttyfd, NULL, NULL, NULL);
+               fd = open("/dev/tty", O_RDWR | O_NOCTTY);
+               if (fd >= 0)
+                       exit(3);        /* Acquired ctty: broken */
+               else
+                       exit(0);        /* Did not acquire ctty: OK */
+       }
+}
+               ],
+               [
+                       AC_MSG_RESULT(yes)
+               ],
+               [
+                       AC_MSG_RESULT(no)
+                       AC_DEFINE(SSHD_ACQUIRES_CTTY)
+               ]
+       )
+fi
+
 AC_FUNC_GETPGRP
 
 # Check for PAM libs
@@ -819,6 +877,7 @@ AC_ARG_WITH(pam,
                        AC_CHECK_LIB(dl, dlopen, , )
                        AC_CHECK_LIB(pam, pam_set_item, , AC_MSG_ERROR([*** libpam missing]))
                        AC_CHECK_FUNCS(pam_getenvlist)
+                       AC_CHECK_FUNCS(pam_putenv)
 
                        disable_shadow=yes
                        PAM_MSG="yes"
@@ -1895,6 +1954,10 @@ AC_ARG_WITH(dns,
                                        # Needed by our getrrsetbyname()
                                        AC_SEARCH_LIBS(res_query, resolv)
                                        AC_SEARCH_LIBS(dn_expand, resolv)
+                                       AC_CHECK_FUNCS(_getshort _getlong)
+                                       AC_CHECK_MEMBER(HEADER.ad,
+                                               [AC_DEFINE(HAVE_HEADER_AD)],,
+                                               [#include <arpa/nameser.h>])
                                ])
                fi
        ]
@@ -1934,91 +1997,36 @@ AC_ARG_WITH(kerberos5,
                         fi
                        AC_SEARCH_LIBS(dn_expand, resolv)
 
+                       AC_CHECK_LIB(gssapi,gss_init_sec_context,
+                               [ AC_DEFINE(GSSAPI)
+                                 K5LIBS="-lgssapi $K5LIBS" ],
+                               [ AC_CHECK_LIB(gssapi_krb5,gss_init_sec_context,
+                                       [ AC_DEFINE(GSSAPI)
+                                         K5LIBS="-lgssapi_krb5 $K5LIBS" ],
+                                       AC_MSG_WARN([Cannot find any suitable gss-api library - build may fail]),
+                                       $K5LIBS)
+                               ],
+                               $K5LIBS)
+                       
+                       AC_CHECK_HEADER(gssapi.h, ,
+                               [ unset ac_cv_header_gssapi_h
+                                 CPPFLAGS="$CPPFLAGS -I${KRB5ROOT}/include/gssapi" 
+                                 AC_CHECK_HEADERS(gssapi.h, ,
+                                       AC_MSG_WARN([Cannot find any suitable gss-api header - build may fail])
+                                 ) 
+                               ]
+                       )
+
+                       oldCPP="$CPPFLAGS"
+                       CPPFLAGS="$CPPFLAGS -I${KRB5ROOT}/include/gssapi"
+                       AC_CHECK_HEADER(gssapi_krb5.h, ,
+                                       [ CPPFLAGS="$oldCPP" ])
+
                         KRB5=yes
                 fi
         ]
 )
-# Check whether user wants Kerberos 4 support
-KRB4_MSG="no" 
-AC_ARG_WITH(kerberos4,
-       [  --with-kerberos4=PATH   Enable Kerberos 4 support],
-       [
-               if test "x$withval" != "xno" ; then
-                       if test "x$withval" != "xyes" ; then
-                               CPPFLAGS="$CPPFLAGS -I${withval}/include"
-                               LDFLAGS="$LDFLAGS -L${withval}/lib"
-                               if test ! -z "$need_dash_r" ; then
-                                       LDFLAGS="$LDFLAGS -R${withval}/lib"
-                               fi
-                               if test ! -z "$blibpath" ; then
-                                       blibpath="$blibpath:${withval}/lib"
-                               fi
-                       else
-                               if test -d /usr/include/kerberosIV ; then
-                                       CPPFLAGS="$CPPFLAGS -I/usr/include/kerberosIV"
-                               fi
-                       fi
-
-                       AC_CHECK_HEADERS(krb.h)
-                       if test "$ac_cv_header_krb_h" != yes; then
-                               AC_MSG_WARN([Cannot find krb.h, build may fail])
-                       fi
-                       AC_CHECK_LIB(krb, main)
-                       if test "$ac_cv_lib_krb_main" != yes; then
-                               AC_CHECK_LIB(krb4, main)
-                               if test "$ac_cv_lib_krb4_main" != yes; then
-                                       AC_MSG_WARN([Cannot find libkrb nor libkrb4, build may fail])
-                               else
-                                       KLIBS="-lkrb4"
-                               fi
-                       else
-                               KLIBS="-lkrb"
-                       fi
-                       AC_CHECK_LIB(des, des_cbc_encrypt)
-                       if test "$ac_cv_lib_des_des_cbc_encrypt" != yes; then
-                               AC_CHECK_LIB(des425, des_cbc_encrypt)
-                               if test "$ac_cv_lib_des425_des_cbc_encrypt" != yes; then
-                                       AC_MSG_WARN([Cannot find libdes nor libdes425, build may fail])
-                               else
-                                       KLIBS="-ldes425"
-                               fi
-                       else
-                               KLIBS="-ldes"
-                       fi
-                       AC_CHECK_LIB(resolv, dn_expand, , )
-                       KRB4=yes
-                       KRB4_MSG="yes" 
-                       AC_DEFINE(KRB4)
-               fi
-       ]
-)
-
-# Check whether user wants AFS support
-AFS_MSG="no" 
-AC_ARG_WITH(afs,
-       [  --with-afs=PATH         Enable AFS support],
-       [
-               if test "x$withval" != "xno" ; then
-
-                       if test "x$withval" != "xyes" ; then
-                               CPPFLAGS="$CPPFLAGS -I${withval}/include"
-                               LDFLAGS="$LDFLAGS -L${withval}/lib"
-                       fi
-
-                       if test -z "$KRB4" ; then
-                               AC_MSG_WARN([AFS requires Kerberos IV support, build may fail])
-                       fi
-
-                       LIBS="-lkafs $LIBS"
-                       if test ! -z "$AFS_LIBS" ; then
-                               LIBS="$LIBS $AFS_LIBS"
-                       fi
-                       AC_DEFINE(AFS)
-                       AFS_MSG="yes" 
-               fi
-       ]
-)
-LIBS="$LIBS $KLIBS $K5LIBS"
+LIBS="$LIBS $K5LIBS"
 
 # Looking for programs, paths and files
 
@@ -2188,30 +2196,48 @@ else
        )
 fi
 
+# check for /etc/default/login and use it if present.
+AC_CHECK_FILE("/etc/default/login", [ external_path_file=/etc/default/login ])
+
+if test "x$external_path_file" = "x/etc/default/login"; then
+       AC_DEFINE(HAVE_ETC_DEFAULT_LOGIN)
+fi
+
 dnl BSD systems use /etc/login.conf so --with-default-path= has no effect
 if test $ac_cv_func_login_getcapbool = "yes" -a \
        $ac_cv_header_login_cap_h = "yes" ; then
-       USES_LOGIN_CONF=yes
+       external_path_file=/etc/login.conf
 fi
+
 # Whether to mess with the default path
 SERVER_PATH_MSG="(default)" 
 AC_ARG_WITH(default-path,
        [  --with-default-path=    Specify default \$PATH environment for server],
        [
-               if test "$USES_LOGIN_CONF" = "yes" ; then
+               if test "x$external_path_file" = "x/etc/login.conf" ; then
                        AC_MSG_WARN([
 --with-default-path=PATH has no effect on this system.
 Edit /etc/login.conf instead.])
                elif test "x$withval" != "xno" ; then   
+                       if test ! -z "$external_path_file" ; then
+                               AC_MSG_WARN([
+--with-default-path=PATH will only be used if PATH is not defined in
+$external_path_file .])
+                       fi
                        user_path="$withval"
                        SERVER_PATH_MSG="$withval" 
                fi
        ],
-       [ if test "$USES_LOGIN_CONF" = "yes" ; then
-       AC_MSG_WARN([Make sure the path to scp is in /etc/login.conf])
+       [ if test "x$external_path_file" = "x/etc/login.conf" ; then
+               AC_MSG_WARN([Make sure the path to scp is in /etc/login.conf])
        else
-       AC_TRY_RUN(
-               [
+               if test ! -z "$external_path_file" ; then
+                       AC_MSG_WARN([
+If PATH is defined in $external_path_file, ensure the path to scp is included,
+otherwise scp will not work.])
+               fi
+               AC_TRY_RUN(
+                       [
 /* find out what STDPATH is */
 #include <stdio.h>
 #ifdef HAVE_PATHS_H
@@ -2265,7 +2291,7 @@ main()
                fi
        fi ]
 )
-if test "$USES_LOGIN_CONF" != "yes" ; then
+if test "x$external_path_file" != "x/etc/login.conf" ; then
        AC_DEFINE_UNQUOTED(USER_PATH, "$user_path")
        AC_SUBST(user_path)
 fi
@@ -2635,10 +2661,15 @@ echo "                   Askpass program: $E"
 echo "                      Manual pages: $F"
 echo "                          PID file: $G"
 echo "  Privilege separation chroot path: $H"
-if test "$USES_LOGIN_CONF" = "yes" ; then
-echo "   At runtime, sshd will use the path defined in /etc/login.conf"
+if test "x$external_path_file" = "x/etc/login.conf" ; then
+echo "   At runtime, sshd will use the path defined in $external_path_file"
+echo "   Make sure the path to scp is present, otherwise scp will not work"
 else
 echo "            sshd default user PATH: $I"
+       if test ! -z "$external_path_file"; then
+echo "   (If PATH is set in $external_path_file it will be used instead. If"
+echo "   used, ensure the path to scp is present, otherwise scp will not work.)"
+       fi
 fi
 if test ! -z "$superuser_path" ; then
 echo "          sshd superuser user PATH: $J"
@@ -2646,10 +2677,8 @@ fi
 echo "                    Manpage format: $MANTYPE"
 echo "                       DNS support: $DNS_MSG"
 echo "                       PAM support: $PAM_MSG"
-echo "                KerberosIV support: $KRB4_MSG"
 echo "                 KerberosV support: $KRB5_MSG"
 echo "                 Smartcard support: $SCARD_MSG"
-echo "                       AFS support: $AFS_MSG"
 echo "                     S/KEY support: $SKEY_MSG"
 echo "              TCP Wrappers support: $TCPW_MSG"
 echo "              MD5 password support: $MD5_MSG"
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