]> andersk Git - openssh.git/blobdiff - configure.ac
- (dtucker) [openbsd-compat/fake-rfc2553.h] MAX_INT -> INT_MAX since the
[openssh.git] / configure.ac
index e97b56652619d8884fc1325b8b9221ffeb069ae1..919a030a04afbb40988091eb833e82749cd60823 100644 (file)
@@ -14,7 +14,7 @@
 # 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_INIT(OpenSSH, Portable, openssh-unix-dev@mindrot.org)
 AC_CONFIG_SRCDIR([ssh.c])
 
 AC_CONFIG_HEADER(config.h)
@@ -75,16 +75,96 @@ 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>])
+
 if test "$GCC" = "yes" || test "$GCC" = "egcs"; then
-       CFLAGS="$CFLAGS -Wall -Wpointer-arith -Wno-uninitialized"
+       CFLAGS="$CFLAGS -Wall -Wpointer-arith -Wuninitialized"
+       CFLAGS="$CFLAGS -Wsign-compare"
+
+       if test -z "$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="$saved_CFLAGS"],
+                   [#include <limits.h>]
+               )
+       fi
+fi
+
+if test -z "$have_llong_max"; then
+       AC_MSG_CHECKING([for max value of long long])
+       AC_RUN_IFELSE(
+               [AC_LANG_SOURCE([[
+#include <stdio.h>
+/* Why is this so damn hard? */
+#ifdef __GNUC__
+# undef __GNUC__
+#endif
+#define __USE_ISOC99
+#include <limits.h>
+#define DATA "conftest.llminmax"
+int main(void) {
+       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) {
+               fprintf(f, "unknown unknown\n");
+               exit(2);
+       }
+
+       if (fprintf(f ,"%lld %lld", llmin, llmax) < 0)
+               exit(3);
+
+       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
 
 AC_ARG_WITH(rpath,
        [  --without-rpath         Disable auto-added -R linker paths],
        [
-               if test "x$withval" = "xno" ; then      
+               if test "x$withval" = "xno" ; then
                        need_dash_r=""
                fi
                if test "x$withval" = "xyes" ; then
@@ -123,7 +203,7 @@ case "$host" in
                ])
        dnl Check for various auth function declarations in headers.
        AC_CHECK_DECLS([authenticate, loginrestrictions, loginsuccess,
-           passwdexpired], , , [#include <usersec.h>])
+           passwdexpired, setauthdb], , , [#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)
@@ -181,51 +261,43 @@ main() { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))
        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*)
+*-*-hpux*)
+       # first we define all of the options common to all HP-UX releases
        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 ***]))
+       AC_CHECK_LIB(xnet, t_error, ,
+           AC_MSG_ERROR([*** -lxnet needed on HP-UX - check config.log ***]))
+
+       # next, we define all of the options specific to major releases
+       case "$host" in
+       *-*-hpux10*)
+               if test -z "$GCC"; then
+                       CFLAGS="$CFLAGS -Ae"
+               fi
+               ;;
+       *-*-hpux11*)
+               AC_DEFINE(PAM_SUN_CODEBASE)
+               AC_DEFINE(DISABLE_UTMP)
+               AC_DEFINE(USE_BTMP, 1, [Use btmp to log bad logins])
+               check_for_hpux_broken_getaddrinfo=1
+               check_for_conflicting_getspnam=1
+               ;;
+       esac
+
+       # lastly, we define options specific to minor releases
+       case "$host" in
+       *-*-hpux10.26)
+               AC_DEFINE(HAVE_SECUREWARE)
+               disable_ptmx_check=yes
+               LIBS="$LIBS -lsecpw"
+               ;;
+       esac
        ;;
 *-*-irix5*)
        PATH="$PATH:/usr/etc"
@@ -269,12 +341,12 @@ main() { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))
        esac
        ;;
 mips-sony-bsd|mips-sony-newsos4)
-       AC_DEFINE(HAVE_NEWS4)
+       AC_DEFINE(NEED_SETPRGP, [], [Need setpgrp to acquire controlling tty])
        SONY=1
        ;;
 *-*-netbsd*)
        check_for_libcrypt_before=1
-       if test "x$withval" != "xno" ; then     
+       if test "x$withval" != "xno" ; then
                need_dash_r=1
        fi
        ;;
@@ -296,8 +368,11 @@ mips-sony-bsd|mips-sony-newsos4)
        AC_DEFINE(USE_PIPES)
        AC_DEFINE(BROKEN_SAVED_UIDS)
        ;;
+*-*-openbsd*)
+       AC_DEFINE(HAVE_ATTRIBUTE__SENTINEL__, 1, [OpenBSD's gcc has sentinel])
+       ;;
 *-*-solaris*)
-       if test "x$withval" != "xno" ; then     
+       if test "x$withval" != "xno" ; then
                need_dash_r=1
        fi
        AC_DEFINE(PAM_SUN_CODEBASE)
@@ -361,6 +436,7 @@ mips-sony-bsd|mips-sony-newsos4)
        AC_DEFINE(SETEUID_BREAKS_SETUID)
        AC_DEFINE(BROKEN_SETREUID)
        AC_DEFINE(BROKEN_SETREGID)
+       AC_DEFINE(PASSWD_NEEDS_USERNAME, 1, [must supply username to passwd])
        ;;
 # UnixWare 7.x, OpenUNIX 8
 *-*-sysv5*)
@@ -368,6 +444,12 @@ mips-sony-bsd|mips-sony-newsos4)
        AC_DEFINE(SETEUID_BREAKS_SETUID)
        AC_DEFINE(BROKEN_SETREUID)
        AC_DEFINE(BROKEN_SETREGID)
+       AC_DEFINE(PASSWD_NEEDS_USERNAME, 1, [must supply username to passwd])
+       case "$host" in
+       *-*-sysv5SCO_SV*)       # SCO OpenServer 6.x
+               TEST_SHELL=/u95/bin/sh
+               ;;
+       esac
        ;;
 *-*-sysv*)
        ;;
@@ -466,21 +548,30 @@ mips-sony-bsd|mips-sony-newsos4)
        AC_DEFINE(MISSING_HOWMANY)
        AC_DEFINE(MISSING_FD_MASK)
        ;;
+
+*-*-ultrix*)
+       AC_DEFINE(BROKEN_GETGROUPS, [], [getgroups(0,NULL) will return -1])
+       AC_DEFINE(BROKEN_MMAP, [], [Ultrix mmap can't map files])
+       AC_DEFINE(NEED_SETPRGP, [], [Need setpgrp to acquire controlling tty])
+       AC_DEFINE(HAVE_SYS_SYSLOG_H, 1, [Force use of sys/syslog.h on Ultrix])
+       ;;
 esac
 
 # Allow user to specify flags
 AC_ARG_WITH(cflags,
        [  --with-cflags           Specify additional flags to pass to compiler],
        [
-               if test "x$withval" != "xno" ; then
+               if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
+                   test "x${withval}" != "xyes"; then
                        CFLAGS="$CFLAGS $withval"
                fi
-       ]       
+       ]
 )
 AC_ARG_WITH(cppflags,
        [  --with-cppflags         Specify additional flags to pass to preprocessor] ,
        [
-               if test "x$withval" != "xno"; then
+               if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
+                   test "x${withval}" != "xyes"; then
                        CPPFLAGS="$CPPFLAGS $withval"
                fi
        ]
@@ -488,18 +579,31 @@ AC_ARG_WITH(cppflags,
 AC_ARG_WITH(ldflags,
        [  --with-ldflags          Specify additional flags to pass to linker],
        [
-               if test "x$withval" != "xno" ; then
+               if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
+                   test "x${withval}" != "xyes"; then
                        LDFLAGS="$LDFLAGS $withval"
                fi
-       ]       
+       ]
 )
 AC_ARG_WITH(libs,
        [  --with-libs             Specify additional libraries to link with],
        [
-               if test "x$withval" != "xno" ; then
+               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$withval" != "xno"; then
+                       werror_flags="-Werror"
+                       if "x${withval}" != "xyes"; then
+                               werror_flags="$withval"
+                       fi
+               fi
+       ]
 )
 
 AC_MSG_CHECKING(compiler and flags for sanity)
@@ -516,17 +620,66 @@ int main(){exit(0);}
        [       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 \
-       floatingpoint.h getopt.h glob.h ia.h lastlog.h limits.h login.h \
-       login_cap.h maillock.h ndir.h netdb.h netgroup.h \
-       netinet/in_systm.h pam/pam_appl.h paths.h pty.h readpassphrase.h \
-       rpc/types.h security/pam_appl.h shadow.h stddef.h stdint.h \
-       strings.h sys/dir.h sys/strtio.h sys/audit.h sys/bitypes.h \
-       sys/bsdtty.h sys/cdefs.h sys/mman.h sys/ndir.h sys/prctl.h \
-       sys/pstat.h sys/select.h sys/stat.h sys/stream.h \
-       sys/stropts.h sys/sysmacros.h sys/time.h sys/timers.h sys/un.h \
-       time.h tmpdir.h ttyent.h usersec.h util.h utime.h utmp.h utmpx.h vis.h)
+dnl Checks for header files.
+AC_CHECK_HEADERS( \
+       bstring.h \
+       crypt.h \
+       dirent.h \
+       endian.h \
+       features.h \
+       floatingpoint.h \
+       getopt.h \
+       glob.h \
+       ia.h \
+       lastlog.h \
+       limits.h \
+       login.h \
+       login_cap.h \
+       maillock.h \
+       ndir.h \
+       netdb.h \
+       netgroup.h \
+       netinet/in_systm.h \
+       pam/pam_appl.h \
+       paths.h \
+       pty.h \
+       readpassphrase.h \
+       rpc/types.h \
+       security/pam_appl.h \
+       shadow.h \
+       stddef.h \
+       stdint.h \
+       string.h \
+       strings.h \
+       sys/audit.h \
+       sys/bitypes.h \
+       sys/bsdtty.h \
+       sys/cdefs.h \
+       sys/dir.h \
+       sys/mman.h \
+       sys/ndir.h \
+       sys/prctl.h \
+       sys/pstat.h \
+       sys/select.h \
+       sys/stat.h \
+       sys/stream.h \
+       sys/stropts.h \
+       sys/strtio.h \
+       sys/sysmacros.h \
+       sys/time.h \
+       sys/timers.h \
+       sys/un.h \
+       time.h \
+       tmpdir.h \
+       ttyent.h \
+       unistd.h \
+       usersec.h \
+       util.h \
+       utime.h \
+       utmp.h \
+       utmpx.h \
+       vis.h \
+)
 
 # sys/ptms.h requires sys/stream.h to be included first on Solaris
 AC_CHECK_HEADERS(sys/ptms.h, [], [], [
@@ -583,10 +736,9 @@ AC_SEARCH_LIBS(basename, gen, AC_DEFINE(HAVE_BASENAME))
 dnl zlib is required
 AC_ARG_WITH(zlib,
        [  --with-zlib=PATH        Use zlib in PATH],
-       [
-               if test "x$withval" = "xno" ; then
-                       AC_MSG_ERROR([*** zlib is required ***])
-               fi
+       [ if test "x$withval" = "xno" ; then
+               AC_MSG_ERROR([*** zlib is required ***])
+         elif test "x$withval" != "xyes"; then
                if test -d "$withval/lib"; then
                        if test -n "${need_dash_r}"; then
                                LDFLAGS="-L${withval}/lib -R${withval}/lib ${LDFLAGS}"
@@ -605,7 +757,7 @@ AC_ARG_WITH(zlib,
                else
                        CPPFLAGS="-I${withval} ${CPPFLAGS}"
                fi
-       ]
+       fi ]
 )
 
 AC_CHECK_LIB(z, deflate, ,
@@ -638,29 +790,40 @@ AC_ARG_WITH(zlib-version-check,
        ]
 )
 
-AC_MSG_CHECKING(for zlib 1.1.4 or greater)
+AC_MSG_CHECKING(for possibly buggy zlib)
 AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <stdio.h>
 #include <zlib.h>
 int main()
 {
-       int a, b, c, v;
-       if (sscanf(ZLIB_VERSION, "%d.%d.%d", &a, &b, &c) != 3)
+       int a=0, b=0, c=0, d=0, n, v;
+       n = sscanf(ZLIB_VERSION, "%d.%d.%d.%d", &a, &b, &c, &d);
+       if (n != 3 && n != 4)
                exit(1);
-       v = a*1000000 + b*1000 + c;
-       if (v >= 1001004)
+       v = a*1000000 + b*10000 + c*100 + d;
+       fprintf(stderr, "found zlib version %s (%d)\n", ZLIB_VERSION, v);
+
+       /* 1.1.4 is OK */
+       if (a == 1 && b == 1 && c >= 4)
+               exit(0);
+
+       /* 1.2.3 and up are OK */
+       if (v >= 1020300)
                exit(0);
+
        exit(2);
 }
        ]])],
-       AC_MSG_RESULT(yes),
-       [ AC_MSG_RESULT(no)
+       AC_MSG_RESULT(no),
+       [ AC_MSG_RESULT(yes)
          if test -z "$zlib_check_nonfatal" ; then
                AC_MSG_ERROR([*** zlib too old - check config.log ***
 Your reported zlib version has known security problems.  It's possible your
 vendor has fixed these problems without changing the version number.  If you
 are sure this is the case, you can disable the check by running
 "./configure --without-zlib-version-check".
-If you are in doubt, upgrade zlib to version 1.1.4 or greater.])
+If you are in doubt, upgrade zlib to version 1.2.3 or greater.
+See http://www.gzip.org/zlib/ for details.])
          else
                AC_MSG_WARN([zlib version may have security problems])
          fi
@@ -730,7 +893,7 @@ int main(void){struct dirent d;exit(sizeof(d.d_name)<=sizeof(char));}
                AC_MSG_RESULT(no)
                AC_DEFINE(BROKEN_ONE_BYTE_DIRENT_D_NAME)
        ],
-       [ 
+       [
                AC_MSG_WARN([cross compiling: assuming BROKEN_ONE_BYTE_DIRENT_D_NAME])
                AC_DEFINE(BROKEN_ONE_BYTE_DIRENT_D_NAME)
        ]
@@ -759,7 +922,7 @@ AC_ARG_WITH(skey,
                        AC_DEFINE(SKEY)
                        LIBS="-lskey $LIBS"
                        SKEY_MSG="yes"
-       
+
                        AC_MSG_CHECKING([for s/key support])
                        AC_TRY_RUN(
                                [
@@ -794,7 +957,8 @@ AC_ARG_WITH(tcp-wrappers,
                        saved_LIBS="$LIBS"
                        saved_LDFLAGS="$LDFLAGS"
                        saved_CPPFLAGS="$CPPFLAGS"
-                       if test -n "${withval}" -a "${withval}" != "yes"; then
+                       if test -n "${withval}" && \
+                           test "x${withval}" != "xyes"; then
                                if test -d "${withval}/lib"; then
                                        if test -n "${need_dash_r}"; then
                                                LDFLAGS="-L${withval}/lib -R${withval}/lib ${LDFLAGS}"
@@ -846,13 +1010,18 @@ LIBEDIT_MSG="no"
 AC_ARG_WITH(libedit,
        [  --with-libedit[[=PATH]]   Enable libedit support for sftp],
        [ if test "x$withval" != "xno" ; then
+               if test "x$withval" != "xyes"; then
+                       CPPFLAGS="$CPPFLAGS -I$withval/include"
+                       LDFLAGS="$LDFLAGS -L$withval/lib"
+               fi
                AC_CHECK_LIB(edit, el_init,
                        [ AC_DEFINE(USE_LIBEDIT, [], [Use libedit for sftp])
                          LIBEDIT="-ledit -lcurses"
                          LIBEDIT_MSG="yes"
                          AC_SUBST(LIBEDIT)
                        ],
-                       [], [-lcurses]
+                       [ AC_MSG_ERROR(libedit not found) ],
+                       [ -lcurses ]
                )
        fi ]
 )
@@ -889,19 +1058,88 @@ AC_ARG_WITH(audit,
 )
 
 dnl    Checks for library functions. Please keep in alphabetical order
-AC_CHECK_FUNCS(\
-       arc4random __b64_ntop b64_ntop __b64_pton b64_pton bcopy \
-       bindresvport_sa clock closefrom dirfd fchdir fchmod fchown \
-       freeaddrinfo futimes getaddrinfo getcwd getgrouplist getnameinfo \
-       getopt getpeereid _getpty getrlimit getttyent glob inet_aton \
-       inet_ntoa inet_ntop innetgr login_getcapbool md5_crypt memmove \
-       mkdtemp mmap ngetaddrinfo nsleep ogetaddrinfo openlog_r openpty \
-       pstat prctl readpassphrase realpath recvmsg rresvport_af sendmsg \
-       setdtablesize setegid setenv seteuid setgroups setlogin setpcred \
-       setproctitle setregid setreuid setrlimit \
-       setsid setvbuf sigaction sigvec snprintf socketpair strerror \
-       strlcat strlcpy strmode strnvis strtoul sysconf tcgetpgrp \
-       truncate unsetenv updwtmpx utimes vhangup vsnprintf waitpid \
+AC_CHECK_FUNCS( \
+       arc4random \
+       b64_ntop \
+       __b64_ntop \
+       b64_pton \
+       __b64_pton \
+       bcopy \
+       bindresvport_sa \
+       clock \
+       closefrom \
+       dirfd \
+       fchdir \
+       fchmod \
+       fchown \
+       freeaddrinfo \
+       futimes \
+       getaddrinfo \
+       getcwd \
+       getgrouplist \
+       getnameinfo \
+       getopt \
+       getpeereid \
+       _getpty \
+       getrlimit \
+       getttyent \
+       glob \
+       inet_aton \
+       inet_ntoa \
+       inet_ntop \
+       innetgr \
+       login_getcapbool \
+       md5_crypt \
+       memmove \
+       mkdtemp \
+       mmap \
+       ngetaddrinfo \
+       nsleep \
+       ogetaddrinfo \
+       openlog_r \
+       openpty \
+       prctl \
+       pstat \
+       readpassphrase \
+       realpath \
+       recvmsg \
+       rresvport_af \
+       sendmsg \
+       setdtablesize \
+       setegid \
+       setenv \
+       seteuid \
+       setgroups \
+       setlogin \
+       setpcred \
+       setproctitle \
+       setregid \
+       setreuid \
+       setrlimit \
+       setsid \
+       setvbuf \
+       sigaction \
+       sigvec \
+       snprintf \
+       socketpair \
+       strdup \
+       strerror \
+       strlcat \
+       strlcpy \
+       strmode \
+       strnvis \
+       strtonum \
+       strtoll \
+       strtoul \
+       sysconf \
+       tcgetpgrp \
+       truncate \
+       unsetenv \
+       updwtmpx \
+       utimes \
+       vhangup \
+       vsnprintf \
+       waitpid \
 )
 
 # IRIX has a const char return value for gai_strerror()
@@ -922,8 +1160,15 @@ str = gai_strerror(0);],[
 AC_SEARCH_LIBS(nanosleep, rt posix4, AC_DEFINE(HAVE_NANOSLEEP))
 
 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)])
+AC_CHECK_DECL(strsep,
+       [AC_CHECK_FUNCS(strsep)],
+       [],
+       [
+#ifdef HAVE_STRING_H
+# include <string.h>
+#endif
+       ])
 
 dnl tcsendbreak might be a macro
 AC_CHECK_DECL(tcsendbreak,
@@ -1011,7 +1256,9 @@ if test "x$ac_cv_func_getpeereid" != "xyes" ; then
                [#include <sys/types.h>
                 #include <sys/socket.h>],
                [int i = SO_PEERCRED;],
-               [AC_MSG_RESULT(yes)],
+               [ AC_MSG_RESULT(yes)
+                 AC_DEFINE(HAVE_SO_PEERCRED, [], [Have PEERCRED socket option])
+               ],
                [AC_MSG_RESULT(no)
                NO_PEERCHECK=1]
         )
@@ -1090,7 +1337,8 @@ main()
        )
 fi
 
-if test "x$ac_cv_func_getaddrinfo" = "xyes" -a "x$check_for_hpux_broken_getaddrinfo" = "x1"; then
+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_TRY_RUN(
                [
@@ -1158,7 +1406,8 @@ main(void)
        )
 fi
 
-if test "x$ac_cv_func_getaddrinfo" = "xyes" -a "x$check_for_aix_broken_getaddrinfo" = "x1"; then
+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_TRY_RUN(
                [
@@ -1467,7 +1716,7 @@ int main(void) { exit(RAND_status() == 1 ? 0 : 1); }
        [
                AC_MSG_WARN([cross compiling: assuming yes])
                # This is safe, since all recent OpenSSL versions will
-               # complain at runtime if not seeded correctly. 
+               # complain at runtime if not seeded correctly.
                OPENSSL_SEEDS_ITSELF=yes
        ]
 )
@@ -1489,10 +1738,10 @@ AC_ARG_WITH(rand-helper,
                        USE_RAND_HELPER=yes
                fi
        ],
-)      
+)
 
 # Which randomness source do we use?
-if test ! -z "$OPENSSL_SEEDS_ITSELF" -a -z "$USE_RAND_HELPER" ; then
+if test ! -z "$OPENSSL_SEEDS_ITSELF" && test -z "$USE_RAND_HELPER" ; then
        # OpenSSL only
        AC_DEFINE(OPENSSL_PRNG_ONLY)
        RAND_MSG="OpenSSL internal ONLY"
@@ -1582,10 +1831,11 @@ entropy_timeout=200
 AC_ARG_WITH(entropy-timeout,
        [  --with-entropy-timeout  Specify entropy gathering command timeout (msec)],
        [
-               if test "x$withval" != "xno" ; then
+               if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
+                   test "x${withval}" != "xyes"; then
                        entropy_timeout=$withval
                fi
-       ]       
+       ]
 )
 AC_DEFINE_UNQUOTED(ENTROPY_TIMEOUT_MSEC, $entropy_timeout)
 
@@ -1593,10 +1843,11 @@ SSH_PRIVSEP_USER=sshd
 AC_ARG_WITH(privsep-user,
        [  --with-privsep-user=user Specify non-privileged user for privilege separation],
        [
-               if test -n "$withval"; then
+               if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
+                   test "x${withval}" != "xyes"; then
                        SSH_PRIVSEP_USER=$withval
                fi
-       ]       
+       ]
 )
 AC_DEFINE_UNQUOTED(SSH_PRIVSEP_USER, "$SSH_PRIVSEP_USER")
 AC_SUBST(SSH_PRIVSEP_USER)
@@ -2030,9 +2281,9 @@ fi
 AC_CHECK_TYPES(struct timespec)
 
 # We need int64_t or else certian parts of the compile will fail.
-if test "x$ac_cv_have_int64_t" = "xno" -a \
-       "x$ac_cv_sizeof_long_int" != "x8" -a \
-       "x$ac_cv_sizeof_long_long_int" = "x0" ; then
+if test "x$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 "OpenSSH requires int64_t support.  Contact your vendor or install"
        echo "an alternative compiler (I.E., GCC) before continuing."
        echo ""
@@ -2324,23 +2575,28 @@ AC_ARG_WITH(sectok,
 )
 
 # Check whether user wants OpenSC support
+OPENSC_CONFIG="no"
 AC_ARG_WITH(opensc,
-       AC_HELP_STRING([--with-opensc=PFX],
-                      [Enable smartcard support using OpenSC]),
-       opensc_config_prefix="$withval", opensc_config_prefix="")
-if test x$opensc_config_prefix != x ; then
-  OPENSC_CONFIG=$opensc_config_prefix/bin/opensc-config
-  AC_PATH_PROG(OPENSC_CONFIG, opensc-config, no)
-  if test "$OPENSC_CONFIG" != "no"; then
-    LIBOPENSC_CFLAGS=`$OPENSC_CONFIG --cflags`
-    LIBOPENSC_LIBS=`$OPENSC_CONFIG --libs`
-    CPPFLAGS="$CPPFLAGS $LIBOPENSC_CFLAGS"
-    LDFLAGS="$LDFLAGS $LIBOPENSC_LIBS"
-    AC_DEFINE(SMARTCARD)
-    AC_DEFINE(USE_OPENSC)
-    SCARD_MSG="yes, using OpenSC"
-  fi
-fi
+       [--with-opensc[[=PFX]]       Enable smartcard support using OpenSC (optionally in PATH)],
+       [
+           if test "x$withval" != "xno" ; then
+               if test "x$withval" != "xyes" ; then
+                       OPENSC_CONFIG=$withval/bin/opensc-config
+               else
+                       AC_PATH_PROG(OPENSC_CONFIG, opensc-config, no)
+               fi
+               if test "$OPENSC_CONFIG" != "no"; then
+                       LIBOPENSC_CFLAGS=`$OPENSC_CONFIG --cflags`
+                       LIBOPENSC_LIBS=`$OPENSC_CONFIG --libs`
+                       CPPFLAGS="$CPPFLAGS $LIBOPENSC_CFLAGS"
+                       LDFLAGS="$LDFLAGS $LIBOPENSC_LIBS"
+                       AC_DEFINE(SMARTCARD)
+                       AC_DEFINE(USE_OPENSC)
+                       SCARD_MSG="yes, using OpenSC"
+               fi
+           fi
+       ]
+)
 
 # Check libraries needed by DNS fingerprint support
 AC_SEARCH_LIBS(getrrsetbyname, resolv,
@@ -2369,6 +2625,9 @@ int main()
                         AC_MSG_RESULT(no)])
                    ])
                AC_CHECK_FUNCS(_getshort _getlong)
+               AC_CHECK_DECLS([_getshort, _getlong], , ,
+                   [#include <sys/types.h>
+                   #include <arpa/nameser.h>])
                AC_CHECK_MEMBER(HEADER.ad,
                        [AC_DEFINE(HAVE_HEADER_AD)],,
                        [#include <arpa/nameser.h>])
@@ -2423,7 +2682,7 @@ AC_ARG_WITH(kerberos5,
                                         AC_DEFINE(HEIMDAL)
                                         K5LIBS="-lkrb5 -ldes"
                                         K5LIBS="$K5LIBS -lcom_err -lasn1"
-                                        AC_CHECK_LIB(roken, net_write, 
+                                        AC_CHECK_LIB(roken, net_write,
                                           [K5LIBS="$K5LIBS -lroken"])
                                       ],
                                       [ AC_MSG_RESULT(no)
@@ -2442,7 +2701,7 @@ AC_ARG_WITH(kerberos5,
                                        $K5LIBS)
                                ],
                                $K5LIBS)
-                       
+
                        AC_CHECK_HEADER(gssapi.h, ,
                                [ unset ac_cv_header_gssapi_h
                                  CPPFLAGS="$CPPFLAGS -I${KRB5ROOT}/include/gssapi"
@@ -2472,7 +2731,6 @@ AC_ARG_WITH(kerberos5,
 
        LIBS="$LIBS $K5LIBS"
        AC_SEARCH_LIBS(k_hasafs, kafs, AC_DEFINE(USE_AFS))
-       AC_SEARCH_LIBS(krb5_init_ets, $K5LIBS, AC_DEFINE(KRB5_INIT_ETS))
        ]
 )
 
@@ -2482,7 +2740,8 @@ PRIVSEP_PATH=/var/empty
 AC_ARG_WITH(privsep-path,
        [  --with-privsep-path=xxx Path for privilege separation chroot (default=/var/empty)],
        [
-               if test "x$withval" != "$no" ; then
+               if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
+                   test "x${withval}" != "xyes"; then
                        PRIVSEP_PATH=$withval
                fi
        ]
@@ -2492,7 +2751,8 @@ AC_SUBST(PRIVSEP_PATH)
 AC_ARG_WITH(xauth,
        [  --with-xauth=PATH       Specify path to xauth program ],
        [
-               if test "x$withval" != "xno" ; then
+               if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
+                   test "x${withval}" != "xyes"; then
                        xauth_path=$withval
                fi
        ],
@@ -2610,7 +2870,7 @@ AC_ARG_WITH(md5-passwords,
 AC_ARG_WITH(shadow,
        [  --without-shadow        Disable shadow password support],
        [
-               if test "x$withval" = "xno" ; then      
+               if test "x$withval" = "xno" ; then
                        AC_DEFINE(DISABLE_SHADOW)
                        disable_shadow=yes
                fi
@@ -2645,7 +2905,7 @@ else
        AC_ARG_WITH(ipaddr-display,
                [  --with-ipaddr-display   Use ip address instead of hostname in \$DISPLAY],
                [
-                       if test "x$withval" != "xno" ; then     
+                       if test "x$withval" != "xno" ; then
                                AC_DEFINE(IPADDR_IN_DISPLAY)
                                DISPLAY_HACK_MSG="yes"
                        fi
@@ -2677,8 +2937,8 @@ if test "x$etc_default_login" != "xno"; then
 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
+if test $ac_cv_func_login_getcapbool = "yes" && \
+       test $ac_cv_header_login_cap_h = "yes" ; then
        external_path_file=/etc/login.conf
 fi
 
@@ -2691,7 +2951,7 @@ AC_ARG_WITH(default-path,
                        AC_MSG_WARN([
 --with-default-path=PATH has no effect on this system.
 Edit /etc/login.conf instead.])
-               elif test "x$withval" != "xno" ; then   
+               elif test "x$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
@@ -2732,11 +2992,11 @@ main()
 {
        FILE *fd;
        int rc;
-       
+
        fd = fopen(DATA,"w");
        if(fd == NULL)
                exit(1);
-       
+
        if ((rc = fprintf(fd,"%s", _PATH_STDPATH)) < 0)
                exit(1);
 
@@ -2773,7 +3033,8 @@ fi
 AC_ARG_WITH(superuser-path,
        [  --with-superuser-path=  Specify different path for super-user],
        [
-               if test "x$withval" != "xno" ; then
+               if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
+                   test "x${withval}" != "xyes"; then
                        AC_DEFINE_UNQUOTED(SUPERUSER_PATH, "$withval")
                        superuser_path=$withval
                fi
@@ -2809,7 +3070,7 @@ BSD_AUTH_MSG=no
 AC_ARG_WITH(bsd-auth,
        [  --with-bsd-auth         Enable BSD auth support],
        [
-               if test "x$withval" != "xno" ; then     
+               if test "x$withval" != "xno" ; then
                        AC_DEFINE(BSD_AUTH)
                        BSD_AUTH_MSG=yes
                fi
@@ -2819,7 +3080,7 @@ AC_ARG_WITH(bsd-auth,
 # Where to place sshd.pid
 piddir=/var/run
 # make sure the directory exists
-if test ! -d $piddir ; then    
+if test ! -d $piddir ; then
        piddir=`eval echo ${sysconfdir}`
        case $piddir in
                NONE/*) piddir=`echo $piddir | sed "s~NONE~$ac_default_prefix~"` ;;
@@ -2829,9 +3090,10 @@ fi
 AC_ARG_WITH(pid-dir,
        [  --with-pid-dir=PATH     Specify location of ssh.pid file],
        [
-               if test "x$withval" != "xno" ; then     
+               if test -n "$withval"  &&  test "x$withval" != "xno"  &&  \
+                   test "x${withval}" != "xyes"; then
                        piddir=$withval
-                       if test ! -d $piddir ; then     
+                       if test ! -d $piddir ; then
                        AC_MSG_WARN([** no $piddir directory on this system **])
                        fi
                fi
@@ -2909,9 +3171,9 @@ AC_ARG_ENABLE(pututxline,
 AC_ARG_WITH(lastlog,
   [  --with-lastlog=FILE|DIR specify lastlog location [common locations]],
        [
-               if test "x$withval" = "xno" ; then      
+               if test "x$withval" = "xno" ; then
                        AC_DEFINE(DISABLE_LASTLOG)
-               else
+               elif test -n "$withval"  &&  test "x${withval}" != "xyes"; then
                        conf_lastlog_location=$withval
                fi
        ]
@@ -2978,7 +3240,7 @@ fi
 
 if test -n "$conf_lastlog_location"; then
        AC_DEFINE_UNQUOTED(CONF_LASTLOG_FILE, "$conf_lastlog_location")
-fi     
+fi
 
 dnl utmp detection
 AC_MSG_CHECKING([if your system defines UTMP_FILE])
@@ -3008,7 +3270,7 @@ if test -z "$conf_utmp_location"; then
 fi
 if test -n "$conf_utmp_location"; then
        AC_DEFINE_UNQUOTED(CONF_UTMP_FILE, "$conf_utmp_location")
-fi     
+fi
 
 dnl wtmp detection
 AC_MSG_CHECKING([if your system defines WTMP_FILE])
@@ -3038,7 +3300,7 @@ if test -z "$conf_wtmp_location"; then
 fi
 if test -n "$conf_wtmp_location"; then
        AC_DEFINE_UNQUOTED(CONF_WTMP_FILE, "$conf_wtmp_location")
-fi     
+fi
 
 
 dnl utmpx detection - I don't know any system so perverse as to require
@@ -3066,7 +3328,7 @@ if test -z "$conf_utmpx_location"; then
        fi
 else
        AC_DEFINE_UNQUOTED(CONF_UTMPX_FILE, "$conf_utmpx_location")
-fi     
+fi
 
 dnl wtmpx detection
 AC_MSG_CHECKING([if your system defines WTMPX_FILE])
@@ -3091,7 +3353,7 @@ if test -z "$conf_wtmpx_location"; then
        fi
 else
        AC_DEFINE_UNQUOTED(CONF_WTMPX_FILE, "$conf_wtmpx_location")
-fi     
+fi
 
 
 if test ! -z "$blibpath" ; then
@@ -3107,6 +3369,10 @@ if test "$ac_cv_lib_pam_pam_set_item" = yes ; then
        LIBS=`echo $LIBS | sed 's/-ldl //'`
 fi
 
+dnl Adding -Werror to CFLAGS early prevents configure tests from running.
+dnl Add now.
+CFLAGS="$CFLAGS $werror_flags"
+
 AC_EXEEXT
 AC_CONFIG_FILES([Makefile buildpkg.sh opensshd.init openbsd-compat/Makefile \
        scard/Makefile ssh_prng_cmds survey.sh])
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