autoconf: fix --with(out)-sendfile-support option handling
[samba.git] / source3 / configure.in
index 48a83459e6d82228752672d11d0bbb5932a10764..9d7fb5ddeb3982515685a546939a2eb4d5cea9c5 100644 (file)
@@ -208,15 +208,14 @@ AC_SAMBA_PERL([true], [merged_build_possible=no])
 
 AC_CHECK_TOOL(AR, ar)
 
-dnl Check if we use GNU ld
-LD=ld
+dnl Check if we (actually our C compiler!) use GNU ld
 AC_PROG_LD_GNU
 
 dnl Certain versions of GNU ld the default is not to have the
 dnl --allow-shlib-undefined flag defined.  This causes a stackload of
 dnl warnings when building modules.
 if test "$ac_cv_prog_gnu_ld" = "yes"; then
-       ac_cv_gnu_ld_version=`$LD -v 2>/dev/null | head -1`
+       ac_cv_gnu_ld_version=`$CC -Wl,-v /dev/null 2>&1 < /dev/null | grep "GNU ld"`
        AC_MSG_CHECKING(GNU ld release date)
        changequote(,)dnl
        ac_cv_gnu_ld_date=`echo $ac_cv_gnu_ld_version | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
@@ -262,7 +261,7 @@ else
 fi
 AC_SUBST(BROKEN_CC)
 
-dnl Check if the C compiler understands -Werror
+dnl Check if the C compiler understands -Werror (GNU)
 AC_CACHE_CHECK([that the C compiler understands -Werror],samba_cv_HAVE_Werror, [
  AC_TRY_RUN_STRICT([
   int main(void)
@@ -284,7 +283,7 @@ AC_CACHE_CHECK([that the C compiler understands -w2],samba_cv_HAVE_w2, [
 if test x"$samba_cv_HAVE_w2" = x"yes"; then
    Werror_FLAGS="-w2"
 else
-dnl Check if the C compiler understands -errwarn
+dnl Check if the C compiler understands -errwarn (Sun)
 AC_CACHE_CHECK([that the C compiler understands -errwarn],samba_cv_HAVE_errwarn, [
   AC_TRY_RUN_STRICT([
    int main(void)
@@ -294,6 +293,18 @@ AC_CACHE_CHECK([that the C compiler understands -errwarn],samba_cv_HAVE_errwarn,
    samba_cv_HAVE_errwarn=yes,samba_cv_HAVE_errwarn=no,samba_cv_HAVE_errwarn=cross)])
 if test x"$samba_cv_HAVE_errwarn" = x"yes"; then
    Werror_FLAGS="-errwarn=%all"
+else
+dnl Check if the C compiler understands -qhalt (IBM)
+AC_CACHE_CHECK([that the C compiler understands -qhalt],samba_cv_HAVE_qhalt, [
+  AC_TRY_RUN_STRICT([
+   int main(void)
+   {
+       return 0;
+   }],[$CFLAGS -qhalt=w],[$CPPFLAGS],[$LDFLAGS],
+   samba_cv_HAVE_qhalt=yes,samba_cv_HAVE_qhalt=no,samba_cv_HAVE_qhalt=cross)])
+if test x"$samba_cv_HAVE_qhalt" = x"yes"; then
+   Werror_FLAGS="-qhalt=w"
+fi
 fi
 fi
 fi
@@ -387,7 +398,7 @@ dnl These have to be built static:
 default_static_modules="pdb_smbpasswd pdb_tdbsam pdb_wbc_sam rpc_lsarpc rpc_samr rpc_winreg rpc_initshutdown rpc_dssetup rpc_wkssvc rpc_svcctl rpc_ntsvcs rpc_netlogon rpc_netdfs rpc_srvsvc rpc_spoolss rpc_eventlog auth_sam auth_unix auth_winbind auth_wbc auth_server auth_domain auth_builtin auth_netlogond vfs_default nss_info_template"
 
 dnl These are preferably build shared, and static if dlopen() is not available
-default_shared_modules="vfs_recycle vfs_audit vfs_extd_audit vfs_full_audit vfs_netatalk vfs_fake_perms vfs_default_quota vfs_readonly vfs_cap vfs_expand_msdfs vfs_shadow_copy vfs_shadow_copy2 charset_CP850 charset_CP437 auth_script vfs_readahead vfs_xattr_tdb vfs_streams_xattr vfs_streams_depot vfs_acl_xattr vfs_acl_tdb vfs_smb_traffic_analyzer vfs_preopen vfs_catia"
+default_shared_modules="vfs_recycle vfs_audit vfs_extd_audit vfs_full_audit vfs_netatalk vfs_fake_perms vfs_default_quota vfs_readonly vfs_cap vfs_expand_msdfs vfs_shadow_copy vfs_shadow_copy2 charset_CP850 charset_CP437 auth_script vfs_readahead vfs_xattr_tdb vfs_streams_xattr vfs_streams_depot vfs_acl_xattr vfs_acl_tdb vfs_smb_traffic_analyzer vfs_preopen vfs_catia vfs_scannedonly"
 
 if test "x$developer" = xyes; then
    default_static_modules="$default_static_modules rpc_rpcecho pdb_ads"
@@ -657,7 +668,7 @@ AUTH_LIBS="${AUTH_LIBS} ${CRYPT_LIBS}"
 
 AC_CHECK_HEADERS(aio.h sys/fcntl.h sys/select.h fcntl.h sys/time.h sys/unistd.h rpc/nettype.h)
 AC_CHECK_HEADERS(unistd.h grp.h sys/id.h memory.h alloca.h)
-AC_CHECK_HEADERS(limits.h float.h pthread.h libintl.h)
+AC_CHECK_HEADERS(limits.h float.h libintl.h)
 AC_CHECK_HEADERS(rpc/rpc.h rpcsvc/nis.h rpcsvc/ypclnt.h)
 AC_CHECK_HEADERS(sys/param.h ctype.h sys/wait.h sys/resource.h sys/ioctl.h sys/ipc.h sys/prctl.h sys/sysctl.h)
 AC_CHECK_HEADERS(sys/mman.h sys/filio.h sys/priv.h sys/shm.h string.h strings.h stdlib.h)
@@ -745,15 +756,21 @@ if test x$enable_cups != xno; then
 
         if test "x$CUPS_CONFIG" != x; then
 
-               ac_save_CFLAGS=$CFLAGS
                ac_save_LDFLAGS=$LDFLAGS
                ac_save_PRINT_LIBS=$PRINT_LIBS
-               CFLAGS="$CFLAGS `$CUPS_CONFIG --cflags`"
-               LDFLAGS="$LDFLAGS `$CUPS_CONFIG --ldflags`"
-               PRINT_LIBS="$PRINT_LIBS -lcups"
                AC_CHECK_HEADERS(cups/cups.h cups/language.h)
+
                if test x"$ac_cv_header_cups_cups_h" = xyes -a \
                        x"$ac_cv_header_cups_language_h" = xyes; then
+                       # try linking with -lcups alone first. That should work unless libcups is
+                       # underlinked. With cups-config --libs we pull in unwanted and unneeded
+                       # dendencies including thread libraries - use cups-config only if really
+                       # required. 
+                       AC_CHECK_LIB_EXT(cups, ac_save_PRINT_LIBS , httpConnect,
+                               [PRINT_LIBS"$ac_save_PRINT_LIBS -lcups"],
+                               [AC_MSG_WARN([your cups library doesn't link with -lcups alone, it might be underlinked.]) ;
+                                PRINT_LIBS="$ac_save_PRINT_LIBS `$CUPS_CONFIG --libs`"])
+
                        AC_DEFINE(HAVE_CUPS,1,[Whether we have CUPS])
                        samba_cv_HAVE_CUPS=yes
                        AC_CHECK_LIB_EXT(cups, PRINT_LIBS, httpConnectEncrypt)
@@ -1006,8 +1023,9 @@ AC_CHECK_FUNCS(getrlimit fsync fdatasync setpgid)
 AC_CHECK_FUNCS(setsid glob strpbrk crypt16 getauthuid)
 AC_CHECK_FUNCS(sigprocmask sigblock sigaction sigset innetgr setnetgrent getnetgrent endnetgrent)
 AC_CHECK_FUNCS(initgroups select poll rdchk getgrnam getgrent pathconf)
+AC_CHECK_FUNCS(getgrset)
 AC_CHECK_FUNCS(setpriv setgidx setuidx setgroups sysconf stat64 fstat64)
-AC_CHECK_FUNCS(lstat64 fopen64 atexit grantpt lseek64 ftruncate64)
+AC_CHECK_FUNCS(lstat64 fopen64 atexit grantpt lseek64 ftruncate64 posix_fallocate posix_fallocate64)
 AC_CHECK_FUNCS(fseek64 fseeko64 ftell64 ftello64 setluid getpwanam)
 AC_CHECK_FUNCS(opendir64 readdir64 seekdir64 telldir64 rewinddir64 closedir64)
 AC_CHECK_FUNCS(getpwent_r)
@@ -1194,7 +1212,7 @@ AC_DEFINE(HAVE_PRCTL, 1, [Whether prctl is available]),[])
 case "$host_os" in
     *linux* | gnu* | k*bsd*-gnu | kopensolaris*-gnu)
        # glibc <= 2.3.2 has a broken getgrouplist
-       AC_TRY_RUN([
+       AC_CACHE_CHECK([for good getgrouplist],samba_cv_linux_getgrouplist_ok,[AC_TRY_RUN([
 #include <unistd.h>
 #include <sys/utsname.h>
 main() {
@@ -1210,8 +1228,10 @@ main() {
 #endif
        exit(0);
 }
-], [linux_getgrouplist_ok=yes], [linux_getgrouplist_ok=no])
-       if test x"$linux_getgrouplist_ok" = x"yes"; then
+], [samba_cv_linux_getgrouplist_ok=yes],
+   [samba_cv_linux_getgrouplist_ok=no],
+   [samba_cv_linux_getgrouplist_ok=cross])])
+       if test x"$samba_cv_linux_getgrouplist_ok" = x"yes"; then
           AC_DEFINE(HAVE_GETGROUPLIST, 1, [Have good getgrouplist])
        fi
        ;;
@@ -1311,6 +1331,22 @@ if test x"$samba_cv_stat_dos_flags" = x"yes" ; then
     AC_DEFINE(HAVE_STAT_DOS_FLAGS, 1, [whether there is DOS flags support in the stat struct])
 fi
 
+AC_CACHE_CHECK([whether we can compile with __attribute__((destructor))],
+              samba_cv_function_attribute_destructor,
+              [
+                AC_COMPILE_IFELSE(
+                       [
+                               __attribute__((destructor))
+                               static void cleanup(void) { }
+                       ],
+                       samba_cv_function_attribute_destructor=yes)
+               ])
+
+if test x"$samba_cv_function_attribute_destructor" = xyes ; then
+   AC_DEFINE(HAVE_FUNCTION_ATTRIBUTE_DESTRUCTOR, 1,
+            [whether we can compile with __attribute__((destructor))])
+fi
+
 #####################################
 # needed for SRV lookups
 AC_CHECK_LIB(resolv, dn_expand)
@@ -1423,9 +1459,9 @@ then
        [
                cat > conftest.c <<EOF
 int foo;
-main () { return 0;}
+int main () { return 0;}
 EOF
-               if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -pie -fPIE -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD])
+               if AC_TRY_COMMAND_NO_STDERR([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -pie -fPIE -o conftest conftest.c])
                then
                        samba_cv_fpie=yes
                else
@@ -1508,19 +1544,21 @@ DSO_EXPORTS=""
                        ;;
                *solaris*) AC_DEFINE(SUNOS5,1,[Whether the host os is solaris])
                        BLDSHARED="true"
-                       LDSHFLAGS="-G"
-                       SONAMEFLAG="-h "
                        if test "${GCC}" = "yes"; then
                                PICFLAG="-fPIC"
                                SONAMEFLAG="-Wl,-soname="
                                if test "${ac_cv_prog_gnu_ld}" = "yes"; then
                                        DYNEXP="-Wl,-E"
                                fi
+                               LDSHFLAGS="-shared"
                        else
                                PICFLAG="-KPIC"
-                               ## ${CFLAGS} added for building 64-bit shared
-                               ## libs using Sun's Compiler
-                               LDSHFLAGS="-G \${CFLAGS}"
+                               LDSHFLAGS="-G"
+                       fi
+                       if test "$ac_cv_prog_gnu_ld" = "yes"; then
+                               SONAMEFLAG="-Wl,-soname="
+                       else
+                               SONAMEFLAG="-Wl,-h,"
                        fi
                        AC_DEFINE(STAT_ST_BLOCKSIZE,512,[The size of a block])
                        AC_DEFINE(BROKEN_GETGRNAM,1,[Does getgrnam work correctly])
@@ -1556,9 +1594,8 @@ DSO_EXPORTS=""
                        ;;
                        esac
                        BLDSHARED="true"
-                       LDSHFLAGS="-set_version sgi1.0 -shared"
-                       SONAMEFLAG="-soname "
-                       SHLD="\${LD}"
+                       LDSHFLAGS="-Wl,-set_version,sgi1.0 -shared"
+                       SONAMEFLAG="-Wl,-soname,"
                        if test "${GCC}" = "yes"; then
                                PICFLAG="-fPIC"
                        else
@@ -1577,7 +1614,7 @@ DSO_EXPORTS=""
                        # .po will just create compile warnings, use po.o:
                        if test "${GCC}" != "yes"; then
                                ## for funky AIX compiler using strncpy()
-                               CFLAGS="$CFLAGS -D_LINUX_SOURCE_COMPAT -qmaxmem=32000"
+                               CFLAGS="$CFLAGS -D_LINUX_SOURCE_COMPAT -qmaxmem=32000 -qhalt=e"
                        fi
 
                        AC_DEFINE(STAT_ST_BLOCKSIZE,DEV_BSIZE,[The size of a block])
@@ -1607,14 +1644,13 @@ DSO_EXPORTS=""
                        AC_DEFINE(STAT_ST_BLOCKSIZE,8192,[The size of a block])
                        AC_DEFINE(POSIX_ACL_NEEDS_MASK,1,[Does a POSIX ACL need a mask element])
                        ;;
-               *qnx*) AC_DEFINE(QNX,1,[Whether the host os is qnx])
-                       AC_DEFINE(STAT_ST_BLOCKSIZE,512)
-                       ;;
                *osf*) AC_DEFINE(OSF1,1,[Whether the host os is osf1])
                        BLDSHARED="true"
                        LDSHFLAGS="-shared"
                        SONAMEFLAG="-Wl,-soname,"
-                       PICFLAG="-fPIC"
+                       if test "${GCC}" = "yes"; then
+                               PICFLAG="-fPIC"
+                       fi
                        AC_DEFINE(STAT_ST_BLOCKSIZE,512)
                        AC_DEFINE(BROKEN_GETGRNAM,1,[Does getgrnam work correctly])
                        ;;
@@ -1694,6 +1730,7 @@ fi
 
 AC_MSG_RESULT($BLDSHARED)
 
+saved_before_as_needed_ldflags="$LDFLAGS"
 for flags in "-Wl,--as-needed" "-Wl,-z,ignore" "-z ignore" ; do
        saved_ldflags="$LDFLAGS"
        AC_MSG_CHECKING([if $flags works])
@@ -1707,6 +1744,25 @@ for flags in "-Wl,--as-needed" "-Wl,-z,ignore" "-z ignore" ; do
        test x"$ld_as_needed_flag_found" = xyes && break
 done
 
+# check if we have to disable LD_AS_NEEDED_FLAG:
+# On some systems for a veriety of reasons linking with
+# -Wl,--as-needed -lreadline -lncurses fails
+# we have to retest, if these combination is detected before.
+# Bugzilla #7209
+
+if test x$ac_cv_lib_readline_rl_callback_handler_install = xyes ; then
+       if test x$ld_as_needed_flag_found = xyes ; then
+               AC_MSG_CHECKING([if $LD_AS_NEEDED_FLAG works with readline])
+               # try if check no fails
+               save_LIBS=$LIBS
+               LIBS="$LIBS $TERMLIBS"
+               AC_TRY_LINK([], [rl_callback_handler_install();], [AC_MSG_RESULT([yes])],[ AC_MSG_RESULT([no]); LDFLAGS="$saved_before_as_needed_ldflags"])
+               LIBS="$save_LIBS"
+        fi
+fi
+
+
+
 # for historical reasons almost all linkers don't complain about unresolved
 # symbols in shared libs. Except for the internal samba modules we want to get
 # errors when we produce a shared lib with unresolved symbols. On some
@@ -1759,10 +1815,13 @@ AC_CACHE_CHECK([whether building shared libraries actually works],
    ac_cv_shlib_works=no
    # The $SHLD and $LDSHFLAGS variables may contain references to other
    # variables so they need to be eval'ed.
-   $CC $CPPFLAGS $CFLAGS $PICFLAG -c -o \
-       shlib.o ${srcdir-.}/../tests/shlib.c && \
-   `eval echo $SHLD` `eval echo $LDSHFLAGS` -o "shlib.$SHLIBEXT" \
-        shlib.o && ac_cv_shlib_works=yes
+   if AC_TRY_COMMAND([$CC $CPPFLAGS $CFLAGS $PICFLAG -c -o shlib.o ${srcdir-.}/../tests/shlib.c 1>&AS_MESSAGE_LOG_FD])
+   then
+     if AC_TRY_COMMAND([`eval echo "$SHLD $LDSHFLAGS $PICFLAG"` -o "shlib.$SHLIBEXT" shlib.o 1>&AS_MESSAGE_LOG_FD])
+     then
+       ac_cv_shlib_works=yes
+     fi
+   fi
    rm -f "shlib.$SHLIBEXT" shlib.o
 
 ])
@@ -1924,7 +1983,7 @@ AC_ARG_ENABLE(external_libtdb,
 
 if test "x$enable_external_libtdb" != xno
 then
-       PKG_CHECK_MODULES(LIBTDB, tdb >= 1.1.4,
+       PKG_CHECK_MODULES(LIBTDB, tdb >= 1.2.1,
                [ enable_external_libtdb=yes ],
                [
                if test x$enable_external_libtdb = xyes; then
@@ -1999,6 +2058,31 @@ if test x"$samba_cv_SIZEOF_TIME_T" = x"yes"; then
     AC_DEFINE(SIZEOF_TIME_T,8,[The size of the 'time_t' type])
 fi
 
+AC_CACHE_CHECK([for TIME_T_MAX],samba_cv_TIME_T_MAX,[
+AC_TRY_RUN([#include <time.h>
+main() {
+       struct tm *tm;
+       if (sizeof(time_t) == 8) {
+               time_t max_time = 0x7fffffffffffffffll;
+               tm = gmtime(&max_time);
+               /* This should fail with 32-bit tm_year. */
+               if (tm == NULL) {
+                       /* Max time_t that works with 32-bit int tm_year in struct tm. */
+                       max_time = 67768036191676799ll;
+                       tm = gmtime(&max_time);
+                       if (tm) {
+                               exit(0);
+                       }
+               }
+       }
+       exit(1);
+}],
+samba_cv_TIME_T_MAX=yes,samba_cv_TIME_T_MAX=no,samba_cv_TIME_T_MAX=cross)])
+if test x"$samba_cv_TIME_T_MAX" = x"yes"; then
+    AC_DEFINE(TIME_T_MAX,67768036191676799ll,[The maximum value of the 'time_t' type])
+fi
+
+
 AC_CACHE_CHECK([for 64 bit off_t],samba_cv_SIZEOF_OFF_T,[
 AC_TRY_RUN([#include <stdio.h>
 #include <sys/stat.h>
@@ -2215,7 +2299,7 @@ dnl  We need to check for many of them
 dnl  But we don't need to do each and every one, because our code uses
 dnl  mostly just the utmp (not utmpx) fields.
 
-AC_CHECK_FUNCS(pututline pututxline updwtmp updwtmpx getutmpx)
+AC_CHECK_FUNCS(pututline pututxline updwtmp updwtmpx getutmpx getutxent)
 
 AC_CACHE_CHECK([for ut_name in utmp],samba_cv_HAVE_UT_UT_NAME,[
 AC_TRY_COMPILE([#include <sys/types.h>
@@ -2621,11 +2705,32 @@ AC_SUBST(SMB_FAM_LIBS)
 #################################################
 # Check for DMAPI interfaces in libdm/libjfsdm/libxsdm
 
-SMB_CHECK_DMAPI([], AC_MSG_NOTICE(DMAPI support not present) )
+
+with_dmapi_support=auto
+AC_MSG_CHECKING(whether to use DMAPI support)
+AC_ARG_WITH(dmapi,
+[AS_HELP_STRING([--with-dmapi], [Include DMAPI/XDSM support (default=auto)])],
+[ case "$withval" in
+  yes|no)
+    with_dmapi_support=$withval
+    ;;
+  esac ]
+)
+AC_MSG_RESULT([$with_dmapi_support])
+
+if test x"$with_dmapi_support" != xno ; then
+       SMB_CHECK_DMAPI([], [
+               AC_MSG_NOTICE(DMAPI support not present)
+               if test x"$with_dmapi_support" = xyes ; then
+                       AC_MSG_ERROR(no DMAPI support found but requested!)
+               fi
+               ]
+       )
+fi
 
 # Add TSM SM VFS module only if there are both GPFS and DMAPI support
 # Theoretically it should work with AIX JFS2 too but this needs testing
-if test x"$samba_cv_HAVE_GPFS" = x"yes" && test x"$samba_dmapi_libs" != x"" ; then
+if test x"$ac_cv_header_gpfs_gpl_h" = x"yes" && test x"$samba_dmapi_libs" != x"" ; then
     default_shared_modules="$default_shared_modules vfs_tsmsm"
 fi
 
@@ -2920,6 +3025,22 @@ exit(1);
   fi
 fi
 
+# glibc up to 2.3.6 had dangerously broken posix_fallocate(). DON'T USE IT.
+AC_CACHE_CHECK([for broken posix_fallocate],samba_cv_HAVE_BROKEN_POSIX_FALLOCATE,[
+AC_TRY_COMPILE([
+  #define _XOPEN_SOURCE 600
+  #include <stdlib.h>
+  #if defined(__GLIBC__) && ((__GLIBC__ < 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 4))
+    probably broken posix_fallocate
+  #endif
+], [
+], 
+samba_cv_HAVE_BROKEN_POSIX_FALLOCATE=no,samba_cv_HAVE_BROKEN_POSIX_FALLOCATE=yes)])
+if test x"$samba_cv_HAVE_BROKEN_POSIX_FALLOCATE" = xyes; then
+       AC_DEFINE(HAVE_BROKEN_POSIX_FALLOCATE,, Whether we have a broken posix_fallocate)
+fi
+
+
 AC_CACHE_CHECK([for st_blocks in struct stat],samba_cv_HAVE_STAT_ST_BLOCKS,[
 AC_TRY_COMPILE([#include <sys/types.h>
 #include <sys/stat.h>
@@ -3592,6 +3713,9 @@ if test x"$with_ads_support" != x"no"; then
   AC_CHECK_FUNC_EXT(krb5_get_creds_opt_set_impersonate, $KRB5_LIBS)
   AC_CHECK_FUNC_EXT(krb5_get_creds, $KRB5_LIBS)
   AC_CHECK_FUNC_EXT(krb5_get_credentials_for_user, $KRB5_LIBS)
+  AC_CHECK_FUNC_EXT(krb5_get_host_realm, $KRB5_LIBS)
+  AC_CHECK_FUNC_EXT(krb5_free_host_realm, $KRB5_LIBS)
+
   # MIT krb5 1.8 does not expose this call (yet)
   AC_CHECK_DECLS(krb5_get_credentials_for_user, [], [], [#include <krb5.h>])
 
@@ -3934,6 +4058,18 @@ if test x"$with_ads_support" != x"no"; then
                [Whether the WRFILE:-keytab is supported])
   fi
 
+  AC_CACHE_CHECK([for krb5_realm type],
+                samba_cv_HAVE_KRB5_REALM_TYPE,[
+    AC_TRY_COMPILE([#include <krb5.h>],
+      [krb5_realm realm;],
+      samba_cv_HAVE_KRB5_REALM_TYPE=yes,
+      samba_cv_HAVE_KRB5_REALM_TYPE=no)])
+
+  if test x"$samba_cv_HAVE_KRB5_REALM_TYPE" = x"yes"; then
+    AC_DEFINE(HAVE_KRB5_REALM_TYPE,1,
+               [Whether the type krb5_realm exists])
+  fi
+
   AC_CACHE_CHECK([for krb5_princ_realm returns krb5_realm or krb5_data],
                samba_cv_KRB5_PRINC_REALM_RETURNS_REALM,[
     AC_TRY_COMPILE([#include <krb5.h>],
@@ -4427,6 +4563,39 @@ if test x"${try_pam}" != x"no";then
        AC_MSG_RESULT([$create_pam_modules])
 fi # try_pam != no
 
+#################################################
+# check for PAM_RADIO_TYPE
+AC_TRY_COMPILE([
+#if (!defined(LINUX))
+
+#define PAM_EXTERN extern
+#if defined(HAVE_SECURITY_PAM_APPL_H)
+#include <security/pam_appl.h>
+#elif defined(HAVE_PAM_PAM_APPL_H)
+#include <pam/pam_appl.h>
+#endif
+
+#endif
+
+#if defined(HAVE_SECURITY_PAM_MODULES_H)
+#include <security/pam_modules.h>
+#elif defined(HAVE_PAM_PAM_MODULES_H)
+#include <pam/pam_modules.h>
+#endif
+
+#if defined(HAVE_SECURITY__PAM_MACROS_H)
+#include <security/_pam_macros.h>
+#elif defined(HAVE_PAM__PAM_MACROS_H)
+#include <pam/_pam_macros.h>
+#endif
+
+#ifdef HAVE_SECURITY_PAM_EXT_H
+#include <security/pam_ext.h>
+#endif
+],
+[int i; i = PAM_RADIO_TYPE; ],
+AC_DEFINE(HAVE_PAM_RADIO_TYPE, 1, [Define to 1 if PAM_RADIO_TYPE is available]),[])
+
 #################################################
 # check for pam_smbpass support
 PAM_MODULES=""
@@ -5170,24 +5339,7 @@ AC_CHECK_HEADERS(ctdb.h ctdb_private.h,,,[
 #include <ctdb.h>
 ])
 
-AC_HAVE_DECL(CTDB_CONTROL_TRANS2_COMMIT_RETRY,[
-#include "confdefs.h"
-#define NO_CONFIG_H
-#include "replace.h"
-#include "system/wait.h"
-#include "system/network.h"
-#include <talloc.h>
-#include <tdb.h>
-#include <ctdb.h>
-#include <ctdb_private.h>
-])
-if test x"$ac_cv_have_CTDB_CONTROL_TRANS2_COMMIT_RETRY_decl" = x"yes"; then
-       ctdb_broken=no
-else
-       ctdb_broken="missing transaction support"
-fi
-
-AC_HAVE_DECL(CTDB_CONTROL_TRANS2_ACTIVE,[
+AC_HAVE_DECL(CTDB_CONTROL_TRANS3_COMMIT,[
 #include "confdefs.h"
 #define NO_CONFIG_H
 #include "replace.h"
@@ -5198,10 +5350,10 @@ AC_HAVE_DECL(CTDB_CONTROL_TRANS2_ACTIVE,[
 #include <ctdb.h>
 #include <ctdb_private.h>
 ])
-if test x"$ac_cv_have_CTDB_CONTROL_TRANS2_ACTIVE_decl" = x"yes"; then
+if test x"$ac_cv_have_CTDB_CONTROL_TRANS3_COMMIT_decl" = x"yes"; then
        ctdb_broken=no
 else
-       ctdb_broken="transaction support too old"
+       ctdb_broken="ctdb transaction support missing or too old"
 fi
 
 # in ctdb 1.0.57 ctdb_control_tcp was temparary renamed to ctdb_tcp_client
@@ -5544,16 +5696,23 @@ fi
 #################################################
 # check for sendfile support
 
-with_sendfile_support=yes
-AC_MSG_CHECKING(whether to check to support sendfile)
+AC_MSG_CHECKING(whether sendfile support should be built in)
 AC_ARG_WITH(sendfile-support,
-[AS_HELP_STRING([--with-sendfile-support], [Check for sendfile support (default=yes)])],
+[AS_HELP_STRING([--with-sendfile-support], [Whether sendfile support should be built in (default=auto)])],
 [ case "$withval" in
-  yes)
-
-       AC_MSG_RESULT(yes);
+  yes|no)
+       AC_MSG_RESULT($withval);
+       with_sendfile_support=$withval
+       ;;
+  *)
+       AC_MSG_RESULT(yes)
+       with_sendfile_support=auto
+       ;;
+  esac ],
+)
 
-       case "$host_os" in
+if test x$with_sendfile_support != xno ; then
+    case "$host_os" in
        *linux* | gnu* | k*bsd*-gnu | kopensolaris*-gnu)
                AC_CACHE_CHECK([for linux sendfile64 support],samba_cv_HAVE_SENDFILE64,[
                AC_TRY_LINK([#include <sys/sendfile.h>],
@@ -5789,14 +5948,12 @@ samba_cv_HAVE_SENDFILE=yes,samba_cv_HAVE_SENDFILE=no)])
        ;;
        *)
        ;;
-        esac
-        ;;
-  *)
-    AC_MSG_RESULT(no)
-    ;;
-  esac ],
-  AC_MSG_RESULT(yes)
-)
+    esac
+fi
+
+if test x$with_sendfile_support = xyes -a x"$samba_cv_HAVE_SENDFILE" != xyes ; then
+       AC_MSG_ERROR(sendfile support requested but sendfile not available )
+fi
 
 ############################################
 # See if we have the Linux readahead syscall.
@@ -5922,7 +6079,6 @@ WINBIND_NSS="../nsswitch/libnss_winbind.$SHLIBEXT"
 WINBIND_WINS_NSS="../nsswitch/libnss_wins.$SHLIBEXT"
 WINBIND_NSS_LDSHFLAGS=$LDSHFLAGS
 NSSSONAMEVERSIONSUFFIX=""
-WINBIND_NSS_PTHREAD=""
 
 case "$host_os" in
        *linux* | gnu* | k*bsd*-gnu | kopensolaris*-gnu)
@@ -6064,12 +6220,6 @@ else
         AC_MSG_RESULT(no$winbind_no_reason)
 fi
 
-AC_CHECK_LIB(pthread, pthread_mutex_lock, [WINBIND_NSS_PTHREAD="-lpthread"
-                       AC_DEFINE(HAVE_PTHREAD, 1, [whether pthread exists])
-                       samba_cv_HAVE_PTHREAD=yes],
-                       samba_cv_HAVE_PTHREAD=no)
-
-AC_SUBST(WINBIND_NSS_PTHREAD)
 AC_SUBST(WINBIND_NSS)
 AC_SUBST(WINBIND_WINS_NSS)
 AC_SUBST(WINBIND_NSS_LDSHFLAGS)
@@ -6225,16 +6375,77 @@ if test x"$enable_avahi" != x"no"; then
     fi
 fi
 
+
+#################################################
+# Set pthread stuff
+
+PTHREAD_CFLAGS=error
+PTHREAD_LDFLAGS=error
+
+# If it's error, then the user didn't 
+# define it.
+if test "x$PTHREAD_LDFLAGS" = xerror; then
+  AC_CHECK_LIB(pthread, pthread_attr_init, [
+            PTHREAD_CFLAGS="-D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS"
+            PTHREAD_LDFLAGS="-lpthread" ])
+fi
+
+if test "x$PTHREAD_LDFLAGS" = xerror; then
+  AC_CHECK_LIB(pthreads, pthread_attr_init, [
+            PTHREAD_CFLAGS="-D_THREAD_SAFE"
+            PTHREAD_LDFLAGS="-lpthreads" ])
+fi
+
+if test "x$PTHREAD_LDFLAGS" = xerror; then
+   AC_CHECK_LIB(c_r, pthread_attr_init, [
+               PTHREAD_CFLAGS="-D_THREAD_SAFE -pthread"
+               PTHREAD_LDFLAGS="-pthread" ])
+fi
+
+if test "x$PTHREAD_LDFLAGS" = xerror; then
+   AC_CHECK_FUNC(pthread_attr_init, [
+                PTHREAD_CFLAGS="-D_REENTRANT"
+                PTHREAD_LDFLAGS="-lpthread" ])
+fi
+
+# especially for HP-UX, where the AC_CHECK_FUNC macro fails to test for
+# pthread_attr_init. On pthread_mutex_lock it works there...
+if test "x$PTHREAD_LDFLAGS" = xerror; then
+   AC_CHECK_LIB(pthread, pthread_mutex_lock, [
+               PTHREAD_CFLAGS="-D_REENTRANT"
+               PTHREAD_LDFLAGS="-lpthread" ])
+fi
+
+AC_SUBST(PTHREAD_CFLAGS)
+AC_SUBST(PTHREAD_LDFLAGS)
+
+samba_cv_HAVE_PTHREAD=no
+if test x"$PTHREAD_CFLAGS" != xerror -a x"$PTHREAD_LDFLAGS" != xerror; then
+       samba_cv_HAVE_PTHREAD=yes
+       # now check for pthread.h with pthread-correct CFLAGS and LDFLAGS:
+       ac_save_CFLAGS=$CFLAGS
+       CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+       ac_save_LDFLAGS=$LDFLAGS
+       LDFLAGS="$LDFLAGS $PTHREAD_LDFLAGS"
+       AC_CHECK_HEADERS(pthread.h)
+       CFLAGS=$ac_save_CFLAGS
+       LDFLAGS=$ac_save_LDFLAGS
+       AC_DEFINE(HAVE_PTHREAD, 1, [Do we have pthreads around?])
+fi
+
 #################################################
 # Check if user wants pthreadpool support
 
 AC_ARG_ENABLE(pthreadpool,
-[AS_HELP_STRING([--enable-pthreadpool], [Enable pthreads pool helper support (default=auto)])])
+[AS_HELP_STRING([--enable-pthreadpool], [Enable pthreads pool helper support (default=no)])])
+
+if test x"$enable_pthreadpool" = xyes -a x"$samba_cv_HAVE_PTHREAD" != x"yes"; then
+       AC_MSG_ERROR([pthreadpool support cannot be enabled when pthread support was found])
+fi
 
-if test x"$enable_pthreadpool" != x"no" -a x"$samba_cv_HAVE_PTHREAD" = x"yes"; then
-    AC_TRY_LINK([#include "pthread.h"],
-    [pthread_create(NULL, NULL, NULL, NULL)],
-                   ,LIBS="$LIBS -lpthread")
+if test x"$enable_pthreadpool" = x"yes" -a x"$samba_cv_HAVE_PTHREAD" = x"yes"; then
+    LIBS="$LIBS $PTHREAD_LDFLAGS"
+    CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
     AC_DEFINE(WITH_PTHREADPOOL, 1, [Whether to include pthreadpool helpers])
     AC_SUBST(PTHREADPOOL_OBJ, "lib/pthreadpool.o")
 fi
@@ -6454,6 +6665,7 @@ SMB_MODULE(vfs_smb_traffic_analyzer, \$(VFS_SMB_TRAFFIC_ANALYZER_OBJ), "bin/smb_
 SMB_MODULE(vfs_onefs, \$(VFS_ONEFS), "bin/onefs.$SHLIBEXT", VFS)
 SMB_MODULE(vfs_onefs_shadow_copy, \$(VFS_ONEFS_SHADOW_COPY), "bin/onefs_shadow_copy.$SHLIBEXT", VFS)
 SMB_MODULE(vfs_dirsort, \$(VFS_DIRSORT_OBJ), "bin/dirsort.$SHLIBEXT", VFS)
+SMB_MODULE(vfs_scannedonly, \$(VFS_SCANNEDONLY_OBJ), "bin/scannedonly.$SHLIBEXT", VFS)
 
 SMB_SUBSYSTEM(VFS,smbd/vfs.o)