Autogen update

[nfs-utils.git] / aclocal / kerberos5.m4

diff --git a/aclocal/kerberos5.m4 b/aclocal/kerberos5.m4
new file mode 100644 (file)
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+++ b/aclocal/kerberos5.m4
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+dnl Checks for Kerberos
+dnl NOTE: while we intend to do generic gss-api, currently we
+dnl have a requirement to get an initial Kerberos machine
+dnl credential.  Thus, the requirement for Kerberos.
+dnl The Kerberos gssapi library will be dynamically loaded?
+AC_DEFUN([AC_KERBEROS_V5],[
+  AC_MSG_CHECKING(for Kerberos v5)
+  AC_ARG_WITH(krb5,
+  [AC_HELP_STRING([--with-krb5=DIR], [use Kerberos v5 installation in DIR])],
+  [ case "$withval" in
+    yes|no)
+       krb5_with=""
+       ;;
+    *)
+       krb5_with="$withval"
+       ;;
+    esac ]
+  )
+
+  for dir in $krb5_with /usr /usr/kerberos /usr/local /usr/local/krb5 \
+            /usr/krb5 /usr/heimdal /usr/local/heimdal /usr/athena ; do
+    dnl This ugly hack brought on by the split installation of
+    dnl MIT Kerberos on Fedora Core 1
+    K5CONFIG=""
+    if test -f $dir/bin/krb5-config; then
+      K5CONFIG=$dir/bin/krb5-config
+    elif test -f "/usr/kerberos/bin/krb5-config"; then
+      K5CONFIG="/usr/kerberos/bin/krb5-config"
+    fi
+    if test "$K5CONFIG" != ""; then
+      KRBCFLAGS=`$K5CONFIG --cflags`
+      KRBLIBS=`$K5CONFIG --libs gssapi`
+      K5VERS=`$K5CONFIG --version | head -n 1 | awk '{split($(4),v,"."); if (v@<:@"3"@:>@ == "") v@<:@"3"@:>@ = "0"; print v@<:@"1"@:>@v@<:@"2"@:>@v@<:@"3"@:>@ }'`
+      AC_DEFINE_UNQUOTED(KRB5_VERSION, $K5VERS, [Define this as the Kerberos version number])
+      if test -f $dir/include/gssapi/gssapi_krb5.h -a \
+                \( -f $dir/lib/libgssapi_krb5.a -o \
+                   -f $dir/lib/libgssapi_krb5.so \) ; then
+         AC_DEFINE(HAVE_KRB5, 1, [Define this if you have MIT Kerberos libraries])
+         KRBDIR="$dir"
+  dnl If we are using MIT K5 1.3.1 and before, we *MUST* use the
+  dnl private function (gss_krb5_ccache_name) to get correct
+  dnl behavior of changing the ccache used by gssapi.
+  dnl Starting in 1.3.2, we *DO NOT* want to use
+  dnl gss_krb5_ccache_name, instead we want to set KRB5CCNAME
+  dnl to get gssapi to use a different ccache
+         if test $K5VERS -le 131; then
+           AC_DEFINE(USE_GSS_KRB5_CCACHE_NAME, 1, [Define this if the private function, gss_krb5_cache_name, must be used to tell the Kerberos library which credentials cache to use. Otherwise, this is done by setting the KRB5CCNAME environment variable])
+         fi
+         gssapi_lib=gssapi_krb5
+         break
+      dnl The following ugly hack brought on by the split installation
+      dnl of Heimdal Kerberos on SuSe
+      elif test \( -f $dir/include/heim_err.h -o\
+                -f $dir/include/heimdal/heim_err.h \) -a \
+                -f $dir/lib/libroken.a; then
+         AC_DEFINE(HAVE_HEIMDAL, 1, [Define this if you have Heimdal Kerberos libraries])
+         KRBDIR="$dir"
+         gssapi_lib=gssapi
+        break
+      fi
+    fi
+  done
+  dnl We didn't find a usable Kerberos environment
+  if test "x$KRBDIR" = "x"; then
+    if test "x$krb5_with" = "x"; then
+      AC_MSG_ERROR(Kerberos v5 with GSS support not found: consider --disable-gss or --with-krb5=)
+    else
+      AC_MSG_ERROR(Kerberos v5 with GSS support not found at $krb5_with)
+    fi
+  fi
+  AC_MSG_RESULT($KRBDIR)
+
+  dnl Now check for functions within gssapi library
+  AC_CHECK_LIB($gssapi_lib, gss_krb5_export_lucid_sec_context,
+    AC_DEFINE(HAVE_LUCID_CONTEXT_SUPPORT, 1, [Define this if the Kerberos GSS library supports gss_krb5_export_lucid_sec_context]), ,$KRBLIBS)
+  AC_CHECK_LIB($gssapi_lib, gss_krb5_set_allowable_enctypes,
+    AC_DEFINE(HAVE_SET_ALLOWABLE_ENCTYPES, 1, [Define this if the Kerberos GSS library supports gss_krb5_set_allowable_enctypes]), ,$KRBLIBS)
+  AC_CHECK_LIB($gssapi_lib, gss_krb5_ccache_name,
+    AC_DEFINE(HAVE_GSS_KRB5_CCACHE_NAME, 1, [Define this if the Kerberos GSS library supports gss_krb5_ccache_name]), ,$KRBLIBS)
+
+  dnl If they specified a directory and it didn't work, give them a warning
+  if test "x$krb5_with" != "x" -a "$krb5_with" != "$KRBDIR"; then
+    AC_MSG_WARN(Using $KRBDIR instead of requested value of $krb5_with for Kerberos!)
+  fi
+
+  AC_SUBST([KRBDIR])
+  AC_SUBST([KRBLIBS])
+  AC_SUBST([KRBCFLAGS])
+  AC_SUBST([K5VERS])
+
+])