diff --git a/config/pac.m4 b/config/pac.m4
index 5dc4e0c5..0fd295f2 100644
--- a/config/pac.m4
+++ b/config/pac.m4
@@ -1792,6 +1792,9 @@ AC_DEFUN(PAC_CHECK_METIS,
 Default: "-lmetis"]),
         [psblas_cv_metis=$withval],
         [psblas_cv_metis='-lmetis'])
+AC_ARG_WITH(metisincfile, AC_HELP_STRING([--with-metisincfile=DIR], [Specify the name  for METIS include file.]),
+        [psblas_cv_metisincfile=$withval],
+        [psblas_cv_metisincfile='metis.h'])
 AC_ARG_WITH(metisdir, AC_HELP_STRING([--with-metisdir=DIR], [Specify the directory for METIS library and includes.]),
         [psblas_cv_metisdir=$withval],
         [psblas_cv_metisdir=''])
@@ -1821,7 +1824,7 @@ if test "x$psblas_cv_metislibdir" != "x"; then
 fi
 
 AC_MSG_NOTICE([metis dir $psblas_cv_metisdir])
-AC_CHECK_HEADERS([limits.h metis.h],
+AC_CHECK_HEADERS([limits.h $psblas_cv_metisincfile],
  [pac_metis_header_ok=yes],
  [pac_metis_header_ok=no; METIS_INCLUDES=""])
 if test "x$pac_metis_header_ok" == "xno" ; then
@@ -1831,7 +1834,7 @@ dnl Maybe Include or include subdirs?
   CPPFLAGS="$METIS_INCLUDES $SAVE_CPPFLAGS"
 
  AC_MSG_CHECKING([for metis_h in $METIS_INCLUDES])
- AC_CHECK_HEADERS([limits.h metis.h],
+ AC_CHECK_HEADERS([limits.h  $psblas_cv_metisincfile],
     [pac_metis_header_ok=yes],
     [pac_metis_header_ok=no; METIS_INCLUDES=""])
 fi
@@ -1840,11 +1843,27 @@ dnl Maybe new structure with METIS UFconfig METIS?
    unset ac_cv_header_metis_h
    METIS_INCLUDES="-I$psblas_cv_metisdir/UFconfig -I$psblas_cv_metisdir/METIS/Include -I$psblas_cv_metisdir/METIS/Include"
    CPPFLAGS="$METIS_INCLUDES $SAVE_CPPFLAGS"
-   AC_CHECK_HEADERS([limits.h metis.h],
+   AC_CHECK_HEADERS([limits.h  $psblas_cv_metisincfile],
      [pac_metis_header_ok=yes],
      [pac_metis_header_ok=no; METIS_INCLUDES=""])
 fi
 
+if test "x$pac_metis_header_ok" == "xyes" ; then
+   AC_LANG_PUSH([C])
+   AC_MSG_CHECKING([for METIS idx size])
+   AC_LINK_IFELSE([AC_LANG_SOURCE(
+	#include <$psblas_cv_metisincfile>
+	#include <stdio.h>
+        void main(){
+		    printf("%d\n",IDXTYPEWIDTH);
+		    }
+	       )],
+	       [pac_cv_metis_idx=`./conftest${ac_exeext} | sed 's/^ *//'`],
+	       [pac_cv_metis_idx="unknown"])
+      AC_MSG_RESULT($pac_cv_metis_idx)
+
+   AC_LANG_POP()
+fi
 
 if test "x$pac_metis_header_ok" == "xyes" ; then 
       psblas_cv_metis_includes="$METIS_INCLUDES"
diff --git a/configure b/configure
index 0ab9494a..ea270b0d 100755
--- a/configure
+++ b/configure
@@ -775,6 +775,7 @@ with_blasdir
 with_lapack
 with_rsb
 with_metis
+with_metisincfile
 with_metisdir
 with_metisincdir
 with_metislibdir
@@ -1454,6 +1455,7 @@ Optional Packages:
                           configure script invoke librsb-config)
   --with-metis=LIBNAME    Specify the library name for METIS library. Default:
                           "-lmetis"
+  --with-metisincfile=DIR Specify the name for METIS include file.
   --with-metisdir=DIR     Specify the directory for METIS library and
                           includes.
   --with-metisincdir=DIR  Specify the directory for METIS includes.
@@ -8857,6 +8859,14 @@ else
 fi
 
 
+# Check whether --with-metisincfile was given.
+if test "${with_metisincfile+set}" = set; then :
+  withval=$with_metisincfile; psblas_cv_metisincfile=$withval
+else
+  psblas_cv_metisincfile='metis.h'
+fi
+
+
 # Check whether --with-metisdir was given.
 if test "${with_metisdir+set}" = set; then :
   withval=$with_metisdir; psblas_cv_metisdir=$withval
@@ -8906,7 +8916,7 @@ fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: metis dir $psblas_cv_metisdir" >&5
 $as_echo "$as_me: metis dir $psblas_cv_metisdir" >&6;}
-for ac_header in limits.h metis.h
+for ac_header in limits.h $psblas_cv_metisincfile
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
@@ -8928,7 +8938,7 @@ if test "x$pac_metis_header_ok" == "xno" ; then
 
  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for metis_h in $METIS_INCLUDES" >&5
 $as_echo_n "checking for metis_h in $METIS_INCLUDES... " >&6; }
- for ac_header in limits.h metis.h
+ for ac_header in limits.h  $psblas_cv_metisincfile
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
@@ -8948,7 +8958,7 @@ if test "x$pac_metis_header_ok" == "xno" ; then
    unset ac_cv_header_metis_h
    METIS_INCLUDES="-I$psblas_cv_metisdir/UFconfig -I$psblas_cv_metisdir/METIS/Include -I$psblas_cv_metisdir/METIS/Include"
    CPPFLAGS="$METIS_INCLUDES $SAVE_CPPFLAGS"
-   for ac_header in limits.h metis.h
+   for ac_header in limits.h  $psblas_cv_metisincfile
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
@@ -8965,6 +8975,41 @@ done
 
 fi
 
+if test "x$pac_metis_header_ok" == "xyes" ; then
+   ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for METIS idx size" >&5
+$as_echo_n "checking for METIS idx size... " >&6; }
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <$psblas_cv_metisincfile>
+	#include <stdio.h>
+        void main(){
+		    printf("%d\n",IDXTYPEWIDTH);
+		    }
+
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  pac_cv_metis_idx=`./conftest${ac_exeext} | sed 's/^ *//'`
+else
+  pac_cv_metis_idx="unknown"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: $pac_cv_metis_idx" >&5
+$as_echo "$pac_cv_metis_idx" >&6; }
+
+   ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+fi
 
 if test "x$pac_metis_header_ok" == "xyes" ; then
       psblas_cv_metis_includes="$METIS_INCLUDES"
@@ -9319,11 +9364,6 @@ fi
 
 
 
-# Note  : We would like to detect PSBLAS, but this is complicated by the
-#         module symbols mangling rules, which are compiler specific !
-#
-#	  Moreover, the PSBLAS doesn't have an installer, currently.
-
 ###############################################################################
 #		Library target directory and archive files.
 ###############################################################################
diff --git a/configure.ac b/configure.ac
index 59fcab0b..304abf99 100755
--- a/configure.ac
+++ b/configure.ac
@@ -702,11 +702,6 @@ fi
 
 
 
-# Note  : We would like to detect PSBLAS, but this is complicated by the
-#         module symbols mangling rules, which are compiler specific !
-#
-#	  Moreover, the PSBLAS doesn't have an installer, currently.
-
 ###############################################################################
 #		Library target directory and archive files.
 ###############################################################################