diff --git a/autoconf_share/lofar_blitz.m4 b/autoconf_share/lofar_blitz.m4
new file mode 100644
index 0000000000000000000000000000000000000000..9433a337191aeb33d26b7d3110412c6d1c82eeeb
--- /dev/null
+++ b/autoconf_share/lofar_blitz.m4
@@ -0,0 +1,92 @@
+#  lofar_blitz.m4
+#
+#  Copyright (C) 2002
+#  ASTRON (Netherlands Foundation for Research in Astronomy)
+#  P.O.Box 2, 7990 AA Dwingeloo, The Netherlands, seg@astron.nl
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software
+#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+#  $Id$
+
+
+# lofar_BLITZ
+#
+# Macro to check for BLITZ installation
+#
+# lofar_BLITZ([DEFAULT-PREFIX])
+#
+# e.g. lofar_BLITZ(["/usr/local/blitz"])
+# -------------------------
+#
+AC_DEFUN(lofar_BLITZ,dnl
+[dnl
+AC_PREREQ(2.13)dnl
+ifelse($1, [], define(DEFAULT_BLITZ_PREFIX,[/usr/local/blitz]), define(DEFAULT_BLITZ_PREFIX,$1))
+AC_ARG_WITH(blitz,
+	[  --with-blitz[=PFX]     prefix where Blitz is installed (default=]DEFAULT_BLITZ_PREFIX[)],
+	[with_blitz=$withval],
+	[with_blitz="no"])
+[
+if test "$with_blitz" = "no"; then
+  enable_blitz=no
+else
+  if test "$with_blitz" = "yes"; then
+    blitz_prefix=]DEFAULT_BLITZ_PREFIX
+[
+  else
+    blitz_prefix=$withval
+  fi
+  enable_blitz=yes
+]
+##
+## Check in normal location and suggested location
+##
+AC_CHECK_FILE([$blitz_prefix/blitz/array.h],
+			[lofar_cv_header_blitz=yes],
+			[lofar_cv_header_blitz=no])dnl
+[
+  if test $lofar_cv_header_blitz = yes ; then
+
+    BLITZ_PATH="$blitz_prefix"
+
+    BLITZ_CPPFLAGS="-I$BLITZ_PATH"
+    BLITZ_CXXFLAGS=
+    if test "$lofar_compiler" = "gnu"; then
+      BLITZ_CXXFLAGS="-Wno-unused -ftemplate-depth-30"
+    fi
+    BLITZ_LDFLAGS="-L$BLITZ_PATH/lib"
+    BLITZ_LIBS="-lblitz -lm"
+
+    CPPFLAGS="$CPPFLAGS $BLITZ_CPPFLAGS"
+    CXXFLAGS="$CXXFLAGS $BLITZ_CXXFLAGS"
+    LDFLAGS="$LDFLAGS $BLITZ_LDFLAGS"
+    LIBS="$LIBS $BLITZ_LIBS"
+]
+dnl
+AC_SUBST(CPPFLAGS)dnl
+AC_SUBST(CXXFLAGS)dnl
+AC_SUBST(LDFLAGS)dnl
+AC_SUBST(LIBS)dnl
+dnl
+AC_DEFINE(HAVE_BLITZ, 1, [Define if Blitz is installed])dnl
+[
+  else]
+AC_MSG_ERROR([Could not find Blitz in $blitz_prefix])
+[
+    enable_blitz=no
+  fi
+fi]
+AM_CONDITIONAL(HAVE_BLITZ, [test "$enable_blitz" = "yes"])
+])