Add Autotools setup.

Makefile.am

@@ -2,6 +2,8 @@
 
 #SUBDIRS = test
 
+ACLOCAL_AMFLAGS = -I m4
+
 preprocessdir = $(includedir)/dune/grid/preprocess
 
 preprocess_HEADERS = facetopology.h preprocess.h sparsetable.h \
@@ -13,5 +15,4 @@ libpreprocess_la_SOURCES = facetopology.c  uniquepoints.c \
 			   preprocess.c sparsetable.c
 
 
-include $(top_srcdir)/am/global-rules
-
+## include $(top_srcdir)/am/global-rules

configure.ac

@@ -0,0 +1,31 @@
+#                                               -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.65])
+AC_INIT([FULL-PACKAGE-NAME], [VERSION], [BUG-REPORT-ADDRESS])
+AC_CONFIG_SRCDIR([mxgrdecl.c])
+AC_CONFIG_MACRO_DIR([m4])
+AC_CONFIG_HEADERS([config.h])
+
+AM_INIT_AUTOMAKE([foreign])
+
+LT_INIT
+
+# Checks for programs.
+AC_PROG_CXX
+AC_PROG_CC
+AC_PROG_LIBTOOL
+
+# Checks for libraries.
+
+# Checks for header files.
+AC_CHECK_HEADERS([float.h limits.h stdlib.h string.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+
+# Checks for library functions.
+AC_FUNC_MALLOC
+AC_FUNC_REALLOC
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT