Added the XML code developped at W3C, Daniel.
diff --git a/configure.in b/configure.in
new file mode 100644
index 0000000..55af1e2
--- /dev/null
+++ b/configure.in
@@ -0,0 +1,35 @@
+dnl Process this file with autoconf to produce a configure script.
+AC_PREREQ(2.2)
+AC_INIT(xml_entities.h)
+AM_CONFIG_HEADER(config.h)
+AM_INIT_AUTOMAKE(libxml, 0.10)
+
+dnl Checks for programs.
+AC_PROG_CC
+AC_PROG_INSTALL
+AC_PATH_PROG(RM, rm, /bin/rm)
+AC_PATH_PROG(MV, mv, /bin/mv)
+AC_PATH_PROG(TAR, tar, /bin/tar)
+AC_PATH_PROG(GZIP, gzip, /bin/gzip)
+
+AM_PROG_LIBTOOL
+
+AM_MAINTAINER_MODE
+
+dnl Checks for libraries.
+Z_LIBS=
+AC_CHECK_LIB(z, inflate,
+ AC_CHECK_HEADER(zlib.h,
+ Z_LIBS="-lz"; AC_DEFINE(HAVE_LIBZ)))
+
+dnl Checks for header files.
+AC_HEADER_DIRENT
+AC_HEADER_STDC
+AC_CHECK_HEADERS(fcntl.h unistd.h ctype.h dirent.h errno.h malloc.h)
+AC_CHECK_HEADERS(stdarg.h sys/stat.h sys/types.h time.h zlib.h)
+
+dnl Checks for library functions.
+AC_FUNC_STRFTIME
+AC_CHECK_FUNCS(strdup strndup strerror snprintf )
+AC_SUBST(Z_LIBS)
+AC_OUTPUT(Makefile)