diff --git a/configure.ac b/configure.ac
new file mode 100644
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,156 @@
+dnl Process this file with autoconf to produce a configure script.
+
+dnl Version information.
+m4_define([lemon_version_major], [0])
+m4_define([lemon_version_minor], [6])
+m4_define([lemon_version_micro], [90])
+m4_define([lemon_version_nano], [])
+m4_define([lemon_version_tag], [hg])
+m4_define([lemon_hg_revision], [m4_normalize(esyscmd([hg tip |grep ^changeset |cut -d ':' -f 3]))])
+m4_define([lemon_version], [lemon_version_major().lemon_version_minor()ifelse(lemon_version_micro(), [], [], [.lemon_version_micro()])ifelse(lemon_version_nano(), [], [], [.lemon_version_nano()])ifelse(lemon_version_tag(), [], [], lemon_version_tag(), [hg], [[_]lemon_version_tag()[]lemon_hg_revision()], [[_]lemon_version_tag()])])
+
+AC_PREREQ([2.59])
+AC_INIT([LEMON], [lemon_version()], [etik-ol@cs.elte.hu], [lemon])
+AC_CONFIG_AUX_DIR([build-aux])
+AC_CONFIG_MACRO_DIR([m4])
+AM_INIT_AUTOMAKE([-Wall -Werror foreign subdir-objects])
+AC_CONFIG_SRCDIR([lemon/list_graph.h])
+AC_CONFIG_HEADERS([config.h lemon/config.h])
+
+lx_cmdline_cxxflags_set=${CXXFLAGS+set}
+
+dnl Checks for programs.
+AC_PROG_CXX
+AC_PROG_CXXCPP
+AC_PROG_INSTALL
+AC_DISABLE_SHARED
+AC_PROG_LIBTOOL
+
+if test x"$lx_cmdline_cxxflags_set" != x"set" -a "$GXX" = yes; then
+  CXXFLAGS="$CXXFLAGS -Wall -W -Wall -W -Wunused -Wformat=2 -Wctor-dtor-privacy -Wnon-virtual-dtor -Wno-char-subscripts -Wwrite-strings -Wno-char-subscripts -Wreturn-type -Wcast-qual -Wcast-align -Wsign-promo -Woverloaded-virtual -Woverloaded-virtual -ansi -fno-strict-aliasing -Wold-style-cast -Wno-unknown-pragmas"
+fi
+
+AC_CHECK_PROG([doxygen_found],[doxygen],[yes],[no])
+
+dnl Checks for libraries.
+LX_CHECK_GLPK
+LX_CHECK_CPLEX
+LX_CHECK_SOPLEX
+
+dnl Enable/disable installing the documentation
+AC_ARG_ENABLE([doc],
+AS_HELP_STRING([--enable-doc@<:@=yes|no|full@:>@], [build the documentation (full enables internal documentation too) @<:@default=yes@:>@])
+AS_HELP_STRING([--disable-doc], [do not build the documentation]),
+              [], [enable_doc=yes])
+
+AC_MSG_CHECKING([whether to build the documention])
+case "$enable_doc" in
+  yes)
+    DOXYGEN_INTERNAL_DOCS=NO
+    AC_MSG_RESULT([yes])
+    ;;
+  full)
+    DOXYGEN_INTERNAL_DOCS=YES
+    AC_MSG_RESULT([full])
+    ;;
+  no)
+    DOXYGEN_INTERNAL_DOCS=NO
+    AC_MSG_RESULT([no])
+    ;;
+  *)
+    AC_MSG_ERROR([bad value $enable_doc for option --enable-doc])
+    ;;
+esac
+AC_SUBST(DOXYGEN_INTERNAL_DOCS)
+AM_CONDITIONAL([WANT_DOC], [test x"$enable_doc" != x"no"])
+
+dnl Disable/enable building the demo programs
+AC_ARG_ENABLE([demo],
+AS_HELP_STRING([--enable-demo], [build the demo programs])
+AS_HELP_STRING([--disable-demo], [do not build the demo programs @<:@default@:>@]),
+              [], [enable_demo=no])
+AC_MSG_CHECKING([whether to build the demo programs])
+if test x"$enable_demo" != x"no"; then
+  AC_MSG_RESULT([yes])
+else
+  AC_MSG_RESULT([no])
+fi
+AM_CONDITIONAL([WANT_DEMO], [test x"$enable_demo" != x"no"])
+
+dnl Disable/enable building the binary tools
+AC_ARG_ENABLE([tools],
+AS_HELP_STRING([--enable-tools], [build additional tools @<:@default@:>@])
+AS_HELP_STRING([--disable-tools], [do not build additional tools]),
+              [], [enable_tools=yes])
+AC_MSG_CHECKING([whether to build the additional tools])
+if test x"$enable_tools" != x"no"; then
+  AC_MSG_RESULT([yes])
+else
+  AC_MSG_RESULT([no])
+fi
+AM_CONDITIONAL([WANT_TOOLS], [test x"$enable_tools" != x"no"])
+
+dnl Disable/enable building the benchmarks
+AC_ARG_ENABLE([benchmark],
+AS_HELP_STRING([--enable-benchmark], [build the benchmarks])
+AS_HELP_STRING([--disable-benchmark], [do not build the benchmarks @<:@default@:>@]),
+              [], [enable_benchmark=no])
+AC_MSG_CHECKING([whether to build the benchmarks])
+if test x"$enable_benchmark" != x"no"; then
+  AC_MSG_RESULT([yes])
+else
+  AC_MSG_RESULT([no])
+fi
+AM_CONDITIONAL([WANT_BENCHMARK], [test x"$enable_benchmark" != x"no"])
+
+dnl Checks for header files.
+AC_CHECK_HEADERS(limits.h sys/time.h sys/times.h unistd.h)
+
+dnl Checks for typedefs, structures, and compiler characteristics.
+AC_C_CONST
+AC_C_INLINE
+AC_TYPE_SIZE_T
+AC_HEADER_TIME
+AC_STRUCT_TM
+
+dnl Checks for library functions.
+AC_HEADER_STDC
+AC_CHECK_FUNCS(gettimeofday times ctime_r)
+
+AC_CONFIG_FILES([
+Makefile
+doc/Doxyfile
+lemon/lemon.pc
+])
+
+AC_OUTPUT
+
+echo
+echo '****************************** SUMMARY ******************************'
+echo
+echo Package version............... : $PACKAGE-$VERSION
+echo
+echo C++ compiler.................. : $CXX
+echo C++ compiles flags............ : $CXXFLAGS
+echo
+echo GLPK support.................. : $lx_glpk_found
+echo CPLEX support................. : $lx_cplex_found
+echo SOPLEX support................ : $lx_soplex_found
+echo
+echo build benchmarks.............. : $enable_benchmark
+echo build demo programs........... : $enable_demo
+echo build additional tools........ : $enable_tools
+echo
+echo The packace will be installed in
+echo -n '  '
+echo $prefix.
+echo
+echo The documentation will be installed in
+echo -n '  '
+eval echo ${datadir}/doc/$PACKAGE.
+echo
+echo '*********************************************************************'
+
+echo
+echo configure complete, now type \'make\' and then \'make install\'.
+echo