diff -urN ARPACK.orig/configure.in ARPACK.patch/configure.in
--- ARPACK.orig/configure.in	1970-01-01 01:00:00.000000000 +0100
+++ ARPACK.patch/configure.in	2004-12-16 12:04:25.922290400 +0100
@@ -0,0 +1,22 @@
+dnl Process this file with autoconf to produce a configure script.
+AC_INIT([arpack], [2.1.0])
+AM_INIT_AUTOMAKE
+AM_CONFIG_HEADER([config.h])
+
+dnl Checks for programs.
+AC_ISC_POSIX
+AC_PROG_CC
+AC_PROG_F77
+AM_PROG_LIBTOOL
+
+AC_ARG_WITH(acml, 
+  [AS_HELP_STRING([--with-acml], [use ACML version of BLAS instead of NETLIB implementation])],
+  with_acml=$withval, with_acml=no)
+
+if test "$with_acml" = yes; then
+  LIBS="-lacml $LIBS"
+else
+  LIBS="-llapack $LIBS"
+fi
+
+AC_OUTPUT([Makefile SRC/Makefile])
diff -urN ARPACK.orig/Makefile.am ARPACK.patch/Makefile.am
--- ARPACK.orig/Makefile.am	1970-01-01 01:00:00.000000000 +0100
+++ ARPACK.patch/Makefile.am	2004-12-16 12:04:25.947286600 +0100
@@ -0,0 +1 @@
+SUBDIRS=SRC
diff -urN ARPACK.orig/SRC/Makefile.am ARPACK.patch/SRC/Makefile.am
--- ARPACK.orig/SRC/Makefile.am	1970-01-01 01:00:00.000000000 +0100
+++ ARPACK.patch/SRC/Makefile.am	2004-12-16 12:08:47.655500904 +0100
@@ -0,0 +1,18 @@
+lib_LTLIBRARIES = libarpack.la
+libarpack_la_LDFLAGS = -version-info $(subst .,:,@VERSION@)
+libarpack_la_SOURCES= \
+       cgetv0.f cnaitr.f cnapps.f cnaup2.f cnaupd.f cneigh.f cneupd.f\
+       cngets.f csortc.f cstatn.f debug.h dgetv0.f dlaqrb.f dnaitr.f\
+       dnapps.f dnaup2.f dnaupd.f dnaupe.f dnconv.f dneigh.f dneupd.f\
+       dngets.f dsaitr.f dsapps.f dsaup2.f dsaupd.f dsconv.f dseigt.f\
+       dsesrt.f dseupd.f dsgets.f dsortc.f dsortr.f dstatn.f dstats.f\
+       dstqrb.f sgetv0.f slaqrb.f snaitr.f snapps.f snaup2.f snaupd.f\
+       snaupe.f snconv.f sneigh.f sneupd.f sngets.f ssaitr.f ssapps.f\
+       ssaup2.f ssaupd.f ssconv.f sseigt.f ssesrt.f sseupd.f ssgets.f\
+       ssortc.f ssortr.f sstatn.f sstats.f sstqrb.f stat.h version.h\
+       zgetv0.f znaitr.f znapps.f znaup2.f znaupd.f zneigh.f zneupd.f\
+       zngets.f zsortc.f zstatn.f\
+       ../UTIL/cmout.f ../UTIL/cvout.f ../UTIL/dmout.f ../UTIL/dvout.f\
+       ../UTIL/icnteq.f ../UTIL/icopy.f ../UTIL/iset.f ../UTIL/iswap.f\
+       ../UTIL/ivout.f ../UTIL/arscnd.f ../UTIL/smout.f ../UTIL/svout.f\
+       ../UTIL/zmout.f ../UTIL/zvout.f