--- /dev/null
+diff -urN fftw-3.1.2.org/configure.ac fftw-3.1.2/configure.ac
+--- fftw-3.1.2.org/configure.ac 2006-07-04 02:42:46.000000000 +0200
++++ fftw-3.1.2/configure.ac 2006-11-26 19:23:15.566663500 +0100
+@@ -135,7 +135,7 @@
+ AC_PROG_CC
+ AX_COMPILER_VENDOR
+ AC_PROG_CC_STDC
+-AMX_PROG_AS dnl AM_PROG_AS breaks at least one version of libtool
++AM_PROG_AS
+ AC_PROG_INSTALL
+ AC_PROG_LN_S
+ AC_PROG_MAKE_SET