diff -Naur speex-1.2rc1/configure.ac speex-1.2rc1.patch/configure.ac
--- speex-1.2rc1/configure.ac	2008-07-21 04:17:08.000000000 +0200
+++ speex-1.2rc1.patch/configure.ac	2013-02-01 16:50:06.747570221 +0100
@@ -2,7 +2,7 @@
 
 AC_INIT(libspeex/speex.c)
 
-AM_CONFIG_HEADER([config.h])
+AC_CONFIG_HEADERS([config.h])
 
 SPEEX_MAJOR_VERSION=1
 SPEEX_MINOR_VERSION=1
