=== modified file 'autogen.sh'
--- autogen.sh	2010-09-27 07:26:55 +0000
+++ autogen.sh	2012-12-29 23:02:19 +0000
@@ -86,7 +86,13 @@
 
 echo -n "checking for automake >= $AUTOMAKE_REQUIRED_VERSION ... "
 # Prefer earlier versions just so that the earliest supported version gets test coverage by developers.
-if (automake-1.11 --version) < /dev/null > /dev/null 2>&1; then
+if (automake-1.13 --version) < /dev/null > /dev/null 2>&1; then
+   AUTOMAKE=automake-1.13
+   ACLOCAL=aclocal-1.13
+elif (automake-1.12 --version) < /dev/null > /dev/null 2>&1; then
+   AUTOMAKE=automake-1.12
+   ACLOCAL=aclocal-1.12
+elif (automake-1.11 --version) < /dev/null > /dev/null 2>&1; then
    AUTOMAKE=automake-1.11
    ACLOCAL=aclocal-1.11
 elif (automake-1.10 --version) < /dev/null > /dev/null 2>&1; then

=== modified file 'configure.ac'
--- configure.ac	2012-12-16 18:11:41 +0000
+++ configure.ac	2012-12-29 23:07:55 +0000
@@ -21,12 +21,12 @@
   export CC CXX
 ])
 
-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS(config.h)
 
 AC_LANG(C++)
 AC_ISC_POSIX
 AC_PROG_CXX
-AM_PROG_CC_STDC
+AC_PROG_CC
 AM_PROG_AS
 AC_PROG_RANLIB
 AC_PROG_INTLTOOL(0.22)