In Automake 1.13, the long-deprecated macro AM_CONFIG_HEADER (deprecated
since 2002) has been removed in favour of AC_CONFIG_HEADERS.
https://bugzilla.gnome.org/show_bug.cgi?id=692095
AC_CONFIG_MACRO_DIR([build/m4])
AM_INIT_AUTOMAKE([1.11 tar-ustar foreign -Wno-portability])
AM_SANITY_CHECK
-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS(config.h)
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
AM_MAINTAINER_MODE([enable])