config: replace deprecated AM_CONFIG_HEADER with AC_CONFIG_HEADERS

This silences an Autoconf warning

diff --git a/configure.ac b/configure.ac
index fb974e9..0e7dd3d 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -33,7 +33,7 @@ m4_ifndef([XORG_MACROS_VERSION],
           [m4_fatal([must install xorg-macros 1.8 or later before running autoconf/autogen])])
 XORG_MACROS_VERSION(1.8)
 
-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS([config.h])
 
 
 XORG_DEFAULT_OPTIONS