config: replace deprecated AM_CONFIG_HEADER with AC_CONFIG_HEADERS

This silences an Autoconf warning

diff --git a/configure.ac b/configure.ac
index 4f7b9f3..4f3c1d7 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -35,7 +35,7 @@ m4_ifndef([XORG_MACROS_VERSION],
 XORG_MACROS_VERSION(1.8)
 XORG_DEFAULT_OPTIONS
 
-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS([config.h])
 
 AC_CHECK_FUNCS([strncasecmp])