config: replace deprecated AM_CONFIG_HEADER with AC_CONFIG_HEADERS

This silences an Autoconf warning

diff --git a/configure.ac b/configure.ac
index fcea81baddf2652bdac88be076bad55f96f27182..915d55f7955d063bbd7bbc3fcf07ae8359ded0b4 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -12,7 +12,7 @@ m4_ifndef([XORG_MACROS_VERSION],
 XORG_MACROS_VERSION(1.8)
 XORG_DEFAULT_OPTIONS
 
 XORG_MACROS_VERSION(1.8)
 XORG_DEFAULT_OPTIONS
 

-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS([config.h])