autoconf: Use AS_HELP_STRING macro instead of AC_HELP_STRING

Avoid the warning: The macro `AC_HELP_STRING' is obsolete.

diff --git a/configure.ac b/configure.ac
index 6406b8f9d3c679876b45a0a9d82341b65f95af20..679707177e9b8ea6b7b1d3d99b245c1b2094ff8c 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -49,7 +49,7 @@ case "$host_os" in
 
 darwin*)
        AC_ARG_ENABLE(universal,
-       AC_HELP_STRING([--disable-universal],[don't build universal on macOS]))
+       AS_HELP_STRING([--disable-universal],[don't build universal on macOS]))
        if test "$enable_universal" != "no"; then
                case "$host_os" in