libltdl: don't trip subdir-objects warning from Automake >= 1.14.

Latest Automake releases now warn when subdir-objects is not
specified in preparation for Automake 2.0.  The option has been
in Automake for more than a decade, so there's minimal risk of
someone using the next release of Libtool alongside an ancient
release of Automake when bootstrapping libltdl client projects.
* libltdl/configure.ac (AM_INIT_AUTOMAKE): Add subdir-objects.

Signed-off-by: Gary V. Vaughan <gary@gnu.org>

diff --git a/libltdl/configure.ac b/libltdl/configure.ac
index 31baec7012025594bfa7fc145d65aa83d9247086..62bd576130f3b080b8f995cabc3cf976232d7094 100644 (file)
--- a/libltdl/configure.ac
+++ b/libltdl/configure.ac
@@ -52,7 +52,7 @@ LT_CONFIG_LTDL_DIR([.]) # I am me!
 ## Automake Initialisation. ##
 ## ------------------------ ##
 
-AM_INIT_AUTOMAKE([gnu])
+AM_INIT_AUTOMAKE([gnu subdir-objects])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])