Enable subdir-objects Automake option

It has been supported since at least 1.10, and its absence is
deprecated since 1.14.

Bug: https://bugs.freedesktop.org/show_bug.cgi?id=88808
Reviewed-by: Philip Withnall

diff --git a/configure.ac b/configure.ac
index aab78c6514bf567e05c1cf943b373ea758908ac4..5e6f5559dcb53998ba147f2359681e4758dc4fd1 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -13,7 +13,7 @@ AC_CANONICAL_HOST
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])
 
-AM_INIT_AUTOMAKE([1.10 tar-ustar -Wno-portability])
+AM_INIT_AUTOMAKE([1.10 tar-ustar -Wno-portability subdir-objects])
 
 GETTEXT_PACKAGE=dbus-1
 AC_SUBST(GETTEXT_PACKAGE)