diff --git a/acinclude.m4 b/acinclude.m4
index be7f8f602..c8e41be44 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -196,14 +196,22 @@ dnl automake <= 1.6 needs this specifications
 AC_SUBST(CONFIGDIR)
 AC_SUBST(DATADIR)
 AC_SUBST(FONTDIR)
+AC_SUBST(FONTDIR_VAR)
 AC_SUBST(GAMESDIR)
 AC_SUBST(LIBDIR)
 AC_SUBST(MNTDIR)
 AC_SUBST(PLUGINDIR)
+AC_SUBST(PLUGINDIR_VAR)
+AC_SUBST(WEBTVDIR)
+AC_SUBST(WEBTVDIR_VAR)
+AC_SUBST(PLUGINDIR_MNT)
 AC_SUBST(LUAPLUGINDIR)
 AC_SUBST(LOCALEDIR)
+AC_SUBST(LOCALEDIR_VAR)
 AC_SUBST(THEMESDIR)
+AC_SUBST(THEMESDIR_VAR)
 AC_SUBST(ICONSDIR)
+AC_SUBST(ICONSDIR_VAR)
 AC_SUBST(PRIVATE_HTTPDDIR)
 AC_SUBST(PUBLIC_HTTPDDIR)
 AC_SUBST(HOSTED_HTTPDDIR)