fix make distcheck cleanup for extras

diff --git a/extra/Makefile.am b/extra/Makefile.am
index c26f4312ba14a3095548fc7f1cd6de914f2dec98..c3b4f516a54f3b1deed515404a2be09b0d0a3bf2 100644 (file)
--- a/extra/Makefile.am
+++ b/extra/Makefile.am
@@ -9,3 +9,13 @@ SUBDIRS = \
 src
 
 AM_CXXFLAGS = @AM_CXXFLAGS@
+
+DISTCLEANFILES = \
+compile \
+config.guess \
+config.sub \
+depcomp \
+install-sh \
+ltmain.sh \
+missing
+