[5266] Added spec_config.h.pre to distclean

src/lib/process/Makefile.am

@@ -35,6 +35,9 @@ EXTRA_DIST = process_messages.mes libprocess.dox
 # Get rid of generated message files on a clean
 CLEANFILES = *.gcno *.gcda spec_config.h process_messages.h process_messages.cc s-messages
 
+# Generated by configure files
+DISTCLEANFILES = spec_config.h.pre
+
 lib_LTLIBRARIES = libkea-process.la
 libkea_process_la_SOURCES  = d_cfg_mgr.cc d_cfg_mgr.h
 libkea_process_la_SOURCES += d_controller.cc d_controller.h