This ensures that re-running "configure" with different settings causes
version.c to be rebuilt.
Thanks to Ivy Foster <ivy.foster@gmail.com> for reporting the problem.
nodist_src_libpspp_libpspp_a_SOURCES = src/libpspp/version.c
-src/libpspp/version.c: $(top_srcdir)/AUTHORS
+src/libpspp/version.c: $(top_srcdir)/AUTHORS Makefile
@$(MKDIR_P) src/libpspp
echo "/* -*- mode: c; buffer-read-only: t -*-" > $@
echo " Generated by src/libpspp/automake.mk --- Do not edit. */">> $@