Tag
$(CONFIG_HEADER): stamp-h
stamp-h: $(CONFIG_HEADER).in config.status
CONFIG_FILES= CONFIG_HEADERS=$(CONFIG_HEADER) ./config.status
$(srcdir)/$(CONFIG_HEADER).in: stamp-h.in
$(srcdir)/stamp-h.in: configure.in $(ACLOCAL) $(ACCONFIG) $(CONFIG_TOP) $(CONFIG_BOT)
cd $(srcdir) && autoheader
echo timestamp > $(srcdir)/stamp-h.in