CONFIG_STATUS ?= config.status
CONFIGURE_ACS += $(CONFIGURE_AC)
+CONFIGURE_ACS += subdirmk/subdirmk.ac
$(top_srcdir)/$(CONFIGURE): $(addprefix $(top_srcdir)/,$(CONFIGURE_ACS))
- cd &^ && autoconf
+ cd $(top_srcdir) && autoconf
$(CONFIG_STATUS): $(top_srcdir)/$(CONFIGURE)
./$(CONFIG_STATUS) --recheck
MAKEFILES += subdirmk/regen.mk
-main.mk $(MAKFILES): makefiles.phantom
-.INTERMEDIATE: makefiles.phantom
-makefiles.phantom: \
+MAKEFILE_TEMPLATES += $(top_srcdir)/Perdir.mk.in
+
+main.mk $(MAKEFILES): .makefiles.stamp ;
+.makefiles.stamp: \
$(top_srcdir)/subdirmk/generate \
$(CONFIG_STATUS) \
- $(top_srcdir)/Perdir.mk.in \
+ $(MAKEFILE_TEMPLATES) \
$(foreach m,$(MAKEFILES),$(top_srcdir)/$(m).in)
- ./$(CONFIG_STATUS)
+# This filtering arranges that we can often run config.status to
+# generate only particular output files. We look for *inputs* that
+# have changed. If the only inputs that have changed are ones that we
+# know affect only one output (Subdir.mk.in and regen.mk.in), we pass
+# config.status the corresponding output file names. Otherwise we
+# pass nothing and config.status does them all. We need to mention
+# regen.mk.in twice because if $(top_srcdir) is `.', make elides the
+# directory part from $?.
+ ./$(CONFIG_STATUS) $(if \
+ $(filter-out Subdir.mk.in %/Subdir.mk.in \
+ subdirmk/regen.mk.in \
+ $(top_srcdir)/subdirmk/regen.mk.in \
+ , $?),, \
+ $(sort $(patsubst %.mk.in,%.mk,$(filter %.mk.in,$?))))
+ touch $@
+
+realclean:: clean
+ $(RM) config.status config.log
+ $(RM) main.mk subdirmk/regen.mk $(MAKEFILES)
+ $(RM) $(addsuffix Makefile,$(dir $(MAKEFILES)))
+
+-include $(ALL_DEPFILES)