- $(top_srcdir)/Perdir.mk.in \
- $(foreach m,$(MAKEFILES),$(top_srcdir)/$(m).in)
- : $?
- set -e; printf >$@.tmp "#!/bin/sh\nset -e\n%s %s" \
- "./$(CONFIG_STATUS)" \
- "$(if $(filter-out %.mk.in, $?),, \
- $(patsubst %.mk.in,%.mk,$?))" ; \
- chmod +x $@.tmp; mv -f $@.tmp $@
+ $(MAKEFILE_TEMPLATES)
+# 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 (Dir.sd.mk, Final.sd.mk and *.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 Dir.sd.mk twice because if $(top_srcdir) is `.', make
+# elides the directory part from $?. Similarly but not identically
+# Final.sd.mk.
+ $(SUBDIRMK_REGEN_NDEBUG): REGEN STAMP WANTS DEPS=$?
+ ./$(CONFIG_STATUS) $(if \
+ $(filter-out Dir.sd.mk %/Dir.sd.mk \
+ Final.sd.mk $(top_srcdir)/Final.sd.mk \
+ %.mk.in \
+ , $?),, \
+ $(patsubst $(top_srcdir)/%,%, $(sort \
+ $(patsubst %.sd.mk,%.mk,$(filter %.sd.mk,$?)) \
+ $(patsubst %.mk.in,%.mk,$(filter %.mk.in,$?)))))
+ touch $@