mk: optimize directory dependencies

[dpdk.git] / mk / rte.subdir.mk

diff --git a/mk/rte.subdir.mk b/mk/rte.subdir.mk
index 5341f1f..92f5de4 100644 (file)
--- a/mk/rte.subdir.mk
+++ b/mk/rte.subdir.mk
@@ -37,6 +37,8 @@ include $(RTE_SDK)/mk/internal/rte.install-pre.mk
 include $(RTE_SDK)/mk/internal/rte.clean-pre.mk
 include $(RTE_SDK)/mk/internal/rte.build-pre.mk
 
+ALL_DEPDIRS := $(patsubst DEPDIRS-%,%,$(filter DEPDIRS-%,$(.VARIABLES)))
+
 CLEANDIRS = $(addsuffix _clean,$(DIRS-y) $(DIRS-n) $(DIRS-))
 
 VPATH += $(SRCDIR)
@@ -60,7 +62,8 @@ build: _postbuild
 $(DIRS-y):
        @[ -d $(CURDIR)/$@ ] || mkdir -p $(CURDIR)/$@
        @echo "== Build $S/$@"
-       @$(MAKE) S=$S/$@ -f $(SRCDIR)/$@/Makefile -C $(CURDIR)/$@ all
+       @$(MAKE) S=$S/$@ -f $(SRCDIR)/$@/Makefile -C $(CURDIR)/$@ \
+               DEPDIRS="$(DEPDIRS-$@)" all
 
 .PHONY: clean
 clean: _postclean
@@ -72,34 +75,16 @@ clean: _postclean
        fi
        @rm -f $(_BUILD_TARGETS) $(_INSTALL_TARGETS) $(_CLEAN_TARGETS)
 
-#
-# include .depdirs and define rules to order priorities between build
-# of directories.
-#
--include $(RTE_OUTPUT)/.depdirs
-
 define depdirs_rule
-$(1): $(sort $(patsubst $(S)/%,%,$(LOCAL_DEPDIRS-$(S)/$(1))))
-endef
-
-$(foreach d,$(DIRS-y),$(eval $(call depdirs_rule,$(d))))
+$(DEPDIRS-$(1)):
 
-DEPDIRS = $(wildcard $(addprefix $(S)/,$(DIRS-y)))
+$(1): | $(DEPDIRS-$(1))
 
-.PHONY: depdirs $(DEPDIRS)
-depdirs: $(DEPDIRS)
-
-$(DEPDIRS):
-       @$(MAKE) S=$@ -f $(RTE_SRCDIR)/$@/Makefile depdirs
+$(if $(D),$(info $(1) depends on $(DEPDIRS-$(1))))
+endef
 
-.PHONY: depgraph
-depgraph:
-       @for d in $(DIRS-y); do \
-               echo "    \"$(S)\" -> \"$(S)/$$d\"" ; \
-               if [ -f $(SRCDIR)/$$d/Makefile ]; then \
-                       $(MAKE) S=$S/$$d -f $(SRCDIR)/$$d/Makefile depgraph ; \
-               fi ; \
-       done
+$(foreach dir,$(ALL_DEPDIRS),\
+       $(eval $(call depdirs_rule,$(dir))))
 
 include $(RTE_SDK)/mk/internal/rte.install-post.mk
 include $(RTE_SDK)/mk/internal/rte.clean-post.mk