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- #
- # Copyright (C) 2007 OpenWrt.org
- #
- # This is free software, licensed under the GNU General Public License v2.
- # See /LICENSE for more information.
- #
- # define a dependency on a subtree
- # parameters:
- # 1: directories/files
- # 2: directory dependency
- # 3: tempfile for file listings
- # 4: find options
- DEP_FINDPARAMS := -x "*/.svn*" -x ".*" -x "*:*" -x "*\!*" -x "* *" -x "*\\\#*" -x "*/.*_check" -x "*/.*.swp"
- find_md5=find $(wildcard $(1)) -type f $(patsubst -x,-and -not -path,$(DEP_FINDPARAMS) $(2)) | mkhash md5
- define rdep
- .PRECIOUS: $(2)
- .SILENT: $(2)_check
- $(2): $(2)_check
- ifneq ($(wildcard $(2)),)
- $(2)_check::
- $(if $(3), \
- $(call find_md5,$(1),$(4)) > $(3).1; \
- { [ \! -f "$(3)" ] || diff $(3) $(3).1 >/dev/null; } && \
- ) \
- { \
- [ -f "$(2)_check.1" ] && mv "$(2)_check.1"; \
- $(TOPDIR)/scripts/timestamp.pl $(DEP_FINDPARAMS) $(4) -n $(2) $(1) && { \
- $(call debug_eval,$(SUBDIR),r,echo "No need to rebuild $(2)";) \
- touch -r "$(2)" "$(2)_check"; \
- } \
- } || { \
- $(call debug_eval,$(SUBDIR),r,echo "Need to rebuild $(2)";) \
- touch "$(2)_check"; \
- }
- $(if $(3), mv $(3).1 $(3))
- else
- $(2)_check::
- $(if $(3), rm -f $(3) $(3).1)
- $(call debug_eval,$(SUBDIR),r,echo "Target $(2) not built")
- endif
- endef
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