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#
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# Copyright (C) 2007 OpenWrt.org
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#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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#
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# define a dependency on a subtree
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# parameters:
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# 1: directory
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# 2: directory dependency
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# 3: tempfile for file listings
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# 4: find options
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DEP_FINDPARAMS := -type f -not -name ".*" -and -not -path "*.svn*" -type f -not -name ".*" -and -not -path "*.svn*" -and -not -path "*:*" -and -not -path "*!*" -and -not -path "* *" -and -not -path "*\\\#*"
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define rdep
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$(foreach file,$(shell find $(1) $(DEP_FINDPARAMS) $(4)),
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$(2): $(file)
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$(file): ;
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)
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ifneq ($(3),)
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ifneq ($$(shell find $(1) $(DEP_FINDPARAMS) $(4) 2>/dev/null | md5s),$(if $(3),$(shell cat $(3) || touch $(3) 2>/dev/null)))
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$(2): $(3)
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endif
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endif
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$(3): FORCE
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@-find $(1) $(DEP_FINDPARAMS) $(4) 2>/dev/null | md5s > $$@
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.PRECIOUS: $(3)
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endef
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