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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: directory
# 2: directory dependency
# 3: tempfile for file listings
# 4: find options
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 "*\\\#*"
define rdep
$(foreach file,$(shell find $(1) $(DEP_FINDPARAMS) $(4)),
$(2): $(file)
$(file): ;
)
ifneq ($(3),)
ifneq ($$(shell find $(1) $(DEP_FINDPARAMS) $(4) 2>/dev/null | md5s),$(if $(3),$(shell cat $(3) || touch $(3) 2>/dev/null)))
$(2): $(3)
endif
endif
$(3): FORCE
@-find $(1) $(DEP_FINDPARAMS) $(4) 2>/dev/null | md5s > $$@
.PRECIOUS: $(3)
endef
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