1# 2# Copyright (C) 2007 OpenWrt.org 3# 4# This is free software, licensed under the GNU General Public License v2. 5# See /LICENSE for more information. 6# 7# define a dependency on a subtree 8# parameters: 9# 1: directories/files 10# 2: directory dependency 11# 3: tempfile for file listings 12# 4: find options 13 14DEP_FINDPARAMS := -x "*/.svn*" -x ".*" -x "*:*" -x "*\!*" -x "* *" -x "*\\\#*" -x "*/.*_check" -x "*/.*.swp" 15 16find_md5=$(SH_FUNC) find $(1) -type f $(patsubst -x,-and -not -path,$(DEP_FINDPARAMS) $(2)) | md5s 17 18define rdep 19 .PRECIOUS: $(2) 20 .SILENT: $(2)_check 21 22 $(2): $(2)_check 23 24ifneq ($(wildcard $(2)),) 25 $(2)_check:: 26 $(if $(3), \ 27 $(call find_md5,$(1),$(4)) > $(3).1; \ 28 { [ \! -f "$(3)" ] || diff $(3) $(3).1 >/dev/null; } && \ 29 ) \ 30 { \ 31 [ -f "$(2)_check.1" ] && mv "$(2)_check.1"; \ 32 $(TOPDIR)/scripts/timestamp.pl $(DEP_FINDPARAMS) $(4) -n $(2) $(1) && { \ 33 $(call debug_eval,$(SUBDIR),r,echo "No need to rebuild $(2)";) \ 34 touch -r "$(2)" "$(2)_check"; \ 35 } \ 36 } || { \ 37 $(call debug_eval,$(SUBDIR),r,echo "Need to rebuild $(2)";) \ 38 touch "$(2)_check"; \ 39 } 40 $(if $(3), mv $(3).1 $(3)) 41else 42 $(2)_check:: 43 $(if $(3), rm -f $(3) $(3).1) 44 $(call debug_eval,$(SUBDIR),r,echo "Target $(2) not built") 45endif 46 47endef 48 49