| 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 | |
| 14 | DEP_FINDPARAMS := -x "*/.svn*" -x ".*" -x "*:*" -x "*\!*" -x "* *" -x "*\\\#*" -x "*/.*_check" |
| 15 | |
| 16 | find_md5=find $(1) -type f $(patsubst -x,-and -not -path,$(DEP_FINDPARAMS) $(2)) | md5s |
| 17 | |
| 18 | define rdep |
| 19 | .PRECIOUS: $(2) |
| 20 | .SILENT: $(2)_check |
| 21 | |
| 22 | $(2): $(2)_check |
| 23 | $(2)_check:: |
| 24 | if [ -f "$(2)" ]; then \ |
| 25 | $(if $(3), \ |
| 26 | $(call find_md5,$(1),$(4)) > $(3).1; \ |
| 27 | { [ \! -f "$(3)" ] || diff $(3) $(3).1 >/dev/null; } && \ |
| 28 | ) \ |
| 29 | { \ |
| 30 | [ -f "$(2)_check.1" ] && mv "$(2)_check.1"; \ |
| 31 | $(TOPDIR)/scripts/timestamp.pl $(DEP_FINDPARAMS) $(4) -n $(2) $(1) && { \ |
| 32 | $(call debug_eval,$(SUBDIR),r,echo "No need to rebuild $(2)";) \ |
| 33 | touch -r "$(2)" "$(2)_check"; \ |
| 34 | } \ |
| 35 | } || { \ |
| 36 | $(call debug_eval,$(SUBDIR),r,echo "Need to rebuild $(2)";) \ |
| 37 | touch "$(2)_check"; \ |
| 38 | }; \ |
| 39 | $(if $(3), mv $(3).1 $(3);) \ |
| 40 | else \ |
| 41 | $(if $(3), rm -f $(3) $(3).1;) \ |
| 42 | $(call debug_eval,$(SUBDIR),r,echo "Target $(2) not built";) \ |
| 43 | true; \ |
| 44 | fi |
| 45 | |
| 46 | endef |
| 47 | |
| 48 | |
