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 | |