X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/5c30e741059c2e2fe0c0ee747dd01a2f91569b87..22a6beb304aeb2cce935c238c2d51b3fac451e85:/include/depends.mk

diff --git a/include/depends.mk b/include/depends.mk
index 1e01d35f8..65e9b25d5 100644
--- a/include/depends.mk
+++ b/include/depends.mk
@@ -6,24 +6,42 @@
 #
 # define a dependency on a subtree
 # parameters:
-#	1: directory
+#	1: directories/files
 #	2: directory dependency
 #	3: tempfile for file listings
 #	4: find options
 
-DEP_FINDPARAMS := -type f -not -name ".*" -and -not -path "*.svn*" 
+DEP_FINDPARAMS := -x "*/.svn*" -x ".*" -x "*:*" -x "*\!*" -x "* *" -x "*\\\#*" -x "*/.*_check"
+
+find_md5=find $(1) -type f $(patsubst -x,-and -not -path,$(DEP_FINDPARAMS) $(2)) | md5s
+
 define rdep
-  $(foreach file,$(shell find $(1) $(DEP_FINDPARAMS) -and -not -path "*:*" $(4)),
-    $(2): $(file)
-    $(file): ;
-  )
+  .PRECIOUS: $(2)
+  .SILENT: $(2)_check
+
+  $(2): $(2)_check
+  $(2)_check::
+	if [ -f "$(2)" ]; then \
+		$(if $(3), \
+			$(call find_md5,$(1),$(4)) > $(3).1; \
+			{ [ \! -f "$(3)" ] || diff $(3) $(3).1 >/dev/null; } && \
+		) \
+		{ \
+			[ -f "$(2)_check.1" ] && mv "$(2)_check.1"; \
+		    $(TOPDIR)/scripts/timestamp.pl $(DEP_FINDPARAMS) $(4) -n $(2) $(1) && { \
+				$(call debug_eval,$(SUBDIR),r,echo "No need to rebuild $(2)";) \
+				touch -r "$(2)" "$(2)_check"; \
+			} \
+		} || { \
+			$(call debug_eval,$(SUBDIR),r,echo "Need to rebuild $(2)";) \
+			touch "$(2)_check"; \
+		}; \
+		$(if $(3), mv $(3).1 $(3);) \
+	else \
+		$(if $(3), rm -f $(3) $(3).1;) \
+		$(call debug_eval,$(SUBDIR),r,echo "Target $(2) not built";) \
+		true; \
+	fi
 
-  ifneq ($(3),)
-    ifneq ($$(shell find $(1) $(DEP_FINDPARAMS) $(4) 2>/dev/null | md5s),$(if $(3),$(shell cat $(3) 2>/dev/null)))
-      $(2): $(3)
-    endif
-  
-    $(3): FORCE
-	  @-find $(1) $(DEP_FINDPARAMS) $(4) 2>/dev/null | md5s > $$@
-  endif
 endef
+