X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/ce03b0650991e557e25fbd0cb1b2c6d3802671e2..ae774d3615d6a2c66871accfd3b07ca8459ef7c7:/include/depends.mk

diff --git a/include/depends.mk b/include/depends.mk
index 07345a399..14cdcdf7a 100644
--- a/include/depends.mk
+++ b/include/depends.mk
@@ -6,23 +6,43 @@
 #
 # define a dependency on a subtree
 # parameters:
-#	1: directory
+#	1: directories/files
 #	2: directory dependency
 #	3: tempfile for file listings
 #	4: find options
 
-FINDPARAMS := -type f -not -name ".*" -and -not -path "*.svn*" 
+DEP_FINDPARAMS := -x "*/.svn*" -x ".*" -x "*:*" -x "*\!*" -x "* *" -x "*\\\#*" -x "*/.*_check" -x "*/.*.swp"
+
+find_md5=$(SH_FUNC) find $(1) -type f $(patsubst -x,-and -not -path,$(DEP_FINDPARAMS) $(2)) | md5s
+
 define rdep
-  $(foreach file,$(shell find $(1) $(FINDPARAMS) -and -not -path "*:*" $(4)),
-    $(2): $(file)
-    $(file): ;
-  )
+  .PRECIOUS: $(2)
+  .SILENT: $(2)_check
 
-  ifneq ($(shell find $(1) $(FINDPARAMS) $(4) 2>/dev/null | md5s),$(shell cat $(3) 2>/dev/null))
-    $(2): $(3)
-  endif
-  
-  $(3): FORCE
-	@-find $(1) $(FINDPARAMS) $(4) 2>/dev/null | md5s > $$@
+  $(2): $(2)_check
+
+ifneq ($(wildcard $(2)),)
+  $(2)_check::
+	$(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
+  $(2)_check::
+	$(if $(3), rm -f $(3) $(3).1)
+	$(call debug_eval,$(SUBDIR),r,echo "Target $(2) not built")
+endif
 
 endef
+