48 lines
1.2 KiB
Makefile
48 lines
1.2 KiB
Makefile
#
|
|
# Copyright (C) 2007 OpenWrt.org
|
|
#
|
|
# This is free software, licensed under the GNU General Public License v2.
|
|
# See /LICENSE for more information.
|
|
#
|
|
# define a dependency on a subtree
|
|
# parameters:
|
|
# 1: directories/files
|
|
# 2: directory dependency
|
|
# 3: tempfile for file listings
|
|
# 4: find options
|
|
|
|
DEP_FINDPARAMS := -x "*.svn*" -x ".*" -x "*.svn*" -x "*:*" -x "*\!*" -x "* *" -x "*\\\#*" -x "*/.*_check"
|
|
|
|
find_md5=find $(1) -type f $(patsubst -x,-and -not -path,$(DEP_FINDPARAMS) $(2)) | md5s
|
|
|
|
define rdep
|
|
.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
|
|
|
|
endef
|
|
|