-$(STAGING_DIR_HOST)/bin/md5sum: $(STAGING_DIR)/.prepared
- @MD5SUM=`which md5sum 2>/dev/null`; \
- if [ "$@" != "$$MD5SUM" ]; then \
- if [ -x "$$MD5SUM" ]; then \
- ln -sf "$$MD5SUM" "$@"; \
- else \
- cp $(SCRIPT_DIR)/md5sum $(STAGING_DIR_HOST)/bin/; \
- fi; \
- fi
+define PrepareCommand
+$(STAGING_DIR_HOST)/bin/$(1): $(STAGING_DIR)/.prepared
+ @mkdir -p "$$(dir $$@)"; rm -f "$$@"
+ @export FILE="$$$$(which $(2) 2>/dev/null | grep -v 'not found' | head -n1)"; [ -n "$$$$FILE" ] || { \
+ echo "Command $(1) not found."; false; \
+ }; ln -s "$$$$FILE" "$$@"