Replace only actually changed archive members.

diff --git a/src/Makefile b/src/Makefile
index ead1387e8cb50895c715fae6f9b423f6cace1cb6..735ddb6d60e2abd72818c6e394685376b970441e 100644 (file)
--- a/src/Makefile
+++ b/src/Makefile
@@ -93,7 +93,7 @@ endef
 
 $(eval $(call OBJS_template,common))
 ../wrk/common/common.a: $(common_OBJS)
-       $(AR) r $@ $^
+       $(AR) r $@ $?
 
 $(foreach prog,$(PROGS),$(eval $(call PROG_template,$(prog))))