[build] Drop timestamps from .a file
Make the contents of $(BLIB) deterministic to allow it to be
subsequently used for calculating a build ID.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
diff --git a/src/Makefile.housekeeping b/src/Makefile.housekeeping
index cac6efc..1155a0e 100644
--- a/src/Makefile.housekeeping
+++ b/src/Makefile.housekeeping
@@ -1156,8 +1156,8 @@
$(BLIB) : $(BLIB_OBJS) $(BLIB_LIST) $(MAKEDEPS)
$(Q)$(RM) $(BLIB)
$(QM)$(ECHO) " [AR] $@"
- $(Q)$(AR) r $@ $(sort $(BLIB_OBJS))
- $(Q)$(RANLIB) $@
+ $(Q)$(AR) rD $@ $(sort $(BLIB_OBJS))
+ $(Q)$(RANLIB) -D $@
blib : $(BLIB)
# Command to generate build ID. Must be unique for each $(BIN)/%.tmp,
