1diff --git a/rules.mk b/rules.mk 2index 28e6a41..893dbc6 100644 3--- a/rules.mk 4+++ b/rules.mk 5@@ -10,6 +10,12 @@ MODULE_SRCS := \ 6 MODULE_RUST_EDITION := 2018 7 MODULE_RUSTFLAGS += \ 8 --cfg 'feature="default"' \ 9+ 10+ifeq ($(call TOBOOL,$(TRUSTY_USERSPACE)),true) 11+ 12+MODULE_RUSTFLAGS += \ 13 --cfg 'feature="std"' \ 14 15+endif 16+ 17 include make/library.mk 18