Merge "Fix inverted grep so that we can view any new warnings/errors."
diff --git a/driver/runtime/build_bc_lib_internal.mk b/driver/runtime/build_bc_lib_internal.mk
index aeb10f6..aaca138 100644
--- a/driver/runtime/build_bc_lib_internal.mk
+++ b/driver/runtime/build_bc_lib_internal.mk
@@ -103,7 +103,9 @@
 $(LOCAL_BUILT_MODULE): $(RS_LLVM_AS) $(BCC_STRIP_ATTR)
 	@echo "bc lib: $(PRIVATE_MODULE) ($@)"
 	@mkdir -p $(dir $@)
-	$(hide) $(RELATIVE_PWD) $(RS_LLVM_LINK) $(PRIVATE_BC_FILES) -o [email protected] 2> >(grep -o -v "modules of different" >&2)
+	# Strip useless known warning about combining mismatched modules, as well as
+	# any blank lines that llvm-link inserts.
+	$(hide) $(RELATIVE_PWD) $(RS_LLVM_LINK) $(PRIVATE_BC_FILES) -o [email protected] 2> >(grep -v "\(modules of different\)\|^$$" >&2)
 	$(hide) $(RELATIVE_PWD) $(BCC_STRIP_ATTR) -o $@ [email protected]
 
 BCC_RS_TRIPLE :=