Makefile: Update rules to be able to includ them by Simulink

We don't have to define any rules, because this rule will become default
goal and we don't want this.

diff --git a/build/Makefile.rules.arm b/build/Makefile.rules.arm
index cb4d9dd44baa09c976729356412ec0a390d53ee2..794f717b09f5557fffc32380b9f4d4000eb9233a 100644 (file)
--- a/build/Makefile.rules.arm
+++ b/build/Makefile.rules.arm
@@ -77,5 +77,8 @@ RPP_LDFLAGS = \
 
 RPP_LDLIBS = $(makefile_rules_arm_dir)/$(TARGET)/$(TARGET_LDCMD) -l$(RPP_LIB_DIR)/rpp-lib.lib $(TARGET_LDLIBS)
 
+# Do not define any rules when compiling Simulink models
+ifeq ($(MATLAB_ROOT),)
 $(RPP_LIB_DIR)/rpp-lib.lib:
        $(MAKE) -C $(dir $@)
+endif