fixup! tests/libc_newlib: add test for newlib-nano inclusion

tests/libc_newlib/Makefile

@@ -5,5 +5,33 @@ USEMODULE += embunit
 
 include $(RIOTBASE)/Makefile.include
 
+# Compile time tests
+.PHONY: compile-test test-newlib-nano
+all: compile-test
+
+ifneq (,$(filter newlib,$(USEMODULE)))
+  COMPILE_TESTS += test-newlib
+  ifneq (,$(filter newlib_nano,$(USEMODULE)))
+    CMP_OP = =
+  else
+    CMP_OP = !=
+  endif
+endif
+
+test-newlib: $(ELFFILE)
+	$(Q)\
+	PRINTF_ADDR=$$($(NM) $^ | sed -n '/ printf$$/ s/ .*//p');\
+	IPRINTF_ADDR=$$($(NM) $^ | sed -n '/ iprintf$$/ s/ .*//p');\
+	echo "Test: comparing addresses of 'printf' and 'iprintf' symbols";\
+	if test "$${PRINTF_ADDR}" $(CMP_OP) "$${IPRINTF_ADDR}" ; then \
+	  echo "[SUCCESS] '$${PRINTF_ADDR}' $(CMP_OP) '$${IPRINTF_ADDR}' is True"; \
+	else \
+	  echo "[FAILED] '$${PRINTF_ADDR}' $(CMP_OP) '$${IPRINTF_ADDR}' is False"; \
+	  exit 1; \
+	fi
+
+compile-test: $(COMPILE_TESTS)
+
+
 test:
 	tests/01-run.py