3rdparty: Add additional build facilities for 3rd-party code
diff --git a/tests/Makefile b/tests/Makefile
index 00a14bc..4eb9142 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -10,7 +10,8 @@
 LOCAL_LDFLAGS = -L../library			\
 		-lmbedcrypto$(SHARED_SUFFIX)
 
-LOCAL_CFLAGS+=-I../3rdparty/everest/include
+include ../3rdparty/Makefile.inc
+LOCAL_CFLAGS+=$(THIRDPARTY_INCLUDES)
 
 # Enable definition of various functions used throughout the testsuite
 # (gethostname, strdup, fileno...) even when compiling with -std=c99. Harmless