Allow separate OpenSSL include/lib dirs
diff --git a/Makefile b/Makefile
index fec5c97..b05c72d 100644
--- a/Makefile
+++ b/Makefile
@@ -271,6 +271,12 @@
 	CFLAGS += -I ${OPENSSL_DIR}/include
 	LDFLAGS += -I ${OPENSSL_DIR}/lib
 endif
+ifdef OPENSSL_INC
+	CFLAGS += -I ${OPENSSL_INC}
+endif
+ifdef OPENSSL_LIB
+	LDFLAGS += -I ${OPENSSL_LIB}
+endif
 
 export BUILD_RUN