gcoap: make stack size configurable

sys/include/net/gcoap.h

@@ -386,6 +386,13 @@ extern "C" {
 #define GCOAP_OBS_INIT_UNUSED   (-2)
 /** @} */
 
+/**
+ * @brief Stack size for module thread
+ */
+#ifndef GCOAP_STACK_SIZE
+#define GCOAP_STACK_SIZE (THREAD_STACKSIZE_DEFAULT + DEBUG_EXTRA_STACKSIZE)
+#endif
+
 /**
  * @brief   A modular collection of resources for a server
  */

sys/net/application_layer/coap/gcoap.c

@@ -26,9 +26,6 @@
 #define ENABLE_DEBUG (0)
 #include "debug.h"
 
-/** @brief Stack size for module thread */
-#define GCOAP_STACK_SIZE (THREAD_STACKSIZE_DEFAULT + DEBUG_EXTRA_STACKSIZE)
-
 /* Internal functions */
 static void *_event_loop(void *arg);
 static void _listen(sock_udp_t *sock);