From e10b7c8cfecb69b5ff870470f1dd87c37c39c6f0 Mon Sep 17 00:00:00 2001
From: Jesper Louis Andersen <jesper.louis.andersen@gmail.com>
Date: Tue, 16 Dec 2014 15:12:52 +0100
Subject: [PATCH] Fail compilation if the Erlang/OTP system has no dirty
 scheduler support.

---
 c_src/enacl_nif.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/c_src/enacl_nif.c b/c_src/enacl_nif.c
index 5b63ffa..c3ae882 100644
--- a/c_src/enacl_nif.c
+++ b/c_src/enacl_nif.c
@@ -2,6 +2,10 @@
 
 #include <sodium.h>
 
+#ifndef ERL_NIF_DIRTY_SCHEDULER_SUPPORT
+# error Requires dirty schedulers
+#endif
+
 /* Errors */
 static
 ERL_NIF_TERM nacl_error_tuple(ErlNifEnv *env, char *error_atom) {