1 files changed, 15 insertions, 0 deletions
diff --git a/crypto/async/arch/async_null.c b/crypto/async/arch/async_null.c
index f4adda9788..05b4964eb2 100644
--- a/crypto/async/arch/async_null.c
+++ b/crypto/async/arch/async_null.c
@@ -91,5 +91,20 @@ int async_pool_can_grow(void) {
     return 0;
 }
 
+int async_pipe(int *pipefds)
+{
+    return -1;
+}
+
+int async_write1(int fd, const void *buf)
+{
+    return -1;
+}
+
+int async_read1(int fd, void *buf)
+{
+    return -1;
+}
+
 #endif