--- a/src/jdk.hotspot.agent/linux/native/libsaproc/ps_proc.c	Tue Feb 13 11:54:44 2018 +0100
+++ b/src/jdk.hotspot.agent/linux/native/libsaproc/ps_proc.c	Tue Feb 13 12:39:56 2018 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -32,6 +32,7 @@
 #include <sys/wait.h>
 #include <sys/ptrace.h>
 #include <sys/uio.h>
+#include "jni.h"
 #include "libproc_impl.h"
 
 #if defined(x86_64) && !defined(amd64)
@@ -373,7 +374,8 @@
 };
 
 // attach to the process. One and only one exposed stuff
-struct ps_prochandle* Pgrab(pid_t pid, char* err_buf, size_t err_buf_len) {
+JNIEXPORT struct ps_prochandle*
+Pgrab(pid_t pid, char* err_buf, size_t err_buf_len) {
   struct ps_prochandle* ph = NULL;
   thread_info* thr = NULL;