From b729965a3c4258862bc075facb0291c0c765cd57 Mon Sep 17 00:00:00 2001
From: "jan.nijtmans" <nijtmans@users.sourceforge.net>
Date: Tue, 22 May 2018 20:10:21 +0000
Subject: Fix build with TCL_THREADS=0 on Linux/other without epoll or kqueu
 support. In that case, fallback to select notifier

---
 unix/tclEpollNotfy.c  |  2 +-
 unix/tclKqueueNotfy.c |  2 +-
 unix/tclSelectNotfy.c |  2 +-
 unix/tclUnixNotfy.c   | 21 ++++++++++-----------
 4 files changed, 13 insertions(+), 14 deletions(-)

diff --git a/unix/tclEpollNotfy.c b/unix/tclEpollNotfy.c
index 076e02b..3059643 100644
--- a/unix/tclEpollNotfy.c
+++ b/unix/tclEpollNotfy.c
@@ -12,7 +12,7 @@
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
-#ifdef NOTIFIER_EPOLL
+#if defined(NOTIFIER_EPOLL) && (!defined(TCL_THREADS) || TCL_THREADS)
 
 #define _GNU_SOURCE		/* For pipe2(2) */
 #include "tclInt.h"
diff --git a/unix/tclKqueueNotfy.c b/unix/tclKqueueNotfy.c
index 049829e..3fddeea 100644
--- a/unix/tclKqueueNotfy.c
+++ b/unix/tclKqueueNotfy.c
@@ -13,7 +13,7 @@
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
-#ifdef NOTIFIER_KQUEUE
+#if defined(NOTIFIER_KQUEUE) && (!defined(TCL_THREADS) || TCL_THREADS)
 
 #include "tclInt.h"
 #ifndef HAVE_COREFOUNDATION	/* Darwin/Mac OS X CoreFoundation notifier is
diff --git a/unix/tclSelectNotfy.c b/unix/tclSelectNotfy.c
index 4bdfaef..3172d6a 100644
--- a/unix/tclSelectNotfy.c
+++ b/unix/tclSelectNotfy.c
@@ -11,7 +11,7 @@
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
-#if !defined(NOTIFIER_EPOLL) && !defined(NOTIFIER_KQUEUE)
+#if (!defined(NOTIFIER_EPOLL) && !defined(NOTIFIER_KQUEUE)) || (defined(TCL_THREADS) && !TCL_THREADS)
 
 #include "tclInt.h"
 #ifndef HAVE_COREFOUNDATION	/* Darwin/Mac OS X CoreFoundation notifier is
diff --git a/unix/tclUnixNotfy.c b/unix/tclUnixNotfy.c
index ccae39b..6572b39 100644
--- a/unix/tclUnixNotfy.c
+++ b/unix/tclUnixNotfy.c
@@ -17,24 +17,24 @@
  * Static routines defined in this file.
  */
 
-#ifdef NOTIFIER_SELECT
-#if !defined(TCL_THREADS) || TCL_THREADS
+static int	FileHandlerEventProc(Tcl_Event *evPtr, int flags);
+#if defined(TCL_THREADS) && !TCL_THREADS
+# undef NOTIFIER_EPOLL
+# undef NOTIFIER_KQUEUE
+# define NOTIFIER_SELECT
+#elif !defined(NOTIFIER_EPOLL) && !defined(NOTIFIER_KQUEUE)
+# define NOTIFIER_SELECT
 static TCL_NORETURN void NotifierThreadProc(ClientData clientData);
-#if defined(HAVE_PTHREAD_ATFORK)
+# if defined(HAVE_PTHREAD_ATFORK)
 static void	AtForkChild(void);
-#endif /* HAVE_PTHREAD_ATFORK */
-#endif /* TCL_THREADS */
-#endif /* NOTIFIER_SELECT */
-static int	FileHandlerEventProc(Tcl_Event *evPtr, int flags);
+# endif /* HAVE_PTHREAD_ATFORK */
 
-#ifdef NOTIFIER_SELECT
-#if !defined(TCL_THREADS) || TCL_THREADS
 /*
  *----------------------------------------------------------------------
  *
  * StartNotifierThread --
  *
- *	Start a notfier thread and wait for the notifier pipe to be created.
+ *	Start a notifier thread and wait for the notifier pipe to be created.
  *
  * Results:
  *	None.
@@ -70,7 +70,6 @@ StartNotifierThread(const char *proc)
 	pthread_mutex_unlock(&notifierInitMutex);
     }
 }
-#endif /* TCL_THREADS */
 #endif /* NOTIFIER_SELECT */
 
 /*
-- 
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