From 8931019e6be6e584538ae38978ff68d5b53c96fe Mon Sep 17 00:00:00 2001
From: Shiji Yang <yangshiji66@outlook.com>
Date: Wed, 4 Jun 2025 19:53:39 +0800
Subject: [PATCH] thread: add the missing pthread.h header

Fix build error on macos:

In file included from mksquashfs_help.c:35:
./thread.h:46:39: error: unknown type name 'pthread_mutex_t'; did you mean 'pthread_attr_t'?
   46 | extern void wait_thread_idle(int tid, pthread_mutex_t *mutex);
      |                                       ^~~~~~~~~~~~~~~
      |                                       pthread_attr_t

Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
---
 squashfs-tools/thread.h | 1 +
 1 file changed, 1 insertion(+)

--- a/squashfs-tools/thread.h
+++ b/squashfs-tools/thread.h
@@ -22,6 +22,7 @@
  *
  * thread.h
  */
+#include <pthread.h>
 
 #define TRUE 1
 #define FALSE 0