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diff --git a/mesalib/include/c11/threads.h b/mesalib/include/c11/threads.h
new file mode 100644
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+++ b/mesalib/include/c11/threads.h
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+/*
+ * C11 <threads.h> emulation library
+ *
+ * (C) Copyright yohhoy 2012.
+ * Distributed under the Boost Software License, Version 1.0.
+ *
+ * Permission is hereby granted, free of charge, to any person or organization
+ * obtaining a copy of the software and accompanying documentation covered by
+ * this license (the "Software") to use, reproduce, display, distribute,
+ * execute, and transmit the Software, and to prepare [[derivative work]]s of the
+ * Software, and to permit third-parties to whom the Software is furnished to
+ * do so, all subject to the following:
+ *
+ * The copyright notices in the Software and this entire statement, including
+ * the above license grant, this restriction and the following disclaimer,
+ * must be included in all copies of the Software, in whole or in part, and
+ * all derivative works of the Software, unless such copies or derivative
+ * works are solely in the form of machine-executable object code generated by
+ * a source language processor.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+ * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+ * FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+#ifndef EMULATED_THREADS_H_INCLUDED_
+#define EMULATED_THREADS_H_INCLUDED_
+
+#include <time.h>
+
+#ifndef TIME_UTC
+#define TIME_UTC 1
+#endif
+
+#include "c99_compat.h" /* for `inline` */
+
+/*---------------------------- types ----------------------------*/
+typedef void (*tss_dtor_t)(void*);
+typedef int (*thrd_start_t)(void*);
+
+struct xtime {
+    time_t sec;
+    long nsec;
+};
+typedef struct xtime xtime;
+
+
+/*-------------------- enumeration constants --------------------*/
+enum {
+    mtx_plain     = 0,
+    mtx_try       = 1,
+    mtx_timed     = 2,
+    mtx_recursive = 4
+};
+
+enum {
+    thrd_success = 0, // succeeded
+    thrd_timeout,     // timeout
+    thrd_error,       // failed
+    thrd_busy,        // resource busy
+    thrd_nomem        // out of memory
+};
+
+/*-------------------------- functions --------------------------*/
+
+#if defined(_WIN32) && !defined(__CYGWIN__)
+#include "threads_win32.h"
+#elif defined(HAVE_PTHREAD)
+#include "threads_posix.h"
+#else
+#error Not supported on this platform.
+#endif
+
+
+
+#endif /* EMULATED_THREADS_H_INCLUDED_ */