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diff --git a/src/3rdparty/forkfd/forkfd_gcc.h b/src/3rdparty/forkfd/forkfd_gcc.h
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+++ b/src/3rdparty/forkfd/forkfd_gcc.h
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+/****************************************************************************
+**
+** Copyright (C) 2013 Intel Corporation
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef FFD_ATOMIC_GCC_H
+#define FFD_ATOMIC_GCC_H
+
+/* atomics */
+/* we'll use the GCC 4.7 atomic builtins
+ * See http://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html#_005f_005fatomic-Builtins
+ * Or in texinfo: C Extensions > __atomic Builtins
+ */
+typedef int ffd_atomic_int;
+#define ffd_atomic_pointer(type)    type*
+
+#define FFD_ATOMIC_INIT(val)    (val)
+
+#define FFD_ATOMIC_RELAXED  __ATOMIC_RELAXED
+#define FFD_ATOMIC_ACQUIRE  __ATOMIC_ACQUIRE
+#define FFD_ATOMIC_RELEASE  __ATOMIC_RELEASE
+// acq_rel & cst not necessary
+
+#if !defined(__GNUC__) || \
+    ((__GNUC__ - 0) * 100 + (__GNUC_MINOR__ - 0)) < 407 || \
+    (defined(__INTEL_COMPILER) && __INTEL_COMPILER-0 < 1310) || \
+    (defined(__clang__) && ((__clang_major__-0) * 100 + (__clang_minor-0)) < 303)
+#define ffd_atomic_load_n(ptr,order) *(ptr)
+#define ffd_atomic_store_n(ptr,val,order) (*(ptr) = (val), (void)0)
+#define ffd_atomic_exchange_n(ptr,val,order) __sync_lock_test_and_set(ptr, val)
+#define ffd_atomic_compare_exchange_n(ptr,expected,desired,weak,order1,order2) \
+    __sync_bool_compare_and_swap(ptr, *(expected), desired) ? 1 : \
+    (*(expected) = *(ptr), 0)
+#define ffd_atomic_add_fetch(ptr,val,order) __sync_add_and_fetch(ptr, val)
+#else
+#define ffd_atomic_load(ptr,order) __atomic_load_n(ptr, order)
+#define ffd_atomic_store(ptr,val,order) __atomic_store_n(ptr, val, order)
+#define ffd_atomic_exchange(ptr,val,order) __atomic_exchange_n(ptr, val, order)
+#define ffd_atomic_compare_exchange(ptr,expected,desired,order1,order2) \
+    __atomic_compare_exchange_n(ptr, expected, desired, 1, order1, order2)
+#define ffd_atomic_add_fetch(ptr,val,order) __atomic_add_fetch(ptr, val, order)
+#endif
+
+#endif