Add SPDX identifiers for REUSE compliance

Co-authored-by: Mat Sutcliffe <oktal3700@gmail.com>

mkspecs/features/common_post.prf

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (C) swift Project Community / Contributors
+# SPDX-License-Identifier: CC0-1.0
+
 ################################
 # Unix rpath
 ################################

mkspecs/features/common_pre.prf

@@ -1,11 +1,5 @@
-# Copyright (C) 2015
-# swift project Community / Contributors
-#
-# This file is part of swift project. It is subject to the license terms in
-# the LICENSE file found in the top-level directory of this distribution and
-# at http://www.swift-project.org/license.html. No part of swift project,
-# including this file, may be copied, modified, propagated, or distributed
-# except according to the terms contained in the LICENSE file.
+# SPDX-FileCopyrightText: Copyright (C) 2015 swift Project Community / Contributors
+# SPDX-License-Identifier: CC0-1.0
 
 ################################
 # Destination tree

mkspecs/features/config.pri

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (C) swift Project Community / Contributors
+# SPDX-License-Identifier: CC0-1.0
+
 # Make sure _QMAKE_CACHE_ is initialized (otherwise config.log goes to the root directory)
 cache()
 

mkspecs/features/config_test_pre.prf

@@ -1,2 +1,5 @@
+# SPDX-FileCopyrightText: Copyright (C) swift Project Community / Contributors
+# SPDX-License-Identifier: CC0-1.0
+
 include(wordsize.pri)
 include(externals.pri)

mkspecs/features/copyfiles.pri

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (C) swift Project Community / Contributors
+# SPDX-License-Identifier: CC0-1.0
+
 copy_files.name = COPY
 copy_files.input = COPY_FILES
 copy_files.CONFIG = no_link

mkspecs/features/externals.pri

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (C) swift Project Community / Contributors
+# SPDX-License-Identifier: CC0-1.0
+
 ################################
 # Path to external dependencies
 ################################

mkspecs/features/libraries.pri

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (C) swift Project Community / Contributors
+# SPDX-License-Identifier: CC0-1.0
+
 LIBS *= -L$$DestRoot/lib
 
 unix:!macx {

mkspecs/features/templight.pri

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (C) swift Project Community / Contributors
+# SPDX-License-Identifier: CC0-1.0
+
 swiftConfig(templight) {
     CXXFLAGS_NO_TEMPLIGHT = $$QMAKE_CXXFLAGS
     QMAKE_CXXFLAGS += -Xtemplight -profiler -Xtemplight -ignore-system

mkspecs/features/templight_blacklist

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (C) swift Project Community / Contributors
+# SPDX-License-Identifier: CC0-1.0
+
 #
 # Identifiers matching the regular expressions below
 # will be omitted from templight traces.

mkspecs/features/touch.prf

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (C) swift Project Community / Contributors
+# SPDX-License-Identifier: CC0-1.0
+
 win32:isEmpty(MINGW_IN_SHELL) {
     TOUCH = copy /y nul >nul
 }

mkspecs/features/version.pri

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (C) swift Project Community / Contributors
+# SPDX-License-Identifier: CC0-1.0
+
 win32: GIT_BIN = $$system($$(SYSTEMROOT)\system32\where git 2> nul)
 else: GIT_BIN = $$system(which git 2> /dev/null)
 

mkspecs/features/warnings.pri

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (C) swift Project Community / Contributors
+# SPDX-License-Identifier: CC0-1.0
+
 msvc:DEFINES *= _SCL_SECURE_NO_WARNINGS
 
 # swift standard warnings

mkspecs/features/wordsize.pri

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (C) swift Project Community / Contributors
+# SPDX-License-Identifier: CC0-1.0
+
 msvc {
     contains(QMAKE_TARGET.arch, x86_64) {
         WORD_SIZE = 64