Enable stack-protector-strong for QNX 7.0.0

This was originally enabled in the mkspecs for 64-bit QNX 7.0.0
but that broke when the qtConfig change was made.  It looks like
qtConfig shouldn't be used in the platform mkspecs.  I suspect
the stack-protector changes were left out of the 32-bit mkspecs
so that 6.6.0 builds wouldn't be affected.

Ignore the stack-protector/stack-protector-all possibility since
it isn't possible to access it without a command line option.
Specifying both options doesn't even make sense since
stack-protector-all encompasses stack-protector.

For now, leave out command line control of this feature.

Task-number: QTBUG-59644
Change-Id: I99323216be5b592dd2c3bef6d22da195764a6e65
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>

config.tests/unix/stack-protector/stack-protector.cpp

@@ -0,0 +1,52 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the config.tests of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#if defined(__QNXNTO__)
+#include <sys/neutrino.h>
+
+#if _NTO_VERSION < 700
+#error stack-protector not used (by default) before QNX 7.0.0.
+#endif
+
+#endif
+
+int main()
+{
+    return 0;
+}

config.tests/unix/stack-protector/stack-protector.pro

@@ -0,0 +1,2 @@
+SOURCES = stack-protector.cpp
+QMAKE_CXXFLAGS += -fstack-protector-strong

configure.json

@@ -425,8 +425,8 @@
         },
         "stack_protector": {
             "label": "stack protection",
-            "type": "compilerSupportsFlag",
-            "test": "-fstack-protector-strong"
+            "type": "compile",
+            "test": "unix/stack-protector"
         },
         "incredibuild_xge": {
             "label": "IncrediBuild",
@@ -930,7 +930,7 @@
         "stack-protector-strong": {
             "label": "stack protection",
             "condition": "config.qnx && tests.stack_protector",
-            "output": [ "publicQtConfig" ]
+            "output": [ "privateFeature" ]
         },
         "system-zlib": {
             "label": "Using system zlib",

mkspecs/common/qcc-base.conf

@@ -34,6 +34,8 @@ QMAKE_CFLAGS_SSE4_2    += -msse4.2
 QMAKE_CFLAGS_AVX       += -mavx
 QMAKE_CFLAGS_AVX2      += -mavx2
 
+QMAKE_CFLAGS_STACK_PROTECTOR_STRONG = -fstack-protector-strong
+
 QMAKE_CXXFLAGS         += $$QMAKE_CFLAGS -lang-c++
 QMAKE_CXXFLAGS_DEPS    += $$QMAKE_CFLAGS_DEPS
 QMAKE_CXXFLAGS_WARN_ON += $$QMAKE_CFLAGS_WARN_ON

mkspecs/features/default_post.prf

@@ -71,6 +71,11 @@ debug {
     QMAKE_LIBFLAGS += $$QMAKE_LIBFLAGS_RELEASE
 }
 
+stack_protector_strong {
+    QMAKE_CFLAGS += $$QMAKE_CFLAGS_STACK_PROTECTOR_STRONG
+    QMAKE_CXXFLAGS += $$QMAKE_CFLAGS_STACK_PROTECTOR_STRONG
+}
+
 # disable special linker flags for host builds (no proper test for host support yet)
 !host_build|!cross_compile {
     use_gold_linker: QMAKE_LFLAGS += $$QMAKE_LFLAGS_USE_GOLD

mkspecs/features/qt_common.prf

@@ -17,6 +17,7 @@ DEFINES *= QT_NO_NARROWING_CONVERSIONS_IN_CONNECT
 qtConfig(c++11): CONFIG += c++11 strict_c++
 qtConfig(c++14): CONFIG += c++14
 qtConfig(c++1z): CONFIG += c++1z
+qtConfig(stack-protector-strong): CONFIG += stack_protector_strong
 contains(TEMPLATE, .*lib) {
     # module and plugins
     if(!host_build|!cross_compile):qtConfig(reduce_exports): CONFIG += hide_symbols

mkspecs/qnx-aarch64le-qcc/qmake.conf

@@ -7,11 +7,3 @@ DEFINES += _FORTIFY_SOURCE=2
 QMAKE_LFLAGS_SHLIB += -Wl,-z,relro -Wl,-z,now
 
 include(../common/qcc-base-qnx-aarch64le.conf)
-
-qtConfig(stack-protector-strong) {
-    QMAKE_CFLAGS += -fstack-protector-strong
-    QMAKE_CXXFLAGS += -fstack-protector-strong
-} else {
-    QMAKE_CFLAGS += -fstack-protector -fstack-protector-all
-    QMAKE_CXXFLAGS += -fstack-protector -fstack-protector-all
-}

mkspecs/qnx-x86-64-qcc/qmake.conf

@@ -5,11 +5,3 @@
 QMAKE_LFLAGS_SHLIB += -Wl,-z,relro -Wl,-z,now
 
 include(../common/qcc-base-qnx-x86-64.conf)
-
-qtConfig(stack-protector-strong) {
-    QMAKE_CFLAGS += -fstack-protector-strong
-    QMAKE_CXXFLAGS += -fstack-protector-strong
-} else {
-    QMAKE_CFLAGS += -fstack-protector -fstack-protector-all
-    QMAKE_CXXFLAGS += -fstack-protector -fstack-protector-all
-}