Prevent QNX tool chain demotion

Change-Id: Ia355cf80131e36e806781665c4926769a1b144f8
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/qnx/qnxconfiguration.cpp

@@ -48,6 +48,7 @@
 #include <debugger/debuggerkitinformation.h>
 
 #include <coreplugin/icore.h>
+#include <utils/algorithm.h>
 
 #include <QMessageBox>
 #include <QFileInfo>
@@ -277,6 +278,16 @@ QnxQtVersion* QnxConfiguration::qnxQtVersion(QnxArchitecture arch) const
     return 0;
 }
 
+QList<ToolChain *> QnxConfiguration::autoDetect(const QList<ToolChain *> &alreadyKnown)
+{
+    QList<ToolChain *> result;
+
+    result += findToolChain(alreadyKnown, ArmLeV7);
+    result += findToolChain(alreadyKnown, X86);
+
+    return result;
+}
+
 QVariant QnxConfiguration::createDebuggerItem(QnxArchitecture arch, const QString &displayName)
 {
     FileName command = (arch == X86) ? x86DebuggerPath() : armDebuggerPath();
@@ -304,6 +315,18 @@ QnxToolChain *QnxConfiguration::createToolChain(QnxArchitecture arch, const QStr
     return toolChain;
 }
 
+QList<ToolChain *> QnxConfiguration::findToolChain(const QList<ToolChain *> &alreadyKnown,
+                                                   QnxArchitecture arch)
+{
+    Abi abi((arch == Qnx::ArmLeV7) ? Abi::ArmArchitecture : Abi::X86Architecture,
+            Abi::LinuxOS, Abi::GenericLinuxFlavor, Abi::ElfFormat, 32);
+    return Utils::filtered(alreadyKnown, [this, abi](ToolChain *tc) {
+                                             return tc->typeId() == Constants::QNX_TOOLCHAIN_ID
+                                                 && tc->targetAbi() == abi
+                                                 && tc->compilerCommand() == m_qccCompiler;
+                                         });
+}
+
 Kit *QnxConfiguration::createKit(QnxArchitecture arch,
                                                   QnxToolChain *toolChain,
                                                   const QVariant &debuggerItemId,

src/plugins/qnx/qnxconfiguration.h

@@ -38,7 +38,11 @@
 
 #include <QVariant>
 
-namespace ProjectExplorer { class Kit; }
+namespace ProjectExplorer
+{
+    class Kit;
+    class ToolChain;
+}
 
 namespace Qnx {
 namespace Internal {
@@ -73,12 +77,18 @@ public:
     Utils::FileName sdpPath() const;
     QnxQtVersion* qnxQtVersion(QnxArchitecture arch) const;
 
+    QList<ProjectExplorer::ToolChain *> autoDetect(
+            const QList<ProjectExplorer::ToolChain *> &alreadyKnown);
+
 private:
     QVariant createDebuggerItem(Qnx::QnxArchitecture arch,
                                              const QString &displayName);
     QnxToolChain* createToolChain(Qnx::QnxArchitecture arch,
                                  const QString &displayName,
                                  const QString &ndkPath);
+    QList<ProjectExplorer::ToolChain *> findToolChain(
+            const QList<ProjectExplorer::ToolChain *> &alreadyKnown,
+            Qnx::QnxArchitecture arch);
 
     ProjectExplorer::Kit *createKit(QnxArchitecture arch,
                                     QnxToolChain *toolChain,

src/plugins/qnx/qnxtoolchain.cpp

@@ -24,6 +24,8 @@
 ****************************************************************************/
 
 #include "qnxtoolchain.h"
+#include "qnxconfiguration.h"
+#include "qnxconfigurationmanager.h"
 #include "qnxconstants.h"
 #include "qnxutils.h"
 
@@ -160,6 +162,17 @@ QnxToolChainFactory::QnxToolChainFactory()
     setDisplayName(tr("QCC"));
 }
 
+QList<ProjectExplorer::ToolChain *> QnxToolChainFactory::autoDetect(
+       const QList<ProjectExplorer::ToolChain *> &alreadyKnown)
+{
+    QList<ToolChain *> tcs;
+    QList<QnxConfiguration *> configurations =
+            QnxConfigurationManager::instance()->configurations();
+    foreach (QnxConfiguration *configuration, configurations)
+        tcs += configuration->autoDetect(alreadyKnown);
+    return tcs;
+}
+
 QSet<ToolChain::Language> QnxToolChainFactory::supportedLanguages() const
 {
     return { ProjectExplorer::ToolChain::Language::Cxx };

src/plugins/qnx/qnxtoolchain.h

@@ -69,6 +69,10 @@ class QnxToolChainFactory : public ProjectExplorer::ToolChainFactory
 
 public:
     QnxToolChainFactory();
+
+    QList<ProjectExplorer::ToolChain *> autoDetect(
+            const QList<ProjectExplorer::ToolChain *> &alreadyKnown) override;
+
     QSet<ProjectExplorer::ToolChain::Language> supportedLanguages() const override;
 
     bool canRestore(const QVariantMap &data) override;