Docker: Improve Kit setup

- Use toolchain bundles, ensuring compatible C/C++ toolchains
- Try harder to match Qt and toolchains

Change-Id: I8739a5e1e75d08df4346d51cb0ee7704ca072489
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>

src/plugins/docker/kitdetector.cpp

@@ -262,7 +262,9 @@ Toolchains KitDetectorPrivate::autoDetectToolchains()
                                   .arg(toolchain->compilerCommand().toUserOutput()));
             toolchain->setDetectionSource(m_sharedId);
         }
-        ToolchainManager::registerToolchains(newToolchains);
+        const QList<ToolchainBundle> bundles = ToolchainBundle::collectBundles(newToolchains);
+        for (const ToolchainBundle &b : bundles)
+            ToolchainManager::registerToolchains(b.toolchains());
         alreadyKnown.append(newToolchains);
         allNewToolchains.append(newToolchains);
     }
@@ -332,7 +334,7 @@ void KitDetectorPrivate::autoDetect()
 
     emit q->logOutput(ProjectExplorer::Tr::tr("Starting auto-detection. This will take a while..."));
 
-    const Toolchains toolchains = autoDetectToolchains();
+    autoDetectToolchains();
     const QtVersions qtVersions = autoDetectQtVersions();
 
     const QList<Id> cmakeIds = autoDetectCMake();
@@ -340,7 +342,7 @@ void KitDetectorPrivate::autoDetect()
     autoDetectDebugger();
     autoDetectPython();
 
-    const auto initializeKit = [this, toolchains, qtVersions, cmakeId](Kit *k) {
+    const auto initializeKit = [this, qtVersions, cmakeId](Kit *k) {
         k->setAutoDetected(false);
         k->setAutoDetectionSource(m_sharedId);
         k->setUnexpandedDisplayName("%{Device:Name}");
@@ -352,18 +354,32 @@ void KitDetectorPrivate::autoDetect()
         DeviceKitAspect::setDevice(k, m_device);
         BuildDeviceKitAspect::setDevice(k, m_device);
 
-        QtVersion *qt = nullptr;
-        if (!qtVersions.isEmpty()) {
-            qt = qtVersions.at(0);
-            QtSupport::QtKitAspect::setQtVersion(k, qt);
+        const Toolchains toolchainCandidates = ToolchainManager::toolchains(
+            [this](const Toolchain *tc) { return tc->detectionSource() == m_sharedId; });
+        const QList<ToolchainBundle> bundles = ToolchainBundle::collectBundles(toolchainCandidates);
+        for (const ToolchainBundle &b : bundles)
+            ToolchainManager::registerToolchains(b.createdToolchains());
+
+        // Try to find a matching Qt/Toolchain pair.
+        bool match = false;
+        for (const ToolchainBundle &bundle : bundles) {
+            if (match)
+                break;
+            for (QtVersion * const qt : qtVersions) {
+                if (Utils::contains(qt->qtAbis(), [&bundle](const Abi &abi) {
+                        return bundle.targetAbi().isCompatibleWith(abi);
+                    })) {
+                    match = true;
+                    ToolchainKitAspect::setBundle(k, bundle);
+                    QtKitAspect::setQtVersion(k, qt);
+                    break;
+                }
+            }
         }
-        Toolchains toolchainsToSet;
-        toolchainsToSet = ToolchainManager::toolchains([qt, this](const Toolchain *tc) {
-            return tc->detectionSource() == m_sharedId
-                   && (!qt || qt->qtAbis().contains(tc->targetAbi()));
-        });
-        for (Toolchain *toolchain : toolchainsToSet)
-            ToolchainKitAspect::setToolchain(k, toolchain);
+
+        // Otherwise, just set a random toolchain.
+        if (!match && !bundles.isEmpty())
+            ToolchainKitAspect::setBundle(k, bundles.first());
 
         if (cmakeId.isValid())
             k->setSticky(CMakeProjectManager::Constants::TOOL_ID, true);

src/plugins/projectexplorer/kitaspects.cpp

@@ -620,6 +620,13 @@ void ToolchainKitAspect::setToolchain(Kit *k, Toolchain *tc)
     k->setValue(id(), variantFromStore(result));
 }
 
+void ToolchainKitAspect::setBundle(Kit *k, const ToolchainBundle &bundle)
+{
+    bundle.forEach<Toolchain>([k](Toolchain &tc) {
+        setToolchain(k, &tc);
+    });
+}
+
 /**
  * @brief ToolchainKitAspect::setAllToolchainsToMatch
  *

src/plugins/projectexplorer/kitaspects.h

@@ -11,8 +11,8 @@
 #include <utils/environment.h>
 
 namespace ProjectExplorer {
-
 class Toolchain;
+class ToolchainBundle;
 
 // SysRootKitAspect
 
@@ -36,6 +36,7 @@ public:
     static Toolchain *cxxToolchain(const Kit *k);
     static QList<Toolchain *> toolChains(const Kit *k);
     static void setToolchain(Kit *k, Toolchain *tc);
+    static void setBundle(Kit *k, const ToolchainBundle &bundle);
     static void setAllToolchainsToMatch(Kit *k, Toolchain *tc);
     static void clearToolchain(Kit *k, Utils::Id language);
     static Abi targetAbi(const Kit *k);

src/plugins/projectexplorer/toolchain.h

@@ -246,7 +246,7 @@ public:
             std::invoke(setter, static_cast<T &>(*tc), args...);
     }
 
-    template<typename T> void forEach(const std::function<void(T &toolchain)> &modifier)
+    template<typename T> void forEach(const std::function<void(T &toolchain)> &modifier) const
     {
         for (Toolchain * const tc : std::as_const(m_toolchains))
             modifier(static_cast<T &>(*tc));