McuSupport: Change version checking from exact == to >= minimum

So far, one Qt Creator version supported exactly one Qt for MCUs
version, mainly because of incompatibilities in-between Qt for MCUs
versions.

The compatibility of 1.2 with 1.3 and further is now deemed stable
enough to loosen the version checking.

This change replaces the exact versions comparison (between Qt for MCUs
SDK version and what Qt Creator supports) to a minimum version check of
what Qt Creator supports.

One limitation that remains is that you can only have one kit per target,
across the supported Qt for MCUs versions. To mend this, UI changes are
required (in a separate commit).
Workaround for now: If you want e.g. Desktop Kits for different Qt for
MCUs versions at the same time, you need to work with kit clones.

Task-number: QTCREATORBUG-24293
Change-Id: Ifd31cd2eadbc1d7fa02415e1928d0047cf007f7c
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

3 files changed, 29 insertions, 18 deletions

diff --git a/src/plugins/mcusupport/mcusupportoptions.cpp b/src/plugins/mcusupport/mcusupportoptions.cpp
index 911f0b3091..f4a333b6fa 100644
--- a/src/plugins/mcusupport/mcusupportoptions.cpp
+++ b/src/plugins/mcusupport/mcusupportoptions.cpp
@@ -336,10 +336,12 @@ QVariant McuToolChainPackage::debuggerId() const
     return debuggerId;
 }
 
-McuTarget::McuTarget(const QString &vendor, const QString &platform, OS os,
+McuTarget::McuTarget(const QVersionNumber &qulVersion, const QString &vendor,
+                     const QString &platform, OS os,
                      const QVector<McuPackage *> &packages,
                      const McuToolChainPackage *toolChainPackage)
-    : m_vendor(vendor)
+    : m_qulVersion(qulVersion)
+    , m_vendor(vendor)
     , m_qulPlatform(platform)
     , m_os(os)
     , m_packages(packages)
@@ -379,6 +381,11 @@ bool McuTarget::isValid() const
     });
 }
 
+QVersionNumber McuTarget::qulVersion() const
+{
+    return m_qulVersion;
+}
+
 int McuTarget::colorDepth() const
 {
     return m_colorDepth;
@@ -455,7 +462,7 @@ void McuSupportOptions::deletePackagesAndTargets()
     mcuTargets.clear();
 }
 
-const QVersionNumber &McuSupportOptions::supportedQulVersion()
+const QVersionNumber &McuSupportOptions::minimalQulVersion()
 {
     static const QVersionNumber v({1, 3});
     return v;
@@ -498,7 +505,7 @@ static void setKitProperties(const QString &kitName, ProjectExplorer::Kit *k,
     k->setValue(KIT_MCUTARGET_VENDOR_KEY, mcuTarget->vendor());
     k->setValue(KIT_MCUTARGET_MODEL_KEY, mcuTarget->qulPlatform());
     k->setValue(KIT_MCUTARGET_COLORDEPTH_KEY, mcuTarget->colorDepth());
-    k->setValue(KIT_MCUTARGET_SDKVERSION_KEY, McuSupportOptions::supportedQulVersion().toString());
+    k->setValue(KIT_MCUTARGET_SDKVERSION_KEY, mcuTarget->qulVersion().toString());
     k->setValue(KIT_MCUTARGET_KITVERSION_KEY, KIT_VERSION);
     k->setValue(KIT_MCUTARGET_OS_KEY, static_cast<int>(mcuTarget->os()));
     k->setAutoDetected(true);
@@ -631,7 +638,7 @@ QString McuSupportOptions::kitName(const McuTarget *mcuTarget)
             ? "Desktop"
             : mcuTarget->qulPlatform();
     return QString::fromLatin1("Qt for MCUs %1 - %2%3%4")
-            .arg(supportedQulVersion().toString(), targetName, os, colorDepth);
+            .arg(mcuTarget->qulVersion().toString(), targetName, os, colorDepth);
 }
 
 QList<ProjectExplorer::Kit *> McuSupportOptions::existingKits(const McuTarget *mcuTarget)
@@ -641,8 +648,6 @@ QList<ProjectExplorer::Kit *> McuSupportOptions::existingKits(const McuTarget *m
     return Utils::filtered(KitManager::kits(), [mcuTarget](Kit *kit) {
         return kit->isAutoDetected()
                 && kit->value(KIT_MCUTARGET_KITVERSION_KEY) == KIT_VERSION
-                && kit->value(KIT_MCUTARGET_SDKVERSION_KEY) ==
-                   McuSupportOptions::supportedQulVersion().toString()
                 && (!mcuTarget || (
                         kit->value(KIT_MCUTARGET_VENDOR_KEY) == mcuTarget->vendor()
                         && kit->value(KIT_MCUTARGET_MODEL_KEY) == mcuTarget->qulPlatform()
diff --git a/src/plugins/mcusupport/mcusupportoptions.h b/src/plugins/mcusupport/mcusupportoptions.h
index 0ef910b756..ed5e70eec1 100644
--- a/src/plugins/mcusupport/mcusupportoptions.h
+++ b/src/plugins/mcusupport/mcusupportoptions.h
@@ -138,9 +138,11 @@ public:
         FreeRTOS
     };
 
-    McuTarget(const QString &vendor, const QString &platform, OS os,
-              const QVector<McuPackage *> &packages, const McuToolChainPackage *toolChainPackage);
+    McuTarget(const QVersionNumber &qulVersion, const QString &vendor, const QString &platform,
+              OS os, const QVector<McuPackage *> &packages,
+              const McuToolChainPackage *toolChainPackage);
 
+    QVersionNumber qulVersion() const;
     QString vendor() const;
     QVector<McuPackage *> packages() const;
     const McuToolChainPackage *toolChainPackage() const;
@@ -151,6 +153,7 @@ public:
     bool isValid() const;
 
 private:
+    const QVersionNumber m_qulVersion;
     const QString m_vendor;
     const QString m_qulPlatform;
     const OS m_os = OS::BareMetal;
@@ -184,7 +187,7 @@ public:
     static void registerQchFiles();
     static void registerExamples();
 
-    static const QVersionNumber &supportedQulVersion();
+    static const QVersionNumber &minimalQulVersion();
 
 private:
     void deletePackagesAndTargets();
diff --git a/src/plugins/mcusupport/mcusupportsdk.cpp b/src/plugins/mcusupport/mcusupportsdk.cpp
index e3e44a9eaf..6279e446d8 100644
--- a/src/plugins/mcusupport/mcusupportsdk.cpp
+++ b/src/plugins/mcusupport/mcusupportsdk.cpp
@@ -59,8 +59,8 @@ static QString findInProgramFiles(const QString &folder)
 McuPackage *createQtForMCUsPackage()
 {
     auto result = new McuPackage(
-                McuPackage::tr("Qt for MCUs %1 SDK").arg(
-                    McuSupportOptions::supportedQulVersion().toString()),
+                McuPackage::tr("Qt for MCUs %1+ SDK").arg(
+                    McuSupportOptions::minimalQulVersion().toString()),
                 QDir::homePath(),
                 Utils::HostOsInfo::withExecutableSuffix("bin/qmltocpp"),
                 Constants::SETTINGS_KEY_PACKAGE_QT_FOR_MCUS_SDK);
@@ -276,7 +276,8 @@ static QVector<McuTarget *> targetsFromDescriptions(const QList<McuTargetDescrip
     for (auto desc : descriptions) {
         McuToolChainPackage *tcPkg = tcPkgs.value(desc.toolchainId);
         if (desc.toolchainId == "desktop") {
-            auto mcuTarget = new McuTarget(desc.platformVendor, desc.platform,
+            auto mcuTarget = new McuTarget(QVersionNumber::fromString(desc.qulVersion),
+                                           desc.platformVendor, desc.platform,
                                            McuTarget::OS::Desktop, {}, tcPkg);
             mcuTargets.append(mcuTarget);
             continue;
@@ -310,7 +311,8 @@ static QVector<McuTarget *> targetsFromDescriptions(const QList<McuTargetDescrip
                     }
                 }
 
-                auto mcuTarget = new McuTarget(desc.platformVendor, desc.platform, os,
+                auto mcuTarget = new McuTarget(QVersionNumber::fromString(desc.qulVersion),
+                                               desc.platformVendor, desc.platform, os,
                                                required3rdPartyPkgs, tcPkg);
                 if (desc.colorDepths.count() > 1)
                     mcuTarget->setColorDepth(colorDepth);
@@ -370,16 +372,17 @@ void targetsAndPackages(const Utils::FilePath &dir, QVector<McuPackage *> *packa
         if (!file.open(QFile::ReadOnly))
             continue;
         const McuTargetDescription desc = parseDescriptionJson(file.readAll());
-        if (!McuSupportOptions::supportedQulVersion()
-                .isPrefixOf(QVersionNumber::fromString(desc.qulVersion)))
+        if (QVersionNumber::fromString(desc.qulVersion) < McuSupportOptions::minimalQulVersion())
             return; // Invalid version means invalid SDK installation.
         descriptions.append(desc);
     }
 
     // Workaround for missing JSON file for Desktop target:
     if (dir.pathAppended("/lib/QulQuickUltralite_QT_32bpp_Windows_Release.lib").exists()) {
-        descriptions.prepend({McuSupportOptions::supportedQulVersion().toString(),
-                              {"Qt"}, {"Qt"}, {32}, {"desktop"}, {}, {}, {}});
+        const QString qulVersion = descriptions.empty() ?
+                    McuSupportOptions::minimalQulVersion().toString()
+                  : descriptions.first().qulVersion;
+        descriptions.prepend({qulVersion, {"Qt"}, {"Qt"}, {32}, {"desktop"}, {}, {}, {}});
     }
 
     mcuTargets->append(targetsFromDescriptions(descriptions, packages));