CMakePM: Build the correct executable before running

When issuing on a CMake target the context menu action "Run" the build
system would build the wrong target:
  * either "all"
  * or "Current executable" which might have been a different target

This change set makes sure that when a project target is selected in the
Project view, the build target will be restricted to this target.

This way the correct executable will be built before running.

Fixes: QTCREATORBUG-31386
Change-Id: Ibe6e50c4588ffca53ec2ac9555265023188f6e4e
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>

src/plugins/cmakeprojectmanager/cmakebuildconfiguration.cpp

@@ -1658,16 +1658,18 @@ void CMakeBuildConfiguration::buildTarget(const QString &buildTarget)
         return bs->id() == Constants::CMAKE_BUILD_STEP_ID;
     }));
 
-    QStringList originalBuildTargets;
     if (cmBs) {
-        originalBuildTargets = cmBs->buildTargets();
+        if (m_unrestrictedBuildTargets.isEmpty())
+            m_unrestrictedBuildTargets = cmBs->buildTargets();
         cmBs->setBuildTargets({buildTarget});
     }
 
     BuildManager::buildList(buildSteps());
 
-    if (cmBs)
-        cmBs->setBuildTargets(originalBuildTargets);
+    if (cmBs) {
+        cmBs->setBuildTargets(m_unrestrictedBuildTargets);
+        m_unrestrictedBuildTargets.clear();
+    }
 }
 
 void CMakeBuildConfiguration::reBuildTarget(const QString &cleanTarget, const QString &buildTarget)
@@ -1681,9 +1683,9 @@ void CMakeBuildConfiguration::reBuildTarget(const QString &cleanTarget, const QS
             return bs->id() == Constants::CMAKE_BUILD_STEP_ID;
         }));
 
-    QStringList originalBuildTargets;
     if (cmBs) {
-        originalBuildTargets = cmBs->buildTargets();
+        if (m_unrestrictedBuildTargets.isEmpty())
+            m_unrestrictedBuildTargets = cmBs->buildTargets();
         cmBs->setBuildTargets({buildTarget});
     }
     QString originalCleanTarget;
@@ -1694,8 +1696,10 @@ void CMakeBuildConfiguration::reBuildTarget(const QString &cleanTarget, const QS
 
     BuildManager::buildLists({cleanSteps(), buildSteps()});
 
-    if (cmBs)
-        cmBs->setBuildTargets(originalBuildTargets);
+    if (cmBs) {
+        cmBs->setBuildTargets(m_unrestrictedBuildTargets);
+        m_unrestrictedBuildTargets.clear();
+    }
     if (cmCs)
         cmCs->setBuildTargets({originalCleanTarget});
 }
@@ -2113,6 +2117,11 @@ void CMakeBuildConfiguration::addToEnvironment(Utils::Environment &env) const
 }
 
 void CMakeBuildConfiguration::restrictNextBuild(const ProjectExplorer::RunConfiguration *rc)
+{
+    setRestrictedBuildTarget(rc ? rc->buildKey() : QString());
+}
+
+void CMakeBuildConfiguration::setRestrictedBuildTarget(const QString &buildTarget)
 {
     auto buildStep = qobject_cast<CMakeBuildStep *>(
         findOrDefault(buildSteps()->steps(), [](const BuildStep *bs) {
@@ -2121,14 +2130,17 @@ void CMakeBuildConfiguration::restrictNextBuild(const ProjectExplorer::RunConfig
     if (!buildStep)
         return;
 
-    if (rc) {
-        m_unrestrictedBuildTargets = buildStep->buildTargets();
-        buildStep->setBuildTargets({rc->buildKey()});
+    if (!buildTarget.isEmpty()) {
+        if (m_unrestrictedBuildTargets.isEmpty())
+            m_unrestrictedBuildTargets = buildStep->buildTargets();
+        buildStep->setBuildTargets({buildTarget});
         return;
     }
 
-    if (!m_unrestrictedBuildTargets.isEmpty())
+    if (!m_unrestrictedBuildTargets.isEmpty()) {
         buildStep->setBuildTargets(m_unrestrictedBuildTargets);
+        m_unrestrictedBuildTargets.clear();
+    }
 }
 
 Environment CMakeBuildConfiguration::configureEnvironment() const

src/plugins/cmakeprojectmanager/cmakebuildconfiguration.h

@@ -72,6 +72,7 @@ public:
     void addToEnvironment(Utils::Environment &env) const override;
 
     void restrictNextBuild(const ProjectExplorer::RunConfiguration *rc) override;
+    void setRestrictedBuildTarget(const QString &buildTarget);
 
     Utils::Environment configureEnvironment() const;
     Internal::CMakeBuildSystem *cmakeBuildSystem() const;

src/plugins/cmakeprojectmanager/cmakeprojectmanager.cpp

@@ -4,6 +4,7 @@
 #include "cmakeprojectmanager.h"
 
 #include "cmakebuildsystem.h"
+#include "cmakebuildconfiguration.h"
 #include "cmakekitaspect.h"
 #include "cmakeprocess.h"
 #include "cmakeproject.h"
@@ -62,7 +63,8 @@ public:
     static void openCMakeUrl(const QUrl &url);
 
 private:
-    void updateCmakeActions(Node *node);
+    void updateCMakeActions(Node *node);
+    void updateCMakeBuildTarget(Node *node);
     void clearCMakeCache(BuildSystem *buildSystem);
     void runCMake(BuildSystem *buildSystem);
     void runCMakeWithProfiling(BuildSystem *buildSystem);
@@ -290,22 +292,24 @@ CMakeManager::CMakeManager()
             CMakeTool::Version version = tool ? tool->version() : CMakeTool::Version();
             m_canDebugCMake = (version.major == 3 && version.minor >= 27) || version.major > 3;
         }
-        updateCmakeActions(ProjectTree::currentNode());
+        updateCMakeActions(ProjectTree::currentNode());
     });
     connect(BuildManager::instance(), &BuildManager::buildStateChanged, this, [this] {
-        updateCmakeActions(ProjectTree::currentNode());
+        updateCMakeActions(ProjectTree::currentNode());
     });
     connect(EditorManager::instance(), &EditorManager::currentEditorChanged, this, [this]() {
         updateBuildFileAction();
         enableBuildSubprojectMenu();
     });
-    connect(ProjectTree::instance(), &ProjectTree::currentNodeChanged,
-            this, &CMakeManager::updateCmakeActions);
+    connect(ProjectTree::instance(), &ProjectTree::currentNodeChanged, this, [this](Node *node) {
+        updateCMakeActions(node);
+        updateCMakeBuildTarget(node);
+    });
 
-    updateCmakeActions(ProjectTree::currentNode());
+    updateCMakeActions(ProjectTree::currentNode());
 }
 
-void CMakeManager::updateCmakeActions(Node *node)
+void CMakeManager::updateCMakeActions(Node *node)
 {
     auto project = qobject_cast<CMakeProject *>(ProjectManager::startupProject());
     const bool visible = project && !BuildManager::isBuilding(project);
@@ -332,6 +336,21 @@ void CMakeManager::updateCmakeActions(Node *node)
     enableBuildSubprojectContextMenu(node);
 }
 
+void CMakeManager::updateCMakeBuildTarget(Node *node)
+{
+    if (!node)
+        return;
+
+    auto bs = qobject_cast<CMakeBuildSystem *>(ProjectTree::currentBuildSystem());
+    if (!bs)
+        return;
+
+    auto targetNode = dynamic_cast<const CMakeTargetNode *>(node);
+
+    bs->cmakeBuildConfiguration()->setRestrictedBuildTarget(
+        targetNode ? targetNode->buildKey() : QString());
+}
+
 void CMakeManager::clearCMakeCache(BuildSystem *buildSystem)
 {
     auto cmakeBuildSystem = dynamic_cast<CMakeBuildSystem *>(buildSystem);