CMakePM: Add support for qtc_runnable feature

This will allow for the Qt Creator's CMake build only qtcreator
target to be selected as runnable.

Similar to qmake's qtc_runnable or Qbs's qtcRunnable features.

Fixes: QTCREATORBUG-25908
Change-Id: I6416873d0ad9cfec4960d98fc4b289ec98cc58b1
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

cmake/QtCreatorAPI.cmake

@@ -602,7 +602,7 @@ function(extend_qtc_test target_name)
 endfunction()
 
 function(add_qtc_executable name)
-  cmake_parse_arguments(_arg "SKIP_INSTALL;SKIP_TRANSLATION;ALLOW_ASCII_CASTS;SKIP_PCH"
+  cmake_parse_arguments(_arg "SKIP_INSTALL;SKIP_TRANSLATION;ALLOW_ASCII_CASTS;SKIP_PCH;QTC_RUNNABLE"
     "DESTINATION;COMPONENT;BUILD_DEFAULT"
     "CONDITION;DEPENDS;DEFINES;INCLUDES;SOURCES;EXPLICIT_MOC;SKIP_AUTOMOC;EXTRA_TRANSLATIONS;PROPERTIES" ${ARGN})
 
@@ -707,6 +707,11 @@ function(add_qtc_executable name)
     enable_pch(${name})
   endif()
 
+  if (_arg_QTC_RUNNABLE)
+      # Used by QtCreator to select the default target in the project
+      set_target_properties(${name} PROPERTIES FOLDER "qtc_runnable")
+  endif()
+
   if (NOT _arg_SKIP_INSTALL)
     unset(COMPONENT_OPTION)
     if (_arg_COMPONENT)

src/app/CMakeLists.txt

@@ -17,6 +17,7 @@ add_qtc_executable(qtcreator
     MACOSX_BUNDLE ON
     OUTPUT_NAME "${IDE_APP_TARGET}"
   DESTINATION "${IDE_APP_PATH}"
+  QTC_RUNNABLE
 )
 
 if (NOT TARGET qtcreator)

src/plugins/cmakeprojectmanager/cmakebuildsystem.cpp

@@ -1009,6 +1009,7 @@ const QList<BuildTargetInfo> CMakeBuildSystem::appTargets() const
             bti.workingDirectory = ct.workingDirectory;
             bti.buildKey = buildKey;
             bti.usesTerminal = !ct.linksToQtGui;
+            bti.isQtcRunnable = ct.qtcRunnable;
 
             // Workaround for QTCREATORBUG-19354:
             bti.runEnvModifier = [this, buildKey](Environment &env, bool enabled) {

src/plugins/cmakeprojectmanager/cmakebuildtarget.h

@@ -54,6 +54,7 @@ public:
     Utils::FilePath executable; // TODO: rename to output?
     TargetType targetType = UtilityType;
     bool linksToQtGui = false;
+    bool qtcRunnable = true;
     Utils::FilePath workingDirectory;
     Utils::FilePath sourceDirectory;
     Utils::FilePath makeCommand;

src/plugins/cmakeprojectmanager/fileapidataextractor.cpp

@@ -256,6 +256,8 @@ QList<CMakeBuildTarget> generateBuildTargets(const PreprocessedData &input,
                                                                  || f.fragment.contains("Qt6Gui"));
                                                   });
 
+                ct.qtcRunnable = t.folderTargetProperty == "qtc_runnable";
+
                 // Extract library directories for executables:
                 for (const FragmentInfo &f : t.link.value().fragments) {
                     if (f.role == "flags") // ignore all flags fragments