CMake: Read CMakeCache.txt

Read the configuration from CMakeCache.txt files.

Change-Id: I7ddf9c9727420634086c973d0134059aac37ace0
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>

src/plugins/cmakeprojectmanager/builddirmanager.h

@@ -78,6 +78,7 @@ public:
     QString projectName() const;
     QList<CMakeBuildTarget> buildTargets() const;
     QList<ProjectExplorer::FileNode *> files() const;
+    CMakeConfig configuration() const;
 
 signals:
     void parsingStarted() const;
@@ -93,6 +94,8 @@ private:
     void processCMakeOutput();
     void processCMakeError();
 
+    CMakeConfig parseConfiguration() const;
+
     const Utils::FileName m_sourceDir;
     Utils::FileName m_buildDir;
     const ProjectExplorer::Kit *const m_kit;