CMake: Parse cmake syntax errors

Improve the CMakeParser so that it picks up the most common
errors/warnings that cmake throws when running into errors while
parsing its CMakeLists.txt files.

Change-Id: Ie3774695418f13aa3869d78802c1a552e6fd384e
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/cmakeprojectmanager/cmakeparser.h

@@ -28,6 +28,8 @@
 #include <projectexplorer/ioutputparser.h>
 #include <projectexplorer/task.h>
 
+#include <QRegularExpression>
+
 namespace CMakeProjectManager {
 namespace Internal {
 
@@ -43,13 +45,17 @@ protected:
     void doFlush() override;
 
 private:
+    enum TripleLineError { NONE, LINE_LOCATION, LINE_DESCRIPTION, LINE_DESCRIPTION2 };
+
+    TripleLineError m_expectTripleLineErrorData = NONE;
+
     ProjectExplorer::Task m_lastTask;
     QRegExp m_commonError;
     QRegExp m_nextSubError;
+    QRegularExpression m_locationLine;
     bool m_skippedFirstEmptyLine = false;
     int m_lines = 0;
 };
 
 } // namespace CMakeProjectManager
 } // namespace Internal
-