ClangCodeModel: Make use of QLoggingCategory

Change-Id: I28d50e224803096c032ae6e387bf1346db4cc216
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>

src/plugins/clangcodemodel/clangutils.cpp

@@ -41,6 +41,7 @@
 
 #include <QDir>
 #include <QFile>
+#include <QLoggingCategory>
 #include <QSet>
 #include <QString>
 
@@ -49,11 +50,11 @@ using namespace ClangCodeModel::Internal;
 using namespace Core;
 using namespace CppTools;
 
-static const bool BeVerbose = qgetenv("QTC_CLANG_VERBOSE") == "1";
-
 namespace ClangCodeModel {
 namespace Utils {
 
+Q_LOGGING_CATEGORY(verboseRunLog, "qtc.clangcodemodel.verboserun")
+
 namespace {
 bool isBlacklisted(const QString &path)
 {
@@ -139,7 +140,7 @@ QStringList createClangOptions(const ProjectPart::Ptr &pPart, ProjectFile::Kind
     if (pPart.isNull())
         return result;
 
-    if (BeVerbose)
+    if (verboseRunLog().isDebugEnabled())
         result << QLatin1String("-v");
 
     const bool objcExt = pPart->languageExtensions & ProjectPart::ObjectiveCExtensions;