CMake: Fix cmake preloadCache file support

* Make it work at all again for cmake configurations without a
  preloadCache file
* Fix the KitInformation to provide the getters/setters like all
  the other KitInformation do
* Use those setters consistently
* Remove useless conversion from QString to QByteArray and back

Change-Id: I8fc43b3531da2c04034c89b29915a29c331fe064
Reviewed-by: Cristian Adam <cristian.adam@gmail.com>
Reviewed-by: Benjamin Zeller <benjamin.zeller@canonical.com>
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/plugins/cmakeprojectmanager/cmakeprojectmanager.cpp b/src/plugins/cmakeprojectmanager/cmakeprojectmanager.cpp
index 5510968bf9..f624b46383 100644
--- a/src/plugins/cmakeprojectmanager/cmakeprojectmanager.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakeprojectmanager.cpp
@@ -160,7 +160,8 @@ void CMakeManager::createXmlFile(Utils::QtcProcess *proc, const QString &executa
     Utils::QtcProcess::addArg(&args, srcdir);
     Utils::QtcProcess::addArgs(&args, arguments);
     Utils::QtcProcess::addArg(&args, generator);
-    Utils::QtcProcess::addArg(&args, preloadCache);
+    if (!preloadCache.isEmpty())
+        Utils::QtcProcess::addArg(&args, preloadCache);
     proc->setCommand(executable, args);
     proc->start();
 }