projectexplorer: compile windows stuff on *nix if tests are on

Change-Id: I5bf8aa8f97affb5d56ad50b55c410a9870f8d68f
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>

src/plugins/projectexplorer/windebuginterface.cpp

@@ -32,8 +32,11 @@
 
 #include "windebuginterface.h"
 
+#ifdef Q_OS_WIN
+
 #include <windows.h>
 
+
 /*!
     \class ProjectExplorer::Internal::WinDebugInterface
     \brief Windows: Captures output of the Windows API OutputDebugString() function.
@@ -140,3 +143,25 @@ bool WinDebugInterface::runLoop()
 
 } // namespace Internal
 } // namespace ProjectExplorer
+
+#else
+
+namespace ProjectExplorer {
+namespace Internal {
+
+WinDebugInterface *WinDebugInterface::m_instance = 0;
+
+WinDebugInterface *WinDebugInterface::instance() { return 0; }
+
+WinDebugInterface::WinDebugInterface(QObject *) {}
+
+WinDebugInterface::~WinDebugInterface() {}
+
+void WinDebugInterface::run() {}
+
+bool WinDebugInterface::runLoop() { return false; }
+
+} // namespace Internal
+} // namespace ProjectExplorer
+
+#endif