Added missing includes (GCC11.1 without PCH).

src/slic3r/GUI/GUI.cpp

@@ -10,6 +10,7 @@
 #include <boost/algorithm/string.hpp>
 #include <boost/algorithm/string/predicate.hpp>
 #include <boost/any.hpp>
+#include <boost/filesystem.hpp>
 
 #if __APPLE__
 #import <IOKit/pwr_mgt/IOPMLib.h>

src/slic3r/GUI/GUI.hpp

@@ -13,6 +13,7 @@ class wxWindow;
 class wxMenuBar;
 class wxComboCtrl;
 class wxFileDialog;
+class wxArrayString;
 class wxTopLevelWindow;
 
 namespace Slic3r { 

src/slic3r/GUI/UpdateDialogs.cpp

@@ -3,6 +3,7 @@
 #include <cstring>
 #include <boost/format.hpp>
 #include <boost/algorithm/string/predicate.hpp>
+#include <boost/nowide/convert.hpp>
 
 #include <wx/settings.h>
 #include <wx/sizer.h>

src/slic3r/GUI/UpdateDialogs.hpp

@@ -6,6 +6,8 @@
 #include <vector>
 #include <wx/hyperlink.h>
 
+#include <boost/filesystem.hpp>
+
 #include "libslic3r/Semver.hpp"
 #include "MsgDialog.hpp"