I’ve been trying to create a wxWidgets C++ application under my EndeavourOS (should be arch linux at it’s core).
My Desktop Environment is KDE Plasma (Wayland). But I the same problems occur on GNOME, and XFCE also.
I was already successful compiling a wxWidgets C++ application under Windows.

But on Linux, my compiled simple Program crashes.
Here is the C++ Code:

#include <wx/wx.h>
//#include "class.hpp"

class MyFrame: public wxFrame{
    public:
    MyFrame() : wxFrame(nullptr, wxID_ANY, "WxWidgets Linux Program") {
        wxPanel* mainPanel = new wxPanel(this);
        wxButton* cancel = new wxButton(mainPanel, wxID_ANY, "Cancel");
        SetClientSize(500, 50); // it seems thgt this makes the program crash
        Center(); // and this also
    }
};

class App : public wxApp {
public:
    bool OnInit() {
        MyFrame* w = new MyFrame();
        w->Show();

        return true;
    }
};

wxIMPLEMENT_APP(App);

I Compiled my program with this command:
g++ main.cpp -o prog wx-config --cppflags --libs

When I run the program, the console gives the following output:

./prog: /usr/lib/libwx_gtk3u_core-3.2.so.0: no version information available (required by ./prog)
./prog: /usr/lib/libwx_baseu-3.2.so.0: no version information available (required by ./prog)
./prog: Symbol `_ZTV8wxButton' has different size in shared object, consider re-linking
./prog: Symbol `_ZTV9wxControl' has different size in shared object, consider re-linking
./prog: Symbol `_ZTV12wxButtonBase' has different size in shared object, consider re-linking
./prog: Symbol `_ZTV11wxAnyButton' has different size in shared object, consider re-linking
./prog: Symbol `_ZTV11wxPanelBase' has different size in shared object, consider re-linking
./prog: Symbol `_ZTV7wxPanel' has different size in shared object, consider re-linking
./prog: Symbol `_ZTV17wxMDIClientWindow' has different size in shared object, consider re-linking
./prog: Symbol `_ZTV7wxFrame' has different size in shared object, consider re-linking
Speicherzugriffsfehler (Speicherabzug geschrieben)
// english translation: Memory access error (memory dump written)

Program terminated with signal SIGSEGV, Segmentation fault.

This is the stacktrace I get with gdb:

User
(gdb) bt
#0  0x00006e6f74747562 in ??? ()
#1  0x00007ffff7950f43 in wxWindow::PreCreation (this=this@entry=0x55555566ef80, parent=parent@entry=0x555555724500, pos=..., size=...) at /usr/src/debug/wxwidgets/wxWidgets-3.2.4/src/gtk/window.cpp:2953
#2  0x00007ffff79533f3 in wxWindow::Create (this=0x55555566ef80, parent=0x555555724500, id=-1, pos=..., size=..., style=2621440, name=...) at /usr/src/debug/wxwidgets/wxWidgets-3.2.4/src/gtk/window.cpp:2841
#3  0x00007ffff77abf16 in wxPanelBase::Create (this=0x55555566ef80, parent=<optimized out>, id=<optimized out>, pos=<optimized out>, size=<optimized out>, style=<optimized out>, name=...) at /usr/src/debug/wxwidgets/wxWidgets-3.2.4/src/common/panelcmn.cpp:98
#4  0x0000555555564da0 in wxPanel::wxPanel(wxWindow*, int, wxPoint const&, wxSize const&, long, wxString const&) ()
#5  0x0000555555565b84 in MyFrame::MyFrame() ()
#6  0x0000555555565da0 in App::OnInit() ()
#7  0x0000555555563e79 in wxAppConsoleBase::CallOnInit() ()
#8  0x00007ffff70f1452 in wxEntry (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/wxwidgets/wxWidgets-3.2.4/src/common/init.cpp:481
#9  0x000055555556354b in main ()

The strange thing is: the following code runs just fine (except that scaling the window sometimes hangs the program)

#include <wx/wx.h>

class App : public wxApp {
public:
    bool OnInit() {
        
        wxFrame* window = new wxFrame(NULL, wxID_ANY, "GUI Test", wxDefaultPosition, wxSize(600, 400));
        wxBoxSizer* sizer = new wxBoxSizer(wxHORIZONTAL);
        wxStaticText* text = new wxStaticText(window, wxID_ANY, "Well Done!nEverything seems to be working",
            wxDefaultPosition, wxDefaultSize, wxALIGN_CENTRE_HORIZONTAL);
        text->SetFont(wxFont(20, wxFONTFAMILY_DEFAULT, wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL));
        sizer->Add(text);
        window->SetClientSize(300, 300);
        window->SetSizer(sizer);
        window->Show();
        return true;
    }
};

I searched for hours, but I could find anything specific.
Thanks for your help and advice in advance.
P.S.: I am not a linux expert – just installed EndeavorOS last week