From 9fdc54bfffbcb72241a0cbaa5960ed7d15f36c0b Mon Sep 17 00:00:00 2001
From: tamasmeszaros <meszaros.q@gmail.com>
Date: Mon, 27 Apr 2020 13:02:16 +0200
Subject: [PATCH] Fix app crash on startup under Linux/GTK3/Wayland config

---
 src/PrusaSlicer.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/PrusaSlicer.cpp b/src/PrusaSlicer.cpp
index 751df6fbf..9efecb50c 100644
--- a/src/PrusaSlicer.cpp
+++ b/src/PrusaSlicer.cpp
@@ -57,6 +57,14 @@ using namespace Slic3r;
 
 int CLI::run(int argc, char **argv)
 {
+
+#ifdef __WXGTK__
+    // On Linux, wxGTK has no support for Wayland, and the app crashes on
+    // startup if gtk3 is used. This env var has to be set explicitly to
+    // instruct the window manager to fall back to X server mode.
+    ::setenv("GDK_BACKEND", "x11", /* replace */ true);
+#endif
+
 	// Switch boost::filesystem to utf8.
     try {
         boost::nowide::nowide_filesystem();