From c2ba096d062a5978b149c510e7537cf1c596778e Mon Sep 17 00:00:00 2001
From: Giles Bathgate <gilesbathgate@gmail.com>
Date: Mon, 7 Sep 2020 19:03:12 +0100
Subject: [PATCH] Document the additional cmake flag

Document the additional cmake flag needed for compilation on ubuntu 20.04 focal
---
 doc/How to build - Linux et al.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/doc/How to build - Linux et al.md b/doc/How to build - Linux et al.md
index 9206ae1ed..a8f2441be 100644
--- a/doc/How to build - Linux et al.md	
+++ b/doc/How to build - Linux et al.md	
@@ -56,6 +56,10 @@ This is done by passing this option to CMake:
 
 Note that PrusaSlicer is tested with wxWidgets 3.0 somewhat sporadically and so there may be bugs in bleeding edge releases.
 
+When building on ubuntu 20.04 focal fossa, the package libwxgtk3.0-gtk3-dev needs to be installed instead of libwxgtk3.0-dev and you should use:
+
+    -DSLIC3R_WX_STABLE=1 -DSLIC3R_GTK=3
+
 ### Build variant
 
 By default PrusaSlicer builds the release variant.