From 8bee69a11f8c8246292765a3370e811b985e0ab7 Mon Sep 17 00:00:00 2001
From: Tobias Faller <faller@endiio.com>
Date: Thu, 1 Jul 2021 19:30:55 +0200
Subject: [PATCH] Added documentation of workaround for GCC 11.1.0

---
 README.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/README.md b/README.md
index b7b7ca71..f6224b7b 100644
--- a/README.md
+++ b/README.md
@@ -179,6 +179,13 @@ and then set up the necessary environment variables with
 source env/pulpissimo.sh
 ```
 
+There exists a bug in GCC 11.1.0 which fails the sdk build with the error `'this' pointer is null [-Werror=nonnull]`.
+If you encounter this bug use the following temporary workaround instead to build the SDK:
+
+```
+VP_WORKAROUND_NONNULL_BUG=yes make build-pulp-sdk
+```
+
 ### Building the RTL simulation platform
 Note you need Questasim or Xcelium to do an RTL simulation of PULPissimo
 (verilator support planned, but not finished). Intel Modelsim for Intel FPGAs