Upgrade arm-none-eabi compiler
It was 5 years out of date and didn't fully support C++20.
In doing so, flip off "freestanding" mode for the cortex-m4f compiler's
use of libstdc++.
This is because some libraries appear to have been using STL headers
that cannot be safely linked against in freestanding mode (e.g.,
<ostream>). I am unsure why the prior compiler was not catching this.
If this becomes a problem, we can disable it.
Change-Id: Ie08ce2c089f787b0433a761ad2242dcd2a516404
Signed-off-by: James Kuszmaul <jabukuszmaul+collab@gmail.com>
diff --git a/y2019/vision/constants.h b/y2019/vision/constants.h
index 8510f4c..959f5b7 100644
--- a/y2019/vision/constants.h
+++ b/y2019/vision/constants.h
@@ -3,6 +3,7 @@
#include <array>
#include <cmath>
+#include <cstdint>
#include <string>
namespace y2019 {