From b6a1d396b6984f5d11dfdcaf8efba5a7fa405ed2 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Tue, 7 Jul 2020 15:05:21 +0200 Subject: user: Add v5 to v6 migration help --- user/migration/v5-to-v6.rst | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 user/migration/v5-to-v6.rst (limited to 'user/migration/v5-to-v6.rst') diff --git a/user/migration/v5-to-v6.rst b/user/migration/v5-to-v6.rst new file mode 100644 index 0000000..5997057 --- /dev/null +++ b/user/migration/v5-to-v6.rst @@ -0,0 +1,20 @@ +.. SPDX-License-Identifier: CC-BY-SA-4.0 + +.. Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de) + +.. _Migration_5_to_6: + +RTEMS 5 to RTEMS 6 +================== + +This section provides helpful information when migrating from RTEMS 5 to +RTEMS 6. + +Update to GCC 10 +---------------- + +The tool suite for RTEMS 6 uses GCC 10. GCC 10 enables ``-fno-common`` by +default. Code bases which never used this option before may observe now +multiple definition linker errors. For example, if global variables are +declared and defined in header files (usually a missing ``extern`` in the header +file). -- cgit v1.2.3